Water-driven biological enzyme pour point depressant and viscosity reducer filling device and method

Abstract

The present application relates to a kind of water-driven biological enzyme pour point depressant and viscosity reducer filling device, comprising: filling device is arranged in the injection well casing, and filling device is located at reservoir, and pour point depressant is injected into reservoir;Pour point depressant supply assembly, pour point depressant is contained in the storage tank, the inlet end of storage tank is communicated with pour point depressant supply device, and the outlet end of storage tank is communicated wellhead device;Pour point depressant supply assembly further includes stirring device, and its stirring element extends into the inside of storage tank;Stirring device includes support unit and the lifting piece that can slide up and down of installation in support unit, and stirring element is installed in lifting piece;Water jacket furnace is used to heat storage tank, and electromagnetic induction heating coil is arranged in filling device, to heat pour point depressant in storage tank to ℃, and T m It is the optimum activity temperature of biological enzyme, T f It is the inactivation temperature of biological enzyme;Electromagnetic induction heating coil can preheat filling device, and when the temperature of pour point depressant in filling device is lower than T m , pour point depressant can be warmed up.

Description

Technical Field

[0001] This invention belongs to the technical field of bio-enzyme-assisted oil recovery, specifically a water-drive bio-enzyme depressant and viscosity reducer injection device and method. Background Technology

[0002] In the water-drive bio-enzyme depressant and viscosity reducer injection technology, the auxiliary agent is water mixed with bio-enzyme depressant and viscosity reducer. Compared with chemical flooding to enhance oil recovery, bio-enzyme flooding technology has developed rapidly in recent years. This technology has also successfully improved oil recovery in oil reservoirs of high-pour-point and heavy oil blocks around the world.

[0003] Temperature affects the viscosity-reducing and coagulation-reducing effects of biological enzymes. Biological enzymes that reduce viscosity and coagulation have the best activity and the best viscosity-reducing and coagulation-reducing effects at specific temperatures. When the temperature exceeds a certain level, their activity will decrease. When the temperature exceeds a certain high temperature, the protein of the biological enzyme will undergo irreversible denaturation and become inactive.

[0004] Traditional waterflooding bio-enzyme depressants and viscosity reducers are often used in oilfield waste heat recovery systems to heat surface tanks, as these agents do not require or can not be heated to very high temperatures. This ensures the activity of the bio-enzymes, thus fully utilizing waste heat energy and reducing oil displacement costs. Alternatively, electromagnetic induction heaters can be installed in underground injection units to heat the bio-enzyme adjuvants within the unit, ensuring optimal enzyme activity.

[0005] However, using a waste heat recovery system to heat the above-ground equipment can lead to a temperature drop in the above-ground portion of the unit, potentially causing the temperature of the adjuvant at the outlet of the refueling unit to fall below the optimal activity temperature of the bio-enzyme, and the outlet temperature is difficult to control. Installing an electromagnetic induction heater within the underground refueling unit requires a significant amount of additional electrical energy, resulting in higher costs.

[0006] Therefore, there is an urgent need for a water-driven bio-enzyme decoction and viscosity-reducing agent injection device and method that can solve the above problems. Summary of the Invention

[0007] To address the aforementioned problems, this invention proposes a water-driven bio-enzyme decoction and viscosity-reducing agent dispensing device, comprising:

[0008] Wellhead device, installed at the wellhead of the injection well, is used to inject the driving agent into the injection well;

[0009] The injection device is installed inside the injection well casing and located at the reservoir. It is used to receive the booster agent from the wellhead device and inject the booster agent into the reservoir.

[0010] The auxiliary driving agent supply component has a tank containing auxiliary driving agent, the inlet end of the tank is connected to an auxiliary driving agent replenishment device, and the outlet end of the tank is connected to a wellhead device.

[0011] The booster supply assembly also includes a stirring device, whose stirring element extends into the tank.

[0012] The stirring device includes a support unit and a lifting component that can slide up and down, which is installed on the support unit, and the stirring element is installed on the lifting component.

[0013] A water-jacketed furnace is used to heat the storage tank to heat the driving agent inside the tank to a certain temperature. and

[0014] Among them, T m The optimal temperature for enzyme activity, T f This refers to the inactivation temperature of biological enzymes.

[0015] Furthermore, the filling device is equipped with an electromagnetic induction heating coil connected to a frequency modulation cabinet on the ground via a cable;

[0016] The electromagnetic induction heating coil can preheat the dispensing device, and when the temperature of the auxiliary driving agent in the dispensing device is below T... m At that time, it can help raise the temperature of the driving agent.

[0017] Furthermore, the refueling device includes:

[0018] The mandrel tube is open at the top and closed at the bottom, with the top end connected to the wellhead device; the mandrel tube has a first water outlet.

[0019] The intermediate cylinder is coaxially fixedly sleeved on the outside of the mandrel tube, and is provided with a second water outlet. The first water outlet and the second water outlet are connected and located at the same height.

[0020] A hydraulic cylinder is coaxially fixedly sleeved on the outside of the intermediate cylinder. An installation space is formed between the inner wall of the hydraulic cylinder and the outer wall of the intermediate cylinder. A closed spacer is fixedly installed in the installation space. The lower end of the closed spacer is flush with the upper opening of the second water outlet. The electromagnetic induction heating coil is installed on the upper end of the closed spacer.

[0021] The hydraulic cylinder is also provided with several vertical passages arranged in a circumferential array that are connected to the second water outlet, and the upper end of the vertical passages is flush with the lower end of the second water outlet; the side wall of the hydraulic cylinder is also provided with a booster outlet that is connected to the vertical passages.

[0022] Furthermore, a valve assembly is provided in the vertical passage, and the second outlet is connected to the auxiliary driving agent inlet of the valve assembly. The valve assembly also includes an auxiliary driving agent outlet, and the auxiliary driving agent outlet is connected to the auxiliary driving agent outlet.

[0023] A temperature sensor is also installed on the inner wall of the mandrel tube, and the temperature sensor is located at the upper edge of the electromagnetic induction heating coil.

[0024] Furthermore, the valve assembly includes:

[0025] The valve body is fixedly installed in the vertical passage; wherein, the valve body is provided with an auxiliary driving agent inlet and an auxiliary driving agent outlet, and the auxiliary driving agent inlet and the auxiliary driving agent outlet are respectively connected to the second water outlet and the auxiliary driving agent outlet.

[0026] When the temperature t at the inlet of the valve assembly is greater than or equal to the first threshold, the outlet of the auxiliary agent is fully opened.

[0027] When the temperature t at the inlet of the valve assembly is less than or equal to the second threshold, the outlet of the auxiliary agent is completely closed, and the first threshold is greater than the second threshold.

[0028] When the temperature at the inlet of the valve assembly is between the second threshold and the first threshold, the opening degree of the outlet of the auxiliary agent is in a partially open state, and the opening degree is positively correlated with the temperature at the inlet of the auxiliary agent.

[0029] Furthermore, both the inlet and outlet of the auxiliary agent are configured as cavities with a square cross-section. The central axis of the auxiliary agent inlet coincides with the central axis of the valve body, and the central axis of the auxiliary agent outlet is perpendicular to and intersects the central axis of the valve body.

[0030] A square-section component configuration space is provided on the bottom wall of the valve body at the end away from the auxiliary driving agent inlet, and the central axis of the component configuration space coincides with the central axis of the valve body.

[0031] The component configuration space is connected to both the auxiliary driving agent inlet and the auxiliary driving agent outlet.

[0032] The valve assembly also includes:

[0033] The valve seat outer cylinder is fixedly installed in the parts configuration space, and its configuration is open at the top and closed at the bottom.

[0034] The top pressure seat is fixedly installed at the open end of the valve seat outer cylinder. The top pressure seat extends out of the upper end of the valve seat outer cylinder and is provided with a conical surface that matches the lower opening of the auxiliary driving agent inlet.

[0035] The switch base is movable up and down inside the outer cylinder of the valve seat, and the switch base is located at the lower edge of the top pressure seat;

[0036] A spring element is installed inside the outer cylinder of the valve seat, with its lower end connected to the bottom surface of the outer cylinder and its upper end connected to the lower end surface of the switch seat.

[0037] The temperature bulb is enclosed in the square hole for installation of the temperature bulb in the center of the top pressure seat. The end of the temperature bulb facing the outer cylinder of the valve seat has an actuating rod that extends into the switch seat and the actuating rod can press the switch seat downward.

[0038] Among them, the temperature bulb is provided with several auxiliary driving agent channels in a circular array, and the upper end face of the switch seat facing the temperature bulb is provided with a sealing post. The sealing post extends into the auxiliary driving agent channel and the sealing post matches the auxiliary driving agent channel.

[0039] The valve seat outer cylinder has an auxiliary agent passage opening on its side wall, and the switch seat has a cut-off section on its side wall.

[0040] Furthermore, the closed end of the lower end of the valve seat outer cylinder extends into a parts configuration space, and a flange is provided on the extended closed end.

[0041] An annular sealing groove is provided on the upper end face of the flange, and an O-ring is arranged in the annular sealing groove.

[0042] Furthermore, the valve seat outer cylinder has an annular notch at its open end, and the pressure seat is seated in the annular notch.

[0043] Furthermore, a pressure block is provided on the end face of the switch base facing the temperature bulb, and the pressure block is coaxially configured with the actuating rod.

[0044] Furthermore, the spring element is mounted on the bottom of the valve seat outer cylinder via a spring mounting bracket;

[0045] The spring element includes:

[0046] The active spring is fixedly installed on the upper end of the spring mounting base;

[0047] The passive spring has its lower end in contact with the upper end of the active spring, and its upper end in contact with the switch base.

[0048] The present invention also provides a water-drive bio-enzyme dewaxing and viscosity-reducing agent dosing device, which includes the following steps:

[0049] S1. Connect the inlet end of the storage tank to the booster supply device and the outlet end to the booster inlet of the wellhead device. Start the stirring device to stir the booster in the storage tank.

[0050] S2. Start the water jacket furnace to heat the storage tank, heating the driving agent inside the tank to... in, Temperature greater than the optimal activity temperature T of biological enzymes m ℃, and lower than the inactivation temperature T of biological enzymes. f ℃;

[0051] S3. At the same time, the frequency modulation cabinet energizes the electromagnetic induction heating coil to preheat the filling device for a period of time before de-energizing it.

[0052] S4. The temperature sensor detects the temperature T of the driving agent in the mandrel tube and determines whether the electromagnetic induction heating coil needs to be activated to heat the driving agent in the mandrel tube based on the detected temperature T.

[0053] Compared with the prior art, the advantages of the present invention are as follows:

[0054] 1. By using a surface-mounted water-jacketed furnace to heat the storage tank, in conjunction with electromagnetic induction heating within the injection unit, and fully considering temperature drop, the booster agent in the storage tank is heated to the highest possible temperature on the surface without causing irreversible denaturation and inactivation of the bio-enzyme. The electromagnetic induction heating within the injection unit preheats the unit, reducing temperature drop during the booster agent's flow, and also provides supplemental heating if the booster agent temperature is too low. Therefore, the temperature of the bio-enzyme booster agent injected into the well from the booster agent outlet of the injection unit can be precisely controlled, ensuring the bio-enzyme is in its optimal active state, fully utilizing its viscosity-reducing and pour point-reducing effects, and improving the tertiary oil recovery rate. Simultaneously, waste heat energy from the oilfield is fully utilized, reducing oil displacement costs.

[0055] 2. By setting up above-ground heating equipment for a water-jacketed furnace, underground electromagnetic induction heating equipment, valve components, temperature sensors, and other structures, an intermediate temperature range for the driving agent is proposed. For the driving agent with a temperature range within this range, heating via electromagnetic induction heating coil will not be performed for the time being, pending further evaluation. This approach aims to eliminate as many cases as possible where the ideal temperature T is not reached. m The propulsion agent can enter the reservoir, while avoiding excessive use of electromagnetic induction heating coils, thus meeting the reservoir's influent water temperature requirements and improving economic efficiency.

[0056] 3. The water-driven bio-enzyme dewaxing and viscosity-reducing agent dosing device of this embodiment has self-learning and self-repairing functions, and can determine whether the electromagnetic induction heating coil needs to be activated based on the condition value T. m as well as The more precise the determination, the more economical and efficient the system becomes.

[0057] 4. A cleverly designed valve assembly is provided that is adapted to a water-drive bio-enzyme dewaxing and viscosity-reducing agent dispensing device, t≥T m At this time, the opening degree of the auxiliary displacement end is the largest; t≤ T At that time, the discharge end of the auxiliary driving agent is completely closed; T <t<T m At that time, the degree of opening of the auxiliary driving agent discharge end is between fully open and fully closed, and the degree of opening is positively correlated with the temperature value t.

[0058] 5. The drive motor drives the stirring element to rotate at high speed inside the storage tank to agitate the admixture. During the winding process, the lifting device rises via a rope, which in turn lifts the stirring element. During unwinding, the stirring element descends along with the lifting device under the weight of the lifting device and the drive motor mounted on it. This increases the stirring range of the stirring element along the vertical direction within the storage tank, causing the admixture to move in a turbulent manner, thus increasing the thoroughness and uniformity of the mixing of the bio-enzyme defoaming and viscosity-reducing agent with water.

[0059] 6. By staggering the upper and lower stirring blades on the circumference of the stirring disk, and by making the upward bending angle a1 of the upper stirring blades smaller than the downward bending angle a2 of the lower stirring blades, and by making the angle b1 of the upper stirring blades relative to the tangent of the stirring disk smaller than the angle b2 of the lower stirring blades relative to the tangent of the stirring disk, the turbulent flow pattern of the driving agent is enhanced, which can greatly increase the uniform shearing of the driving agent by the stirring element.

[0060] 7. When the lifting component contacts the contact element, the stirring element will reach the surface of the propellant, reducing the elastic coefficient of the adjustable spring. Under the resistance of the medium, the ball continuously retracts into the sliding groove, and the disc assembly and the power shaft rotate relative to each other. That is, without changing the speed of the power shaft, the rotation speed of the stirring element decreases, preventing the propellant from splashing at the surface of the propellant. When the lifting component does not contact the contact element, the stirring element is relatively far from the surface of the propellant, increasing the elastic coefficient of the adjustable spring to overcome the resistance of the medium. The ball remains engaged with the ball groove, and the disc assembly and the power shaft do not rotate relative to each other, maintaining the high-speed rotation of the stirring element for efficient stirring. Attached Figure Description

[0061] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0062] Figure 1 This is a diagram of the overall structure of the device;

[0063] Figure 2 This is a structural diagram of the filling device;

[0064] Figure 3 This is a cross-sectional view of the filling device;

[0065] Figure 4 for Figure 3 Enlarged view of a portion of point A in the middle;

[0066] Figure 5 for Figure 4 Enlarged view of a section at point B in the middle;

[0067] Figure 6 This is a structural diagram of the valve assembly;

[0068] Figure 7 For valve assembly explosion vision Figure 1 ;

[0069] Figure 8 For valve assembly explosion vision Figure 2 ;

[0070] Figure 9 for Figure 5 Enlarged view of a section at point C;

[0071] Figure 10 This is a partial sectional view of the valve assembly;

[0072] Figure 11 Here is a structural diagram of the stirring device;

[0073] Figure 12 This is a fractured view of the stirring device;

[0074] Figure 13 This is a cross-sectional view of the stirring element;

[0075] Figure 14 for Figure 13 Enlarged view of a section at point D. Detailed Implementation

[0076] To make the objectives, technical solutions, and advantages of this application clearer, the application is described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. All other embodiments obtained by those skilled in the art based on the embodiments provided in this application without inventive effort are within the scope of protection of this application.

[0077] like Figure 1-14As shown, this embodiment provides a water-drive bio-enzyme depressant and viscosity reducer injection device, including an injection device 100 and a wellhead device 200. The injection device 100 is disposed within the casing 300 of the injection well and located at the reservoir, for receiving the booster agent from the wellhead device 200 and injecting it into the reservoir. The wellhead device 200 is disposed at the wellhead of the injection well and is used to inject the booster agent into the injection well. The wellhead device 200 includes a booster agent inlet 210 through which the booster agent is injected into the reservoir. It also includes a booster agent supply assembly 400, whose storage tank 500 contains the booster agent and has an inlet end 510 and an outlet end 520. The inlet end 510 is connected to a booster agent replenishment device, and the outlet end 520 is connected to the booster agent inlet 210 of the wellhead device 200 via a booster agent pipeline 530. The bio-enzyme depressant and viscosity reducer in storage tank 500 is injected into the injection well through the auxiliary agent pipeline 530 to improve the wettability of the rock, reduce the viscosity of high-pour-point oil, improve and enhance the oil-water flow channel, and achieve the purpose of increasing oil injection and displacement.

[0078] To ensure the uniformity of the bio-enzyme dewaxing and viscosity-reducing agent in the admixture, the admixture supply assembly 400 also includes a stirring device 600, whose stirring element 610 extends into the storage tank 500. It is understood that temperature affects the viscosity-reducing and dewaxing effects of the bio-enzyme; the bio-enzyme dewaxing and viscosity-reducing agent... m Its activity is best at ℃, and its viscosity-reducing and de-condensation effects are also the best. When the temperature exceeds T... m The activity will decrease afterward, when the temperature exceeds T. f At temperatures above ℃, the proteins in biological enzymes undergo irreversible denaturation and become inactive.

[0079] Traditional waterflooding bio-enzyme depressant and viscosity reducer injection systems often utilize the water jacket furnace within the oilfield's waste heat recovery system to heat the surface storage tank 500, ensuring the bio-enzyme activity and thus fully utilizing waste heat energy to reduce oil displacement costs. Alternatively, an electromagnetic induction heater can be installed within the underground injection unit 100 to heat the bio-enzyme auxiliary agent, ensuring optimal bio-enzyme activity.

[0080] However, using a waste heat recovery system to heat the above-ground equipment may result in the temperature drop of the above-ground portion of the unit causing the auxiliary driving agent temperature at the outlet side of the charging unit 100 to be lower than T. m Furthermore, the temperature at the outlet side is difficult to control. Using an electromagnetic induction heater installed within the underground filling unit 100 requires a significant amount of additional electrical energy, resulting in high costs.

[0081] To overcome the aforementioned problems, in this embodiment, a water-jacketed furnace (not shown) is used to heat the storage tank 500, and an electromagnetic induction heating coil 110 is installed in the filling device 100, connected to a frequency modulation cabinet 710 on the ground via a cable 700. This heats the driving agent in the storage tank 500 to... Taking into account the temperature drop, this preheating temperature value Significantly greater than T m The ideal temperature at which this booster is injected into the well from the booster outlet 174 of the injection device 100 is lower than the bio-enzyme inactivation temperature T. f This ensures that the enzymes do not undergo irreversible denaturation and inactivation due to excessively high temperatures, while also mitigating the effects of temperature drops, thus keeping the temperature of the driving agent on the 174 side of the outlet close to T. m Therefore, the electromagnetic induction heating coil 110 serves two purposes: first, it preheats the injection device 100, reducing the potential temperature drop of the booster agent during its flow within the device 100, thus maintaining it at a temperature as close to T as possible when injected into the well from the booster agent outlet 174. m Around ℃; secondly, when the temperature of the auxiliary driving agent at the outlet 174 is lower than T m If the temperature is too high, the electromagnetic induction heating coil 110 will be restarted to raise the temperature of the driving agent.

[0082] Through the above configuration, the water-driven bio-enzyme depressant and viscosity-reducing agent injection device of this embodiment heats the storage tank 500 using a surface-mounted water-jacketed furnace, in conjunction with electromagnetic induction heating within the injection device 100. Taking into full account temperature drop, the device heats the booster agent in the storage tank 500 to the highest possible temperature on the surface without causing irreversible denaturation and inactivation of the bio-enzyme. The electromagnetic induction heating within the injection device 100 preheats the device, reducing temperature drop during the booster agent's flow within it, and also provides supplemental heating when the booster agent temperature is too low. Therefore, the temperature of the bio-enzyme booster agent when injected into the well from the booster agent outlet 174 of the injection device 100 can be precisely controlled, ensuring the bio-enzyme is in its optimal active state, fully utilizing its viscosity-reducing and pour-out-reducing effects, and improving the tertiary recovery rate of crude oil. Simultaneously, it fully utilizes waste heat energy at the oilfield site, reducing oil displacement costs.

[0083] The wellhead device 200 also includes a cable inlet 220 through which the cable 700 enters the wellhead device 200 and is connected to the electromagnetic induction heating coil 110 in the injection device 100.

[0084] The injection device 100 in this embodiment includes a mandrel tube 120, an intermediate cylinder 130 coaxially sleeved on the outside of the mandrel tube 120, a conical platform 140 coaxially sleeved on the outside of the intermediate cylinder 130, a rubber sleeve 150, and a front pusher 160. The upper end of the mandrel tube 120 is open and communicates with the wellhead device 200, allowing the booster agent to enter the mandrel tube 120 from its upper end. The intermediate cylinder 130 is fixed relative to the mandrel tube 120, and the front pusher 160 is fixed relative to the intermediate cylinder 130. The conical platform 140 can slide vertically relative to the intermediate cylinder 130, and its upper end is provided with a drive slip 141. The rubber sleeve 150 can slide vertically relative to the intermediate cylinder 130 and is located between the conical platform 140 and the front pusher 160.

[0085] The lower end of the mandrel tube 120 is closed. The mandrel tube 120 includes a first outlet 121, and the intermediate cylinder 130 includes a second outlet 131. The first outlet 121 and the second outlet 131 are connected and located at the same height. Both the first outlet 121 and the second outlet 131 are located below the rubber sleeve 150. Thus, the injection device 100 of this embodiment can inject the booster into the reservoir through the first outlet 121 and the second outlet 131. The conical platform 140 squeezes the rubber sleeve 150 downward, causing it to expand and seal the annular space between the injection device 100 and the injection well casing 300, thereby realizing the injection of the booster into the reservoir at a specific depth.

[0086] The filling device 100 also includes a hydraulic cylinder 170 coaxially sleeved on the outside of the front pusher 160, and the hydraulic cylinder 170 is fixed relative to the spindle tube 120; an installation space 171 is formed between the inner wall of the hydraulic cylinder 170 and the outer wall of the intermediate cylinder 130, and a sealing ring 172 is fixedly installed in the installation space 171. The lower end of the sealing ring 172 is flush with the upper opening of the second water outlet 131, and the electromagnetic induction heating coil 110 is installed at the upper end of the sealing ring 172. Thus, the installation space 171 where the electromagnetic induction heating coil 110 is installed is completely isolated from the water passage by the sealing ring 172, thus protecting the electromagnetic induction heating coil 110. The hydraulic cylinder 170 is also provided with a plurality of vertical passages 173 arranged in a circumferential array, which communicate with the second outlet 131, and the upper end of the vertical passages 173 is flush with the lower end of the second outlet 131; the side wall of the hydraulic cylinder 170 is also provided with a booster outlet 174 communicating with the vertical passages 173. Thus, the booster in the mandrel tube 120 flows successively through the first outlet 121, the second outlet 131, the vertical passages 173 and the booster outlet 174.

[0087] The vertical passage 173 is equipped with a valve assembly 800. The second outlet 131 is connected to the auxiliary agent inlet 811 of the valve assembly 800. The valve assembly 800 also includes an auxiliary agent outlet 812, which is connected to the auxiliary agent outlet 174. A temperature sensor 123 is also provided on the inner wall of the mandrel tube 120. The temperature sensor 123 is located at the upper edge of the electromagnetic induction heating coil 110 to detect the temperature of the auxiliary agent in the mandrel tube 120 and determine whether to heat the auxiliary agent in the mandrel tube 120 through the electromagnetic induction heating coil 110 based on the detected temperature value T.

[0088] Understandably, when the temperature value T of the booster detected by the temperature sensor 123 meets the preset temperature value, the booster can enter the reservoir through the valve assembly 800 and from the booster outlet 174 connected to the vertical passage 173; when the temperature of the booster detected by the temperature sensor 123 does not meet the preset temperature value, the booster is heated by the electromagnetic induction heating coil 110, and then enters the reservoir through the valve assembly 800 and from the booster outlet 174 connected to the vertical passage 173. This ensures that the booster in the mandrel tube 120 enters the reservoir at the specified temperature. Specifically, when the temperature of the booster entering through the booster inlet 811 of the valve assembly 800 does not meet the preset value, the booster outlet 812 is closed, and this is the initial state; conversely, when the temperature of the booster entering through the booster inlet 811 of the valve assembly 800 meets the preset value, the booster outlet 812 is opened. When valve assembly 800 switches from its initial state to the state where the auxiliary discharge end 812 is open, a pre-matched temperature value, namely T, should be used. m The temperature of the driving agent entering through the driving agent inlet 811 of valve assembly 800 is lower than this temperature value T. m At this time, the auxiliary agent discharge end 812 of valve assembly 800 is closed.

[0089] However, through a certain amount of testing and actual practice, the applicant discovered that the previously determined temperature value T... m There will be differences from reality, and in reality, this temperature value T m It will also change with changes in objective conditions. For example, the temperature drop within the entire device will vary under different environments, which will cause the temperature sensor 123 to detect a higher temperature T of the driving agent than the specified temperature value T. m At the same time, it is also possible that the booster output from booster outlet 174 cannot enter the reservoir at the specified temperature.

[0090] To address the aforementioned issues, in this embodiment, the temperature sensor 123 detects the temperature value of the driving agent. At this time, the flooding agent does not need to be heated by the electromagnetic induction heating coil 110. It directly enters the reservoir through the valve assembly 800 and from the flooding agent outlet 174, which is connected to the vertical passage 173. And clearly, Temperature sensor 123 detects the temperature value T of the driving agent. <T m At that time, the booster is heated by the electromagnetic induction heating coil 110, and then enters the reservoir through the valve assembly 800 and the booster outlet 174 connected to the vertical passage 173.

[0091] Furthermore, the temperature value t at the auxiliary driving agent inlet 811 of the valve assembly 800 is ≥ T. m At this time, the opening degree of the auxiliary displacement outlet 812 is the largest, which is D; the temperature value t of the auxiliary displacement inlet 811 of the valve assembly 800 is ≤ T At that time, the auxiliary agent discharge end 812 is completely closed, the opening degree is 0, and it is obvious that... T <T m The temperature value of the auxiliary agent inlet 811 of valve assembly 800 meets the requirements. T <t<T m At that time, the degree of opening of the auxiliary agent discharge end 812 is d, and d∈(0,D), d∝t.

[0092] Therefore, the temperature of the driving agent does not need to be heated by the electromagnetic induction heating coil 110, leaving a certain margin. The method is higher than the ideal temperature value T m At that time, that is, the temperature value of the driving agent detected by temperature sensor 123. At this time, the driving agent does not need to be heated by the electromagnetic induction heating coil 110; the temperature value T of the driving agent detected by the temperature sensor 123 is... <T m At this time, the booster must be heated by the electromagnetic induction heating coil 110, and then enter the reservoir through the valve assembly 800 and the booster outlet 174 connected to the vertical passage 173.

[0093] The temperature value T of the driving agent detected by temperature sensor 123 exceeds the ideal temperature value T. m However, the temperature threshold has not been reached. At that time, that is At this time, the booster agent is not heated by the electromagnetic induction heating coil 110, but directly enters the reservoir through the valve assembly 800 and from the booster agent outlet 174 connected to the vertical passage 173.

[0094] Understandably, the temperature threshold as well as T Determined based on prior experiments or expert experience.

[0095] This embodiment of the water-driven bio-enzyme depressant and viscosity-reducing agent injection device proposes an intermediate temperature range for the auxiliary agent by incorporating a water jacket furnace above-ground heating device, an electromagnetic induction underground heating device, a valve assembly 800, and a temperature sensor 123. For the driving agent whose temperature value falls within this range, heating through electromagnetic induction heating coil 110 will not be performed temporarily, pending further evaluation. This approach aims to eliminate the possibility of not reaching the ideal temperature value T as much as possible. m The propulsion agent can enter the reservoir, while avoiding excessive use of electromagnetic induction heating coil 110 heating, which satisfies the reservoir's influent water temperature requirements and improves economic efficiency.

[0096] It is understandable that the temperature value of the auxiliary driving agent inlet 811 of the valve assembly 800 meets the requirements. T <t<T m At that time, the opening degree of the auxiliary displacement outlet 812 is d, and d∈(0,D), d∝t. That is, the temperature value of the auxiliary displacement inlet 811 of the valve assembly 800 satisfies T <t<T m At this time, the opening degree of the auxiliary agent discharge end 812 is between fully closed and fully open, and the opening degree d is positively correlated with the temperature t. That is, there is a functional relationship between the opening degree d and the temperature t: d = f(t). Moreover, in engineering practice, the temperature value t of the auxiliary agent inlet end 811 of the valve assembly 800 is slightly less than... T It is acceptable.

[0097] It is worth noting that in this embodiment, the auxiliary agent discharge end 812 of the valve assembly 800 is equipped with an opening degree detection unit to detect the opening degree d of the auxiliary agent discharge end 812, such as a flow sensor or a distance sensor, and the temperature signal directly or indirectly acquired by the opening degree detection unit can be fed back to the control system. Therefore, the temperature value t of the auxiliary agent inlet end 811 of the valve assembly 800 is calculated based on the opening degree d of the auxiliary agent discharge end 812, thereby dynamically adjusting the range. Eliminate the negative impacts of changes in operating conditions.

[0098] In this embodiment, the interval Divide the data into several sub-intervals [T0, T1), [T1, T2), ..., [T... i T i+1 ), ..., [T n-1 T n ); where T0 = T m , And there is obvious If T∈[T] i ,T i+1 When i = 1, 2, ..., n, and the opening degree d of the auxiliary driving agent discharge end 812 is detected by the opening degree detection unit to be less than 0.75D, the auxiliary driving agent temperature value T detected by the temperature sensor 123 is adjusted. <T i+1 At that time, the flooding agent needs to be heated by the electromagnetic induction heating coil 110, and then enter the reservoir through the valve assembly 800 and the flooding agent outlet 174, that is... T remains unchanged m Adjusted to T i+1 That is, interval Adjusted to If T∈[T] i ,T i+1 When i = 1, 2, ..., n, and the opening degree detection unit detects that the opening degree d of the auxiliary driving agent discharge end 812 is ≥ 0.75D, then the conditions for starting the electromagnetic induction heating coil 110 are not adjusted temporarily, and the control system records the result. Once the control system records T∈[T i ,T i+1 The degree of opening of the auxiliary driving agent discharge end 812 is detected by the temperature detection unit within the unit. If d ≥ 0.75D is continuously exceeded m times, the auxiliary driving agent temperature value T detected by the temperature sensor 123 is adjusted to be greater than or equal to T. i At this time, the booster does not need to be heated by the electromagnetic induction heating coil 110, and can directly enter the reservoir through the valve assembly 800 and the booster outlet 174.

[0099] In other words, for the interval T∈[T] detected by temperature sensor 123 i ,T i+1 If the opening degree d of the auxiliary displacement outlet 812 detected by the opening degree detection unit fails to reach the threshold even once, the condition that the auxiliary displacement must be heated by the electromagnetic induction heating coil 110 before it can enter the reservoir through the valve assembly 800 and the auxiliary displacement outlet 174 must be adjusted to ensure that the temperature of the auxiliary displacement entering the reservoir through the auxiliary displacement outlet 174 meets the requirements, and that the bio-enzyme depressant and viscosity reducer is at its optimal activity temperature, thus improving the viscosity and pour point reduction effect. Simultaneously, if the temperature range detected by the temperature sensor 123 is T∈[T... i ,T i+1 When the temperature value within the range appears multiple times in a row, the opening degree detection unit detects the degree of opening d of the auxiliary agent discharge end 812. When the threshold is met, the auxiliary agent can be adjusted to enter the reservoir through the valve assembly 800 and the auxiliary agent outlet 174 without being heated by the electromagnetic induction heating coil 110. This shortens the judgment interval and improves the efficiency and economy of the system.

[0100] With the above settings, the water-driven bio-enzyme decoction and viscosity-reducing agent dosing device of this embodiment has self-learning and self-repairing functions, and can determine the condition value T for whether or not the electromagnetic induction heating coil 110 needs to be activated. m as well as The more precise the determination, the more economical and efficient the system becomes.

[0101] To achieve t≥T m At this time, the opening degree of the auxiliary driving agent discharge end 812 is the largest; t≤ T At that time, the auxiliary driving agent discharge end 812 is completely closed;T <t<T m At this time, the opening degree of the auxiliary agent discharge end 812 is between fully open and fully closed, and the opening degree is positively correlated with the temperature value t. In this embodiment, the valve assembly 800 includes a valve body 810 that is generally cylindrical. The valve body 810 has an auxiliary agent inlet end 811 and an auxiliary agent discharge end 812 respectively. Both the auxiliary agent inlet end 811 and the auxiliary agent discharge end 812 are configured as cavities with square cross sections, and the auxiliary agent inlet end 811 and the auxiliary agent discharge end 812 are respectively connected to the second water outlet 131 and the auxiliary agent outlet 174. The central axis of the auxiliary agent inlet end 811 coincides with the central axis of the valve body 810, and the central axis of the auxiliary agent discharge end 812 is perpendicular to and intersects the central axis of the valve body 810. Among them, a square-section component configuration space 813 is provided on the bottom wall of the valve body 810 at the end away from the auxiliary driving agent inlet 811, and the central axis of the component configuration space 813 coincides with the central axis of the valve body 810; the component configuration space 813 is connected to the auxiliary driving agent inlet 811 and the auxiliary driving agent outlet 812 respectively, that is, the auxiliary driving agent inlet 811 and the auxiliary driving agent outlet 812 are connected through the component configuration space 813.

[0102] A valve seat outer cylinder 820 is disposed within the component configuration space 813. The upper end of the valve seat outer cylinder 820 is open, and the lower closed end of the valve seat outer cylinder 820 extends out of the component configuration space 813. A flange 821 is disposed at the extended closed end to fix the valve seat outer cylinder 820 relative to the valve body 810. An annular sealing groove 822 is disposed on the upper end face of the flange 821, and an O-ring 830 is arranged in the annular sealing groove 822. A pressure seat 840 is disposed at the open end of the valve seat outer cylinder 820 to seal the space between the auxiliary driving agent inlet 811 and the component configuration space 813.

[0103] Specifically, the valve seat outer cylinder 820 has an annular notch 823 at its open end, and the pressure seat 840 is seated within the annular notch 823. The pressure seat 840 extends beyond the upper end of the valve seat outer cylinder 820 and has a conical surface 841 that mates with the lower opening of the auxiliary agent inlet 811. When the valve seat outer cylinder 820 is connected to the valve body 810, the valve seat outer cylinder 820 presses against the pressure seat 840, and the conical surface 841 abuts against the lower opening of the auxiliary agent inlet 811. A switch seat 850 that can move up and down is also provided inside the valve seat outer cylinder 820, and the switch seat 850 is located at the lower edge of the pressure seat 840. A spring element 860 is also provided inside the valve seat outer cylinder 820, and the lower end of the spring element 860 is connected to the bottom surface of the valve seat outer cylinder 820, and the upper end is connected to the lower end face of the switch seat 850. The top pressure seat 840 also has a square hole 842 for mounting a temperature sensor in the center. A conical surface 841 is located on the outer edge of the square hole 842. A temperature sensor 870 for sealing the square hole 842 is connected inside the square hole 842. The end of the temperature sensor 870 facing the outer cylinder 820 of the valve seat has an actuating rod 871 that extends into the switch seat 850. A pressure block 851 is provided on the end face of the switch seat 850 facing the temperature sensor 870, and the pressure block 851 and the actuating rod 871 are coaxially configured.

[0104] When the ambient temperature rises, the temperature bulb 870 drives the actuating rod 871 to move inward toward the inner part of the valve seat outer cylinder 820, which in turn drives the switch seat 850 to move inward toward the inner part of the valve seat outer cylinder 820. t≤ T At this time, the force of the heating element 870 driving the actuating rod 871 due to thermal expansion is lower than the elastic force of the spring element 860, the upper end of the switch seat 850 abuts against the lower end of the pressure seat 840, and the valve assembly 800 is in a fully closed state; t> T When the temperature bulb 870 expands due to heat, the force of the actuating rod 871 exceeds the elastic force of the spring element 860, the switch seat 850 begins to move downward, the valve assembly 800 begins to open, and as the temperature further increases, the opening degree of the valve assembly 800 increases accordingly; until t = Tm, the limit device prevents the switch seat 850 from moving further downward, and the opening degree of the valve assembly 800 reaches its maximum.

[0105] A plurality of driving agent passages 872 are arranged in a circular array on the temperature bulb 870. A sealing post 852 is provided on the upper end surface of the switch base 850 facing the temperature bulb 870. The sealing post 852 extends partially into the driving agent passage 872 and matches the driving agent passage 872. Thus, at relatively high temperatures, the switch base 850 moves the sealing post 852 downward, causing the sealing post 852 to disengage from the driving agent passage 872, opening the driving agent passage 872. The medium can then enter the component configuration space 813 from the driving agent inlet 811, that is, the driving agent enters the space formed by the pressure seat 840 and the switch base 850 from the driving agent inlet 811. At relatively low temperatures, the upper end of the switch base 850 abuts against the lower end of the pressure seat 840, and the sealing post 852 closes the driving agent passage 872.

[0106] The valve seat outer cylinder 820 has a drive agent passage 824 on its side wall, and the switch seat 850 has a cut-off portion 853 on its side wall. At relatively high temperatures, the switch seat 850 moves downwards, and the cut-off portion 853 overlaps with the drive agent passage 824, allowing the drive agent in the space formed by the pressure seat 840 and the switch seat 850 to enter the drive agent discharge end 812. At relatively low temperatures, the thermal expansion of the temperature bulb 870 drives the actuating rod 871 with a force lower than the elastic force of the spring element 860. The upper end of the switch seat 850 abuts against the lower end of the pressure seat 840, and the sealing post 852 closes the drive agent passage 872. Therefore, the drive agent cannot enter the space formed by the pressure seat 840 and the switch seat 850 from the drive agent inlet end 811.

[0107] The above configuration provides a cleverly designed valve assembly adapted to a water-driven bio-enzyme dewaxing and viscosity-reducing agent dispensing device, where t≥T m At this time, the opening degree of the auxiliary driving agent discharge end 812 is the largest; t≤ T At that time, the auxiliary driving agent discharge end 812 is completely closed; T <t<T m At that time, the opening degree of the auxiliary driving agent discharge end 812 is between fully open and fully closed, and the opening degree is positively correlated with the temperature value t.

[0108] In this embodiment, the spring element 860 is mounted on the bottom of the valve seat outer cylinder 820 via a spring mounting base 861. The spring element 860 includes a passive spring 862 and a driving spring 880 connected in series. The driving spring 880 is fixedly mounted on the upper end of the spring mounting base 861. The lower end of the passive spring 862 contacts the upper end of the driving spring 880, and the upper end of the passive spring 862 contacts the switch seat 850. Thus, the overall elastic coefficient of the spring element 860 can be changed by adjusting the elastic coefficient of the driving spring 880. Specifically, the active spring 880 includes a mounting unit 881, a coil 882, and a magnetorheological elastomer 883. The mounting unit 881 is fixedly mounted on the upper end face of the spring mounting base 861, and is arranged sequentially from the outside to the inside with mounting cylinder 1 884, mounting cylinder 2 885, and mounting cylinder 3 886. The coil 882 is wound around the outside of mounting cylinder 2 885. The magnetorheological elastomer 883 is disposed between mounting cylinder 2 885 and mounting cylinder 3 886. The upper end of mounting cylinder 2 885 extends inward and is provided with a limiting protrusion ring 887 to prevent the magnetorheological elastomer 883 from axially displacing from the mounting unit 881. The inner diameter of the limiting protrusion ring 887 is larger than the outer diameter of the passive spring 862, which can ensure that the lower end of the mechanical spring 862 contacts the magnetorheological elastomer 883. A spring sleeve post 854 is also fixedly installed at the lower end of the switch base 850, and the spring sleeve post 854 extends partially into the interior of the mounting cylinder 886. The outer diameter of the spring sleeve post 854 is equal to the inner diameter of the mounting cylinder 886, and the mechanical spring 862 is sleeved on the outside of the spring sleeve post 854.

[0109] In this embodiment, the stirring device 600 is equipped with a high-speed rotating stirring element 610, which extends into the center of the storage tank 500 to ensure the uniformity of the mixing between the bio-enzyme decoctionter and water. In other words, the stirring device 600 includes a support unit 620 and a vertically sliding lifting member 630 mounted on the support unit 620. The stirring element 610 is mounted on the lifting member 630, allowing the high-speed rotating stirring element 610 to move within the storage tank 500, thereby ensuring that the admixture in the storage tank 500 is stirred in the vertical direction, improving the stirring effect.

[0110] Specifically, the support unit 620 includes a mounting base 621 and an F-shaped support frame 622 fixedly mounted on the upper end of the mounting base 621. A lower mounting frame 624 is fixedly mounted at the front end of the vertical part 623 of the F-shaped support frame 622. A guide limiting tube 625 is fixedly mounted at the upper end of the lower mounting frame 624, and the guide limiting tube 625 extends upward to the lower end of the upper mounting frame 626 of the F-shaped support frame 622, with the upper mounting frame 626 located above the lower mounting frame 624. The lifting component 630 includes a guide limiting round tube 631 and a vertical mounting plate 632. The inner diameter of the guide limiting round tube 631 matches the outer diameter of the guide limiting tube 625. The vertical mounting plate 632 is fixedly mounted at the front end of the guide limiting round tube 631. The stirring element 610 is mounted on the vertical mounting plate 632, so that the high-speed rotating stirring element 610 can move up and down with the lifting component 630. A vertical mounting frame 627 is also provided on the lower mounting frame 624, and the vertical mounting frame 627 is located between the guide limiting riser 625 and the vertical part 623 of the F-shaped support frame 622. A winding device is installed inside the vertical mounting frame 627, and a rope 640 is wound around the winding device. The end of the rope 640 away from the winding device is fixedly connected to the lifting member 630. Thus, when the winding device winds up, the lifting member 630 is driven to rise through the rope 640, which in turn drives the stirring element 610 to rise. When the winding device unwinds, the stirring element 610 descends along with the lifting member 630 under the weight of the lifting member 630 and the stirring element 610 installed on the lifting member 630. Preferably, the lifting member 630 also includes a rope connecting part 633 provided on the upper end of the vertical mounting plate 632, and the end of the rope 640 away from the winding device is fixedly connected to the rope connecting part 633. A drive motor 650 is fixedly mounted on the front end of the vertical mounting plate 632. The output end of the drive motor 650 is connected to a power shaft 651, and the stirring element 610 is mounted on the lower end of the power shaft 651. It is worth noting that in this embodiment, the stirring element 610 is detachably mounted on the lower end of the power shaft 651 to facilitate the inspection and replacement of the stirring element 610.

[0111] Understandably, during operation, the drive motor 650 drives the stirring element 610 to rotate at high speed within the storage tank 500, agitating the admixture. When the winding device winds up, the lifting member 630 is raised via the rope 640, which in turn raises the stirring element 610. When the winding device unwinds, the stirring element 610 descends along with the lifting member 630 under the weight of the lifting member 630 and the drive motor 650 mounted on it. This increases the range of agitation of the stirring element 610 along the vertical direction within the storage tank 500, allowing the admixture to move in a turbulent manner within the tank 500, thus increasing the thoroughness and uniformity of the mixing of the bio-enzyme defoaming and viscosity-reducing agent with water in the admixture.

[0112] In this embodiment, the stirring element 610 includes a stirring disk 611 mounted on the lower end of the power shaft 651. The edge of the stirring disk 611 is provided with a plurality of upwardly curved upper stirring blades 612 and a plurality of downwardly curved lower stirring blades 613. The plurality of upper stirring blades 612 are arranged in a circumferential array, and the plurality of lower stirring blades 613 are also arranged in a circumferential array. The upper stirring blades 612 and lower stirring blades 613 are staggered in the circumferential direction of the stirring disk 611. The upward bending angle a1 of the upper stirring blades 612 is smaller than the downward bending angle a2 of the lower stirring blades 613, and the angle b1 of the upper stirring blades 612 relative to the cross-section of the stirring disk 611 is smaller than the angle b2 of the lower stirring blades 613 relative to the cross-section of the stirring disk 611.

[0113] The stirring device 600 of this embodiment, by having upper stirring blades 612 and lower stirring blades 613 staggered in the circumferential direction of the stirring disk 611, and the upper stirring blades 612 bending upward at an angle a1 smaller than the lower stirring blades 613 bending downward at an angle a2, and the upper stirring blades 612 tilting at an angle b1 relative to the cross-section of the stirring disk 611 smaller than the lower stirring blades 613 tilting at an angle b2 relative to the cross-section of the stirring disk 611, enhances the turbulent flow of the driving agent and can greatly increase the uniform shearing of the driving agent by the stirring element 610.

[0114] In this embodiment, the storage tank 500 includes a tank body 540 and a cover 550, with an inlet end 510 disposed on the cover 550. A circular hole 551 is formed in the center of the cover 550, and the inner diameter of the circular hole 551 matches the outer diameter of the power shaft 651. This ensures that the circular hole 551 does not interfere with the rotation and lifting of the power shaft 651, while maintaining the airtightness of the storage tank 500 and preventing the driving agent from splashing out. It is understood that before the stirring device 600 of this embodiment operates, the stirring element 610 is first raised above the upper opening of the tank body 540, then the tank body 540 is moved below the stirring element 610, then the stirring element 610 is lowered into the tank body 540, and finally the cover 550 is placed on the tank body 540.

[0115] The stirring device 600 of this embodiment includes a clamping mechanism 660 on the support unit 620. This clamping mechanism 660 is used to mount the storage tank 500 onto the stirring device 600, thereby improving the stability of the storage tank 500 and preventing the driving agent from impacting the tank and causing it to shake. Specifically, the clamping mechanism 660 includes a mounting channel steel 661, a pair of side front clamping units 662 hinged to the mounting channel steel 661, and a rear straight clamping unit 663 fixedly mounted to the mounting channel steel 661. This allows for clamping the storage tank 500 from three points, ensuring its stability.

[0116] In this embodiment, a disc coupling 670 is sleeved on the lower end of the power shaft 651, and the stirring disc 611 is fixedly connected to the disc coupling 670. A contact element 671 is provided on the guide limiting riser 625, and it is located above the lifting member 630. When the lifting member 630 abuts against the contact element 671, the disc coupling 670 and the power shaft 651 rotate relative to each other; when the lifting member 630 does not abut against the contact element 671, the disc coupling 670 and the power shaft 651 do not rotate relative to each other. Specifically, the outer circumferential wall of the power shaft 651 has four sliding grooves 672, in which a sliding ball 673 is installed. An adjustable spring 674 is also fixedly installed in the sliding groove 672, and the extension end of the adjustable spring 674 is connected to the ball 673. Correspondingly, the inner circumferential wall of the disc connector 670 is provided with a number of ball grooves 675 that match the ball 673, and the ball grooves 675 are arranged continuously.

[0117] Therefore, when the lifting component 630 contacts the contact element 671, the stirring element 610 is about to reach the surface of the driving agent, reducing the elastic coefficient of the adjustable spring 674. Under the resistance of the medium, the ball 673 continuously retracts into the sliding groove 672, and the disc coupling 670 and the power shaft 651 rotate relative to each other. That is, without changing the rotation speed of the power shaft 651, the rotation speed of the stirring element 610 decreases, preventing the stirring element 610 from splashing the driving agent at the surface of the driving agent. When the lifting component 630 does not contact the contact element 671, the stirring element 610 is relatively far away from the surface of the driving agent, increasing the elastic coefficient of the adjustable spring 674 to overcome the resistance of the medium. The ball 673 always remains engaged with the ball groove 675, and the disc coupling 670 and the power shaft 651 do not rotate relative to each other, maintaining the high-speed rotation of the stirring element 610 for efficient stirring.

[0118] In this embodiment, the filling device 100 also includes a connector tube 180 coaxially disposed at the lower end of the mandrel tube 120. When multiple filling devices 100 need to be connected in series, the mandrel tube 120 and the connector tube 180 are connected end to end; and when connected in series, a flow divider valve is provided at the closed end of the mandrel tube 120. The connector tube 180 also serves as the mounting base for some components. Specifically, the mandrel tube 120 and the connector tube 180 are connected by threads. The filling device 100 also includes a transition cylinder 190 seated at the upper end of the connector tube 180, a hydraulic cylinder 170 seated in the transition cylinder 190, and a front pusher 160 seated in the hydraulic cylinder 170. Preferably, fasteners can be used to strengthen the fixed connection of the above structure.

[0119] This embodiment also provides a method for injecting a water-driven bio-enzyme depressant and viscosity reducer, using the above-described water-driven bio-enzyme depressant and viscosity reducer injection device, including the following steps:

[0120] S1. Connect the inlet end 510 of the storage tank 500 to the auxiliary driving agent supply device, and the outlet end 520 to the auxiliary driving agent inlet 210 of the wellhead device 200. Start the stirring device 600 to stir the auxiliary driving agent in the storage tank 500.

[0121] S2. Start the water jacket furnace to heat the storage tank 500, heating the auxiliary driving agent inside the storage tank 500 to... in, Temperature greater than the optimal activity temperature T of biological enzymes m ℃, and lower than the inactivation temperature T of biological enzymes. f ℃;

[0122] S3. At the same time, the frequency modulation cabinet 710 energizes the electromagnetic induction heating coil 110 and de-energizes the filling device 100 after a period of preheating.

[0123] S4. Temperature sensor 123 detects the temperature value T of the driving agent in the mandrel tube 120 and determines whether the electromagnetic induction heating coil 110 needs to be activated to heat the driving agent in the mandrel tube 120 based on the detected temperature value T.

[0124] In this embodiment, S4 includes the following steps:

[0125] S41, the temperature value t≥T at the auxiliary driving agent inlet 811 of valve assembly 800 m At this time, the opening degree of the auxiliary driving agent discharge end 812 is the largest, which is D; t≤ T At that time, the auxiliary agent discharge end 812 is completely closed, the opening degree is 0, and T <T m ;T < t < T m At that time, the degree of opening of the auxiliary driving agent discharge end 812 is d, and d∈(0,D), d∝t; where, T Determined based on preliminary trials or expert experience;

[0126] S42, Temperature sensor 123 detects the temperature value of the driving agent. In this case, the flooding agent does not need to be heated by the electromagnetic induction heating coil 110, but directly enters the reservoir through the valve assembly 800 and from the flooding agent outlet 174 connected to the vertical passage 173. T <T m At that time, the booster is heated by the electromagnetic induction heating coil 110, and then enters the reservoir through the valve assembly 800 and the booster outlet 174 connected to the vertical passage 173. At this time, the flooding agent is not heated by the electromagnetic induction heating coil 110, but directly enters the reservoir through the valve assembly 800 and from the flooding agent outlet 174 connected to the vertical passage 173; wherein, Determined based on preliminary trials or expert experience;

[0127] S43, the interval Divide the data into several sub-intervals [T0, T1), [T1, T2), ..., [T... i T i+1 ), ..., [T n-1 T n ); where T0 = T m , And there is obvious i = 1, 2, ..., n. If T ∈ [T i ,T i+1 When i = 1, 2, ..., n, and the opening degree d of the auxiliary driving agent discharge end 812 is detected by the opening degree detection unit to be less than 0.75D, the auxiliary driving agent temperature value T detected by the temperature sensor 123 is adjusted. <T i+1 At that time, the flooding agent needs to be heated by the electromagnetic induction heating coil 110, and then enter the reservoir through the valve assembly 800 and the flooding agent outlet 174, that is... T remains unchanged m Adjusted to T i+1 That is, interval Adjusted to If T∈[T] i ,T i+1 When i = 1, 2, ..., n, and the opening degree detection unit detects that the opening degree d of the auxiliary driving agent discharge end 812 is ≥ 0.75D, then the conditions for starting the electromagnetic induction heating coil 110 are not adjusted temporarily, and the control system records the result. Once the control system records T∈[T i ,T i+1 The degree of opening of the auxiliary driving agent discharge end 812 is detected by the temperature detection unit within the unit. If d ≥ 0.75D is continuously exceeded m times, the auxiliary driving agent temperature value T detected by the temperature sensor 123 is adjusted to be greater than or equal to T. i At this time, the booster does not need to be heated by the electromagnetic induction heating coil 110, and can directly enter the reservoir through the valve assembly 800 and the booster outlet 174.

[0128] In this embodiment, in S1, when the lifting member 630 contacts the contact element 671, the stirring element 610 is about to reach the liquid surface of the driving agent, reducing the elastic coefficient of the adjustable spring 674, causing the disc coupling member 670 and the power shaft 651 to rotate relative to each other, and the rotation speed of the stirring element 610 decreases; when the lifting member 630 does not contact the contact element 671, the stirring element 610 is relatively far away from the liquid surface of the driving agent, increasing the elastic coefficient of the adjustable spring 674, and the disc coupling member 670 and the power shaft 651 do not rotate relative to each other, maintaining the high-speed rotation of the stirring element 610 for efficient stirring.

[0129] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A water-driven bio-enzyme dewaxing and viscosity-reducing agent dispensing device, comprising: Wellhead device, installed at the wellhead of the injection well, is used to inject the driving agent into the injection well; The injection device is installed inside the injection well casing and located at the reservoir. It is used to receive the booster agent from the wellhead device and inject the booster agent into the reservoir. The auxiliary driving agent supply component has a tank containing auxiliary driving agent, the inlet end of the tank is connected to an auxiliary driving agent replenishment device, and the outlet end of the tank is connected to a wellhead device. The booster supply assembly also includes a stirring device, whose stirring element extends into the tank. The stirring device includes a support unit and a lifting component that can slide up and down, which is installed on the support unit, and the stirring element is installed on the lifting component. Its characteristic is that a water-jacketed furnace is used to heat the storage tank to heat the driving agent inside the tank to a certain temperature. and in, The optimal temperature for the activity of biological enzymes. This refers to the inactivation temperature of biological enzymes. Furthermore, the filling device is equipped with an electromagnetic induction heating coil connected to a frequency modulation cabinet on the ground via a cable; The electromagnetic induction heating coil can preheat the dispensing device, and when the temperature of the auxiliary driving agent in the dispensing device is below T... m At that time, it can raise the temperature of the driving agent; The refueling device includes: The mandrel tube is open at the top and closed at the bottom, with the top end connected to the wellhead device; the mandrel tube has a first water outlet. The intermediate cylinder is coaxially fixedly sleeved on the outside of the mandrel tube, and is provided with a second water outlet. The first water outlet and the second water outlet are connected and located at the same height. A hydraulic cylinder is coaxially fixedly sleeved on the outside of the intermediate cylinder. An installation space is formed between the inner wall of the hydraulic cylinder and the outer wall of the intermediate cylinder. A closed spacer is fixedly installed in the installation space. The lower end of the closed spacer is flush with the upper opening of the second water outlet. The electromagnetic induction heating coil is installed on the upper end of the closed spacer. The hydraulic cylinder is also provided with several vertical passages in a circumferential array that are connected to the second water outlet, and the upper end of the vertical passages is flush with the lower end of the second water outlet; the side wall of the hydraulic cylinder is also provided with a booster outlet that is connected to the vertical passages. A valve assembly is installed in the vertical passage. The second outlet is connected to the auxiliary driving agent inlet of the valve assembly. The valve assembly also includes an auxiliary driving agent outlet, which is connected to the auxiliary driving agent outlet. A temperature sensor is also provided on the inner wall of the mandrel tube, and the temperature sensor is located at the upper edge of the electromagnetic induction heating coil. The valve assembly includes: The valve body is fixedly installed in the vertical passage; wherein, the valve body is provided with an auxiliary driving agent inlet and an auxiliary driving agent outlet, and the auxiliary driving agent inlet and the auxiliary driving agent outlet are respectively connected to the second water outlet and the auxiliary driving agent outlet. When the temperature t at the inlet of the valve assembly is greater than or equal to the first threshold, the outlet of the auxiliary agent is fully opened. When the temperature t at the inlet of the valve assembly is less than or equal to the second threshold, the outlet of the auxiliary agent is completely closed, and the first threshold is greater than the second threshold. When the temperature value of the auxiliary agent inlet of the valve assembly is between the second threshold and the first threshold, the opening degree of the auxiliary agent outlet is in a partially open state, and the opening degree is positively correlated with the temperature value of the auxiliary agent inlet. Both the inlet and outlet of the auxiliary driving agent are configured as cavities with a square cross-section. The central axis of the auxiliary driving agent inlet coincides with the central axis of the valve body, and the central axis of the auxiliary driving agent outlet is perpendicular to and intersects the central axis of the valve body. A square-section component configuration space is provided on the bottom wall of the valve body at the end away from the auxiliary driving agent inlet, and the central axis of the component configuration space coincides with the central axis of the valve body. The component configuration space is connected to both the auxiliary driving agent inlet and the auxiliary driving agent outlet. The valve assembly also includes: The valve seat outer cylinder is fixedly installed in the parts configuration space, and its configuration is open at the top and closed at the bottom. The top pressure seat is fixedly installed at the open end of the valve seat outer cylinder. The top pressure seat extends out of the upper end of the valve seat outer cylinder and is provided with a conical surface that matches the lower opening of the auxiliary driving agent inlet. The switch base is movable up and down inside the outer cylinder of the valve seat, and the switch base is located at the lower edge of the top pressure seat; A spring element is installed inside the outer cylinder of the valve seat, with its lower end connected to the bottom surface of the outer cylinder and its upper end connected to the lower end surface of the switch seat. The temperature bulb is enclosed in the square hole for installation in the center of the pressure seat. The end of the temperature bulb facing the outer cylinder of the valve seat has an actuating rod that extends into the switch seat and can press the switch seat downward. Among them, the temperature bulb is provided with several auxiliary driving agent channels in a circular array, and the upper end face of the switch seat facing the temperature bulb is provided with a sealing post. The sealing post extends into the auxiliary driving agent channel and the sealing post matches the auxiliary driving agent channel. The valve seat outer cylinder has an auxiliary agent passage opening on its side wall, and the switch seat has a cut-off section on its side wall.

2. The water-driven bio-enzyme decoction and viscosity-reducing agent dosing device according to claim 1, characterized in that, The lower closed end of the valve seat outer cylinder extends out into a parts configuration space, and a flange is provided on the extended closed end; An annular sealing groove is provided on the upper end face of the flange, and an O-ring is arranged in the annular sealing groove.

3. The water-driven bio-enzyme decoction and viscosity-reducing agent dosing device according to claim 1, characterized in that, The valve seat outer cylinder has an annular notch at its open end, and the pressure seat is seated in the annular notch.

4. The water-driven bio-enzyme decoction and viscosity-reducing agent dosing device according to claim 1, characterized in that, A pressure block is provided on the end face of the switch base facing the temperature bulb, and the pressure block is coaxially configured with the actuating rod.

5. The water-driven bio-enzyme decoction and viscosity-reducing agent dosing device according to claim 1, characterized in that, The spring element is mounted on the bottom of the valve seat outer cylinder via a spring mounting bracket; The spring element includes: The active spring is fixedly installed on the upper end of the spring mounting base; The passive spring has its lower end in contact with the upper end of the active spring, and its upper end in contact with the switch base.

6. A method for adding a water-driven bio-enzyme dewaxing and viscosity-reducing agent, characterized in that, Using the water-driven bio-enzyme decoction and viscosity-reducing agent dosing device as described in any one of claims 1 to 5 includes the following steps: S1. Connect the inlet end of the storage tank to the booster supply device and the outlet end to the booster inlet of the wellhead device. Start the stirring device to stir the booster in the storage tank. S2. Start the water jacket furnace to heat the storage tank, heating the driving agent inside the tank to... in, Temperature greater than the optimal activity temperature of biological enzymes And below the inactivation temperature of biological enzymes. ; S3. At the same time, the frequency modulation cabinet energizes the electromagnetic induction heating coil to preheat the filling device for a period of time before de-energizing it. S4. The temperature sensor detects the temperature T of the driving agent in the mandrel tube and determines whether the electromagnetic induction heating coil needs to be activated to heat the driving agent in the mandrel tube based on the detected temperature T.

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