Automatic blending and adding device for drilling fluid treating agent

Abstract

The invention belongs to the technical field of oil and gas drilling, and particularly relates to an automatic blending and adding device for a drilling fluid treating agent. The automatic blending and adding device for the drilling fluid treating agent comprises a tank body; the automatic feeding unit is arranged on the side surface of the tank body, is connected with the top of the tank body and is used for conveying materials from bottom to top and feeding the materials into the tank body; the automatic water supply unit is arranged on the side surface of the tank body, is connected with the top of the tank body and is used for conveying water from bottom to top into the tank body; the stirring unit is arranged on the tank body in the vertical direction; the quantitative adding unit is connected with the lower part of the side surface of the tank body; the automatic control unit is electrically connected with the automatic feeding unit, the automatic water supply unit, the stirring unit and the quantitative adding unit. According to the invention, blending and adding of the drilling fluid treating agent can be realized.

Description

Technical Field

[0001] The invention belongs to the technical field of oil and gas drilling, and in particular relates to an automatic mixing and dosing device for a drilling fluid treatment agent. Background Art

[0002] Drilling fluid is the "blood" of oil drilling projects. It plays an indispensable and important role in the drilling process, such as carrying bottom hole cuttings, lubricating the well wall, ensuring underground safety, and protecting oil and gas layers. Drilling fluid is mainly composed of liquid phase, solid phase and chemical treatment agent in a certain proportion. The liquid phase can be water, oil or emulsion; the solid phase includes bentonite, weighting materials and some cuttings that have not been removed cleanly; chemical treatment agents include inorganic compounds, organic compounds and polymer compounds, which are also the most expensive materials in drilling fluid and account for a large proportion of the total drilling cost. With the increasing difficulty and depth of oil field exploration and development, drilling technology has higher and higher performance requirements for drilling fluids with special functions, making the composition of drilling fluids more and more complex, and the types and quantities of drilling fluid treatment agents used have increased significantly.

[0003] Since the drilling fluid systems and their performance parameters used in different regions, different formations and different well sections vary with the increase of drilling depth, it is necessary to add various drilling fluid treatment agents to the drilling fluid solid control system according to the actual drilling process needs during the drilling process to adjust the drilling fluid performance parameters in real time to meet the actual requirements of the drilling process. The main method used in the past was: on-site manual measurement and calculation, manual handling and unpacking of bags, directly pouring them into the circulation tank of the drilling fluid solid control system, and simply stirring and mixing them with an agitator, and directly participating in the drilling fluid circulation as the drilling fluid flows. The main problems of this method are: low manual measurement and calculation accuracy, inaccurate addition, and a great impact on the adjustment of drilling fluid performance; high labor intensity and low efficiency; uneven stirring and mixing, insufficient maturation time and degree, and the treatment agent is easy to agglomerate and deposit at the bottom and around the drilling fluid circulation tank; as the drilling fluid circulates from the ground to the bottom of the well, the treatment agent is seriously wasted and the consumption increases, resulting in a significant increase in the overall drilling cost; the dust hazard to the human body during manual unpacking and direct addition operations is very serious, and there are great environmental pollution and safety hazards.

[0004] In addition, most of the drilling rigs in my country do not have a system to prevent the cuttings from falling to the ground. During drilling construction, a large circulation pool needs to be dug to store the cuttings and precipitate them. In particular, during the rapid drilling of the upper formation, the solid-liquid mixture containing the cuttings returned from the bottom of the well is directly discharged into the circulation pool for natural sedimentation and solid-liquid separation. The upper clear liquid in the circulation pool is then pumped out by a floating pump and returned to the drilling fluid solid control system for recycling. In order to make the cuttings settle quickly and separate the solids and liquids in the circulation pool, it is often necessary to add a prepared flocculant solution to the circulation pool. The flocculant solution is usually prepared by mixing polyacrylamide dry powder with water in a simple mixing tank in a corresponding proportion. This simple mixing tank is equipped with a warehouse, a mixer, and a vent valve. On-site workers will carry the bagged polyacrylamide dry powder and unpack it and pour it directly into the simple mixing tank and add water in proportion to mix it into a solution, and then it will flow from the vent valve through a hose to the large circulation pool. This addition method is very likely to cause a huge waste of flocculant dry powder, and there are also problems such as uneven mixing, high labor intensity, and low degree of automation. If a certain pressure is required to add the prepared solution into the solid control equipment such as the centrifuge, or if the solution needs to be added at a fixed time and in a fixed quantity, this traditional simple mixing tank and adding method cannot meet the requirements. Moreover, this traditional mixing tank and adding method can only add the solution after a tank of flocculant solution is prepared and added. It is necessary to wait for the next flocculant solution to be fully prepared before adding it again. It cannot work continuously and can only be added intermittently.

[0005] With the increasing implementation of relevant laws and regulations such as my country's Environmental Protection Law and Soil Pollution Prevention and Control Law, higher environmental protection requirements have been put forward for oil exploration and development. During the drilling process, large circulation pools with certain environmental pollution risks are no longer dug. The drilling cuttings-free process must be adopted and equipped with corresponding drilling cuttings-free system equipment. It has been widely promoted and used in my country. During the drilling process using the drilling cuttings-free process, in order to ensure the solid-liquid separation effect of the drilling fluid solid control system and the drilling cuttings-free equipment and reduce the water content of the separated cuttings, it is necessary to continuously and quantitatively add a certain concentration of flocculant solution to the drilling fluid solid control system and the drilling cuttings-free equipment at a certain flow rate. The traditional simple mixing tank and addition method cannot meet this process requirement.

[0006] Therefore, according to the actual situation of petroleum engineering construction, it is necessary to develop an automatic mixing and dosing device for drilling fluid treatment agents. The required type, concentration and capacity of drilling fluid treatment agents should be set according to the drilling process requirements. It can automatically add materials, automatically mix and add them to the drilling fluid solid control system or the drill cuttings prevention system at a fixed time, fixed quantity, fixed speed and fixed pressure, at one point or multiple points.

[0007] Chinese patent CN205109445U discloses a new type of complete set of liquid preparation device for mixing, including a liquid preparation tank, a stirring device is provided on the liquid preparation tank, the stirring device is located at the top of the liquid preparation tank, a support frame is provided at the bottom of the liquid preparation tank, a pressure control device is provided on the liquid preparation tank, a safety valve is provided on the top of the liquid preparation tank, an intermediate processing tank is provided next to the liquid preparation tank, a sealing cover is provided on the intermediate processing tank, a hoisting component is provided on the sealing cover, and a high liquid tank is provided next to the liquid preparation tank. A stirring shaft is provided in the liquid preparation device, which can make the raw materials in the liquid preparation device more fully stirred, ensuring the use effect of the liquid preparation device, and a pressure control device is provided on the liquid preparation device, which can detect the pressure change in the liquid preparation tank, ensuring the safe and stable operation of the liquid preparation device.

[0008] The above technical solution only involves more complete and uniform stirring during the raw material preparation process, and does not have functions such as automatic feeding, automatic mixing, and automatic addition. It is different from the present invention in terms of equipment matching, system composition and structural form.

[0009] Chinese patent CN207063929U discloses an automatic adding device for drilling fluid treatment agent, which includes four transmission double wheels, two conveyor belts and a shell, the four transmission double wheels are located in the same longitudinal plane and are arranged in a trapezoidal shape in the transverse plane, the outer shell of the transmission double wheels is provided with the conveyor belt, the conveyor belt is evenly provided with a plurality of fixed seats, and the two conveyor belts are provided with intervals, the fixed seats are provided with bagged treatment agent, the outer shell of the conveyor belt at the lower end is provided with the shell, the top of the shell is provided with a fan, the middle is provided with a circular shaft, and the bottom is provided with a through mixing funnel, the circular shaft is provided with a rotating blade, and the longitudinal axis of the rotating blade is located in the middle of the interval. The fixed seat on the conveyor belt can fix the bagged treatment agent and transmit it on the conveyor belt, the rotating blade can cut the bagged treatment agent, and cooperate with the fan at the upper end of the shell to blow the powdered treatment agent into the mixing funnel and automatically add it to the drilling fluid circulation tank, which has the advantages of simple structure, high degree of automation, low labor intensity of workers, high efficiency and low dust.

[0010] The above technical solution only involves the transmission of bagged treatment agent and automatic bag breaking and adding to the drilling fluid circulation tank. It does not have the function of automatically preparing a solution according to a certain concentration and automatically adding the treatment agent solution at a fixed time, quantity and point. It is different from the present invention in terms of equipment matching, system composition, structural form and automatic control. Summary of the invention

[0011] In view of the technical problems mentioned above, the present invention aims to provide an automatic mixing and dosing device for drilling fluid treatment agent, which can realize the mixing and dosing of drilling fluid treatment agent.

[0012] According to the present invention, there is provided a device for automatically dispensing and dosing a drilling fluid treatment agent, comprising:

[0013] Tank;

[0014] An automatic feeding unit, which is arranged on the side of the tank body and connected to the top of the tank body, transports materials from bottom to top and feeds them into the tank body;

[0015] An automatic water supply unit, which is arranged on the side of the tank body and connected to the top of the tank body to transport water from bottom to top and into the tank body;

[0016] A stirring unit, wherein the stirring unit is arranged on the tank body along a vertical direction;

[0017] A quantitative dosing unit, the quantitative dosing unit is connected to the lower side of the tank body,

[0018] An automatic control unit is electrically connected to the automatic feeding unit, the automatic water supply unit, the stirring unit and the quantitative dosing unit.

[0019] In a preferred embodiment, the automatic feeding unit includes a feeding funnel, a screw conveyor and a premixer, the premixer is arranged on the top of the tank body, the feeding funnel is arranged on the outer lower side of the tank body, and the two ends of the screw conveyor are respectively connected to the feeding funnel and the premixer.

[0020] In a preferred embodiment, the automatic water supply unit includes a water supply pump and a water supply pipeline. The water supply pump is arranged at the lower outer part of the tank body, and the two ends of the water supply pipeline are respectively connected to the water supply pump and the top of the tank body.

[0021] In a preferred embodiment, a solenoid valve and an electromagnetic flowmeter are provided on the water supply pipeline.

[0022] In a preferred embodiment, the tank body includes a plurality of mixing chambers, and two adjacent mixing chambers are connected by a valve.

[0023] In a preferred embodiment, two adjacent blending bins are connected via a seabed valve and a gate valve.

[0024] In a preferred embodiment, the quantitative dosing unit comprises a discharge main pipe, on which a plurality of dosing point control valves are arranged.

[0025] In a preferred embodiment, the quantitative dosing unit comprises:

[0026] A suction main pipe, the suction main pipe is connected to the tank body, and an electric butterfly valve is arranged on the suction main pipe;

[0027] A metering pump is arranged between the suction manifold and the discharge manifold.

[0028] In a preferred embodiment, a filter is provided between the suction main pipe and the metering pump, and a bypass desilting branch pipe is provided between the filter and the metering pump.

[0029] In a preferred embodiment, an overflow safety valve is connected to the outlet end of the metering pump, and the overflow safety valve is connected to the tank body.

[0030] Compared with the prior art, the advantages of the present application are as follows.

[0031] The present invention comprises a tank body, an automatic feeding unit, an automatic water supply unit, a stirring unit, a quantitative dosing unit and an automatic control unit, and provides a drilling fluid treatment agent dry powder or concentrated liquid automatic dilution, automatic mixing and preparation, continuous automatic dosing and remote control device for drilling fluid performance adjustment and treatment, which meets the requirements for the type, capacity, pressure, flow rate and addition speed of the drilling fluid treatment agent solution to be added during the drilling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention will be described below with reference to the accompanying drawings.

[0033] Figure 1 A schematic diagram of the top view of an embodiment of the automatic mixing and dosing device for drilling fluid treatment agent according to the present invention is shown;

[0034] Figure 2 It shows a left-side structural schematic diagram of an embodiment of the automatic mixing and dosing device for drilling fluid treatment agent according to the present invention;

[0035] Figure 3 A schematic diagram showing electrical connections between the automatic control unit and other components according to the present invention is shown.

[0036] In the figure: 102, automatic feeding unit; 103, automatic water supply unit; 104, stirring unit; 105, quantitative dosing unit; 1, tank; 2, first mixer; 3, water supply pump; 4, electromagnetic valve; 5, electromagnetic flowmeter; 6, seabed valve; 7, feeding funnel; 8, screw conveyor; 9, premixer; 10, gate valve; 11, second mixer; 12, second mixing bin; 13, second ultrasonic level meter; 14, second electric butterfly valve; 15, second filter; 16, second overflow safety valve; 17, second metering pump; 18, second metering discharge branch pipe; 19, second metering discharge control valve; 2 0. Second bypass desilting branch pipe; 21. Second metering suction branch pipe; 22. Suction main pipe; 23. Dosing point control valve; 24. Discharge main pipe; 25. First metering suction branch pipe; 26. First metering discharge control valve; 27. First bypass desilting branch pipe; 28. First metering discharge branch pipe; 29. ​​First metering pump; 30. First overflow safety valve; 31. Automatic control unit; 32. First filter; 33. First electric butterfly valve; 34. First mixing bin; 35. First ultrasonic level meter; 36. Bracket; 37. Base; 38. Water supply pipeline; 100. Automatic mixing and dosing device for drilling fluid treatment agent.

[0037] In the present application, all drawings are schematic drawings, which are only used to illustrate the principles of the present invention and are not drawn according to the actual scale. DETAILED DESCRIPTION

[0038] The present invention will be described below with reference to the accompanying drawings.

[0039] It should be noted that the directional terms or qualifiers "upper", "lower", "front", "back", "left", "right", etc. used in this application are all with reference to the drawings to which they refer. Figure 2 The upper and lower sides of the Figure 2 The right and left sides in Figure 1 They are not intended to define the absolute positions of the components involved but may vary depending on the circumstances.

[0040] Embodiment 1:

[0041] Figure 1 The structure of the automatic mixing and dosing device 100 for drilling fluid treatment agent according to the present invention is shown. Figure 1 and Figure 2 As shown, the automatic mixing and dosing device 100 for drilling fluid treatment agent includes an automatic water supply unit 103 , an automatic feeding unit 102 , a stirring unit 104 , a quantitative dosing unit 105 , a tank body 1 and an automatic control unit 31 .

[0042] In a preferred embodiment, the automatic water supply unit 103 , the automatic feeding unit 102 , the stirring unit 104 , the quantitative dosing unit 105 , the tank body 1 and the automatic control unit 31 are integrated and installed on a skid-mounted base 37 .

[0043] like Figure 3 As shown, the automatic control unit 31 is electrically connected to the automatic feeding unit 102, the automatic water supply unit 103, the stirring unit 104 and the quantitative dosing unit 105. During the operation, the parameter control signal of the automatic control unit 31 is set according to the parameters such as the concentration of the drilling fluid treatment agent required for drilling. A second ultrasonic level meter 13 is also arranged in the tank body 1, which measures the liquid height parameters in the tank body 1 in real time online and transmits them to the automatic control unit 31. The automatic control unit 31 can automatically calculate and automatically start to control the operation of the automatic water supply unit 103, the automatic feeding unit 102, and the stirring unit 104, configure the set drilling fluid treatment agent concentration value and capacity according to the requirements, and quantitatively add the prepared drilling fluid treatment agent solution to the circulation tank of the drilling fluid solid control system or the solid control equipment such as the vibrating screen and the centrifuge through the quantitative dosing unit 105, so as to realize the automatic preparation and quantitative dosing of the drilling fluid treatment agent.

[0044] It is easy to understand that the automatic control unit 31 is a prior art, and its specific structure is not the technical point of the present invention, and will not be described in detail here.

[0045] In a specific embodiment, the automatic water supply unit 103 includes a water supply pump 3, an electromagnetic valve 4, an electromagnetic flowmeter 5 and a water supply pipeline 38. The water supply pump 3 is arranged on the outer lower side of the tank body 1, such as Figure 2 As shown, the water supply pump 3 is located at the rear side of the tank body 1 and is fixedly arranged on the base 37. One end of the water supply pipeline 38 is connected to the water supply pump 3, and the other end is connected to the top of the tank body 1. The electromagnetic valve 4 and the electromagnetic flowmeter 5 are arranged on the water supply pipeline 38 in sequence. The automatic control unit 31 can automatically calculate the required water supply amount according to the set concentration of the drilling fluid treatment agent solution, and automatically control the start and stop of the water supply pump 3, the opening and closing of the electromagnetic valve 4, so as to accurately and quantitatively supply water to the tank body 1 through the water supply pipeline 38.

[0046] In a specific embodiment, the automatic feeding unit 102 includes a feeding hopper 7, a screw conveyor 8 and a pre-mixer 9. Figure 2As shown, the feeding funnel 7 is arranged at the lower part of the outer side of the tank body 1. In this embodiment, the feeding funnel 7 is located at the rear side of the tank body 1 and is fixedly arranged on the base 37. The premixer 9 is fixedly arranged on the top of the tank body 1. One end of the screw conveyor 8 is connected to the feeding funnel 7, and the other end is connected to the premixer 9. The screw conveyor 8 is used to convey the drilling fluid treatment agent in the feeding funnel 7 to the premixer 9. The premixer 9 mixes the drilling fluid treatment agent in advance and then enters the tank body 1, so as to prevent the drilling fluid treatment agent from agglomerating. The specific structure of the premixer 9 is the prior art. The bottom feed port of the screw conveyor 8 is connected to the feeding funnel 7, and the top discharge port of the screw conveyor 8 is connected to the premixer 9. The dry powder or concentrated liquid of the treatment agent to be added is placed in the feeding funnel 7. The screw conveyor 8 receives the control signal given by the automatic control unit 31 and can automatically adjust the speed of the screw conveyor 8 by frequency conversion, so as to achieve accurate quantitative addition of the capacity and addition speed of the dry powder or concentrated liquid of the treatment agent to the premixer 9, and fully mix it in the premixer 9 to prevent agglomeration. The premixer 9 can add materials to the first mixing bin 34 or the second mixing bin 12 separately, or can add materials to the first mixing bin 34 and the second mixing bin 12 at the same time.

[0047] In a preferred embodiment, the tank body 1 includes a plurality of mixing chambers, and two adjacent mixing chambers are connected by valves. Figure 1 As shown, the tank body 1 includes a second blending chamber 12 and a first blending chamber 34, which are arranged side by side on the left and right, and a seabed valve 6 and a gate valve 10 are arranged between the second blending chamber 12 and the first blending chamber 34. By controlling the opening and closing of the seabed valve 6 and the gate valve 10, the second blending chamber 12 and the first blending chamber 34 can be connected or closed.

[0048] In a specific embodiment, the mixing unit 104 includes a first mixer 2, a second mixer 11, a seabed valve 6 and a gate valve 10. The tank body 1 is divided into two first mixing chambers 34 and a second mixing chamber 12 of the same size and capacity, which are interconnected or independent of each other through the seabed valve 6 and the gate valve 10 and serve as backup for each other. The first mixer 2 is arranged on the first mixing chamber 34, and the second mixer 11 is arranged on the second mixing chamber 12. The first mixing chamber 34 and the second mixing chamber 12 can respectively mix drilling fluids of different concentrations, or they can be combined into one to mix drilling fluids together.

[0049] In a preferred embodiment, the lower part around the tank body 1 is configured to be in a spherical cap shape to prevent the added drilling fluid treatment agent from accumulating and settling at the bottom around the tank body 1 .

[0050] In a specific embodiment, Figure 1 and Figure 2As shown, the quantitative dosing unit 105 includes a first electric butterfly valve 33, a second electric butterfly valve 14, a first filter 32, a second filter 15, a first overflow safety valve 30, a second overflow safety valve 16, a first metering pump 29, a second metering pump 17, a first metering discharge branch 28, a second metering discharge branch 18, a first metering discharge control valve 26, a second metering discharge control valve 19, a first bypass desilting branch 27, a second bypass desilting branch 20, a first metering suction branch 25, a second metering suction branch 21, a suction main pipe 22, a discharge main pipe 24, a dosing point control valve 23 and a bracket 36.

[0051] The suction main pipe 22 is located at the front side of the tank body 1, and the two ends are respectively connected to the first dispensing bin 34 and the second dispensing bin 12. Two branches, the first metering suction branch pipe 25 and the second metering suction branch pipe 21, are arranged in the middle of the suction main pipe 22, and are respectively connected to the first metering pump 29 and the second metering pump 17. The discharge main pipe 24 is fixedly connected to the base 37 through a bracket 36, and is arranged at the front side of the suction main pipe 22. A plurality of dosing point control valves 23 are arranged at the front side of the discharge main pipe 24. The first metering pump 29 and the second metering pump 17 are respectively connected to the left and right ends of the discharge main pipe 24.

[0052] The second filter 15 and the first filter 32 are respectively arranged between the second metering pump 17, the first metering pump 29 and the suction main pipe 22. Through this arrangement, the prepared drilling fluid can be filtered.

[0053] The second electric butterfly valve 14 and the first electric butterfly valve 33 are both arranged on the suction main pipe 22 . The first electric butterfly valve 33 is located between the first mixing chamber 34 and the first filter 32 , and the second electric butterfly valve 14 is located between the second mixing chamber 12 and the second filter 15 .

[0054] A second bypass silt removal branch 20 and a first bypass silt removal branch 27 are respectively provided on the second metering suction branch 21 and the first metering suction branch 25. By opening the second bypass silt removal branch 20 and the first bypass silt removal branch 27, the solid phase in the second metering suction branch 21 and the first metering suction branch 25 can be cleaned respectively.

[0055] The first metering pump 29 and the second metering pump 17 share a suction main pipe 22 and a discharge main pipe 24, and can operate independently or in parallel. They can individually or simultaneously inhale one or two types of configured drilling fluid treatment agent solutions from the first mixing chamber 34 or the second mixing chamber 12 to meet the requirements for the type, capacity, pressure, flow rate and addition speed of the drilling fluid treatment agent solution to be added during the drilling process.

[0056] The suction main pipe 22 is installed at the outer bottom of the front end of the tank body 1, one end of which is connected to the bottom of the first mixing bin 34, and a first electric butterfly valve 33 is installed on the suction main pipe 22, and the other end is connected to the bottom of the second mixing bin 12, and a second electric butterfly valve 14 is installed on the suction main pipe 22. The automatic control unit 31 controls the opening or closing of the first electric butterfly valve 33 or the second electric butterfly valve 14 to achieve the connection or blockage between the first mixing bin 34 and the second mixing bin 12. One end of the first metering suction branch pipe 25 is connected to the suction main pipe 22, and the other end is connected to the first metering pump 29. One end of the second metering suction branch pipe 21 is connected to the suction main pipe 22, and the other end is connected to the second metering pump 17.

[0057] The discharge main pipe 24 is installed between the first metering pump 29 and the second metering pump 17, one end of which is connected to the first metering discharge branch pipe 28, and a first metering discharge control valve 26 is installed on the first metering discharge branch pipe 28, and the other end is connected to the second metering discharge branch pipe 18, and a second metering discharge control valve 19 is installed on the second metering discharge branch pipe 18. The discharge main pipe 24 is supported by the upper end of the bracket 36 on the base 37.

[0058] The flow and pressure of the metering pump can be adjusted manually or automatically. The first metering discharge branch pipe 28 and the second metering discharge branch pipe 18 are connected to the first overflow safety valve 30 and the second overflow safety valve 16 in bypass connection with the tank body 1, so that the first metering pump 29 and the second metering pump 17 operate according to the set pressure and flow.

[0059] The discharge main pipe 24 is equipped with multiple dosing point control valves 23, which are connected to the delivery pipeline to add the prepared drilling fluid treatment agent solution to one or more dosing points in the drilling fluid solid control system or solid control equipment according to the set flow, pressure and quantity.

[0060] The first ultrasonic liquid level meter 35 and the second ultrasonic liquid level meter 13 are respectively installed in the first mixing bin 34 and the second mixing bin 12 , and can automatically measure the liquid height parameters in the tank body 1 and transmit them to the automatic control unit 31 .

[0061] The automatic control unit 31 can receive the liquid height parameter signal in the tank body 1 collected by the first ultrasonic liquid level meter 35 and the second ultrasonic liquid level meter 13, and the automatic control unit 31 can set and calculate the concentration of the treatment agent to be prepared, the water supply, the treatment agent dry powder or concentrated liquid supply, the addition amount at the dosing point, the equipment operation and control and other parameters and use them as feedback control signals, and can accurately control the operation of the water supply pump 3, the screw conveyor 8, the first mixer 2, the second mixer 11, the first metering pump 29, the second metering pump 17, the solenoid valve 4, the first electric butterfly valve 33, and the second electric butterfly valve 14, and can switch between manual control and automatic control modes.

[0062] The automatic control unit 31 can collect, store, and print out the type, concentration, pressure, flow, addition amount, addition time, existing capacity in the tank 1, and operating parameters of each unit equipment of the added treatment agent, upload them to the host computer, and realize remote start and stop of equipment operation, remote adjustment of parameters, monitoring and control through remote network connection. The entire process from water supply, feeding, mixing and preparation to addition is completely unmanned and remotely automated. It can provide sound and light alarms for liquid level height and system failures. In case of emergency, it will automatically alarm and stop the entire system operation to ensure safe, reliable and stable operation of the system.

[0063] Embodiment 2:

[0064] Refer to the attached Figure 1 , Figure 2 and Figure 3 The working principle of the automatic mixing and dosing device 100 for drilling fluid treatment agent is as follows: according to the type, concentration and volume of drilling fluid treatment agent required by the drilling process, the liquid level in the tank 1 is measured by the first ultrasonic level meter 35 and the second ultrasonic level meter 13, and the water supply pump 3 and the electromagnetic valve 4 of its pipeline are controlled by the automatic control unit 31 to add the required volume of water to the tank 1, and at the same time, the screw conveyor 8 quantitatively conveys the drilling fluid treatment agent powder required to be added in the feeding funnel 7 to the premixer 9, and after being fully mixed, it is added to the first mixing device 100. In the storage bin 34 or the second mixing bin 12, the first mixer 2 or the second mixer 11 is used to mix and stir the mixture until it is sufficiently uniform and matured. The automatic control unit 31 automatically starts the first metering pump 29 or the second metering pump 17, and the prepared one or two types of drilling fluid treatment agent solutions are discharged through one or more dosing point control valves 23 of the main discharge pipe 24. The transmission pipeline is connected to add the prepared drilling fluid treatment agent solution to one or more dosing points in the drilling fluid solid control system or the solid control equipment according to the set flow rate, flow velocity, pressure, and quantitative. The entire process from water supply, feeding, mixing, maturation, and dosing is fully automated, without human intervention, and can be remotely controlled.

[0065] Embodiment three:

[0066] The mixing, blending and automatic adding process is carried out in the first blending bin 34 alone: ​​according to the requirements for the adjustment of the drilling fluid performance in different well sections during the drilling process, or the requirements for efficient solid-liquid separation in the mud non-grounding process, the drilling fluid treatment agent dry powder or granules are first placed in the feeding funnel 7, the seabed valve 6 and the gate valve 10 are closed, the first electric butterfly valve 33 and the second electric butterfly valve 14 are closed, and then the power is turned on, the automatic control unit 31 is started, and the first ultrasonic level meter 35 collects the measured liquid level height parameters in the first blending bin 34 in real time online and transmits them to the automatic control unit 31, and the drilling fluid treatment agent required to be added is automatically calculated according to the set drilling fluid treatment agent concentration and required capacity. The capacity of the drilling fluid treatment agent dry powder and the amount of water that needs to be added are feedback controlled to start or stop the water pump 3, open or close the solenoid valve 4 to complete the addition of the required amount of water to the first dispensing bin 34, and the electromagnetic flowmeter 5 transmits the added water volume parameters to the automatic control unit 31 for storage or use; at the same time, the automatic control unit 31 feedbacks the frequency conversion control to start or stop the screw conveyor 8 to quantitatively transport the drilling fluid treatment agent dry powder that needs to be added in the feeding funnel 7 to the premixer 9 at a certain speed, and then add it to the first dispensing bin 34 after being fully mixed, and stirred and mixed by the first mixer 2. After reaching a sufficiently uniform and mature time, the first metering pump 29 or the second metering pump 17 can be started to add quantitatively. The quantitative addition process using a single first metering pump 29 is as follows: close the second electric butterfly valve 14, open the first electric butterfly valve 33, open the first metering discharge control valve 26, close the second metering discharge control valve 19, and automatically control the control unit 31 to start and control the operation of the first metering pump 29 according to the set parameters, and suck one or two types of drilling fluid treatment agent solutions that have been configured from the first mixing bin 34 and the suction main pipe 22, and through one or more dosing point control valves 23 on the discharge main pipe 24, the transmission pipeline is connected to add the prepared drilling fluid treatment agent solution to one or more dosing points in the drilling fluid solid control system or the solid control equipment according to the set flow rate, flow velocity, pressure, and quantitative.

[0067] On the basis of mixing and preparing in the first preparation bin 34 alone, a quantitative addition process is performed using a single second metering pump 17: the second electric butterfly valve 14 is closed, the first electric butterfly valve 33 is opened, the first metering discharge control valve 26 is closed, and the second metering discharge control valve 19 is opened. The automatic control unit 31 starts to control the operation of the second metering pump 17 according to the set parameters, and the configured one or two types of drilling fluid treatment agent solutions are sucked from the first preparation bin 34 and the suction main pipe 22. Through one or more dosing point control valves 23 on the discharge main pipe 24, the transport pipeline is connected to add the prepared drilling fluid treatment agent solution to one or more dosing points in the drilling fluid solid control system or the solid control equipment according to the set flow rate, flow velocity, pressure, and quantitative.

[0068] On the basis of mixing and preparing in the first preparation bin 34 alone, if a fast and large flow rate addition is required, the first metering pump 29 and the second metering pump 17 can be started simultaneously for quantitative addition: the second electric butterfly valve 14 is closed, the first electric butterfly valve 33 is opened, the first metering discharge control valve 26 is opened, and the second metering discharge control valve 19 is opened. According to the set parameters, the automatic control unit 31 starts and controls the first metering pump 29 and the second metering pump 17 to run simultaneously, and the configured one or two types of drilling fluid treatment agent solutions are sucked from the first preparation bin 34 and the suction main pipe 22. Through one or more dosing point control valves 23 on the discharge main pipe 24, the conveying pipeline can be connected to add the prepared drilling fluid treatment agent solution to one or more dosing points in the drilling fluid solid control system or the solid control equipment according to the set flow rate, flow velocity, pressure, and quantitative.

[0069] Embodiment 4:

[0070] The mixing, blending and automatic adding process is carried out separately in the second blending bin 12: according to the requirements of different well sections for the adjustment of the drilling fluid performance during the drilling process, or the requirements of efficient solid-liquid separation in the mud non-grounding process, the drilling fluid treatment agent dry powder or granules are first placed in the feeding funnel 7, the seabed valve 6 and the gate valve 10 are closed, the first electric butterfly valve 33 and the second electric butterfly valve 14 are closed, and then the power is turned on, the automatic control unit 31 is started, and the second ultrasonic level meter 13 collects the measured liquid level height parameters in the second blending bin 12 in real time online and transmits them to the automatic control unit 31, and the drilling fluid treatment agent required to be added is automatically calculated according to the set drilling fluid treatment agent concentration and required capacity. The capacity of the drilling fluid treatment agent dry powder and the amount of water that needs to be added are feedback controlled to start or stop the water pump 3, open or close the solenoid valve 4 to complete the addition of the required amount of water to the second mixing bin 12, and the electromagnetic flowmeter 5 transmits the parameters of the added water volume to the automatic control unit 31 for storage or use; at the same time, the automatic control unit 31 feedbacks the frequency conversion control to start or stop the screw conveyor 8 to quantitatively transport the drilling fluid treatment agent dry powder that needs to be added in the feeding funnel 7 to the premixer 9 at a certain speed, and add it to the second mixing bin 12 after being fully mixed, and then the first metering pump 29 or the second metering pump 17 can be started to add quantitatively after the second mixer 11 is stirred and mixed to achieve sufficient uniformity and maturation time. The quantitative addition process using a single second metering pump 17 is as follows: open the second electric butterfly valve 14, close the first electric butterfly valve 33, close the first metering discharge control valve 26, open the second metering discharge control valve 19, and automatically control the second metering pump 17 to start operating according to the set parameters. The configured one or two types of drilling fluid treatment agent solutions are sucked from the second mixing bin 12 and the suction main pipe 22, and the prepared drilling fluid treatment agent solutions are added to one or more dosing points in the drilling fluid solid control system or the solid control equipment according to the set flow rate, flow velocity, pressure, and quantitative through one or more dosing point control valves 23 on the discharge main pipe 24 and connected to the delivery pipeline.

[0071] On the basis of mixing and preparing in the second preparation bin 12 alone, a single first metering pump 29 is used for quantitative addition process: the second electric butterfly valve 14 is opened, the first electric butterfly valve 33 is closed, the first metering discharge control valve 26 is opened, and the second metering discharge control valve 19 is closed. The automatic control unit 31 starts and controls the operation of the first metering pump 29 according to the set parameters, and the configured one or two types of drilling fluid treatment agent solutions are sucked from the second preparation bin 12 and the suction main pipe 22. Through one or more dosing point control valves 23 on the discharge main pipe 24, the conveying pipeline is connected to add the prepared drilling fluid treatment agent solution to one or more dosing points in the drilling fluid solid control system or the solid control equipment according to the set flow rate, flow velocity, pressure, and quantitative.

[0072] On the basis of mixing and preparing in the second preparation bin 12 alone, if a fast and large flow rate addition is required, the first metering pump 29 and the second metering pump 17 can be started simultaneously for quantitative addition: the second electric butterfly valve 14 is opened, the first electric butterfly valve 33 is closed, the first metering discharge control valve 26 is opened, and the second metering discharge control valve 19 is opened. According to the set parameters, the automatic control unit 31 starts and controls the first metering pump 29 and the second metering pump 17 to run simultaneously, and the configured one or two types of drilling fluid treatment agent solutions are sucked from the first preparation bin 34 and the suction main pipe 22. Through one or more dosing point control valves 23 on the discharge main pipe 24, the conveying pipeline is connected to add the prepared drilling fluid treatment agent solution to one or more dosing points in the drilling fluid solid control system or the solid control equipment according to the set flow rate, flow velocity, pressure, and quantitative.

[0073] Embodiment five:

[0074] If a larger volume of drilling fluid treatment agent solution needs to be added, the first blending bin 34 and the second blending bin 12 can be used simultaneously for mixing, blending and automatic addition. The process is as follows: According to the requirements for drilling fluid performance adjustment in different well sections during the drilling process, or the requirements for efficient solid-liquid separation in the mud non-grounding process, first place the drilling fluid treatment agent dry powder or granules in the feeding funnel 7, open the seabed valve 6 and the gate valve 10, connect the first blending bin 34 and the second blending bin 12, close the first electric butterfly valve 33 and the second electric butterfly valve 14, then turn on the power, start the automatic control unit 31, and the first ultrasonic level meter 35 and the second ultrasonic level meter 13 collect the measured liquid level height parameters in the first blending bin 34 and the second blending bin 12 in real time online and transmit them to the automatic control unit 31. The concentration and required capacity are used to automatically calculate the required amount of dry powder of drilling fluid treatment agent and the amount of water to be added, and feedback control is used to start or stop the water pump 3 and open or close the solenoid valve 4 to complete the addition of the required amount of water to the first mixing bin 34 and the second mixing bin 12. The electromagnetic flowmeter 5 transmits the added water volume parameters to the automatic control unit 31 for storage or use; at the same time, the automatic control unit 31 feedbacks the frequency conversion control to start or stop the screw conveyor 8 to quantitatively transport the dry powder of drilling fluid treatment agent to be added in the feeding funnel 7 to the premixer 9 at a certain speed, and after being fully mixed, it is added to the first mixing bin 34 and the second mixing bin 12, and is stirred and mixed by the first mixer 2 and the second mixer 11. After reaching a sufficiently uniform and aging time, the first metering pump 29 or the second metering pump 17 can be started for quantitative addition.The quantitative addition process using a single first metering pump 29 is as follows: open the second electric butterfly valve 14 and the first electric butterfly valve 33, open the first metering discharge control valve 26, close the second metering discharge control valve 19, and start the control of the first metering pump 29 according to the set parameters. The configured one or two types of drilling fluid treatment agent solutions are sucked from the first mixing bin 34, the second mixing bin 12, and the suction main pipe 22. Through one or more dosing point control valves 23 on the discharge main pipe 24, the transmission pipeline is connected to add the prepared drilling fluid treatment agent solution to one or more dosing points in the drilling fluid solid control system or the solid control equipment according to the set flow rate, flow rate, pressure, and quantitative; the quantitative addition process using a single second metering pump 17 is as follows: open the second electric butterfly valve 14 and the first electric butterfly valve 33, close the first metering discharge control valve 26, open the second metering discharge control valve 19, and start the control of the second metering pump 17 according to the set parameters. The configured one or two types of drilling fluid treatment agent solutions are sucked from the first mixing bin 34, the second mixing bin 12, and the suction main pipe 22. The distribution chamber 12 and the suction main pipe 22 are used to suck in the fluid. Through one or more dosing point control valves 23 on the discharge main pipe 24, the delivery pipeline is connected to add the prepared drilling fluid treatment agent solution to the drilling fluid solid control system or one or more dosing points in the solid control equipment according to the set flow rate, flow velocity, pressure, and quantitative. If a fast and large flow rate addition is required, the first metering pump 29 and the second metering pump 17 can be started at the same time for quantitative addition: the first electric butterfly valve 33 and the second electric butterfly valve 14 are opened, and the first metering discharge control valve 26 and the second metering discharge control valve 17 are opened. The control valve 19 automatically controls the control unit 31 to start the first metering pump 29 and the second metering pump 17 to run simultaneously according to the set parameters, and sucks one or two types of drilling fluid treatment agent solutions that have been configured from the first mixing tank 34, the second mixing tank 12, and the suction main pipe 22. Through one or more dosing point control valves 23 on the discharge main pipe 24, the transmission pipeline is connected to add the prepared drilling fluid treatment agent solution to one or more dosing points in the drilling fluid solid control system or the solid control equipment according to the set flow rate, flow velocity, pressure, and quantity.

[0075] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0076] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0077] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0078] Finally, it should be noted that the above is only a preferred embodiment of the present invention and does not constitute any limitation to the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the aforementioned embodiments or to replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A drilling fluid treatment agent automatic mixing and dosing device, characterized in that: include: Tank body (1); An automatic feeding unit (102), the automatic feeding unit (102) being arranged on the side of the tank body (1), connected to the top of the tank body (1), conveying materials from bottom to top and feeding them into the tank body (1); An automatic water supply unit (103), the automatic water supply unit (103) being arranged on the side of the tank body (1), connected to the top of the tank body (1), and conveying water from bottom to top and into the tank body (1); a stirring unit (104), the stirring unit (104) being arranged on the tank body (1) in a vertical direction; A quantitative dosing unit (105), the quantitative dosing unit (105) being connected to the lower side of the tank body (1); An automatic control unit (31), wherein the automatic control unit (31) is electrically connected to the automatic feeding unit (102), the automatic water supply unit (103), the stirring unit (104) and the quantitative dosing unit (105).

2. The automatic mixing and dosing device for drilling fluid treatment agent according to claim 1, characterized in that: The automatic feeding unit (102) comprises a feeding hopper (7), a screw conveyor (8) and a premixer (9); the premixer (9) is arranged on the top of the tank body (1); the feeding hopper (7) is arranged on the lower side of the outside of the tank body (1); and the two ends of the screw conveyor (8) are respectively connected to the feeding hopper (7) and the premixer (9).

3. The automatic mixing and dosing device for drilling fluid treatment agent according to claim 1, characterized in that: The automatic water supply unit (103) comprises a water supply pump (3) and a water supply pipeline (38); the water supply pump (3) is arranged at the lower outer portion of the tank body (1); and the two ends of the water supply pipeline (38) are respectively connected to the water supply pump (3) and the top of the tank body (1).

4. The automatic mixing and dosing device for drilling fluid treatment agent according to claim 3, characterized in that: An electromagnetic valve (4) and an electromagnetic flowmeter (5) are provided on the water supply pipeline (38).

5. The automatic mixing and dosing device for drilling fluid treatment agent according to claim 1, characterized in that: The tank body (1) comprises a plurality of mixing chambers, and two adjacent mixing chambers are connected via valves.

6. The automatic mixing and dosing device for drilling fluid treatment agent according to claim 5, characterized in that: Two adjacent blending bins are connected via a seabed valve (6) and a gate valve (10).

7. The automatic mixing and dosing device for drilling fluid treatment agent according to claim 1, characterized in that: The quantitative dosing unit (105) comprises a discharge main pipe (24), and a plurality of dosing point control valves (23) are arranged on the discharge main pipe (24).

8. The automatic mixing and dosing device for drilling fluid treatment agent according to claim 7, characterized in that: The quantitative dosing unit (105) comprises: A suction main pipe (22), the suction main pipe (22) is connected to the tank body (1), and an electric butterfly valve is arranged on the suction main pipe (22); A metering pump is arranged between the suction main pipe (22) and the discharge main pipe (24).

9. The automatic mixing and dosing device for drilling fluid treatment agent according to claim 8, characterized in that: A filter is arranged between the suction main pipe (22) and the metering pump, and a bypass desilting branch pipe is arranged between the filter and the metering pump.

10. The automatic mixing and dosing device for drilling fluid treatment agent according to claim 8, characterized in that: An overflow safety valve is connected to the outlet end of the metering pump, and the overflow safety valve is connected to the tank body (1).

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