Oil field reservoir energy supplementing equipment

Abstract

The invention relates to the technical field of oil field fracturing processes, in particular to oil field reservoir energy supplementing equipment which comprises a skid-mounted base, a stirring device, a sand conveying device, a liquid adding device, a dry adding device, a suction device and a discharging device. The suction device comprises a suction pipeline, a suction pump, a first flow meter and a first control valve, the stirring tank is connected with the suction pipeline, and the suction pipeline is provided with the suction pump, the first flow meter and the first control valve; and the stirring tank is connected with a liquid adding device and a dry adding device. The device is reasonable in structure, water can be conveyed into the stirring tank through the suction device, quartz sand can be conveyed into the stirring tank through the sand conveying device, a powder temporary plugging agent can be added into the stirring tank through the dry adding device, an oil displacement agent can be added into the stirring tank through the liquid adding device, and the device has the functions of supplementing stratum energy, forming cracks and displacing oil; and the transformation volume of the reservoir can be increased, and the energy complementing effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of oil field fracturing technology and is an oil field reservoir energy replenishment device. Background Art

[0002] There are currently three methods for replenishing formation energy for oil wells that are not effectively injected with water: 1. Energy recovery method, the technical process is to shut down oil wells and increase injection of water wells; 2. Water injection pipeline energy replenishment method, the technical process is to directly inject water into the oil wells through the water injection pipeline; 3. Pump truck energy replenishment method, the technical process is to connect the pump truck to the ground pipeline for injection; however, no matter which method of replenishing formation energy is used, the matching energy replenishment equipment cannot achieve the purpose of fracture creation and oil displacement at the same time during the energy replenishment stage.

[0003] Based on the energy replenishment of the pump truck, the present invention develops energy replenishment matching equipment with sand conveying, stirring, dry filling and liquid filling functions, so as to achieve the effect of energy replenishment + fracture creation, increase the transformation volume of the reservoir, and improve the energy replenishment effect. Summary of the invention

[0004] The present invention provides an oilfield reservoir energy replenishment device, which overcomes the deficiencies of the above-mentioned prior art and can effectively solve the problem that the existing oilfield reservoir energy replenishment device has no fracture creation and oil displacement functions.

[0005] The technical solution of the present invention is achieved through the following measures: an oilfield reservoir energy replenishing equipment, including a skid-mounted base, a stirring device, a sand conveying device, a liquid adding device, a dry adding device, a suction device and a discharge device, the skid-mounted base is provided with a stirring device, a sand conveying device, a liquid adding device, a dry adding device, a suction device and a discharge device; the stirring device includes a stirring tank and a stirrer arranged in the stirring tank; the sand conveying device includes a sand bag and a first auger feeder, the bottom of the sand bag is provided with a drop port, the first auger feeder is provided below the drop port, and the outlet of the first auger feeder is connected to the stirring tank; the suction device includes a suction pipe, a suction pump, a first flow meter and a first control valve, the stirring tank is connected with a suction pipe, the suction pipe is provided with a suction pump, a first flow meter and a first control valve; the discharge device includes a discharge pipe and a discharge pump, the bottom of the stirring tank is connected with a discharge pipe, and the discharge pipe is provided with a discharge pump; the stirring tank is connected with a liquid adding device and a dry adding device.

[0006] The following are further optimizations and / or improvements to the above invention: The liquid adding device may include a liquid adding pipeline, a cross-linking pump, a second flow meter and a second control valve. The stirring tank is connected with a liquid adding pipeline, and the liquid adding pipeline is provided with a cross-linking pump, a second flow meter and a second control valve.

[0007] The dry addition device may include an additive tank and a second auger feeder, and the additive tank is connected to the stirring tank via the second auger feeder.

[0008] The oilfield reservoir energy replenishing equipment may further include a controller, a liquid level meter is arranged in the mixing tank, and the suction pump, the cross-linking pump, the first auger feeder, the second auger feeder and the liquid level meter are all connected to the controller.

[0009] The above-mentioned suction pipeline may include a main pipeline and four branch pipelines connected to the main pipeline. The main pipeline is connected to the outlet and the mixing tank. The suction pump, the first flow meter and the first control valve are all arranged on the main pipeline. Each branch pipeline is provided with a third control valve, and the inlet end of each branch pipeline is provided with an oil valve.

[0010] The first control valve, the second control valve and the third control valve may all be manual butterfly valves.

[0011] The present invention has a reasonable structure. It can transport water into the mixing tank through the suction device, transport quartz sand into the mixing tank through the sand transport device, add powder temporary plugging agent into the mixing tank through the dry adding device, and add oil displacement agent into the mixing tank through the liquid adding device. Therefore, the present application has the functions of replenishing formation energy, creating fractures, and displacing oil, which can increase the transformation volume of the reservoir and improve the energy replenishment effect. In addition, the present application can also realize automatic and precise control of the injection liquid displacement, cross-linking ratio, and liquid-sand ratio of added quartz sand. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Attached Figure 1 It is a schematic diagram of the main structure of the best embodiment of the present invention.

[0013] Attached Figure 2 It is a schematic diagram of the top structure of the best embodiment of the present invention.

[0014] Attached Figure 3 FIG. 1 is a circuit diagram of the best embodiment of the present invention.

[0015] The codes in the attached drawings are: 1 is a skid-mounted base, 2 is a mixing tank, 3 is an agitator, 4 is a sand bag, 5 is the first auger feeder, 6 is a suction pump, 7 is a first flow meter, 8 is a first control valve, 9 is a discharge pipeline, 10 is a liquid addition pipeline, 11 is a cross-linking pump, 12 is a second flow meter, 13 is a second control valve, 14 is an additive tank, 15 is a second auger feeder, 16 is a main pipeline, 17 is a branch pipeline, 18 is a third control valve, 19 is an oil pipe, 20 is a liquid level meter, and 21 is a controller. DETAILED DESCRIPTION

[0016] The present invention is not limited by the following embodiments, and specific implementation methods can be determined based on the technical solution of the present invention and actual conditions.

[0017] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached Figure 1The positional relationships such as front, back, top, bottom, left, and right are described according to the layout directions of the drawings in the specification.

[0018] The present invention will be further described below in conjunction with embodiments and drawings: As attached Figure 1-3 As shown, the oilfield reservoir energy replenishing equipment includes a skid-mounted base 1, a stirring device, a sand conveying device, a liquid adding device, a dry adding device, a suction device and a discharge device. The skid-mounted base 1 is provided with a stirring device, a sand conveying device, a liquid adding device, a dry adding device, a suction device and a discharge device; the stirring device includes a stirring tank 2 and a stirrer 3 arranged in the stirring tank 2; the sand conveying device includes a sand bag 4 and a first auger feeder 5, a material drop port is provided at the bottom of the sand bag 4, a first auger feeder 5 is provided below the material drop port, and an outlet of the first auger feeder 5 is connected to the stirring tank 2; the suction device includes a suction pipe, a suction pump 6, a first flowmeter 7 and a first control valve 8, the stirring tank 2 is connected with a suction pipe, and a suction pump 6, a first flowmeter 7 and a first control valve 8 are provided on the suction pipe; the discharge device includes a discharge pipe 9 and a discharge pump, the bottom of the stirring tank 2 is connected with a discharge pipe 9, and a discharge pump is provided on the discharge pipe 9; the stirring tank 2 is connected with a liquid adding device and a dry adding device.

[0019] When in use, the outlet of the discharge pipe 9 is connected to the injection pump truck group, the energy replenishing liquid is transported into the mixing tank 2 through the suction device, and the proppant is transported into the mixing tank 2 through the sand transport device. The proppant can be quartz sand, etc. The powder temporary plugging agent is added into the mixing tank 2 through the dry adding device, and the cross-linking agent or concentrated liquid additive is added into the mixing tank 2 through the liquid adding device. The cross-linking agent or concentrated liquid additive can be an anti-swelling agent, a drainage agent, an oil-displacing agent, etc. After being stirred evenly by the stirrer 3, the mixed liquid is transported to the injection pump truck group by the discharge device, and is pressurized by the injection pump truck group and then injected into the well. Therefore, the present application has the functions of replenishing formation energy, creating fractures, and displacing oil, increasing the transformation volume of the reservoir, and improving the energy replenishment effect.

[0020] The above embodiments may be further optimized and / or improved according to actual needs: As attached Figure 1-2 As shown, the liquid adding device includes a liquid adding pipeline 10, a crosslinking pump 11, a second flowmeter 12 and a second control valve 13. The stirring tank 2 is connected with the liquid adding pipeline 10, and the liquid adding pipeline 10 is provided with the crosslinking pump 11, the second flowmeter 12 and the second control valve 13. When in use, the inlet of the liquid adding pipeline 10 is connected to the crosslinking tank, and the delivery amount of the crosslinking agent or the concentrated liquid additive can be controlled by the arrangement of the crosslinking pump 11, the second flowmeter 12 and the second control valve 13.

[0021] As attached Figure 1-2As shown, the dry adding device includes an additive tank 14 and a second auger conveyor 15 , and the additive tank 14 is connected to the stirring tank 2 via the second auger conveyor 15 .

[0022] As attached Figure 3 As shown, the oilfield reservoir energy replenishment equipment also includes a controller 21, a liquid level meter 20 is provided in the mixing tank 2, and the suction pump 6, the cross-linking pump 11, the first auger feeder 5, the second auger feeder 15 and the liquid level meter 20 are all connected to the controller 21. The suction amount of the suction pump 6 is interlocked with the liquid level of the mixing tank 2, and the suction amount of the suction pump 6 is adjusted according to the liquid level in the mixing tank 2, thereby realizing stable liquid supply; the rotation speed of the cross-linking pump 11 is interlocked with the rotation speed of the suction pump 6, and the cross-linking pump 11 cooperates with the suction pump 6 to realize the adjustment of the energy replenishment liquid-binder ratio; the control of the sand addition amount and the liquid-sand ratio is realized by controlling the rotation speed of the first auger feeder 5.

[0023] As attached Figure 1-2 As shown, the suction pipeline includes a main pipeline 16 and four branch pipelines 17 connected to the main pipeline 16. The main pipeline 16 is connected to the outlet and the mixing tank 2. The suction pump 6, the first flow meter 7 and the first control valve 8 are all arranged on the main pipeline 16. A third control valve 18 is arranged on each branch pipeline 17, and an oil valve 19 is arranged at the inlet end of each branch pipeline 17. The delivery amount of the energy replenishing liquid can be controlled by arranging the suction pump 6, the first flow meter 7 and the first control valve 8. The oil valve 19 is arranged to facilitate the quick connection of the suction pipeline and the liquid tank.

[0024] Specifically, the first control valve 8 , the second control valve 13 and the third control valve 18 are all manual butterfly valves.

[0025] The above technical features constitute the best embodiment of the present invention, which has strong adaptability and best implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.

Claims

1. An oilfield reservoir energy replenishment device, characterized in that It includes a skid-mounted base, a stirring device, a sand conveying device, a liquid adding device, a dry adding device, a suction device and a discharge device. The skid-mounted base is provided with a stirring device, a sand conveying device, a liquid adding device, a dry adding device, a suction device and a discharge device; the stirring device includes a stirring tank and a stirrer arranged in the stirring tank; the sand conveying device includes a sand bag and a first auger feeder, a feeding port is provided at the bottom of the sand bag, a first auger feeder is provided below the feeding port, and an outlet of the first auger feeder is connected to the stirring tank; the suction device includes a suction pipe, a suction pump, a first flow meter and a first control valve, the stirring tank is connected with a suction pipe, and the suction pipe is provided with a suction pump, a first flow meter and a first control valve; the discharge device includes a discharge pipe and a discharge pump, the bottom of the stirring tank is connected with a discharge pipe, and the discharge pipe is provided with a discharge pump; the stirring tank is connected with a liquid adding device and a dry adding device.

2. The oil field reservoir energy replenishment device according to claim 1, characterized in that The liquid adding device comprises a liquid adding pipeline, a cross-linking pump, a second flow meter and a second control valve. The stirring tank is connected with the liquid adding pipeline, and the liquid adding pipeline is provided with a cross-linking pump, a second flow meter and a second control valve.

3. The oil field reservoir energy replenishment device according to claim 2, characterized in that The dry adding device comprises an additive tank and a second auger conveyor, and the additive tank is connected with the stirring tank through the second auger conveyor.

4. The oilfield reservoir energy replenishment device according to claim 3, characterized in that It also includes a controller. A liquid level meter is arranged in the mixing tank. The suction pump, the cross-linking pump, the first auger feeder, the second auger feeder and the liquid level meter are all connected with the controller.

5. The oil field reservoir energy replenishment device according to claim 1, 3 or 4, characterized in that The suction pipeline includes a main pipeline and four branch pipelines connected to the main pipeline. The main pipeline is connected to the outlet and the mixing tank. The suction pump, the first flow meter and the first control valve are all arranged on the main pipeline. Each branch pipeline is provided with a third control valve, and the inlet end of each branch pipeline is provided with an oil valve.

6. The oil field reservoir energy replenishment device according to claim 2, characterized in that The suction pipeline includes a main pipeline and four branch pipelines connected to the main pipeline. The main pipeline is connected to the outlet and the mixing tank. The suction pump, the first flow meter and the first control valve are all arranged on the main pipeline. Each branch pipeline is provided with a third control valve, and the inlet end of each branch pipeline is provided with an oil valve.

7. The oil field reservoir energy replenishment device according to claim 6, characterized in that The first control valve, the second control valve and the third control valve are all manual butterfly valves.

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