CN212583676U

CN212583676U - Automatic control device for automatic recovery and working fluid level detection of oil well associated gas

Info

Publication number: CN212583676U
Application number: CN202021144068.4U
Authority: CN
Inventors: 辛月强; 田武刚; 段新海; 张丽; 张晓斌
Original assignee: Xi'an Liyuda Information Technology Service Co ltd
Current assignee: Xi'an Liyuda Information Technology Service Co ltd
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2021-02-23
Anticipated expiration: 2030-06-19

Abstract

The utility model discloses an automatic recovery of oil well associated gas and dynamic liquid level detection automatic control device, including oil well oil pipe, oil well oil pipe's internally mounted has a compression pump section of thick bamboo, the internally mounted of compression pump section of thick bamboo has purpose-built gas collection piston, the fuel rod is installed to the upper end of purpose-built gas collection piston, purpose-built sealing port is installed with purpose-built gas collection piston's junction to the fuel rod, one side intercommunication of compression pump section of thick bamboo has first gas pipeline, be equipped with the check valve on the first gas pipeline, the constant pressure valve, first gas pipeline is linked together with the gas collecting tank through the pipeline, first gas pipeline is connected with second gas pipeline through the pipeline, the other end and the oil well oil pipe of second gas pipeline are linked together, the one end of gas collecting tank is linked together with dynamic liquid level detection equipment through the pipeline, the other end of. The utility model discloses a compression pump can also provide the air supply to the working fluid level tester when can supply the sleeve pipe gas into the flow with oil well oil pipe gas pressurization back, carries out the working fluid level test.

Description

Automatic control device for automatic recovery and working fluid level detection of oil well associated gas

Technical Field

The utility model relates to an oil well oil recovery technical field, in particular to automatic recovery of oil well associated gas and working fluid level detect automatic control device.

Background

In the production process of an oil well, along with the gradual reduction of the flow pressure, dissolved gas in oil is separated out under the condition of lower than saturated pressure and enters an annular space between a casing and an oil pipe, and the annular space is also called casing gas. The back pressure formed by gathering the associated gas in the annular space can reduce the pump efficiency of an oil well pump and influence the oil extraction efficiency if the air is not exhausted and decompressed in time, and in addition, the associated gas gathered in each well field also needs to be pressurized and conveyed in a pressurizing station.

In China, low-permeability oil fields generally have high dissolved gas-oil ratio and rich associated gas resources, but the recovery difficulty is high due to the fact that the oil well yield of a single well site is low, the gas quantity is small, and meanwhile, the recovery difficulty is high due to the influences of factors such as block dispersion, large terrain height difference and large gas quantity difference. Associated gas which cannot be recovered on site has to be set off by a torch in a well/station yard, thereby not only wasting a large amount of valuable resources, but also having great influence on the environment.

According to the field survey of a certain large oil field in China in 2017, the total associated gas quantity of the oil field in one year is estimated to be more than 10 hundred million (estimated according to the gas-oil ratio of 40), and although the associated gas recovery is greatly improved in recent years, the associated gas recovery has a large promotion space under the restriction of technologies and relevant policies. Therefore, further improving the recovery efficiency of the associated gas, especially under the constraint of cost, how to recover the associated gas economically and effectively to the maximum extent, has important significance for improving the oil field development benefit under the condition of low oil price.

The working fluid level of an oil well is one of the indispensable main data in the production management of the oil field, is an important index reflecting the liquid supply capacity of a stratum, is the main basis for determining the reasonable submergence degree of an oil extraction pump and formulating reasonable and scientific oil well exploitation parameters, and is called as the pulse of the oil well. With the continuous progress of scientific technology and the influence of intelligent process of oil field construction, the management of oil fields becomes more complex, and the real-time online monitoring of the working fluid level of an oil well is realized by using advanced information technology means as support to realize the digital and fine management of the oil fields. And determining reasonable submergence for the oil field and making reasonable work system. Determining the pump depth and calculating the bottom hole flowing pressure by analyzing the working fluid level; and judging the matching condition of the working system of the oil well and the stratum energy according to the working fluid level change.

Therefore, an automatic control device for automatic recovery and working fluid level detection of oil-well associated gas is provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides an automatic recovery of oil well associated gas and working solution level detect automatic control device, can effectively solve the problem in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an automatic recovery of oil well associated gas and dynamic liquid level detection automatic control device, the pipeline on be equipped with first manual valve, just first trachea line is connected with second trachea line through the pipeline, the other end and the oil well oil pipe of second trachea line are linked together, be equipped with union and first goat's horn valve on the pipeline between first trachea line, the second trachea line, be equipped with the manual valve of second on the second trachea line, there is second pressure transmitter through the pipe mounting on the second trachea line, just the one end of gas collecting tank is linked together through pipeline and dynamic liquid level detection equipment, the other end of dynamic liquid level detection equipment is linked together through collection oil pipe and oil well oil pipe, be equipped with second goat's horn valve on the collection oil pipe.

Preferably, the first air pipeline and the check valve form an air inlet flow path, and the air inlet flow path is arranged between the outlet of the sleeve and the compression pump barrel.

Preferably, the second gas line and the constant pressure valve form a sleeve gas safety circuit.

Preferably, the first gas pipeline, the one-way valve and the constant pressure valve form an exhaust flow path.

Preferably, the gas collecting tank and the working fluid level detection device form a fluid level testing device.

Preferably, the oil collecting pipe and the second claw valve form an oil collecting flow path.

Compared with the prior art, the utility model discloses following beneficial effect has: the automatic control device for automatic recovery of oil well associated gas and detection of working fluid level is characterized in that during use, during down stroke, a special gas collecting piston oil rod is driven by the oil rod to descend, a one-way valve oil rod in an air inlet flow is opened, a constant pressure valve oil rod in an exhaust flow is closed, sleeve gas enters a compression pump cylinder oil rod, during up stroke, oil flows out of an oil outlet floral tube to enter an oil collecting flow, the one-way valve oil rod in the air inlet flow is closed, the constant pressure valve oil rod in the exhaust flow is opened, gas pressure in the compression pump cylinder oil rod is increased, the sleeve gas enters the oil collecting flow along the exhaust flow, during liquid level test, during up stroke exhaust process, gas enters the gas collecting tank oil rod, the pressure of the gas collecting tank oil rod is set through the constant pressure valve oil rod arranged on the exhaust flow, a gas source is provided for the oil rod of a working fluid level detection device, and a sleeve gas safety loop is formed, when the freezing and blocking condition occurs in the exhaust flow, the gas pressure is increased in the upper stroke, the constant pressure valve oil rod in the loop is opened, the sleeve gas returns to the oil pipe oil rod oil of the oil well again, and after the oil pipe gas of the oil well is pressurized by the compression pump, the sleeve gas can be supplied to the flow and simultaneously can be provided for the working fluid level tester to perform the working fluid level test.

Drawings

Fig. 1 is the overall structure schematic diagram of the automatic recovery and dynamic liquid level detection automatic control device for oil well associated gas of the utility model.

In the figure: 1. a first pressure transmitter; 2. a first manual valve; 3. a gas collection tank; 4. an electromagnetic ball valve; 5. a constant pressure valve; 6. a second pressure transmitter; 7. a union; 8. a second manual valve; 9. a first claw valve; 10. a sucker rod; 11. packing of the oil well mouth; 12. compressing the pump barrel; 13. an oil well tubing; 14. a working fluid level detection device; 15. specially manufacturing a wellhead casing flange; 16. specially-made gas collecting piston; 17. a second claw valve; 18. specially manufacturing a sealing opening; 19. a first gas line; 20. a one-way valve; 21. a second gas line; 22. an oil collecting pipe.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1, an automatic control device for automatic recovery and dynamic liquid level detection of associated gas in an oil well comprises an oil well pipe 13, wherein a specially-made wellhead casing flange 15 is arranged on the oil well pipe 13, a compression pump barrel 12 is arranged inside the oil well pipe 13, a specially-made gas collection piston 16 is arranged inside the compression pump barrel 12, an oil rod 10 is arranged at the upper end of the specially-made gas collection piston 16, a specially-made sealing opening 18 is arranged at the joint of the oil rod 10 and the specially-made gas collection piston 16, the upper end of the oil rod 10 extends to the outer side of the compression pump barrel 12, an oil well wellhead packing 11 is arranged on the compression pump barrel 12, one side of the compression pump barrel 12 is communicated with a first gas pipeline 19, a one-way valve 20 and a constant pressure valve 5 are arranged on the first gas pipeline 19, the first gas pipeline 19 is communicated with a gas collection tank 3 through a pipeline, an electromagnetic ball valve 4 is arranged on the pipeline between the, one side of gas collecting tank 3 is linked together through pipeline and first pressure transmitter 1, be equipped with first manual valve 2 on the pipeline between gas collecting tank 3 and the first pressure transmitter 1, just first gas line 19 is connected with second gas line 21 through the pipeline, the other end and the oil well oil pipe 13 of second gas line 21 are linked together, be equipped with union 7 and first goat's horn valve 9 on the pipeline between first gas line 19, the second gas line 21, be equipped with the manual valve 8 of second on the second gas line 21, there is second pressure transmitter 6 through the pipe mounting on the second gas line 21, just the one end of gas collecting tank 3 is linked together through pipeline and liquid level detection equipment 14, the other end of liquid level detection equipment 14 is linked together through oil collecting pipe 22 and oil well oil pipe 13, be equipped with second goat's horn valve 17 on the oil collecting pipe 22.

In this embodiment, it is preferable that the first air line 19 and the check valve 20 constitute an air intake flow path, and the air intake flow path is provided between the outlet of the sleeve and the compression pump cylinder 12.

In this embodiment, the second gas line 21 and the constant pressure valve 5 preferably form a sleeve gas safety circuit.

In this embodiment, preferably, the first gas line 19, the check valve 20, and the constant pressure valve 5 constitute an exhaust flow path.

In this embodiment, preferably, the gas collection tank 3 and the working fluid level detection device 14 constitute a fluid level testing device.

In this embodiment, preferably, the oil collecting pipe 22 and the second claw valve 17 constitute an oil collecting flow path.

It should be noted that, the utility model relates to an automatic control device for automatic recovery and working fluid level detection of oil well associated gas, when in use, during the down stroke, the oil rod 10 drives the purpose-made gas collection piston 16 to move downwards, the check valve 20 in the air inlet flow is opened, the constant pressure valve 5 in the exhaust flow is closed, the sleeve gas enters the compression pump barrel 12, during the up stroke, the oil flow flows out from the oil outlet perforated pipe to enter the oil collection flow, the check valve 20 in the air inlet flow is closed, the constant pressure valve 5 in the exhaust flow is opened, the gas pressure in the compression pump barrel 12 is increased, the sleeve gas enters the oil collection flow along the exhaust flow, during the exhaust process of the up stroke, the gas enters the gas collection tank 3, the pressure in the gas collection tank 3 is set through the constant pressure valve 5 installed on the exhaust flow, the gas source is provided for the working fluid level detection device 14, the sleeve gas safety loop, when the freezing blockage occurs in, the gas pressure increases in the upstroke, the constant pressure valve 5 in the loop is opened, the casing gas returns to the oil well oil pipe 13 again, and after the oil well oil pipe 13 gas is pressurized by the compression pump, the casing gas can be supplied to the flow path and can also be provided for the working fluid level tester to perform the working fluid level test.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an automatic recovery of oil well associated gas and working fluid level detect automatic control device, includes oil well oil pipe (13), its characterized in that, be equipped with purpose-built well head casing flange (15) on oil well oil pipe (13), the internally mounted of oil well oil pipe (13) has a compression pump section of thick bamboo (12), the internally mounted of compression pump section of thick bamboo (12) has purpose-built gas collecting piston (16), oil pole (10) are installed to the upper end of purpose-built gas collecting piston (16), purpose-built sealing port (18) are installed with the junction of purpose-built gas collecting piston (16) in oil pole (10), just the upper end of oil pole (10) extends to the outside of compression pump section of thick bamboo (12), be equipped with oil well head packing (11) on compression pump section of thick bamboo (12), one side intercommunication of compression pump section of thick bamboo (12) has first gas pipeline (19), be equipped with check valve (20) on first gas pipeline (19, A constant pressure valve (5), the first gas pipeline (19) is communicated with the gas collecting tank (3) through a pipeline, an electromagnetic ball valve (4) is arranged on the pipeline between the first gas pipeline (19) and the gas collecting tank (3), one side of the gas collecting tank (3) is communicated with the first pressure transmitter (1) through a pipeline, a first manual valve (2) is arranged on the pipeline between the gas collecting tank (3) and the first pressure transmitter (1), the first gas pipeline (19) is connected with the second gas pipeline (21) through a pipeline, the other end of the second gas pipeline (21) is communicated with the oil well oil pipe (13), an oil union (7) and a first claw valve (9) are arranged on the pipeline between the first gas pipeline (19) and the second gas pipeline (21), a second manual valve (8) is arranged on the second gas pipeline (21), and a second pressure transmitter (6) is arranged on the second gas pipeline (21) through a pipeline, and one end of the gas collection tank (3) is communicated with a working fluid level detection device (14) through a pipeline, the other end of the working fluid level detection device (14) is communicated with an oil well oil pipe (13) through an oil collection pipe (22), and a second claw valve (17) is arranged on the oil collection pipe (22).

2. The automatic control device for automatic recovery and working fluid level detection of oil well associated gas according to claim 1, characterized in that: the first air pipeline (19) and the one-way valve (20) form an air inlet flow, and the air inlet flow is arranged between the outlet of the sleeve and the compression pump cylinder (12).

3. The automatic control device for automatic recovery and working fluid level detection of oil well associated gas according to claim 1, characterized in that: the second air pipeline (21) and the constant pressure valve (5) form a sleeve air safety loop.

4. The automatic control device for automatic recovery and working fluid level detection of oil well associated gas according to claim 1, characterized in that: the first gas pipeline (19), the one-way valve (20) and the constant pressure valve (5) form an exhaust flow.

5. The automatic control device for automatic recovery and working fluid level detection of oil well associated gas according to claim 1, characterized in that: the gas collection tank (3) and the working fluid level detection device (14) form a liquid level testing device.

6. The automatic control device for automatic recovery and working fluid level detection of oil well associated gas according to claim 1, characterized in that: the oil collecting pipe (22) and the second claw valve (17) form an oil collecting flow path.