CN212656807U

CN212656807U - Gas well pumping drainage technology

Info

Publication number: CN212656807U
Application number: CN202021150764.6U
Authority: CN
Inventors: 张焱
Original assignee: Chengdu Houxinjian Technology Co ltd
Current assignee: Chengdu Houxinjian Technology Co ltd
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2021-03-05
Anticipated expiration: 2030-06-19

Abstract

A gas well pumping, discharging and extracting process technology comprises a pumping device 1, a steel rope 2, a guide device 3, a wellhead dynamic sealing device 4, a steel rope emergency shearing device 5, a wellhead static sealing device 6, a wellhead extension pipe 7, a gas production tree 8, a sleeve 9, an oil pipe 10, a steel rope connector 11, a safety joint 12, a pump sealing sleeve 13, a pump sealing seat 14, a gas-liquid separator 15 and a plug 16, wherein the steel rope connector 11, the safety joint 12, the pump sealing sleeve 13 and the pump sealing seat 14 are sequentially connected to form a downhole pumping plunger, the outer diameter of the downhole pumping plunger is close to the inner diameter of the oil pipe 9, the pumping plunger can move up and down in the oil pipe in a full stroke under the driving of the ground pumping device 1, the gas-liquid separator 15 separates gas-liquid mixture entering the oil pipe, and most of gas is discharged from an annulus, the liquid is gradually pumped and discharged out of the shaft by the pumping plunger in the oil pipe, so that the non-pumping and discharging production of the gas well is realized.

Description

Gas well pumping drainage technology

Technical Field

The utility model relates to a technology for gas well relies on external force to force row to adopt belongs to oil and gas production machinery.

Background

The gas well drainage and production process technologies include various technologies, such as foam drainage and gas production process technologies, plunger gas lift technologies, compressor gas lift technologies and the like, the technologies are used for reducing the density of liquid in a shaft or assisting gas in the shaft to carry the liquid in a chemical or physical mode, but the technologies always depend on the capacity of a production zone, and the technologies are ineffective once the capacity is insufficient. The technical problem of how to forcibly discharge and produce gas and liquid in a shaft by using external force is solved, a screw pump and an electric submersible pump are technological measures for forcibly discharging and producing by using the external force, but the screw pump and the electric submersible pump are basically eliminated on site due to the reasons of unstable well depth, unstable water outlet of a producing zone and the like, pumping is carried out by using a pumping unit, the biggest problem is how to solve the problems of gas lock of an oil well pump and dynamic seal of a well mouth, pumping and discharging and producing by using pumping equipment are only adopted when fracturing liquid is forcibly discharged at the initial production stage of a gas well, and are hardly adopted at the normal production stage of the gas well because of incomplete technological matching, long-time continuous work cannot be carried out, and once the producing zone of the gas well is abnormal, the well mouth is difficult to control.

Disclosure of Invention

An object of the utility model is to provide a gas well suction row adopts technology that relies on external force to arrange gas-liquid in the gas production well.

The utility model discloses a realize like this, by suction apparatus 1, the steel cable 2, guider (3), well head dynamic seal device (4), urgent cutting device of steel cable (5), well head static seal device (6), well head extension pipe (7), gas production tree 8, sleeve pipe 9, oil pipe 10, steel cable connector (11), safety joint (12), pump seal cover (13), pump seal seat (14), vapour and liquid separator (15), end cap (16) are constituteed, guider (3), well head dynamic seal device (4), urgent cutting device of steel cable (5), well head static seal device (6) and well head extension pipe (7) connect gradually the back, the top of reconnection to gas production tree 8, steel cable connector (11), safety joint (12), pump seal cover (13) and pump seal seat (14) connect gradually and constitute the pumping plunger in the pit.

The utility model has the advantages that the guiding device (3) is used for ensuring that the steel rope 2 is placed in the middle of the oil pipe, the well mouth dynamic sealing device (4) is used for sealing the well mouth in the process of the up-and-down operation of the steel rope 2 and preventing gas-liquid leakage, the steel rope emergency shearing device (5) is used for sealing the abnormal condition under the well, the well mouth is difficult to seal, the gas production tree needs to be closed with the valve No. 1 or No. 2 to close the well, the steel rope 2 is quickly sheared off, the safety joint (12) is used for being pulled off by ground pumping equipment once the pumping plunger is blocked, the steel rope 2 is taken out, the outer diameter of the pumping plunger is close to the inner diameter of the oil pipe 9, the pumping plunger can do full-stroke up-and-down movement in the oil pipe under the driving of the ground pumping equipment 1, the gas-liquid separator (15) separates gas-liquid mixed liquid entering the oil pipe, most of gas is discharged from the annular, and the gas well is pumped and drained without a pump.

Drawings

Fig. 1 is a general structural diagram of a gas well pumping drainage production process, fig. 2 is a structural diagram of a surface device near a wellhead, and fig. 3 is a structural diagram of a downhole tool. The present invention will be further explained with reference to the drawings and examples.

Detailed Description

As shown in figures 1, 2 and 3, the gas well pumping drainage production process technology comprises a pumping device 1, a steel rope 2, a guide device (3), a well mouth dynamic seal device (4), a steel rope emergency shearing device (5), a well mouth static seal device (6), a well mouth extension pipe (7), a gas production tree 8, a casing pipe 9, an oil pipe 10, a steel rope connector (11), a safety joint (12), a pump seal sleeve (13), a pump seal seat (14), a gas-liquid separator (15) and a plug (16), wherein after the guide device (3), the well mouth dynamic seal device (4), the steel rope emergency shearing device (5), the well mouth static seal device (6) and the well mouth extension pipe (7) are sequentially connected, and then the steel wire connector (11), the safety joint (12), the swab sealing sleeve (13) and the swab sealing seat (14) are sequentially connected to form the underground pumping plunger piston. The guiding device (3) is used for ensuring that the steel rope 2 is centered in the oil pipe, the wellhead dynamic sealing device (4) is used for sealing a wellhead in the process that the steel rope 2 runs up and down to prevent gas-liquid leakage, the steel rope emergency shearing device (5) is used for sealing the wellhead under the condition that abnormal conditions occur underground, the wellhead is difficult to seal, and a gas production tree needs to be closed emergently by a No. 1 valve or a No. 2 valve, the device for rapidly shearing the steel rope 2 has the advantages that the length of a wellhead lengthening pipe (7) is greater than that of a suction plunger, can ensure the safety of well head when pumping plunger goes into the well like this, the effect of safety joint (12) is once can be broken by ground suction apparatus when pumping plunger is blocked, plays out steel cable 2, and the external diameter of pumping plunger is close with oil pipe 9 internal diameter, and pumping plunger can be full stroke up-and-down motion in oil pipe under the drive of ground suction apparatus 1, and gas-liquid separator (15) carry out separation in the pit with the gas-liquid mixture that gets into oil pipe.

Claims

1. A gas well pumping drainage technology is characterized in that: the underground pumping plunger consists of pumping equipment 1, a steel rope 2, a guide device 3, a wellhead dynamic sealing device 4, a steel rope emergency shearing device 5, a wellhead static sealing device 6, a wellhead lengthened pipe 7, a gas production tree 8, a sleeve 9, an oil pipe 10, a steel rope connector 11, a safety joint 12, a pump sealing sleeve 13, a pump sealing seat 14, a gas-liquid separator 15 and a plug 16, wherein the guide device 3, the wellhead dynamic sealing device 4, the steel rope emergency shearing device 5, the wellhead static sealing device 6 and the wellhead lengthened pipe 7 are sequentially connected and then connected to the top of the gas production tree 8, and the steel rope connector 11, the safety joint 12, the pump sealing sleeve 13 and the pump sealing seat 14 are sequentially connected to form the underground pumping plunger.

2. The gas well pumping drainage and production technology of claim 1, which is characterized in that: the length of the well head lengthening pipe (7) is larger than that of the suction plunger.