CN110847862A - Drainage gas production device and drainage gas production method - Google Patents
Drainage gas production device and drainage gas production method Download PDFInfo
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- CN110847862A CN110847862A CN201810957524.8A CN201810957524A CN110847862A CN 110847862 A CN110847862 A CN 110847862A CN 201810957524 A CN201810957524 A CN 201810957524A CN 110847862 A CN110847862 A CN 110847862A
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- gas
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/128—Adaptation of pump systems with down-hole electric drives
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/34—Arrangements for separating materials produced by the well
- E21B43/38—Arrangements for separating materials produced by the well in the well
- E21B43/385—Arrangements for separating materials produced by the well in the well by reinjecting the separated materials into an earth formation in the same well
Abstract
The invention discloses a water drainage gas production device and a water drainage gas production method, and belongs to the field of oil and gas equipment. The drainage gas production device comprises: the gas-liquid separation assembly and the pipeline assembly are arranged on the pipe column; the gas-liquid separation assembly comprises a power component, a gas-liquid separator, a gas-liquid inlet, a gas outlet and a liquid outlet, wherein the gas-liquid inlet, the gas outlet and the liquid outlet are arranged on the gas-liquid separator; the conduit assembly includes a gas conduit and a liquid conduit, one end of the liquid conduit being connected to the liquid outlet and the other end being configured to communicate with other formations other than the gas outlet, the gas conduit communicating with the gas outlet. The problem of drainage gas production operation step loaded down with trivial details among the correlation technique is solved, the effect of improving drainage gas production efficiency has been reached. Meanwhile, underground liquid does not need to be pumped out of the ground for treatment, so that the cost is saved, the pollution to the environment is avoided, and the yield of the oil well with the same layer of the water injection layer is improved.
Description
Technical Field
The invention relates to the field of oil and gas equipment, in particular to a drainage gas production device and a drainage gas production method.
Background
The production of gas wells typically involves the delivery of gas from a gas production formation within the gas well to the surface through a string, but formation water (or other liquid) may intrude into the gas production formation in significant amounts, resulting in the mixing of gas and liquid in the gas production formation to form a gas-liquid mixture, which in turn makes it difficult for the gas to be delivered to the surface through the string.
One method of drainage gas production in the related art is to inject high-pressure gas into a gas well through a high-pressure gas source, lift liquid in a gas outlet layer out of the gas well through the high-pressure gas, and then convey the gas in the gas outlet layer to the ground.
In the process of implementing the invention, the inventor finds that the related art has at least the following problems: the above-mentioned mode of just carrying out gas production operation after discharging formation water to ground earlier, the step is loaded down with trivial details, and it is longer to consume time.
Disclosure of Invention
The embodiment of the invention provides a drainage gas production device and a drainage gas production method, which can solve the problems of complicated drainage gas production operation steps and long time consumption in the related technology. The technical scheme is as follows:
according to a first aspect of the present invention, there is provided a drainage gas recovery device comprising:
the gas-liquid separation assembly comprises a pipe column, and a gas-liquid separation assembly and a pipeline assembly which are arranged on the pipe column;
the gas-liquid separation assembly comprises a power component, a gas-liquid separator, and a gas-liquid inlet, a gas outlet and a liquid outlet which are arranged on the gas-liquid separator, wherein the power component is connected with the gas-liquid separator and is configured to suck a gas-liquid mixture into the gas-liquid separator from the gas-liquid inlet, and the gas-liquid separator is configured to discharge gas in the gas-liquid mixture from the gas outlet and discharge liquid in the gas-liquid mixture from the liquid outlet;
the conduit assembly includes a gas conduit and a liquid conduit, one end of the liquid conduit is connected with the liquid outlet and the other end is configured to communicate with other formations except the gas outlet, the gas conduit communicates with the gas outlet.
Optionally, the water drainage and gas production device further comprises a packer arranged on the pipe column,
the packer is disposed between the gas outlet formation and the other formation when the other formation is below the gas outlet formation.
Optionally, the drainage gas production device further comprises two packers arranged on the pipe column,
when the other stratum is positioned above the gas outlet layer, the two packers are respectively arranged on two sides of the other stratum in a first direction, and the first direction is the length direction of the pipe column.
Optionally, the power unit comprises a motor and an electric submersible pump connected together.
Optionally, the power component further comprises a cable, and the cable is connected with the motor.
Optionally, the drainage gas production device further comprises a check valve, and the check valve is arranged in the liquid pipeline.
Optionally, the pipe string comprises a gas conveying section, and the gas conveying section is reused as the gas pipeline.
Optionally, the water drainage and gas production device further comprises a sieve tube, the sieve tube is arranged in the gas delivery section, at least one opening is arranged on the sieve tube, and the opening is communicated with the inside of the gas delivery section.
Optionally, the liquid conduit is disposed in the tubular string, the tubular string is provided with an opening, the opening is configured to communicate with the other formation, and the other end of the liquid conduit is connected with the opening.
According to a second aspect of the present invention, there is provided a method of water drainage and gas production, the method comprising:
separating the gas-liquid mixture in the gas outlet layer into gas and liquid through the gas-liquid separation assembly;
transporting the gas through a gas pipeline;
and delivering the liquid into other formations except the gas outlet layer through a liquid pipeline.
The technical scheme provided by the embodiment of the invention has the beneficial effects that at least:
the gas-liquid mixture is sucked from the gas-liquid inlet of the gas-liquid separator through the power component, the gas-liquid separator separates the gas-liquid mixture, the gas is discharged from the gas outlet, and the liquid is discharged from the liquid outlet. The liquid pipeline conveys the liquid to other stratums except the gas outlet layer, and the gas pipeline guides out the gas, so that the gas can be collected without pumping out the liquid in the gas outlet layer. The problems of complex drainage and gas production operation steps and long time consumption in the related technology are solved, and the effects of simplifying the drainage and gas production steps and improving the drainage and gas production efficiency are achieved. Meanwhile, underground liquid does not need to be pumped out of the ground for treatment, so that the cost is saved, the pollution to the environment is avoided, and the yield of the oil well with the same layer of the water injection layer is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a drainage gas recovery device of the prior art;
FIG. 2 is a schematic structural diagram of a water drainage and gas production device according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of another water drainage and gas production device according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of another water drainage and gas production device according to an embodiment of the present invention;
fig. 5 is a flowchart of a water drainage and gas production method according to an embodiment of the present invention.
In the various figures described above, the reference numerals may have the meaning: 1-gas production zone, 2-other stratum, 3-casing, 10-water drainage and gas production device, 11-tubular column, 12-pipeline assembly, 121-gas pipeline, 122-liquid pipeline, k 1-gas-liquid inlet, k 2-gas outlet, k 3-liquid outlet, k 4-open hole, 13-gas-liquid separation assembly, 131-power part, 1311-motor, 1312-electric submersible pump, 1313-cable, 132-gas-liquid separator, 14-packer, 15-check valve, 16-screen pipe and f-first direction.
With the above figures, certain embodiments of the invention have been illustrated and described in more detail below. The drawings and the description are not intended to limit the scope of the inventive concept in any way, but rather to illustrate it by those skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
At present, in the process of exploiting a gas well, formation water (or other liquid) may invade into a gas producing formation in large quantity, so that gas in the gas producing formation and liquid are mixed to form a gas-liquid mixture, and then oil pipe accumulated liquid or even water flooding in a pipe column is caused, so that the exploitation efficiency of the gas well is affected, and meanwhile, the gas is difficult to be conveyed to the ground through the pipe column. This problem is particularly acute after the well has been produced in the mid-to late stages.
The structure of a gas well, which may include a gas production zone 1 and other formations, is shown in fig. 1. The gas well is also provided with a casing 3, which casing 3 may be provided with perforations (not shown in fig. 1) at locations where it contacts the various formations (e.g., gas and water injection layers, etc.). Liquid in other formations may invade into the gas outlet layer 1 and mix with the gas in the gas outlet layer 1 into a gas-liquid mixture, thereby making it difficult to directly extract the gas in the gas outlet layer from the gas well.
In the related art, when gas in the gas outlet layer 1 of the gas well is collected, high-pressure gas is firstly injected into the gas well through a high-pressure gas source, so that liquid in the gas outlet layer 1 is lifted out of the gas well through the high-pressure gas, and then the gas in the gas outlet layer 1 is conveyed to the ground.
In the process of implementing the invention, the inventor finds that the related art has at least the following problems: the drainage gas production method comprises the steps of firstly discharging the formation water to the ground, and then carrying out gas production operation, the steps are complicated, the time consumption is long, the accumulated liquid at the bottom of the well is discharged out of the ground, the treatment cost of the accumulated liquid in the oil pipe is increased, and the environmental pollution is possibly caused.
The embodiment of the invention provides a drainage gas production device and a drainage gas production method, which can solve the problems in the related art.
Fig. 2 is a schematic structural diagram of a drainage gas recovery device according to an embodiment of the present invention, where the drainage gas recovery device 10 may include:
a pipe column 11, and a gas-liquid separation assembly 13 and a pipe assembly 12 which are arranged on the pipe column.
The gas-liquid separation assembly 13 includes a power unit 131, a gas-liquid separator 132, and a gas-liquid inlet k1, a gas outlet k2, and a liquid outlet k3 provided on the gas-liquid separator 132, the power unit 131 is connected to the gas-liquid separator 132 and configured to suck the gas-liquid mixture into the gas-liquid separator 132 from the gas-liquid inlet k1, and the gas-liquid separator 132 is configured to discharge the gas in the gas-liquid mixture from the gas outlet k2 and discharge the liquid in the gas-liquid mixture from the liquid outlet k 3.
The pipe assembly 12 includes a gas pipe 121 and a liquid pipe 122, one end of the liquid pipe 122 is connected to the liquid outlet k3, the other end is configured to communicate with other earth strata (not shown in fig. 2) except for the gas outlet, and the gas pipe 121 communicates with the gas outlet k 2.
In summary, in the drainage gas recovery device according to the embodiment of the present invention, the power unit sucks the gas-liquid mixture from the gas-liquid inlet of the gas-liquid separator, the gas-liquid separator separates the gas-liquid mixture, discharges the gas from the gas outlet, and discharges the liquid from the liquid outlet. The liquid pipeline conveys the liquid to other stratums except the gas outlet layer, and the gas pipeline guides out the gas, so that the gas can be collected without pumping out the liquid in the gas outlet layer. The problems of complex drainage and gas production operation steps and long time consumption in the related technology are solved, and the effects of simplifying the drainage and gas production steps and improving the drainage and gas production efficiency are achieved. Meanwhile, underground liquid does not need to be pumped out of the ground for treatment, so that the cost is saved, the pollution to the environment is avoided, and the yield of the oil well with the same layer of the water injection layer is improved.
The structure of the drainage gas production device provided by the embodiment of the present invention may be different depending on the positional relationship between the other formation for draining the liquid (this layer may be referred to as a water injection layer) and the gas outlet layer. The following description will be made separately.
When the water injection layer is located above the gas outlet layer, please refer to fig. 3, which shows a schematic structural diagram of another drainage gas recovery device provided by the embodiment of the present invention, and the drainage gas recovery device 10 is adjusted on the basis of the drainage gas recovery device shown in fig. 2.
Wherein, the gas-liquid mixture in the gas outlet layer 1 can enter the gas-liquid separator 132 from a gas-liquid inlet (not shown in fig. 3) under the driving of the power component, the gas-liquid separator 132 discharges the liquid obtained by separating the gas-liquid mixture into the liquid pipeline 122 from a liquid outlet, and the liquid pipeline 122 can convey the liquid to other ground layers 2. The gas-liquid separator 132 discharges the gas obtained by separating the gas-liquid mixture from the gas outlet into the gas pipe 121, and the gas pipe 121 can transport the gas to the ground.
Optionally, the drainage and gas production device 10 further includes two packers (the packer 141 and the packer 142) disposed on the string 11, and the two packers (the packer 141 and the packer 142) are respectively disposed on two sides of the other formation (the water injection layer) 2 in the first direction f. The first direction f is the longitudinal direction of the column 11. The two packers can form a closed space to prevent separated liquid from mixing with gas again.
Optionally, power unit 13 includes a motor 1311 and an electric submersible pump 1312 coupled thereto. Optionally, the power component further comprises a cable 1313, and the cable 1313 is connected with the motor 1311. The electrical submersible pump 1312 may be an electric submersible centrifugal pump, which has the advantages of simple equipment structure, high efficiency, high degree of automation, and the like. The motor and the electric submersible pump are connected with each other through a shaft, a cable 1313 penetrates through the packer to transmit power on the ground to the motor 1311, the motor 1311 drives the shaft to rotate, and the rotating shaft can drive the electric submersible pump 1312 to operate.
Optionally, the drainage gas production device 10 further comprises a check valve 15, and the check valve 15 is disposed in the liquid pipeline 122. The check valve 15 is also called a check valve, a check valve or a check valve, and may include an inlet and an outlet, and fluid such as liquid can only flow in from the inlet, and can only flow out from the outlet, but can not flow in from the outlet. The check valve 15 may be used to allow one-way flow of liquid down the liquid conduit 122 into the other formation 2, preventing liquid from re-flowing into the gas-liquid separator 132.
Optionally, the tubing string 11 includes a gas delivery section that is multiplexed into the gas conduit 121. I.e. gas can be delivered directly through the cavity inside the pipe string 11.
Optionally, the water and gas production apparatus 10 further comprises a screen 16, and the screen 16 is disposed at the gas delivery section. The screen 16 is provided with at least one opening which communicates with the interior of the gas delivery section. In the embodiment of the present invention, the gas-liquid separator 132 discharges the gas in the gas-liquid mixture from the gas outlet into the annular space formed between the tubular string 11 and the casing 3, and the gas in the annular space can enter the gas pipeline 121 through the openings on the screen 16.
Optionally, the fluid conduit 122 is disposed in the tubing string 11, and the tubing string 11 is provided with an opening k4, the opening k4 being configured to communicate with other formations 2. One end of the liquid pipe 122 is connected to a liquid outlet (not shown in fig. 3), and the other end is connected to the opening k 4. The separated liquid from the gas-liquid separator 132 enters the liquid conduit 122 through the liquid outlet and flows into the other formation 2 through the opening k4 in the liquid conduit 122.
In summary, in the drainage gas recovery device according to the embodiment of the present invention, the power unit sucks the gas-liquid mixture from the gas-liquid inlet of the gas-liquid separator, the gas-liquid separator separates the gas-liquid mixture, discharges the gas from the gas outlet, and discharges the liquid from the liquid outlet. The liquid pipeline conveys the liquid to other stratums except the gas outlet layer, and the gas pipeline guides out the gas, so that the gas can be collected without pumping out the liquid in the gas outlet layer. The problems of complex drainage and gas production operation steps and long time consumption in the related technology are solved, and the effects of simplifying the drainage and gas production steps and improving the drainage and gas production efficiency are achieved. Meanwhile, underground liquid does not need to be pumped out of the ground for treatment, so that the cost is saved, the pollution to the environment is avoided, and the yield of the oil well with the same layer of the water injection layer is improved.
When the water injection layer is located below the gas outlet layer, please refer to fig. 4, which shows a schematic structural diagram of another drainage gas recovery device provided by the embodiment of the present invention, and the drainage gas recovery device 10 is adjusted on the basis of the drainage gas recovery device shown in fig. 3.
Wherein, the gas-liquid mixture in the gas outlet layer 1 can enter the gas-liquid separator 132 from a gas-liquid inlet (not shown in fig. 3) under the driving of the power component, the gas-liquid separator 132 directly discharges the liquid obtained by separating the gas-liquid mixture into the other ground layer 2 below, the gas-liquid separator 132 discharges the gas obtained by separating the gas-liquid mixture into the gas pipeline 121 from a gas outlet, and the gas pipeline 121 can convey the gas to the ground.
Optionally, the drainage and gas production device 10 further comprises a packer 14 arranged on the pipe string 11, and the packer 14 is arranged between the gas outlet layer 1 and the other stratum 2. The drainage and gas production unit 10 is now provided with a divider 14 to form a closed space to prevent liquid from leaking to other areas while ensuring that liquid can be injected into other formations 2.
Optionally, the power components include a motor 1311 and an electric submersible pump 1312 coupled thereto. Optionally, the power component further comprises a cable 1313, and the cable 1313 is connected with the motor 1311. The electric submersible pump 1312, i.e., the electric submersible centrifugal pump, has the advantages of simple equipment structure, high efficiency, high degree of automation, and the like. The motor and the electric submersible pump are connected with each other through a shaft, a cable 1313 penetrates through the packer to transmit power on the ground to the motor 1311, the motor 1311 drives the shaft to rotate, and the rotating shaft drives the electric submersible pump 1312 to operate.
Optionally, the drainage gas production device 10 further comprises a check valve 15, and the check valve 15 is disposed in the liquid pipeline 122. The check valve 15 is also called a check valve, a check valve or a check valve, and may include an inlet and an outlet, and fluid such as liquid can only flow in from the inlet, and can only flow out from the outlet, but can not flow in from the outlet. The check valve 15 may be used to allow one-way flow of liquid down the liquid conduit 122 into the other formation 2, preventing liquid from returning to the gas-liquid mixture.
Optionally, the tubing string 11 includes a gas delivery section that is multiplexed into the gas conduit 121. I.e. gas can be delivered directly through the cavity inside the pipe string 11.
Optionally, the water and gas production apparatus 10 further comprises a screen 16, the screen 16 is disposed on the gas delivery section, and at least one opening is disposed on the screen 16 and is communicated with the inside of the gas delivery section. In the embodiment of the present invention, the gas-liquid separator 132 discharges the gas in the gas-liquid mixture from the gas outlet into the annular space formed between the tubular string 11 and the casing 3, and the gas in the annular space can enter the gas pipeline 121 through the openings on the screen 16.
In summary, in the drainage gas recovery device according to the embodiment of the present invention, the power unit sucks the gas-liquid mixture from the gas-liquid inlet of the gas-liquid separator, the gas-liquid separator separates the gas-liquid mixture, discharges the gas from the gas outlet, and discharges the liquid from the liquid outlet. The liquid pipeline conveys the liquid to other stratums except the gas outlet layer, and the gas pipeline guides out the gas, so that the gas can be collected without pumping out the liquid in the gas outlet layer. The problems of complex drainage and gas production operation steps and long time consumption in the related technology are solved, and the effects of simplifying the drainage and gas production steps and improving the drainage and gas production efficiency are achieved. Meanwhile, underground liquid does not need to be pumped out of the ground for treatment, so that the cost is saved, the pollution to the environment is avoided, and the yield of the oil well with the same layer of the water injection layer is improved.
Fig. 5 is a flow chart of a water drainage gas production method according to an embodiment of the present invention, which may be applied to any of the water drainage gas production apparatuses shown in fig. 2, fig. 3, or fig. 4. The method may include the following steps:
in step 501, a gas-liquid mixture in a gas exit layer is separated into gas and liquid by a gas-liquid separation assembly.
When the drainage gas production method provided by the embodiment of the invention is used for drainage gas production operation, firstly, a gas-liquid mixture in a gas outlet layer can be separated into gas and liquid through a gas-liquid separation assembly in the drainage gas production device.
As shown in fig. 3, the power components include a motor 1311, an electric submersible pump 1312, and a cable 1313, wherein the cable 1313 transmits power to the motor 1311, and the motor 1311 transmits power to the electric submersible pump 1312 through a shaft connected thereto. The submersible pump 1312 sucks the gas-liquid mixture from the gas-liquid inlet by driving the gas-liquid separator 132, and performs gas-liquid separation. And then discharged from the gas outlet and the liquid outlet, respectively.
In step 502, a gas is delivered through a gas conduit.
The gas separated by the gas-liquid separator enters a gas pipeline and is conveyed to the ground.
As shown in fig. 2, the gas-liquid separator 132 sucks the gas-liquid mixture into the gas-liquid separator 132 from the gas-liquid inlet k1, discharges the separated gas from the gas outlet k2 to the gas pipe 121, and the gas pipe 121 delivers the separated gas to the ground.
In step 503, the liquid is conveyed into the formation other than the gas layer through the liquid conduit.
The liquid separated by the gas-liquid separator enters a liquid pipeline and is conveyed to other stratums.
As shown in fig. 2, the gas-liquid separator 132 sucks the gas-liquid mixture from the gas-liquid inlet k1 into the gas-liquid separator 132, and discharges the separated liquid from the liquid outlet k3 to the liquid conduit 122 and into another ground layer 2 through an opening in the liquid conduit.
In summary, in the drainage gas production method provided by the embodiment of the present invention, the power unit sucks the gas-liquid mixture from the gas-liquid inlet of the gas-liquid separator, the gas-liquid separator separates the gas-liquid mixture, discharges the gas from the gas outlet, and discharges the liquid from the liquid outlet. The liquid pipeline conveys the liquid to other stratums except the gas outlet layer, and the gas pipeline guides out the gas, so that the gas can be collected without pumping out the liquid in the gas outlet layer. The problems of complex drainage and gas production operation steps and long time consumption in the related technology are solved, and the effects of simplifying the drainage and gas production steps and improving the drainage and gas production efficiency are achieved. Meanwhile, underground liquid does not need to be pumped out of the ground for treatment, so that the cost is saved, the pollution to the environment is avoided, and the yield of the oil well with the same layer of the water injection layer is improved.
The above description is only exemplary of the present invention and should not be taken as limiting the invention, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A water drainage gas recovery device, characterized in that the water drainage gas recovery device comprises:
the gas-liquid separation assembly comprises a pipe column, and a gas-liquid separation assembly and a pipeline assembly which are arranged on the pipe column;
the gas-liquid separation assembly comprises a power component, a gas-liquid separator, and a gas-liquid inlet, a gas outlet and a liquid outlet which are arranged on the gas-liquid separator, wherein the power component is connected with the gas-liquid separator and is configured to suck a gas-liquid mixture into the gas-liquid separator from the gas-liquid inlet, and the gas-liquid separator is configured to discharge gas in the gas-liquid mixture from the gas outlet and discharge liquid in the gas-liquid mixture from the liquid outlet;
the tubing assembly includes a gas conduit and a liquid conduit, one end of the liquid conduit is connected with the liquid outlet and the other end is configured to communicate with other formations other than the gas outlet, the gas conduit communicates with the gas outlet.
2. The water drainage gas production device of claim 1, further comprising a packer disposed on the tubing string,
the packer is disposed between the gas outlet formation and the other formation when the other formation is below the gas outlet formation.
3. The water drainage gas production device of claim 1, further comprising two packers disposed on the string,
when the other stratum is positioned above the gas outlet layer, the two packers are respectively arranged on two sides of the other stratum in a first direction, and the first direction is the length direction of the pipe column.
4. A water and gas drainage and production device according to claim 1, wherein the power unit comprises a motor and an electric submersible pump connected together.
5. The water drainage and gas production device of claim 4, wherein the power component further comprises a cable, and the cable is connected with the motor.
6. The water drainage gas production device according to claim 1, further comprising a check valve,
the check valve is disposed in the liquid conduit.
7. The water drainage gas production device of claim 1, wherein the string comprises a gas transport section that is reused as the gas conduit.
8. A water and gas drainage and production device according to claim 7,
the water drainage and gas production device further comprises a sieve tube, the sieve tube is arranged on the gas delivery section, at least one opening is formed in the sieve tube, and the opening is communicated with the inside of the gas delivery section.
9. A water and gas drainage and production device according to any one of claims 1 to 8, wherein the liquid conduit is provided in the pipe string, the pipe string being provided with an opening configured to communicate with the further formation,
the other end of the liquid pipeline is connected with the opening hole.
10. A water drainage gas production method for use in the water drainage gas production apparatus according to any one of claims 1 to 9, the method comprising:
separating the gas-liquid mixture in the gas outlet layer into gas and liquid through the gas-liquid separation assembly;
transporting the gas through a gas pipeline;
and delivering the liquid into other formations except the gas outlet layer through a liquid pipeline.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810957524.8A CN110847862A (en) | 2018-08-21 | 2018-08-21 | Drainage gas production device and drainage gas production method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810957524.8A CN110847862A (en) | 2018-08-21 | 2018-08-21 | Drainage gas production device and drainage gas production method |
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| CN110847862A true CN110847862A (en) | 2020-02-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577245A (en) * | 2020-05-19 | 2020-08-25 | 成都佳广知科技有限公司 | Intelligent water lifting gas production system and method for natural gas well |
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| US6547003B1 (en) * | 2000-06-14 | 2003-04-15 | Wood Group Esp, Inc. | Downhole rotary water separation system |
| CN1656301A (en) * | 2002-04-24 | 2005-08-17 | 国际壳牌研究有限公司 | Method of producing hydrocarbon gas |
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| CN102828736A (en) * | 2012-09-18 | 2012-12-19 | 中国海洋石油总公司 | Real-time adjustable and controllable hanging type underground oil and water separating system |
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| CN111577245A (en) * | 2020-05-19 | 2020-08-25 | 成都佳广知科技有限公司 | Intelligent water lifting gas production system and method for natural gas well |
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