CN112377148A - Speed pipe communication device and method - Google Patents
Speed pipe communication device and method Download PDFInfo
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- CN112377148A CN112377148A CN202011263323.1A CN202011263323A CN112377148A CN 112377148 A CN112377148 A CN 112377148A CN 202011263323 A CN202011263323 A CN 202011263323A CN 112377148 A CN112377148 A CN 112377148A
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- 238000004891 communication Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 35
- 239000007789 gas Substances 0.000 claims abstract description 37
- 238000005520 cutting process Methods 0.000 claims abstract description 8
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 5
- 239000011261 inert gas Substances 0.000 claims description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 21
- 239000004568 cement Substances 0.000 abstract description 11
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 7
- 239000007788 liquid Substances 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000010008 shearing Methods 0.000 description 4
- 238000010924 continuous production Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- -1 draining Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/066—Valve arrangements for boreholes or wells in wells electrically actuated
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
The invention discloses a speed pipe communication device and a speed pipe communication method. The process procedure of pressurizing the speed pipe by using a high-pressure nitrogen making vehicle (or a cement vehicle), cutting off a plug pin and communicating the speed pipe with a shaft is omitted on the site, so that the cost and the operation matching time of renting the high-pressure nitrogen making vehicle (or the cement vehicle) are saved, shaft bottom falling objects cannot be formed, the pollution of high-pressure gas (liquid) entering the shaft to the reservoir is reduced, the reservoir protection of a gas well is realized, the operation cost can be reduced by more than 30% in prediction, the operation time is reduced by more than 1 day, and the space and the benefit of the popularization and application of the speed pipe technology are greatly improved.
Description
Technical Field
The invention relates to the technical field of mining, in particular to a speed pipe communication device and a speed pipe communication method.
Background
For a water producing gas well, the technology of drainage and gas production by using a velocity tube technology is the most economical, effective and continuous drainage and gas production technology. With the continuous production of the gas well, the gas production rate continuously decreases, the water production rate continuously increases, and the production string in the original production well does not meet the critical gas flow rate condition of gas carrying water production due to the large general diameter of the production string, and at the moment, a coiled tubing (commonly called as a velocity tube) with a small diameter is put into the original production string (tubing), so that the optimal process for maintaining gas carrying liquid, draining, gas production and continuous production of the gas well is formed.
The velocity tube technology is the first choice drainage gas production mode for gas-carrying water production of the gas well with low gas production rate and low water production rate. The currently common run-in process is: a blanking plug is arranged at the lower end of the speed pipe; running a speed pipe under the condition of no killing operation; hanging and cutting off the speed pipe column; injecting high-pressure gas or liquid into the speed pipe by using a high-pressure nitrogen making vehicle or a cement vehicle; and (4) pressurizing and shearing the plug pin, communicating the speed pipe with the oil pipe to form a gas production channel, and performing drainage and gas production. The defects of the process are as follows: 1. the communicated speed pipe needs a high-pressure nitrogen making vehicle (or a cement vehicle), the field popularization is greatly limited, and meanwhile, the cement vehicle injects water into the well, so that the reservoir stratum is possibly polluted; 2. the blanking plug forms a falling object in the well to influence the work in the well; 3. the communication operation needs one day, so that the operation period is prolonged, and the operation cost is increased.
Disclosure of Invention
In view of the above, a first object of the present invention is to provide a velocity tube communicating apparatus, which has a structure designed to effectively save the cost of lowering a velocity tube into a well, greatly reduce the operation time, and prevent a plug from falling into the well, and a second object of the present invention is to provide a velocity tube communicating method using the velocity tube communicating apparatus.
In order to achieve the first object, the invention provides the following technical scheme:
the utility model provides a speed pipe UNICOM device, includes the speed pipe, install in check valve in the speed pipe with install in pipeline valve in the speed pipe, the check valve deviates from one side of pipeline valve is first side just the check valve is close to one side of pipeline valve is the second side, fluid can by when the check valve switches on the first side flow direction second side of check valve.
Preferably, in the above speed pipe communicating device, when the speed pipe goes down the well, the check valve is located at the lower end of the speed pipe, and the pipeline valve is located at the upper end of the speed pipe.
A velocity tube communication method, comprising the steps of:
cutting, namely cutting a speed tube with a preset length;
the safety valve is characterized by comprising a check valve and a pipeline valve, wherein the check valve and the pipeline valve are arranged in the speed pipe, and gas is filled between the check valve and the pipeline valve so as to keep a preset pressure threshold value between the check valve and the pipeline valve;
installing a hanger, a blowout preventer and an injection head;
descending the well, gradually descending the speed pipe into the well, enabling the one-way valve to be located on the lower side of the pipeline valve when the speed pipe descends in place, connecting the speed pipe with the hanger after the speed pipe descends in place, and detaching the blowout preventer and the injection head;
and (4) communicating, namely communicating the upper end of the speed pipe with a gathering and transportation pipeline, opening a pipeline valve, and then opening a check valve.
Preferably, in the above method for communicating velocity tubes, the step of communicating between the well and the well further comprises the steps of:
a preset pressure is applied to the well for a preset period of time.
Preferably, in the above method for communicating a velocity tube, the preset pressure is 15 to 55 Mpa.
Preferably, in the speed pipe communication method, in the cutting step, the preset length of the speed pipe is not less than the downhole depth of the speed pipe.
Preferably, in the speed pipe communication method, the gas filled between the check valve and the pipeline valve in the valve installation step is an inert gas.
Preferably, in the speed pipe communication method, the check valve and the pipeline valve are both electrically controlled valves.
The speed pipe communication device provided by the invention comprises a speed pipe, a one-way valve and a pipeline valve. Wherein, the check valve is installed in the speed pipe, and the pipeline valve is also installed in the speed pipe. The check valves and the pipeline valves are sequentially arranged along the length direction of the speed pipe. One side that the check valve deviates from the pipeline valve is the first side, and one side that the check valve is close to the pipeline valve is the second side, and fluid can be by the first side flow to the second side of check valve when the check valve switches on. When the one-way valve is conducted, the fluid flows to the pipeline valve from the one-way valve.
When the speed pipe communication device provided by the embodiment is applied, gas is filled between the one-way valve and the pipeline valve, so that a preset pressure threshold value is kept between the one-way valve and the pipeline valve, and the one-way valve is prevented from moving upwards under the action of high pressure in a well. And gradually lowering the speed pipe communication device into the well, wherein the one-way valve and the pipeline valve are closed in the process of lowering the speed pipe communication device into the well. After the speed pipe descends to the right position, the upper end of the speed pipe is communicated with the gathering and transportation pipeline, the pipeline valve is opened, and then the check valve is opened, so that the communication between the speed pipe and the oil pipe can be completed.
The speed pipe communicating device provided by the invention can be used for completing the assembly and internal pressure injection of the speed pipe communicating device in a factory, the process procedures of pressurizing the speed pipe by using a high-pressure nitrogen making vehicle (or a cement vehicle), shearing a stopper pin and communicating the speed pipe with a shaft are omitted on site, the cost of renting the high-pressure nitrogen making vehicle (or the cement vehicle) and the operation matching time are omitted, shaft bottom falling objects cannot be formed, the pollution of high-pressure gas (liquid) entering the shaft to the reservoir is reduced, the reservoir protection of a gas well is realized, the operation cost can be saved by more than 30%, the operation time is reduced by more than 1 day, and the space and the benefit of the popularization and application of the speed pipe technology are greatly improved.
In order to achieve the second objective, the present invention further provides a velocity tube communication method, which has corresponding technical effects to the velocity tube communication device, and will not be described herein again.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a velocity tube communicating device provided in an embodiment of the present invention;
fig. 2 is a flowchart of a speed pipe communication method according to an embodiment of the present invention.
In FIGS. 1-2:
1-hanger, 2-speed pipe, 3-oil pipe, 4-one-way valve, 5-reservoir and 6-pipeline valve.
Detailed Description
The first purpose of the invention is to provide a speed pipe communication device, the structure design of which can effectively save the well descending cost of the speed pipe, greatly reduce the operation time and prevent the blanking plug from falling into the well, and the second purpose of the invention is to provide a speed pipe communication method using the speed pipe communication device.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left" and "right", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the positions or elements referred to must have specific orientations, be constructed in specific orientations, and be operated, and thus are not to be construed as limitations of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, the speed pipe communication device provided by the present invention includes a speed pipe 2, a check valve 4 and a pipeline valve 6. Wherein, the check valve 4 is installed in the speed pipe 2, and the pipeline valve 6 is also installed in the speed pipe 2. The check valve 4 and the pipe valve 6 are arranged in sequence along the length direction of the velocity pipe 2. One side of the one-way valve 4 departing from the pipeline valve 6 is a first side, one side of the one-way valve 4 close to the pipeline valve 6 is a second side, and when the one-way valve 4 is conducted, fluid can flow from the first side to the second side of the one-way valve 4. I.e. the non return valve 4 is open, fluid flows from the non return valve 4 to the pipe valve 6.
When the speed pipe communication device provided by the embodiment is applied, gas is filled between the check valve 4 and the pipeline valve 6, so that a preset pressure threshold value is kept between the check valve 4 and the pipeline valve 6, and the check valve 4 is prevented from moving upwards under the action of high pressure in a well. And then gradually lowering the speed pipe communication device into the well, wherein the one-way valve 4 and the pipeline valve 6 are closed in the process of lowering the speed pipe communication device into the well. After the velocity tube 2 descends to the right position, the upper end of the velocity tube 2 is communicated with the gathering and transportation pipeline, the pipeline valve 6 is opened, and then the one-way valve 4 is opened, so that the communication between the velocity tube 2 and the oil tube 3 can be completed.
The speed pipe communicating device provided by the invention can be used for completing the assembly and internal pressure injection of the speed pipe communicating device in a factory, the process procedures of pressurizing the speed pipe 2 by using a high-pressure nitrogen making vehicle (or a cement vehicle), shearing a stopper pin and communicating the speed pipe 2 with a shaft are omitted on site, the cost and the operation matching time of renting the high-pressure nitrogen making vehicle (or the cement vehicle) are omitted, shaft bottom falling objects cannot be formed, the pollution of high-pressure gas (liquid) entering the shaft to the reservoir 5 is reduced, the reservoir 5 of a gas well is protected, the operation cost can be saved by more than 30%, the operation time is shortened by more than 1 day, and the space and the benefit of the speed pipe 2 technology popularization and application are greatly improved.
The one-way valve 4 is arranged in the velocity tube 2, so that when the pressure outside the velocity tube 2 is larger than the pressure inside the velocity tube 2, fluid outside the tube wants to flow into the tube, but when the pressure inside the tube is larger than the pressure outside the tube, the one-way valve 4 is closed, and the fluid inside the tube cannot flow out, thereby preventing and treating pollution to the reservoir 5.
In a specific embodiment, when the velocity tube 2 is downhole, the check valve 4 is located at the lower end of the velocity tube 2, and the pipeline valve 6 is located at the upper end of the velocity tube 2. Of course, the check valve 4 and the pipeline valve 6 may be located closer to the middle of the velocity tube 2, and are not limited thereto.
Based on the speed pipe communication device provided in the above embodiment, the invention also provides a speed pipe communication method, which includes the steps of:
s1: cutting to obtain a speed tube 2 with a preset length;
the velocity tube 2 is first cut off to obtain a velocity tube 2 of a preset length.
S2: the safety valve is characterized by comprising a check valve 4 and a pipeline valve 6 which are arranged in the speed pipe 2, and gas is filled between the check valve 4 and the pipeline valve 6 so as to keep a preset pressure threshold value between the check valve 4 and the pipeline valve 6;
a check valve 4 and a pipeline valve 6 are respectively installed in the speed pipe 2. Specifically, the check valve 4 is installed at the lower end of the speed pipe 2, the pipeline valve 6 is installed at the upper end of the speed pipe 2, and when the check valve 4 is conducted, the fluid flows from bottom to top, that is, the fluid flows from the check valve 4 to the pipeline valve 6. And filling gas between the one-way valve 4 and the pipeline valve 6 to keep a preset pressure threshold between the one-way valve 4 and the pipeline valve 6, and preventing the one-way valve 4 from moving upwards due to the action of high pressure in the well.
S3: installing a hanger 1, a blowout preventer and an injection head;
in order to facilitate the installation of the hanger 1, the blowout preventer and the injection head, the accessories of the wellhead gas production tree can be removed before installation, and then the hanger 1, the blowout preventer and the injection head are installed in sequence.
S4: descending a well, gradually descending the speed pipe 2 into the well, enabling the check valve 4 to be located on the lower side of the pipeline valve 6 when descending, connecting the speed pipe 2 with the hanger 1 after the speed pipe 2 descends in place, and removing the well plugging device and the injection head;
the speed pipe 2 is gradually lowered into the well, the check valve 4 is positioned at the lower side of the pipeline valve 6 when the speed pipe is lowered, and when the check valve 4 is conducted, fluid flows to the pipeline valve 6 from the check valve 4.
And after the speed pipe 2 descends to the right position, connecting the speed pipe 2 with the hanger 1, and dismantling the blowout preventer and the injection head. The non-return valve 4 and the pipe valve 6 remain closed during this step.
And rotating the compression bolt on the hanger 1 at a constant speed until the self weight of the instrument display speed pipe 2 is zero, and then setting the hanger 1 on the oil pipe 3 to finish the suspension of the speed pipe 2.
And (3) removing the blowout preventer and the injection head, recovering a gas production tree and the like, and installing the gas production tree on the upper part of the hanger 1 to complete the installation work of a gas production wellhead and meet the production operation requirements.
S5: and (4) communicating, namely communicating the upper end of the speed pipe 2 with a gathering and transportation pipeline, opening a pipeline valve 6, and then opening a one-way valve 4.
The upper end of the speed pipe 2 is connected into a gathering and transportation pipeline, a pipeline valve 6 is opened, under the action of the pressure in the well, the underground one-way valve 4 is opened, the speed pipe 2 is unblocked, and the communication between the speed pipe 2 and the oil pipe 3 is completed.
Preferably, a step S40 is further included between steps S4 and S5:
and applying preset pressure in the well and maintaining for a preset time period so as to ensure the reliability of the blowout preventer and prevent blowout.
Preferably, in the above embodiment, the predetermined pressure is 15 to 55 Mpa. Specifically, the preset pressure may be set according to actual conditions, and may be, for example, 20Mpa, 40Mpa, 50Mpa, or the like, which is not limited herein.
In step S1, the preset length of the velocity tube 2 is not less than the downhole depth of the velocity tube 2. Specifically, the preset length of velocity tube 2 may be equal to the downhole depth of velocity tube 2, or the preset length of velocity tube 2 may be greater than the downhole depth of velocity tube 2. Of course, the preset length of the velocity tube 2 may be slightly smaller than the downhole depth of the velocity tube 2, and is not limited herein.
In step S2, the gas filled between the check valve 4 and the pipe valve 6 may be nitrogen gas, but may also be other inert gases, which is not limited herein.
In order to facilitate the control of the opening and closing of the check valve 4 and the pipeline valve 6, the check valve 4 and the pipeline valve 6 can be both electrically controlled valves.
The speed pipe communication method provided by the invention saves the process procedures of pressurizing the speed pipe 2 by using a high-pressure nitrogen making vehicle (or a cement vehicle), shearing a stopper pin and communicating the speed pipe 2 with a shaft on site, so that the cost and the operation matching time of renting the high-pressure nitrogen making vehicle (or the cement vehicle) are saved, shaft bottom falling objects cannot be formed, the pollution of high-pressure gas (liquid) entering the shaft to the reservoir 5 is reduced, the reservoir 5 of a gas well is protected, the operation cost can be saved by more than 30 percent in prediction, the operation time is reduced by more than 1 day, and the space and the benefit of the technical popularization and application of the speed pipe 2 are greatly improved.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. The utility model provides a speed pipe UNICOM's device, its characterized in that, include speed pipe (2), install in check valve (4) in speed pipe (2) and install in pipeline valve (6) in speed pipe (2), check valve (4) deviate from one side of pipeline valve (6) is first side just check valve (4) are close to one side of pipeline valve (6) is the second side, fluid can by when check valve (4) switch on the first side flow direction second side of check valve (4).
2. Velocity tube communication device according to claim 1, characterized in that the one-way valve (4) is located at the lower end of the velocity tube (2) and the pipe valve (6) is located at the upper end of the velocity tube (2) when the velocity tube (2) is run downhole.
3. A method of communicating velocity tubes, comprising the steps of:
cutting to obtain a speed pipe (2) with a preset length;
the safety valve is characterized by comprising a check valve (4) and a pipeline valve (6) which are arranged in the speed pipe (2), and gas is filled between the check valve (4) and the pipeline valve (6) so that a preset pressure threshold value is kept between the check valve (4) and the pipeline valve (6);
installing a hanger (1), a blowout preventer and an injection head;
descending a well, gradually descending the speed pipe (2) into the well, positioning the check valve (4) at the lower side of the pipeline valve (6) when descending, connecting the speed pipe (2) with the hanger (1) after the speed pipe (2) descends in place, and detaching the blowout preventer and the injection head;
and (4) communicating, namely communicating the upper end of the speed pipe (2) with a gathering and transportation pipeline, opening a pipeline valve (6), and then opening a one-way valve (4).
4. The velocity tube communication method according to claim 3, wherein said step of running well and communicating further comprises the steps of:
a preset pressure is applied to the well for a preset period of time.
5. The velocity tube communication method according to claim 4, wherein the predetermined pressure is 15-55 Mpa.
6. The velocity tube communication method according to claim 3, wherein in the cutting step, the preset length of the velocity tube (2) is not less than the well-descending depth of the velocity tube (2).
7. The velocity tube communication method according to claim 3, wherein the gas filled between the check valve (4) and the pipe valve (6) in the valve installation step is an inert gas.
8. Velocity pipe communication method according to claim 3, characterized in that the pipe valve (6) is an electrically controlled valve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011263323.1A CN112377148B (en) | 2020-11-12 | 2020-11-12 | Speed pipe communication device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011263323.1A CN112377148B (en) | 2020-11-12 | 2020-11-12 | Speed pipe communication device and method |
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| CN112377148A true CN112377148A (en) | 2021-02-19 |
| CN112377148B CN112377148B (en) | 2023-01-03 |
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