CN114856502A - Non-reducing shale gas column gas lift wellhead device and installation method - Google Patents
Non-reducing shale gas column gas lift wellhead device and installation method Download PDFInfo
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- CN114856502A CN114856502A CN202210600993.0A CN202210600993A CN114856502A CN 114856502 A CN114856502 A CN 114856502A CN 202210600993 A CN202210600993 A CN 202210600993A CN 114856502 A CN114856502 A CN 114856502A
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- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000009434 installation Methods 0.000 title abstract description 7
- 238000012360 testing method Methods 0.000 claims description 9
- 230000002265 prevention Effects 0.000 claims description 4
- 230000000087 stabilizing effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 238000010276 construction Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 210000000664 rectum Anatomy 0.000 abstract 1
- 238000007689 inspection Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
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Classifications
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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
- E21B43/006—Production of coal-bed methane
-
- 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
- E21B43/122—Gas lift
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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
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- 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
- E21B47/00—Survey of boreholes or wells
-
- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
Abstract
The invention discloses a variable diameter-free shale gas column plug gas lift wellhead device and an installation method, wherein the device comprises: big cross, a main valve, first adapter flange, No. four valve, little cross, second adapter flange, No. seven valve, third adapter flange and the lubricator of coaxial arrangement in proper order from bottom to top, first bushing pipe, second bushing pipe, third bushing pipe and fourth bushing pipe are coaxial from bottom to top installs in the latus rectum of above-mentioned valve, and each bushing pipe internal diameter is unanimous. According to the variable-diameter shale gas well head, after the liner pipe is put into the variable-diameter shale gas well head, the drift diameters of the well head and the production pipe column can be ensured to be consistent, the water drainage and gas production effects of the plunger gas lift are facilitated, the plunger can be ensured to run up and down on the well head, the plunger gas lift well is convenient to periodically check and replace, and the construction cost for salvaging the plunger is reduced.
Description
Technical Field
The invention relates to the technical field of shale gas development, in particular to a variable diameter-free shale gas column gas lift wellhead device and an installation method thereof.
Background
The industrial fracturing is a key technology in shale gas development, and a reservoir stratum needs to be fractured and modified before the shale gas well is put into production. In order to simplify the construction flow and save the investment cost of the gas well, the well is completed by a fracturing wellhead, namely the fracturing wellhead is adopted below a No. 1 main valve and is not replaced, and a conventional wellhead is replaced above the No. 1 valve, so that the drift diameter of a production oil pipe and the drift diameter of the wellhead of the gas well are inconsistent at the wellhead of a gas production tree.
The current common shale gas well adopts a KQ180/78-105EE grade gas production well head (a large four-way, a 1# main valve and a 4# main valve are 105MPa, the main drift diameter is 180mm, a small four-way is 105MPa, the drift diameter is 78mm, and the middle of the large four-way and the small four-way are connected through a conversion flange from 78-105 to 180 plus 105). The production pipe column structure is as follows from bottom to top: 1 piece of phi 88.9mm sieve tube (with bell mouth), 2.95m + 93mm rupture disc, 1 piece of phi 0.24m + 88.9mm 27/8 ' EU-P X27/8 ' NU-B buckle, 1 piece of phi 0.20m + 88.9mm plunger working barrel, 1 piece of phi 0.31m + 27/8 ' NU chamfer oil tube 433 piece, and 4136.41 m.
The well adopts 27/8' oil pipe, and the well head adopts 180mm well head, there is reducing at the well head. When this kind of well adopts plunger gas lift, the plunger can not reach well head lubricator, influences the plunger and moves from top to bottom at the well head, is unfavorable for the periodic inspection of plunger, change, in case the condition of plunger card death or change, inspection plunger appears, must carry out the steel wire operation, increases construction operation cost.
Disclosure of Invention
The invention provides a variable-diameter-free shale gas plunger gas lift wellhead device and an installation method thereof, and aims to solve the problems that in the prior art, for a shale gas well with a variable diameter wellhead, if plunger gas lift is adopted, in the conventional method, only the plunger can be smoothly dropped into a shaft, and whether the plunger can reach a blowout prevention pipe is not considered, so that the periodic inspection of the plunger is not facilitated, the drainage and gas production effects are influenced, and once the plunger is stuck in a well or needs to be replaced, a steel wire operation is required to be performed to salvage, so that the construction cost is increased.
The technical scheme adopted by the invention is as follows: the utility model provides a no reducing shale gas column stopper gas lift wellhead assembly, includes:
the large four-way joint is arranged on the casing head, and the middle part of the large four-way joint is provided with a hanger;
the main valve is coaxially arranged at the upper end of the large four-way joint, and a first gate valve is arranged in the middle of the main valve;
the fourth valve is coaxially arranged at the upper end of the first main valve through a first adapter flange, and a second gate valve is arranged in the middle of the fourth valve;
the small four-way valve is coaxially arranged at the upper end of the fourth valve;
the valve No. seven is coaxially arranged at the upper end of the small four-way valve through a second adapter flange;
the lubricator is coaxially arranged at the upper end of the No. seven valve through a third adapter flange;
the bottom end of the first liner pipe is arranged at the outer thread buckle of the hanger, and the top end of the first liner pipe is positioned below the valve plate of the first gate valve;
the bottom end of the second liner pipe is positioned above the valve plate of the first gate valve, the top end of the second liner pipe is positioned below the valve plate of the second gate valve, and the middle part of the second liner pipe is in threaded connection with the first adapter flange;
the bottom end of the third liner tube is positioned above the valve plate of the second gate valve, the top end of the third liner tube is positioned below the valve plate of the third gate valve, the tube wall of the third liner tube is provided with a through hole communicated with the small four-way joint, and the middle part of the third liner tube is in threaded connection with the second adapter flange; and
the bottom end of the fourth liner tube is positioned on the valve plate of the third gate valve, and the top end of the fourth liner tube is connected with the third adapter flange;
the first liner, the second liner, the third liner and the fourth liner are coaxial and have the same inner diameter.
Furthermore, chamfers are arranged on the inner walls of the two ends of the first liner tube, the second liner tube, the third liner tube and the fourth liner tube.
The invention also provides an installation method of the variable diameter-free shale gas column plug gas lift wellhead device, which comprises the following steps:
s1, closing a well, closing a first main valve and relieving pressure;
s2, removing a wellhead flow, and removing the upper part of the first main valve;
s3, mounting the first liner tube to the lower end of the pressurized taking and delivering device, connecting the pressurized taking and delivering device to the top end of a first main valve through a first adapter flange, testing the pressure at 30MPa, stabilizing the pressure for 15 minutes, checking whether the equipment has external leakage, and performing the next step if the pressure drop of a wellhead is not lower than 0.5 MPa;
s4, opening a first main valve, and lowering a first liner pipe and installing the first liner pipe to the top end of the hanger;
s5, unloading the taking and feeding head, and withdrawing the taking and feeding head to the upper part of the valve plate of the first gate valve;
s6, closing the first main valve, opening the pressure relief device, and relieving excess pressure of the wellhead;
s7, removing the pressurized taking and conveying device;
s8, connecting the second liner tube with the first adapter flange in a threaded manner;
s9, sequentially installing a fourth valve and a small four-way valve;
s10, mounting a second adapter flange to the top end of the small four-way joint, and connecting a third liner pipe with the second adapter flange in a threaded manner;
s11, mounting a seventh valve to the top end of a second adapter flange, and mounting a third adapter flange at the top end of the seventh valve;
s12, mounting a fourth liner pipe on a third adapter flange, and mounting a blowout prevention pipe on the third adapter flange;
s13, closing the No. 7 valve to test pressure, wherein the pressure test is 30MPa, and no pressure drop and no external leakage are qualified;
the first liner, the second liner, the third liner and the fourth liner are coaxial and have the same inner diameter.
The invention has the beneficial effects that: according to the variable-diameter shale gas well head, after the liner pipe is put into the variable-diameter shale gas well head, the drift diameters of the well head and the production pipe column can be ensured to be consistent, the water drainage and gas production effects of the plunger gas lift are facilitated, the plunger can be ensured to run up and down on the well head, the plunger gas lift well is convenient to periodically check and replace, and the construction cost for salvaging the plunger is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a gas lift wellhead without a variable diameter shale gas column plug, disclosed in embodiment 1 of the present invention;
FIG. 2 is an enlarged view of portion D of FIG. 1;
FIG. 3 is an enlarged view of portion C of FIG. 1;
FIG. 4 is an enlarged view of portion B of FIG. 1;
FIG. 5 is an enlarged view of portion A of FIG. 1;
fig. 6 is a schematic structural diagram of the installation of the first liner tube in the pressurized extraction and delivery device disclosed in embodiment 2 of the present invention.
Reference numerals: 1-big four-way, 2-hanger, 3-main valve, 4-first liner, 5-first gate valve, 6-second liner, 7-first adapter flange, 8-fourth valve, 9-second gate valve, 10-third liner, 101-through hole, 11-small four-way, 12-second adapter flange, 13-seventh valve, 14-third gate valve, 15-fourth liner, 16-third adapter flange, 17-lubricator and 18-pressurized taking and delivering device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the accompanying drawings, but embodiments of the present invention are not limited thereto.
Example 1:
referring to fig. 1-5, the present embodiment discloses a gas lift wellhead without a variable diameter shale gas plug, including: the large four-way joint 1 is arranged on the casing head, and the middle part of the large four-way joint 1 is provided with a hanger 2; the first main valve 3 is coaxially arranged at the upper end of the large four-way valve 1, and a first gate valve 5 is arranged in the middle of the main valve; the fourth valve 8 is coaxially arranged at the upper end of the first main valve 3 through a first adapter flange 7, and a second gate valve 9 is arranged in the middle of the fourth valve; the small four-way valve 11 is coaxially arranged at the upper end of the fourth valve 8; the seventh valve 13 is coaxially arranged at the upper end of the small four-way valve 11 through a second adapter flange 12; the lubricator 17 is coaxially arranged at the upper end of the No. seven valve 13 through a third adapter flange 16; a first liner 4, the bottom end of which is installed at the external thread of the hanger 2 and the top end of which is positioned below the valve plate of the first gate valve 5; the bottom end of the second liner tube 6 is positioned above the valve plate of the first gate valve 5, the top end of the second liner tube is positioned below the valve plate of the second gate valve 9, and the middle part of the second liner tube is in threaded connection with the first adapter flange 7; the bottom end of the third liner tube 10 is positioned above the valve plate of the second gate valve 9, the top end of the third liner tube is positioned below the valve plate of the third gate valve 14, the wall of the third liner tube is provided with a through hole 101 communicated with the small four-way valve 11, and the middle part of the third liner tube is in threaded connection with the second adapter flange 12; a fourth liner pipe 15, the bottom end of which is positioned above the valve plate of the third gate valve 14, and the top end of which is connected with the third adapter flange 16; the first, second, third and fourth liners 4, 6, 10, 15 are coaxial and have a uniform internal diameter.
Preferably, chamfers are arranged on the inner walls of the two ends of the first liner 4, the second liner 6, the third liner 10 and the fourth liner 15, so that the plunger can smoothly enter the sleeve.
According to the variable-diameter shale gas well head, after the liner pipe is put into the variable-diameter shale gas well head, the drift diameters of the well head and the production pipe column can be ensured to be consistent, the water drainage and gas production effects of the plunger gas lift are facilitated, the plunger can be ensured to run up and down on the well head, the plunger gas lift well can be conveniently and periodically checked and replaced, and the operation construction cost is reduced.
Example 2
The embodiment discloses a method for installing a gas lift wellhead device without a variable diameter shale gas column plug, which comprises the following steps:
s1, closing the well, closing the first main valve 3 and relieving pressure;
s2, removing a wellhead flow, and removing the upper part of the first main valve 3;
s3, installing the first liner pipe 4 to the lower end of the pressurized taking and delivering device, connecting the pressurized taking and delivering device 18 (the existing mature product, see figure 6) to the top end of the first main valve 3 through the first adapter flange 7, testing the pressure at 30MPa for 15 minutes, and checking whether the equipment has external leakage or not, and if the pressure drop of a wellhead is not lower than 0.5MPa, performing the next step;
s4, opening a first main valve 3, and lowering a first liner pipe 4 and installing the first liner pipe to the top end of the hanger 2;
s5, unloading the taking and feeding head, and withdrawing the taking and feeding head to the upper part of the valve plate of the first gate valve 5;
s6, closing the first main valve 3, opening the pressure relief device, and relieving the residual pressure of the wellhead;
s7, removing the pressurized taking and conveying device;
s8, connecting the second liner tube 6 with the first adapter flange 7 in a threaded manner;
s9, sequentially installing a fourth valve 8 and a small four-way valve 11;
s10, mounting a second adapter flange 12 to the top end of the small cross 11, and connecting the third liner tube 10 with the second adapter flange 12 in a threaded manner;
s11, mounting a seventh valve 13 to the top end of a second adapter flange 12, and mounting a third adapter flange 16 at the top end of the seventh valve 13;
s12, mounting a fourth liner tube 15 on a third adapter flange 16, and mounting a blowout prevention pipe 17 on the third adapter flange 16;
s13, closing the No. 7 valve to test pressure, wherein the pressure test is 30MPa, and no pressure drop and no external leakage are qualified;
the first, second, third and fourth liners 4, 6, 10, 15 are coaxial and have a uniform internal diameter.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (3)
1. The utility model provides a no reducing shale gas column stopper gas lift wellhead assembly which characterized in that includes:
the large four-way joint is arranged on the casing head, and the middle part of the large four-way joint is provided with a hanger;
the main valve is coaxially arranged at the upper end of the large four-way joint, and a first gate valve is arranged in the middle of the main valve;
the fourth valve is coaxially arranged at the upper end of the first main valve through a first adapter flange, and a second gate valve is arranged in the middle of the fourth valve;
the small four-way valve is coaxially arranged at the upper end of the fourth valve;
the valve No. seven is coaxially arranged at the upper end of the small four-way valve through a second adapter flange;
the lubricator is coaxially arranged at the upper end of the No. seven valve through a third adapter flange;
the bottom end of the first liner pipe is arranged at the outer thread buckle of the hanger, and the top end of the first liner pipe is positioned below the valve plate of the first gate valve;
the bottom end of the second liner pipe is positioned above the valve plate of the first gate valve, the top end of the second liner pipe is positioned below the valve plate of the second gate valve, and the middle part of the second liner pipe is in threaded connection with the first adapter flange;
the bottom end of the third liner tube is positioned above the valve plate of the second gate valve, the top end of the third liner tube is positioned below the valve plate of the third gate valve, the tube wall of the third liner tube is provided with a through hole communicated with the small four-way joint, and the middle part of the third liner tube is in threaded connection with the second adapter flange; and
the bottom end of the fourth liner tube is positioned on the valve plate of the third gate valve, and the top end of the fourth liner tube is connected with the third adapter flange;
the first liner, the second liner, the third liner and the fourth liner are coaxial and have the same inner diameter.
2. The variable diameter-free shale gas plug gas lift wellhead assembly according to claim 1, wherein chamfers are arranged on inner walls of two ends of the first liner, the second liner, the third liner and the fourth liner.
3. A method for installing a non-reducing shale gas column plug gas lift wellhead device is characterized by comprising the following steps:
s1, closing a well, closing a first main valve and relieving pressure;
s2, removing a wellhead flow, and removing the upper part of the first main valve;
s3, installing the first liner tube to the lower end of the under-pressure taking and delivering device, connecting the under-pressure taking and delivering device to the top end of a first main valve through a first adapter flange, testing the pressure at 30MPa, stabilizing the pressure for 15 minutes, checking whether the equipment has external leakage, and performing the next step if the pressure drop of a wellhead is not lower than 0.5 MPa;
s4, opening a first main valve, and lowering a first liner pipe and installing the first liner pipe to the top end of the hanger;
s5, unloading the taking and feeding head, and withdrawing the taking and feeding head to the upper part of the valve plate of the first gate valve;
s6, closing the first main valve, opening the pressure relief device, and relieving excess pressure of the wellhead;
s7, removing the pressurized taking and conveying device;
s8, connecting the second liner tube with the first adapter flange in a threaded manner;
s9, sequentially installing a fourth valve and a small four-way valve;
s10, mounting a second adapter flange to the top end of the small four-way joint, and connecting a third liner pipe with the second adapter flange in a threaded manner;
s11, mounting a seventh valve to the top end of a second adapter flange, and mounting a third adapter flange at the top end of the seventh valve;
s12, mounting a fourth liner pipe on a third adapter flange, and mounting a blowout prevention pipe on the third adapter flange;
s13, closing the No. 7 valve to test pressure, wherein the pressure test is 30MPa, and no pressure drop and no external leakage are qualified;
the first liner, the second liner, the third liner and the fourth liner are coaxial and have the same inner diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210600993.0A CN114856502A (en) | 2022-05-30 | 2022-05-30 | Non-reducing shale gas column gas lift wellhead device and installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210600993.0A CN114856502A (en) | 2022-05-30 | 2022-05-30 | Non-reducing shale gas column gas lift wellhead device and installation method |
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| Publication Number | Publication Date |
|---|---|
| CN114856502A true CN114856502A (en) | 2022-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210600993.0A Pending CN114856502A (en) | 2022-05-30 | 2022-05-30 | Non-reducing shale gas column gas lift wellhead device and installation method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4867243A (en) * | 1988-05-20 | 1989-09-19 | Garner Jonathan W | Wellhead isolation tool and setting and method of using same |
| US6328111B1 (en) * | 1999-02-24 | 2001-12-11 | Baker Hughes Incorporated | Live well deployment of electrical submersible pump |
| US20130025848A1 (en) * | 2011-07-29 | 2013-01-31 | Douglas Wade Schepp | Wellhead assembly having a nested tubing head |
| CN107208457A (en) * | 2015-01-26 | 2017-09-26 | 韦特福特科技控股有限责任公司 | Modular top drive system |
| CN209817952U (en) * | 2019-04-15 | 2019-12-20 | 成都百胜野牛科技有限公司 | Bushing pipe device and wellhead assembly |
| CN111594087A (en) * | 2020-06-03 | 2020-08-28 | 中国石油天然气股份有限公司 | Wellhead device suitable for plunger gas lift drainage gas production and operation method thereof |
-
2022
- 2022-05-30 CN CN202210600993.0A patent/CN114856502A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4867243A (en) * | 1988-05-20 | 1989-09-19 | Garner Jonathan W | Wellhead isolation tool and setting and method of using same |
| US6328111B1 (en) * | 1999-02-24 | 2001-12-11 | Baker Hughes Incorporated | Live well deployment of electrical submersible pump |
| US20130025848A1 (en) * | 2011-07-29 | 2013-01-31 | Douglas Wade Schepp | Wellhead assembly having a nested tubing head |
| CN107208457A (en) * | 2015-01-26 | 2017-09-26 | 韦特福特科技控股有限责任公司 | Modular top drive system |
| CN209817952U (en) * | 2019-04-15 | 2019-12-20 | 成都百胜野牛科技有限公司 | Bushing pipe device and wellhead assembly |
| CN111594087A (en) * | 2020-06-03 | 2020-08-28 | 中国石油天然气股份有限公司 | Wellhead device suitable for plunger gas lift drainage gas production and operation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 李祥等: "不压井作业技术在金坛盐穴储气库中的应用", 《石油钻采工艺》 * |
| 西南油气田公司编著: "《采气工安全操作读本》", 31 December 2013, 北京：中国工人出版社 * |
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Application publication date: 20220805 |