CN116025302A - Drainage gas production double-pipe-column electric submersible pump wellhead device - Google Patents
Drainage gas production double-pipe-column electric submersible pump wellhead device Download PDFInfo
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- CN116025302A CN116025302A CN202111250265.3A CN202111250265A CN116025302A CN 116025302 A CN116025302 A CN 116025302A CN 202111250265 A CN202111250265 A CN 202111250265A CN 116025302 A CN116025302 A CN 116025302A
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- drainage
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- assembly
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 72
- 238000002347 injection Methods 0.000 claims description 21
- 239000007924 injection Substances 0.000 claims description 21
- 238000007789 sealing Methods 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 239000004519 grease Substances 0.000 claims description 13
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 230000002146 bilateral effect Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 4
- 238000009826 distribution Methods 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The invention relates to the technical field of double-pipe wellhead devices, in particular to a double-pipe-string electric submersible pump wellhead device for drainage and gas production, which comprises a tubing head four-way joint, a drainage pipe string hanger, a gas production pipe string hanger, a tubing head reducing joint, a gas production tree assembly, a left drainage assembly, a right drainage assembly and a cable traversing device. The invention has reasonable and compact structure and convenient use, can realize the high-efficiency production of the gas well by arranging the drainage pipe column hanger, the gas production pipe column hanger, the cable traversing device and the like in combination with the high-efficiency drainage gas production process such as the electric submersible pump, the screw pump and the like, realizes concentric distribution of large and small oil pipes on the double-pipe wellhead and rapid separation of gas and liquid, reduces the operation time and cost, and has the characteristics of safety, labor saving, simplicity, convenience and high efficiency.
Description
Technical Field
The invention relates to the technical field of double-pipe wellhead devices, in particular to a drainage gas production double-pipe-column electric submersible pump wellhead device.
Background
The existing double-oil-pipe wellhead device in the current industry is mainly of a non-concentric design, the wellhead design is complex in structure and high in maintenance difficulty, and has the serious defect that the well-bore accumulated liquid can not be efficiently discharged by matching with processes such as an electric submersible pump and a screw pump, selective production of production pipe columns with different diameters can only be realized, and when oil pipes in a well bore are damaged in the later period, a well head blowout preventer special for well repair is needed when the original oil pipe of the well bore is lifted out, so that certain difficulty is caused to production and maintenance of the gas well in the later period.
Disclosure of Invention
The invention provides a water drainage and gas production double-pipe-column electric submersible pump wellhead device, which overcomes the defects of the prior art, and can effectively solve the problem that the existing double-pipe wellhead device cannot be matched with processes such as an electric submersible pump, a screw pump and the like to realize efficient drainage of accumulated liquid in a shaft.
The technical scheme of the invention is realized by the following measures: the utility model provides a drainage gas production double-pipe column electric submersible pump wellhead assembly, including tubing head cross, drainage tubular column hanger, gas production tubular column hanger, tubing head reducing joint, gas production tree assembly, left drainage assembly, right drainage assembly and cable pass through ware, tubing head cross middle part is equipped with the main passageway that link up from top to bottom, tubing head cross lower part is equipped with the cable passageway with main passageway intercommunication, be equipped with the cable and pass through the ware in the cable passageway, tubing head cross middle part bilateral symmetry is equipped with left drainage assembly and right drainage assembly with main passageway intercommunication, the main passageway inboard that corresponds cable passageway top position is equipped with first interior annular and second interior annular from top to bottom interval in proper order, it has gas production tubular column hanger to seat respectively in first interior annular and the second interior annular inslot, gas production tubular column hanger upside fixed intercommunication has the gas production tree assembly.
The following are further optimizations and/or improvements to the above-described inventive solution:
the oil pipe head four-way lower part corresponding to the lower part of the left drainage assembly and the right drainage assembly is provided with two groups of water injection assemblies fixedly communicated with the main channel along the circumference at intervals.
The drainage pipe column hanger is characterized by further comprising a positioning boss, wherein a first positioning opening with an outward opening is arranged at the outer side of the lower end of the drainage pipe column hanger, a second positioning opening with an outward opening is arranged at the outer side of the lower end of the drainage pipe column hanger, and positioning bosses matched with the first positioning opening and the second positioning opening are respectively arranged in the first inner annular groove and the second inner annular groove which correspond to the positions of the first positioning opening and the second positioning opening through threaded connection.
The outer side of the lower end of the tubing head four-way joint can be circumferentially provided with radial grease injection holes and radial pressure relief holes which are communicated with the main channel.
The oil production pipe column hanger and the drainage pipe column hanger are respectively provided with at least one S sealing ring at intervals from top to bottom with the inner sides of the main channels at corresponding positions.
The inner side of the upper part of the gas production pipe column hanger can be provided with a back pressure valve thread.
The tubing head four-way joint corresponding to the upper side of the tubing string hanger is provided with at least two internally and externally through threaded holes in a circumferential manner, the threaded holes are internally provided with jackscrews with inner ends propped against the upper side of the outer end of the tubing string hanger, the tubing head four-way joint corresponding to the upper side of the drainage string hanger is provided with at least two internally and externally through threaded holes in a circumferential manner, and the threaded holes are internally provided with jackscrews with inner ends propped against the upper side of the outer end of the drainage string hanger.
The invention has reasonable and compact structure and convenient use, can realize the high-efficiency production of the gas well by arranging the drainage pipe column hanger, the gas production pipe column hanger, the cable traversing device and the like in combination with the high-efficiency drainage gas production process such as the electric submersible pump, the screw pump and the like, realizes concentric distribution of large and small oil pipes on the double-pipe wellhead and rapid separation of gas and liquid, reduces the operation time and cost, and has the characteristics of safety, labor saving, simplicity, convenience and high efficiency.
Drawings
Fig. 1 is a schematic view of a partial sectional structure of a preferred embodiment of the present invention.
Fig. 2 is an enlarged schematic view in front view in section of the drainage string hanger of fig. 1.
Fig. 3 is a schematic perspective view of the drainage string hanger of fig. 1.
Fig. 4 is an enlarged schematic view in front cross-section of the gas production hanger of fig. 1.
Fig. 5 is a schematic perspective view of the gas production hanger of fig. 1.
The codes in the drawings are respectively: 1 is a tubing head four-way, 2 is a drainage string hanger, 3 is a tubing string hanger, 4 is a tubing head reducing joint, 5 is a tubing tree assembly, 6 is a left drainage assembly, 7 is a right drainage assembly, 8 is a cable crossing device, 9 is a water injection assembly, 10 is a first positioning port, 11 is a second positioning port, 12 is a positioning boss, 13 is a radial grease injection hole, 14 is a radial pressure relief hole, 15 is an FS sealing ring, 16 is an S sealing ring, 17 is a back pressure valve thread, and 18 is a jackscrew.
Detailed Description
The present invention is not limited by the following examples, and specific embodiments can be determined according to the technical scheme and practical situations of the present invention.
In the present invention, for convenience of description, the description of the relative positional relationship of each component is described according to the layout manner of fig. 1 of the specification, for example: the positional relationship of the front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of the drawings of the specification.
The invention is further described below with reference to examples and figures:
as shown in the attached drawings 1 to 5, the wellhead device of the drainage gas production double-pipe-column electric submersible pump comprises a tubing head four-way 1, a drainage pipe column hanger 2, a gas production pipe column hanger 3, a tubing head reducing joint 4, a gas production tree assembly 5, a left drainage assembly 6, a right drainage assembly 7 and a cable traversing device 8, wherein a main channel which is penetrated up and down is arranged in the middle of the tubing head four-way 1, a cable channel which is communicated with the main channel is arranged at the lower part of the tubing head four-way 1, the cable traversing device 8 is arranged in the cable channel, the left drainage assembly 6 and the right drainage assembly 7 which are communicated with the main channel are symmetrically arranged in the middle of the tubing head four-way 1, a first inner annular groove and a second inner annular groove are sequentially arranged at intervals from top to bottom on the inner side of the main channel corresponding to the position above the cable channel, the gas production pipe column hanger 3 and the drainage pipe column hanger 2 are respectively arranged in the first inner annular groove and the second inner annular groove, and the gas production tree assembly 5 is fixedly communicated at the upper side of the gas production pipe column hanger 3.
When the underground gas production system is used, the inner side of the lower end of the main channel is provided with an oil layer sleeve, the inner side of the oil layer sleeve is provided with a drainage pipe column, the inner side of the drainage pipe column is provided with a gas production pipe column, the gas production pipe column hanger 3 and the drainage pipe column hanger 2 are lowered to corresponding positions, then drainage and gas production pipe columns are lowered to the corresponding positions of the gas production pipe column hanger 3 and the drainage pipe column hanger 2, the oil pipe head four-way joint 1 is provided with a first inner annular groove and a second inner annular groove, the bearing is respectively provided for the drainage pipe column hanger 2 and the gas production pipe column hanger 3, the sealing of water vapor is ensured, the gas production efficiency is improved, the cable traversing device 8 is arranged, the electric power is provided for the drainage operation of the underground electric submersible pump and the screw pump, the gas production tree assembly 5 can provide the control of the channel and the gas production amount after the drainage operation is completed, and the high-efficiency and safe transportation of the produced gas is ensured. The invention effectively avoids the defect of non-concentric wellhead design, improves the efficiency of later operation, and can be matched with high-efficiency drainage gas production processes such as an electric submersible pump, a screw pump and the like to realize high-efficiency production of the gas well, and the structure and the performance are improved.
The wellhead device of the drainage and gas production double-pipe-column electric submersible pump can be further optimized or/and improved according to actual needs:
as shown in figure 1, the oil pipe head four-way joint device also comprises a water injection assembly 9, wherein two groups of water injection assemblies 9 fixedly communicated with the main channel are arranged at intervals along the circumference at the lower part of the oil pipe head four-way joint 1 corresponding to the lower parts of the left water discharge assembly 6 and the right water discharge assembly 7. In use, by providing the water injection assembly 9, annulus pressure detection can be performed, as well as water injection and well flushing operations.
As shown in fig. 1 to 5, the drainage pipe column hanger further comprises a positioning boss 12, a first positioning port 10 with an outward opening is arranged on the outer side of the lower end of the drainage pipe column hanger 3, a second positioning port 11 with an outward opening is arranged on the outer side of the lower end of the drainage pipe column hanger 2, and positioning bosses 12 which are respectively matched with the first positioning port 10 and the second positioning port 11 are connected in the first inner annular groove and the second inner annular groove corresponding to the positions of the first positioning port 10 and the second positioning port 11 through threads. When in use, the positions of the gas production pipe column hanger 3 and the drainage pipe column hanger 2 are positioned by arranging the positioning boss 12, and meanwhile, the rotation of the cable is prevented.
As shown in fig. 1, radial grease injection holes 13 and radial pressure relief holes 14 communicated with the main channel are circumferentially distributed on the outer side of the lower end of the tubing head four-way joint 1. When the oil layer casing is used, grease injection and pressure relief are carried out on the oil layer casing by arranging the radial grease injection holes 13 and the radial pressure relief holes 14.
As shown in fig. 1 to 5, the device further comprises an FS sealing ring 15 and an S sealing ring 16, the FS sealing ring 15 is fixedly installed at the inner ends of the radial grease injection hole 13 and the radial pressure release hole 14 respectively, a communication channel is arranged on the FS sealing ring 15 and is communicated with the radial grease injection hole 13 and the radial pressure release hole 14, and at least one S sealing ring 16 is arranged between the gas production pipe column hanger 3 and the drainage pipe column hanger 2 and the inner side of the main channel at the corresponding position at intervals up and down. When the drainage pipe sleeve is used, the main channel and the oil layer pipe sleeve are sealed through the FS sealing ring 15, and the gas production pipe sleeve hanger 3 and the drainage pipe sleeve hanger 2 are sealed with the main channel through the S sealing ring 16.
As shown in fig. 4, the back pressure valve screw thread 17 is arranged on the inner side of the upper part of the gas production pipe column hanger 3. When the back pressure valve is used, the back pressure valve thread 17 is arranged, so that the back pressure valve can be arranged in the gas production suspension and used for adjusting the pressure of the gas production, and the valve is opened for ventilation after the rated pressure is reached, so that the cutting-off and throttling effects are mainly achieved on the pipeline.
As shown in fig. 1, the drainage pipe column hanger further comprises a jackscrew 18, at least two internally and externally through threaded holes are uniformly distributed on the tubing head four-way joint 1 corresponding to the upper side of the tubing column hanger 3 along the circumference, jackscrews 18 with the inner ends propped against the upper side of the outer end of the tubing column hanger 3 are arranged in the threaded holes, at least two internally and externally through threaded holes are uniformly distributed on the tubing head four-way joint 1 corresponding to the upper side of the drainage pipe column hanger 2 along the circumference, and jackscrews 18 with the inner ends propped against the upper side of the outer end of the drainage pipe column hanger 2 are arranged in the threaded holes. When in use, the upper parts of the gas production pipe column hanger 3 and the drainage pipe column hanger 2 which are arranged at corresponding positions are fixed by the jackscrews 18, so that the upper parts of the gas production pipe column hanger and the drainage pipe column hanger are limited and tightly propped.
The technical characteristics form the optimal embodiment of the invention, have stronger adaptability and optimal implementation effect, and can increase or decrease unnecessary technical characteristics according to actual needs so as to meet the requirements of different situations.
Claims (10)
1. The utility model provides a drainage gas production double-pipe column electric submersible pump wellhead assembly, its characterized in that includes tubing head cross, drainage tubular column hanger, gas production tubular column hanger, tubing head reducing joint, gas production tree assembly, left drainage assembly, right drainage assembly and cable traversing device, tubing head cross middle part is equipped with the main passageway that link up from top to bottom, tubing head cross lower part is equipped with the cable passageway with main passageway intercommunication, be equipped with the cable traversing device in the cable passageway, tubing head cross middle part bilateral symmetry is equipped with left drainage assembly and right drainage assembly with main passageway intercommunication, the main passageway inboard of corresponding cable passageway top position is equipped with first inner ring groove and second inner ring groove from top to bottom in proper order, seat respectively in first inner ring groove and the second inner ring groove has gas production tubular column hanger, drainage tubular column hanger, gas production tree assembly is fixed to be linked together to gas production tubular column hanger upside.
2. The wellhead assembly of the double-pipe electric submersible pump according to claim 1, further comprising a water injection assembly, wherein two groups of water injection assemblies fixedly communicated with the main channel are arranged at intervals along the circumference at the lower part of the four-way pipe head corresponding to the positions below the left water discharge assembly and the right water discharge assembly.
3. The wellhead device of the drainage and gas production double-pipe-string electric submersible pump according to claim 1 or 2, further comprising a positioning boss, wherein a first positioning port with an outward opening is arranged on the outer side of the lower end of the gas production pipe string hanger, a second positioning port with an outward opening is arranged on the outer side of the lower end of the drainage pipe string hanger, and positioning bosses matched with the first positioning port and the second positioning port are respectively arranged in the first inner annular groove and the second inner annular groove which correspond to the positions of the first positioning port and the second positioning port through threaded connection.
4. The wellhead assembly of a drainage and gas production double-pipe string electric submersible pump according to claim 1 or 2, wherein radial grease injection holes and radial pressure relief holes communicated with the main channel are circumferentially distributed on the outer side of the lower end of the tubing head four-way.
5. The drainage and gas production double-pipe string electric submersible pump wellhead device of claim 3, wherein the outer side of the lower end of the tubing head four-way joint is circumferentially provided with radial grease injection holes and radial pressure relief holes communicated with the main channel.
6. The drainage and gas production double-pipe-string electric submersible pump wellhead device according to claim 4, further comprising an FS sealing ring and an S sealing ring, wherein the FS sealing ring is fixedly installed at the inner ends of the radial grease injection holes and the radial pressure relief holes respectively, a communication channel which is formed by communicating a main channel with the radial grease injection holes and the radial pressure relief holes is arranged on the FS sealing ring, and at least one S sealing ring is arranged between the gas production pipe string hanger and the drainage pipe string hanger and the inner side of the main channel at the corresponding position at intervals up and down.
7. The drainage and gas production double-pipe-string electric submersible pump wellhead device according to claim 3, further comprising an FS sealing ring and an S sealing ring, wherein the FS sealing ring is fixedly installed at the inner ends of the radial grease injection holes and the radial pressure relief holes respectively, a communication channel for communicating the main channel with the radial grease injection holes and the radial pressure relief holes is arranged on the FS sealing ring, and at least one S sealing ring is arranged between the gas production pipe string hanger and the drainage pipe string hanger and the inner side of the main channel at the corresponding position at intervals.
8. The drainage and production double-pipe string electric submersible pump wellhead device according to claim 1 or 2 or 5 or 6 or 7, wherein back pressure valve threads are arranged on the inner side of the upper part of the production pipe string hanger; or/and, the device further comprises jackscrews, at least two internally and externally through threaded holes are uniformly distributed on the tubing head four-way corresponding to the upper side position of the tubing string hanger along the circumference, jackscrews with the inner ends propped against the upper side of the outer end of the tubing string hanger are arranged in the threaded holes, at least two internally and externally through threaded holes are uniformly distributed on the tubing head four-way corresponding to the upper side position of the drainage string hanger along the circumference, and jackscrews with the inner ends propped against the upper side of the outer end of the drainage string hanger are arranged in the threaded holes.
9. The drainage and production double-pipe string electric submersible pump wellhead device according to claim 3, wherein the inner side of the upper part of the production pipe string hanger is provided with a back pressure valve thread; or/and, the device further comprises jackscrews, at least two internally and externally through threaded holes are uniformly distributed on the tubing head four-way corresponding to the upper side position of the tubing string hanger along the circumference, jackscrews with the inner ends propped against the upper side of the outer end of the tubing string hanger are arranged in the threaded holes, at least two internally and externally through threaded holes are uniformly distributed on the tubing head four-way corresponding to the upper side position of the drainage string hanger along the circumference, and jackscrews with the inner ends propped against the upper side of the outer end of the drainage string hanger are arranged in the threaded holes.
10. The drainage and gas production double-pipe-string electric submersible pump wellhead device according to claim 4, wherein back pressure valve threads are arranged on the inner side of the upper part of the gas production pipe string hanger; or/and, the device further comprises jackscrews, at least two internally and externally through threaded holes are uniformly distributed on the tubing head four-way corresponding to the upper side position of the tubing string hanger along the circumference, jackscrews with the inner ends propped against the upper side of the outer end of the tubing string hanger are arranged in the threaded holes, at least two internally and externally through threaded holes are uniformly distributed on the tubing head four-way corresponding to the upper side position of the drainage string hanger along the circumference, and jackscrews with the inner ends propped against the upper side of the outer end of the drainage string hanger are arranged in the threaded holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111250265.3A CN116025302A (en) | 2021-10-26 | 2021-10-26 | Drainage gas production double-pipe-column electric submersible pump wellhead device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111250265.3A CN116025302A (en) | 2021-10-26 | 2021-10-26 | Drainage gas production double-pipe-column electric submersible pump wellhead device |
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| Publication Number | Publication Date |
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| CN116025302A true CN116025302A (en) | 2023-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111250265.3A Pending CN116025302A (en) | 2021-10-26 | 2021-10-26 | Drainage gas production double-pipe-column electric submersible pump wellhead device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009102601A2 (en) * | 2008-02-11 | 2009-08-20 | Cameron International Corporation | Angled-penetrator device and system |
| CN201650191U (en) * | 2010-04-30 | 2010-11-24 | 什邡慧丰采油机械有限责任公司 | Gas production wellhead assembly of high-pressure electric submersible pump |
| CN103089187A (en) * | 2012-12-26 | 2013-05-08 | 江苏宏泰石化机械有限公司 | Well head device with combined sealing, double-tube gas injection and remote control |
| US20140238693A1 (en) * | 2013-02-26 | 2014-08-28 | Ge Oil & Gas Pressure Control Lp | Wellhead system for tieback retrieval |
| CN106522894A (en) * | 2017-01-06 | 2017-03-22 | 盐城华亚石油机械制造有限公司 | Multifunctional integrated operation device specially used for coalbed methane |
-
2021
- 2021-10-26 CN CN202111250265.3A patent/CN116025302A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009102601A2 (en) * | 2008-02-11 | 2009-08-20 | Cameron International Corporation | Angled-penetrator device and system |
| US20100294481A1 (en) * | 2008-02-11 | 2010-11-25 | Cameron International Corporation | Angled-penetrator device and system |
| CN201650191U (en) * | 2010-04-30 | 2010-11-24 | 什邡慧丰采油机械有限责任公司 | Gas production wellhead assembly of high-pressure electric submersible pump |
| CN103089187A (en) * | 2012-12-26 | 2013-05-08 | 江苏宏泰石化机械有限公司 | Well head device with combined sealing, double-tube gas injection and remote control |
| US20140238693A1 (en) * | 2013-02-26 | 2014-08-28 | Ge Oil & Gas Pressure Control Lp | Wellhead system for tieback retrieval |
| CN106522894A (en) * | 2017-01-06 | 2017-03-22 | 盐城华亚石油机械制造有限公司 | Multifunctional integrated operation device specially used for coalbed methane |
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