CN109458153B - Christmas tree device suitable for permanently placing and hanging coiled tubing production - Google Patents
Christmas tree device suitable for permanently placing and hanging coiled tubing production Download PDFInfo
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- CN109458153B CN109458153B CN201811453971.6A CN201811453971A CN109458153B CN 109458153 B CN109458153 B CN 109458153B CN 201811453971 A CN201811453971 A CN 201811453971A CN 109458153 B CN109458153 B CN 109458153B
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- 241000191291 Abies alba Species 0.000 title claims abstract description 61
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- 238000007789 sealing Methods 0.000 claims abstract description 54
- 239000002184 metal Substances 0.000 claims description 38
- 238000003825 pressing Methods 0.000 claims description 8
- 230000007246 mechanism Effects 0.000 claims description 7
- 239000000725 suspension Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 8
- 238000007689 inspection Methods 0.000 description 7
- 210000000664 rectum Anatomy 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 210000000078 claw Anatomy 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000002595 cold damage Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/04—Casing heads; Suspending casings or tubings in well heads
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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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/04—Casing heads; Suspending casings or tubings in well heads
- E21B33/0422—Casing heads; Suspending casings or tubings in well heads a suspended tubing or casing being gripped by a slip or an internally serrated member
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- Engineering & Computer Science (AREA)
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- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a Christmas tree device suitable for permanently producing a suspended continuous oil pipe, which comprises a Christmas tree body, wherein a side hole is formed in the middle of the Christmas tree body, a main valve and a wing valve combined device are connected outside the side hole, a large-drift-diameter tubing hanger is suspended in the Christmas tree body, the side hole of the large-drift-diameter tubing hanger is communicated with the side hole of the Christmas tree body, a top plug is arranged at the upper part of the middle of the Christmas tree body and locked through a locking block, the lower part of the top plug is connected with a continuous oil pipe suspension sealing device, an oil production tree cap is arranged at the top of the Christmas tree body to guarantee top sealing and protection, and the. The side holes of the Christmas tree body and the large-drift-diameter tubing hanger ensure normal production after the coiled tubing is hung, the internal and external multi-layer sealing structure of the top blanking plug ensures the sealing requirement in the production process, and the coiled tubing hanging and sealing device ensures the hanging stability and the sealing reliability of the coiled tubing.
Description
Technical Field
The invention relates to a Christmas tree device, in particular to a Christmas tree device suitable for permanently suspending a continuous oil pipe for production.
Background
The coiled tubing is used as an important tool in oilfield production, and is widely applied in the technical directions of sidetrack drilling, testing, well workover, oil extraction, gas production and the like of the oilfield, wherein the coiled tubing needs to be hung on a wellhead permanently in the underground ultrasonic permanently-arranged tool unblocking, small-diameter pipe liquid drainage and gas production, coiled tubing throwing and fishing electric pumps without workover rig platforms and the like.
The main operation means of the workover rig-free platform is to adopt a workover ship, a drilling ship or a workover rig to move to carry out workover, the workover ship, the drilling ship and the workover rig are used for a workover rig-free platform inspection pump to move, the preparation time of frequent workover rig moving operation is long, the cost is high, the equipment loss is large, the performance of tools such as an external sand control pipe column sealing working barrel, a sleeve pipe, a hanger and the like is reduced or even loses efficacy when the pipe column is lifted, and the problems of oil layer pollution, cold damage, scaling, reservoir pollution and the like caused by external solid particles are often generated in the process of flushing and killing a well.
The pump operation can be efficiently and quickly finished without using a workover rig and an operation ship by utilizing the operation of the coiled tubing throwing and dragging electric pump, the operation process is simple and safe, the steps of detaching a Christmas tree, lifting a production pipe column, lowering the production pipe column, installing the Christmas tree, setting a cable packer and the like are reduced, the performance reduction of a sand prevention pipe column caused by lifting the pipe column is avoided, the pollution and the injury of an oil layer are reduced, and the pump operation procedure is simplified.
For the blockage removal of an underground ultrasonic permanent tool, liquid drainage and gas production of a small-diameter pipe and electric pump throwing and fishing of a continuous oil pipe, the continuous oil pipe needs to be hung on a wellhead for a long time for production, the continuous oil pipe penetrates through an oil production channel in the production process to prevent the functions of a main valve and a paraffin removal valve of a conventional production tree from being realized, and the problems of long-term hanging and unreliable sealing of the wellhead hung by the continuous oil pipe exist.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a Christmas tree device for producing a suspended continuous oil pipe.
The purpose of the invention is realized by the following technical scheme:
the invention relates to a Christmas tree device suitable for permanently hanging a continuous oil pipe, which comprises a Christmas tree body with a step through hole in the middle, wherein the step through hole is provided with two steps and comprises an upper through hole, a middle through hole and a lower through hole which are sequentially arranged from top to bottom;
the bottom wall of the upper body of the top plug with a U-shaped longitudinal section is supported on the annular bottom wall of the upper through hole, a side wall hole is formed in the side wall of the upper body of the top plug, a locking block is arranged in the side wall hole, a clamping groove is formed in the Christmas tree body at the position corresponding to the side wall hole, a locking tool is arranged in the cavity of the upper body of the top plug, the locking block is pressed into the clamping groove of the Christmas tree body under the pushing of the locking tool, the bottom of the upper body of the top plug is connected with the lower body of the top plug through a bolt, a lower hanger clamping jaw is arranged in the lower cavity of the top plug, and hanger mounting holes which are coaxial with the mounting holes are respectively formed in the upper body of the top plug, the lower body of the top plug and the lower hanger clamping jaw, a continuous oil pipe penetrates through the mounting hole and the hanger mounting hole along the vertical direction, and an upper pressure ring and an upper metal sealing block are arranged between the continuous oil pipe and the mounting hole in the middle of the oil production tree cap from top to bottom;
the hanger mounting hole at the upper body position of the top plug is a stepped hole, the upper hanger clamping jaw is arranged in the upper hole of the stepped hole and clamps the coiled tubing, a hanger jacket is sleeved outside the upper hanger clamping jaw, the bottom of the hanger jacket is supported on the step of the stepped hole, a pressing cap and a top elastic seal are sequentially arranged between the coiled tubing and the upper hole of the stepped hole above the hanger outer sleeve from top to bottom, an upper metal sealing block, a metal sealing compression ring, a locking mechanism and a lower hanger outer sleeve are sequentially arranged between the inner wall of the lower hole of the stepped hole, the inner wall of the hanger mounting hole at the position of the lower body of the top plug and the inner wall of the hanger mounting hole at the position of the lower hanger jaw and the outer wall of the coiled tubing from top to bottom, a lower metal sealing block is arranged at the upper part between the inner wall of the hanger mounting hole at the position of the lower hanger jaw and the outer wall of the coiled tubing;
the large-drift-diameter tubing hanger is arranged in the middle through hole and the lower through hole and supported on the annular bottom wall of the middle through hole through a shoulder on the outer wall of the lower part of the large-drift-diameter tubing hanger, the outer wall of the large-drift-diameter tubing hanger and the inner wall of the middle through hole are in elastic sealing connection through a plurality of tubing hangers, a tubing hanger metal sealing block is arranged between the outer wall of the bottom of the large-drift-diameter tubing hanger and the inner wall of the middle through hole, and the tubing hanger metal sealing block is locked and fixed on the Christmas tree body through a jackscrew;
the lateral wall of the Christmas tree body is provided with a tubing hanger seal testing channel and a first hydraulic control pipeline channel, the outlet of the tubing hanger is opposite to the outer wall of the large-drift-diameter tubing hanger, the bottom wall of the large-drift-diameter tubing hanger is provided with a second hydraulic control pipeline channel, a downhole hydraulic control pipeline is connected into the second hydraulic control pipeline channel, and the bottom of the Christmas tree body is fixedly connected with a wellhead cross joint through a bolt hole.
The invention has the advantages that:
the invention is suitable for the offshore quick pump inspection operation without a workover rig platform, simplifies the pump inspection process, obviously improves the pump inspection operation efficiency compared with the conventional pump inspection operation, can realize the pump inspection without well killing operation by combining the underground deep well safety valve, reduces the pollution of the workover to the stratum, realizes the quick recovery of the oil well, and can realize the quick and simple pump inspection and the disassembly and assembly of wellhead equipment.
Drawings
Fig. 1 is a schematic structural diagram of a christmas tree device suitable for permanently suspending coiled tubing production according to the present invention.
Fig. 2 is a schematic structural diagram of a christmas tree body.
Detailed Description
In order to make the technical scheme of the invention clearer, the invention is further described in detail with reference to the accompanying drawings. The embodiments of the present invention are as follows.
The device for producing the Christmas tree by hanging the continuous oil pipe comprises a Christmas tree body 5 with a step through hole in the middle, wherein the step through hole is provided with two steps comprising an upper through hole, a middle through hole and a lower through hole which are sequentially arranged from top to bottom, and the diameters of the upper through hole, the middle through hole and the lower through hole are sequentially reduced. The top of the Christmas tree body 5 is fixed with a Christmas tree cap 3 through a bolt, and a mounting hole is arranged in the middle of the Christmas tree cap 3.
The bottom wall of an upper top plug body 12-1 with a U-shaped longitudinal section is supported on the annular bottom wall of the upper through hole, and the space between the outer wall of the lower part of the upper top plug body 12-1 and the inner wall of the upper through hole is sealed by an elastic plug seal 8-2 and a metal plug seal block 11-1 which are arranged up and down. The side wall of the upper body 12-1 of the top blanking plug is provided with a side wall hole, a lock block 6 is arranged in the side wall hole, a clamping groove is arranged on the Christmas tree body 5 at the position corresponding to the side wall hole, a locking tool 4 is arranged in the cavity of the upper body 12-1 of the top blanking plug, the lock block 6 is pressed into the clamping groove of the Christmas tree body 5 under the pushing of the locking tool 4, the bottom of the upper body 12-1 of the top blanking plug is connected with the lower body 12-2 of the top blanking plug through a bolt, a lower hanger claw 22 is arranged in the inner cavity of the lower body 12-2 of the top blanking plug, and hanger mounting holes which are coaxial with the mounting holes are respectively arranged in the upper body 12-1 of the top blanking plug, the lower body 12-2 of the top blanking plug and the lower hanger claw 22.
And a continuous oil pipe 1 penetrates through the mounting hole and the hanger mounting hole along the vertical direction. And an upper compression ring 2 and an upper metal sealing block 11-5 are arranged between the continuous oil pipe 1 and the mounting hole in the middle of the oil production tree cap 3 from top to bottom.
The hanger mounting hole at the position of the upper body 12-1 of the top blanking plug is a stepped hole, an upper hanger clamping jaw 9 is mounted in the upper hole of the stepped hole and clamps the coiled tubing 1, a hanger outer sleeve 10 is sleeved outside the upper hanger clamping jaw 9, the bottom of the hanger outer sleeve 10 is supported on the step of the stepped hole, and a pressure cap 7 and a top elastic seal 8-1 are sequentially mounted between the coiled tubing 1 and the upper hole of the stepped hole above the hanger outer sleeve 10 from top to bottom. An upper metal sealing block 11-2, a metal sealing clamp ring 19, a locking mechanism 20 and a lower hanger outer sleeve 21 are sequentially arranged between the inner wall of the lower hole of the stepped hole, the inner wall of the hanger mounting hole at the position of the lower body 12-2 of the top plug and the inner wall of the hanger mounting hole at the position of the lower hanger jaw 22 and the outer wall of the coiled tubing 1 from top to bottom. And a lower metal sealing block 11-4 is arranged at the upper part between the inner wall of the hanger mounting hole at the position of the lower hanger jaw 22 and the outer wall of the coiled tubing 1.
The lower hanger jaw 22, the upper hanger jaw 9, the hanger outer sleeve 10, the locking mechanism 20 and the lower hanger outer sleeve 21 all adopt the existing structure, and the structure disclosed in the application No. 201420667736.X can be specifically referred to.
The upper body 12-1 of the top plug and the lower body 12-2 of the top plug are connected through bolts, and an upper metal sealing block 11-2, a metal sealing pressing ring 19, a locking mechanism 20, a lower hanger outer sleeve 21 and a lower hanger jaw 22 of the coiled tubing are positioned.
The coiled tubing 1 is suspended through the upper hanger jaw 9, the coiled tubing 1 is prevented from moving in the upper jacking mode in the production process through the lower hanger jaw 22, and the coiled tubing 1 is sealed with the top plug 12 through the elastic seal 8-1, the upper metal seal block 11-2, the lower metal seal block 11-4 and the metal seal pressing ring 23.
The large-drift-diameter tubing hanger 25 is arranged in the middle through hole and the lower through hole and is supported on the annular bottom wall of the middle through hole through a shoulder on the outer wall of the lower part of the large-drift-diameter tubing hanger, the outer wall of the large-drift-diameter tubing hanger 25 is in sealing connection with the inner wall of the middle through hole through a plurality of tubing hanger elastic seals 8-3, and a tubing hanger metal sealing block 11-3 is arranged between the outer wall of the bottom of the large-drift-diameter tubing hanger 25 and the inner wall of the middle through hole, the tubing hanger metal sealing block 11-3 is locked and fixed on the Christmas tree body 5 through a jackscrew, metal sealing between the Christmas tree body is realized, and auxiliary sealing and oil outlet channel communicating and sealing are realized through the plurality of elastic seals 8. The bottom pipe inner wall of the large-drift-diameter oil pipe hanger 25 is in threaded connection with the external thread on the top of one oil pipe 18 through internal threads.
A main valve and a wing valve are not arranged in a middle hole of the Christmas tree body 5, the through path of the middle hole of the Christmas tree body is guaranteed to be free from obstruction, a main valve 15 and wing valve 16 combination device is arranged on the side face of the Christmas tree body 5, an oil outlet channel 17 is arranged in the middle of the Christmas tree body, the oil outlet channel 17 is communicated with the main valve 15 and wing valve 16 combination device, and the Christmas tree is opened and closed through opening and closing the main valve 15 and the wing valve 16. Establish the side opening in the middle of big latus rectum tubing hanger 25, the side opening and the oil outlet channel 17 intercommunication of christmas tree body 5, establish the recess in big latus rectum tubing hanger 25 outer wall top, realize the location locking of big latus rectum tubing hanger 25 and christmas tree body 5 through the jackscrew 14 that inserts the recess the lateral wall of christmas tree body 5 on open and to have export and the relative tubing hanger of setting up of big latus rectum tubing hanger 25 outer wall to test and seal passageway 24 and a hydraulic control pipeline passageway 26, test through tubing hanger and seal the passageway 24 and beat to press the sealed condition of hanging of big latus rectum tubing hanger 25 and test and seal. A second hydraulic control pipeline channel is arranged on the bottom wall of the large-drift-diameter tubing hanger 25, the underground hydraulic control pipeline is connected into the second hydraulic control pipeline channel 26, and hydraulic control of the underground tool is realized through the hydraulic control pipeline channel 26. The hydraulic control pipeline access method and the hydraulic control pipeline access structure are only required to adopt the existing method and structure.
The bottom of the Christmas tree body 5 is fixedly connected with the four-way joint of the wellhead through the bolt hole 27-2.
The installation and use method of the device is as follows:
referring to the attached drawings 1 and 2, a Christmas tree body 5 suitable for permanently suspending coiled tubing production is installed on an original wellhead, a large-drift-diameter tubing hanger 25 is put into the interior of the Christmas tree body 5, the large-drift-diameter tubing hanger 25 is sealed with the Christmas tree body 5 through tubing hanger metal seals 11-3, hydraulic control of hydraulic control pipelines is achieved through hydraulic control pipeline channels 26, through holes in the side wall of the large-drift-diameter tubing hanger 25 are communicated with a channel of a main valve 15 and a wing valve 16 combination device on the Christmas tree body 5, underground fluid production is achieved, sealing of sealing surfaces of the large-drift-diameter tubing hanger 25 and the Christmas tree body 5 is achieved through multi-channel elastic sealing, sealing of the sealing conditions is tested through a tubing hanger sealing channel 24, and the large-drift-diameter tubing hanger 25 is locked and fixed through a jackscrew 14.
The coiled tubing 1 is integrally installed on the top plug at the ground, and the specific operation method is as follows: according to the sequence shown in the attached figure 1, a lower body 12-2 of the top blanking plug, a metal sealing clamp ring 23, a lower metal sealing block 11-4, a lower hanger claw 22, a lower hanger outer sleeve 21, a locking mechanism 20, a metal sealing clamp ring 19, an upper metal sealing block 11-2, an upper body 12-1 of the top blanking plug, an upper hanger claw 9, an upper hanger outer sleeve 10, a top elastic seal 8-1 and a press cap 7 are respectively sleeved into a continuous oil pipe 1 from top to bottom, the metal sealing block 11-2 is locked by the locking mechanism 20 and the metal sealing compression ring 19, the connection of the upper part and the lower part is realized through bolts between the upper part and the lower part of the top blanking plug, the top elastic seal 8-1 is locked through the pressing cap 7 and the upper hanger outer sleeve 10 is pressed tightly, the suspension and the upper seal of the continuous oil pipe 1 are realized, and the lower metal sealing block 11-4 is locked by the metal sealing compaction 23 to realize the lower sealing of the coiled tubing 1.
The top plug with the coiled tubing 1 is put into the Christmas tree body 5, after the top plug is put in place, the locking tool 4 is put in to clamp the locking block 6 into the inner side wall of the Christmas tree body 5, and the metal sealing block 11-1 of the plug is locked to realize locking and sealing of the top plug and the Christmas tree body 5.
The oil extraction tree cap 3 penetrates through the continuous oil pipe 1 and is fixedly connected with the oil extraction tree body through bolts, the upper metal sealing block and the upper pressing ring 2 are sleeved from top to bottom, and the upper metal sealing block for sealing is locked through the upper pressing ring 2.
The foregoing is a more detailed description of the invention and it is not intended that the invention be limited to the specific embodiments described herein, but that various modifications, additions and substitutions may be made by those skilled in the art without departing from the spirit of the invention.
Claims (1)
1. The utility model provides a production tree device suitable for put production of hanging coiled tubing forever which characterized in that: the tree comprises a Christmas tree body (5) with a step through hole in the middle, wherein the step through hole is provided with two steps and comprises an upper through hole, a middle through hole and a lower through hole which are sequentially arranged from top to bottom, the diameters of the upper through hole, the middle through hole and the lower through hole are sequentially reduced, an oil production tree cap (3) is fixed at the top of the Christmas tree body through bolts, and a mounting hole is formed in the middle of the oil production tree cap;
the bottom wall of an upper top plug body (12-1) with a U-shaped longitudinal section is supported on the annular bottom wall of an upper through hole, a space between the outer wall of the lower part of the upper top plug body and the inner wall of the upper through hole is sealed by a plug elastic seal (8-2) and a plug metal seal block (11-1) which are arranged up and down, the side wall of the upper top plug body is provided with a side wall hole, a lock block (6) is arranged in the side wall hole, a clamping groove is arranged on the Christmas tree body corresponding to the side wall hole, a locking tool (4) is arranged in a cavity of the upper top plug body, the lock block is pressed into the clamping groove of the Christmas tree body under the pushing of the locking tool (4), the bottom of the upper top plug body is connected with the lower top plug body (12-2) through a bolt, and a lower hanger clamping jaw (22) is arranged in the inner cavity of the lower top plug body, hanger mounting holes which are coaxial with the mounting holes are respectively formed in the top plug upper body, the top plug lower body and the lower hanger clamping jaws, a coiled tubing (1) penetrates through the mounting holes and the hanger mounting holes along the vertical direction, and an upper pressure ring (2) and an upper metal sealing block (11-5) are arranged between the coiled tubing and the mounting hole in the middle of the oil production tree cap (3) from top to bottom;
the hanger mounting hole at the upper body position of the top plug is a stepped hole, an upper hanger clamping jaw (9) is mounted in the upper hole of the stepped hole and is used for clamping a coiled tubing, a hanger outer sleeve is sleeved outside the upper hanger clamping jaw, the bottom of the hanger outer sleeve is supported on the step of the stepped hole, a pressing cap (7) and a top elastic seal (8-1) are sequentially mounted between the coiled tubing and the upper hole of the stepped hole above the hanger outer sleeve from top to bottom, and an upper metal sealing block (11-2), a metal sealing pressing ring (19), a locking mechanism (20) and a lower hanger outer sleeve (21) are sequentially mounted between the lower hole inner wall of the stepped hole, the inner wall of the hanger mounting hole at the lower body position of the top plug and the inner wall of the hanger mounting hole at the lower hanger clamping jaw position and the outer wall of the coiled tubing from top to bottom, a lower metal sealing block (11-4) is arranged at the upper part between the inner wall of the hanger mounting hole at the position of the lower hanger jaw and the outer wall of the coiled tubing;
the large-drift-diameter tubing hanger (25) is installed in the middle through hole and the lower through hole and supported on the annular bottom wall of the middle through hole through a shoulder on the outer wall of the lower part of the large-drift-diameter tubing hanger, the outer wall of the large-drift-diameter tubing hanger and the inner wall of the middle through hole are in sealing connection through a plurality of tubing hanger elastic seals (8-3), a tubing hanger metal sealing block (11-3) is arranged between the outer wall of the bottom of the large-drift-diameter tubing hanger and the inner wall of the middle through hole, and the tubing hanger metal sealing block is locked and fixed on the Christmas tree body through a jackscrew;
a main valve (15) and wing valve (16) combination device is arranged on the side surface of the Christmas tree body, an oil outlet channel (17) is arranged in the middle of the Christmas tree body, the oil outlet channel is communicated with the main valve and wing valve combined device, a side hole is arranged in the middle of the large-drift-diameter tubing hanger, the side hole is communicated with an oil outlet channel of the Christmas tree body, a groove is arranged above the outer wall of the large-drift-diameter tubing hanger, the positioning and locking of the large-drift-diameter tubing hanger and the Christmas tree body are realized through a jackscrew inserted into the groove, a tubing hanger seal checking passage (24) with an outlet opposite to the outer wall of the large-drift-diameter tubing hanger and a first hydraulic control pipeline passage (26) are arranged on the side wall of the Christmas tree body, and a second hydraulic control pipeline channel is formed in the bottom wall of the large-drift-diameter tubing hanger, the underground hydraulic control pipeline is connected into the second hydraulic control pipeline channel, and the bottom of the Christmas tree body is fixedly connected with the wellhead four-way through a bolt hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811453971.6A CN109458153B (en) | 2018-11-30 | 2018-11-30 | Christmas tree device suitable for permanently placing and hanging coiled tubing production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811453971.6A CN109458153B (en) | 2018-11-30 | 2018-11-30 | Christmas tree device suitable for permanently placing and hanging coiled tubing production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109458153A CN109458153A (en) | 2019-03-12 |
| CN109458153B true CN109458153B (en) | 2020-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811453971.6A Active CN109458153B (en) | 2018-11-30 | 2018-11-30 | Christmas tree device suitable for permanently placing and hanging coiled tubing production |
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| CN (1) | CN109458153B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927374B (en) * | 2020-09-09 | 2022-11-29 | 中国石油天然气集团有限公司 | Continuous oil pipe wellhead suspension sealing device |
| CN115142809B (en) * | 2021-03-31 | 2024-06-11 | 派格水下技术(广州)有限公司 | Multi-well interconnected low pressure wellhead system for drilling base plate |
| CN113898310A (en) * | 2021-10-18 | 2022-01-07 | 北京中海沃邦能源投资有限公司石楼分公司 | Suspension device for coiled tubing |
| CN116446817B (en) * | 2023-06-20 | 2023-08-25 | 什邡慧丰采油机械有限责任公司 | Single-cylinder double-well wellhead device for efficiently producing oil and gas and working method thereof |
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| US9784063B2 (en) * | 2012-08-17 | 2017-10-10 | Onesubsea Ip Uk Limited | Subsea production system with downhole equipment suspension system |
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2018
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| CN109458153A (en) | 2019-03-12 |
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