CN202745789U - Wellhead double-sealing continuous oil pipe suspension device - Google Patents
Wellhead double-sealing continuous oil pipe suspension device Download PDFInfo
- Publication number
- CN202745789U CN202745789U CN 201220338004 CN201220338004U CN202745789U CN 202745789 U CN202745789 U CN 202745789U CN 201220338004 CN201220338004 CN 201220338004 CN 201220338004 U CN201220338004 U CN 201220338004U CN 202745789 U CN202745789 U CN 202745789U
- Authority
- CN
- China
- Prior art keywords
- hanger
- coiled tubing
- sealed
- flange
- packing element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000725 suspension Substances 0.000 title claims description 7
- 238000007789 sealing Methods 0.000 title abstract description 7
- 238000012856 packing Methods 0.000 claims abstract description 10
- 238000002347 injection Methods 0.000 claims abstract description 6
- 239000007924 injection Substances 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 5
- 239000012530 fluid Substances 0.000 abstract description 3
- 230000007774 longterm Effects 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 abstract 4
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 238000005728 strengthening Methods 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 241000521257 Hydrops Species 0.000 description 2
- 206010030113 Oedema Diseases 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 241000191291 Abies alba Species 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
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- Gasket Seals (AREA)
Abstract
The utility model discloses a well head double sealing coiled tubing linkage, it is sealed for strengthening coiled tubing, satisfy the requirement to drainage gas production and snubbing serving and design, mainly including establishing at the downthehole upper seal packing element of conversion flange center hole enlargement, this internal radial injection side opening of conversion flange, connect the fastening bolt of conversion flange and hanger, establish at the downthehole fan-shaped slips of hanger center hole enlargement, go up the taper sleeve, lower seal packing element and lower taper sleeve and establish seat seal jackscrew etc. in the downthehole radial side of hanger body. The utility model discloses a double seal technology, through seat sealing jackscrew compression last toper cover and lower sealed packing element realize first heavy sealed, realize the second heavy sealed through radially injecting into sealed fat into the curb hole to the conversion flange, make continuous oil pipe's long-term sealed effect can show and strengthen. When the gas-liquid two-phase fluid passes through the device, the fluid cannot overflow from the hanger and the reducing flange, and the requirements of drainage gas production and snubbing operation in the production process of adopting the continuous oil pipe are met.
Description
Technical field
The utility model relates to a kind of well head double seal coiled tubing suspension arrangement, belongs to gas well drainage gas recovery field.
Background technology
Along with continuing of gas well production time, gas well deliverability reduces gradually, be lower than critical when taking flow velocity the shaft bottom begin hydrops, if untimelyly take the discharge opeing measure, can make gas well water logging or stopping production.Take the flow quantity theory based on pit shaft two phase flow and minimum, the coiled tubing of installing than pipe with small pipe diameter at pit shaft can reduce the critical flow velocity of taking to a certain extent, increases gas flow rate in the pit shaft, thereby improves the gas well fluid-carrying capability, therefore adopts not kill-job technology, directly 2
7/
8Plain tubing in be lowered to 1
1/
2Coiled tubing as flow string, to get rid of the shaft bottom hydrops.
How making the coiled tubing long term seal be suspended on well gas production wellhead is one of key of coiled tubing water drainage-gas recovery technology success or failure.
Summary of the invention
The purpose of this utility model is to provide a kind of well head double seal coiled tubing suspension arrangement, when it can satisfy adopt coiled tubing to produce by double seal technique to the requirement of water pumping gas production and snubbing serving.
Concrete technical scheme of the present utility model is as follows:
The crossover flange center is provided with cartridge in the hole enlargement hole, is provided with the radially injection side opening in hole enlargement hole, connection center in the crossover flange body, and crossover flange connects hanger by fastening bolt.Connect successively fan-shaped slips, upper conical cover, lower seal packing element and inferior pyramidal cover in the hole enlargement hole, hanger center, be provided with the radially side opening in hole enlargement hole, connection center in the hanger body, radially be provided with the setting jackscrew of the upper conical cover of contact in the side opening.Coiled tubing is applied in the centre bore of crossover flange and hanger.
The utility model adopts double seal technique, compress upper conical cover and the lower seal packing element is realized the first resealing by setting jackscrew, realize the second resealing by radially inject side opening injection stop-leak compound to crossover flange, make the long term seal effect of coiled tubing be able to remarkable reinforcement.When gas-liquid two-phase fluid by this when device, can between hanger and adapter flange, not overflow, satisfy when adopting coiled tubing to produce the requirement to water pumping gas production and snubbing serving.
Description of drawings
Fig. 1 is well head double seal coiled tubing suspension arrangement structural representation.
The specific embodiment
With reference to Fig. 1 embodiment of the present utility model is further specified:
Embodiment:
Well head double seal coiled tubing suspension arrangement by crossover flange 1, upper cartridge 2, fastening bolt 3, radially inject side opening 4, fan-shaped slips 5, setting jackscrew 6, upper conical cover 7, lower seal packing element 8, inferior pyramidal cover 9 and hanger 10 and form:
Crossover flange is provided with cartridge 2 in the 1 lower central hole enlargement hole, is provided with the radially injection side opening 4 that is communicated with lower central hole enlargement hole in crossover flange 1 lower body, and crossover flange 1 connects hanger 10 by fastening bolt 3.Connect successively fan-shaped slips 5, upper conical cover 7, lower seal packing element 8 and inferior pyramidal cover 9 in the hanger 10 central upper portion hole enlargement holes, be provided with the radially side opening that is communicated with central upper portion hole enlargement hole in hanger 10 upper body, be provided with the setting jackscrew 6 of the upper conical cover 7 of contact in the radial direction through hole.Coiled tubing 11 is applied in the centre bore of crossover flange 1 and hanger 10.
The utility model is mainly by hanging and the sealing technology realization:
1. the coiled tubing well head hangs and the first resealing
During field operation, at the well head main control valve hanger 10 is installed first, again successively fitting operation window, blowout preventer and injection head device, utilize coiled tubing work vehicle that coiled tubing 11 is lowered to designated depth, rotation seat bind the silk 6, promote upper conical cover 7 and move down and force in lower seal packing element 8, make lower seal packing element 8 compressive deformations, thus sealing coiled tubing 11.Whether good by operation window upper pressure table check sealing, if in the gauge hand 20 minutes all without showing, show that the first resealing is good, this moment, the opening operation window dropped into fan-shaped slips 5, hang coiled tubing 11, then use blowout preventer to cut off coiled tubing 11, dismounting hanger all parts more than 10 are finished coiled tubing and are hung and the first resealing operation.
2, coiled tubing well head the second resealing
Coiled tubing 11 after cutting off is passed crossover flange 1 centre bore, crossover flange 1 is installed in hanger 10 tops, evenly tighten four fastening bolts 3, cartridge 2 compressive deformations are held coiled tubing 11 tightly on this moment.Afterwards, inject stop-leak compound to radially injecting side opening 4, utilize the coiled tubing work vehicle air pump to purge gently and radially inject side opening 4, make stop-leak compound and upper cartridge 2 inwall even contact, so far finish the second resealing between cartridge 2 and the coiled tubing 11.
The effect of hanger 10 is to hang and sealing coiled tubing 11, and the effect of crossover flange 1 is reducing, docks with christmas tree KQ65-70 type valve with convenient, also has the auxiliary seal effect simultaneously concurrently.When being lowered to coiled tubing 11, can adopt the annular space production between original oil pipe and the coiled tubing 11, need not closing well, the situation that the pit shaft internal pressure raises, lower pipe resistance increases that can avoid closing well to cause occurs.
Claims (1)
1. well head double seal coiled tubing suspension arrangement is characterized in that:
Crossover flange (1) center is provided with cartridge (2) in the hole enlargement hole, be provided with the radially injection side opening (4) in hole enlargement hole, connection center in crossover flange (1) body, crossover flange (1) connects hanger (10) by fastening bolt (3); Connect successively fan-shaped slips (5), upper conical cover (7), lower seal packing element (8) and inferior pyramidal cover (9) in the hole enlargement hole, hanger (10) center, be provided with the radially side opening in hole enlargement hole, connection center in hanger (10) body, radially be provided with the setting jackscrew (6) of the upper conical cover of contact (7) in the side opening; Coiled tubing (11) is applied in the centre bore of crossover flange (1) and hanger (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220338004 CN202745789U (en) | 2012-07-12 | 2012-07-12 | Wellhead double-sealing continuous oil pipe suspension device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220338004 CN202745789U (en) | 2012-07-12 | 2012-07-12 | Wellhead double-sealing continuous oil pipe suspension device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202745789U true CN202745789U (en) | 2013-02-20 |
Family
ID=47705206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220338004 Expired - Lifetime CN202745789U (en) | 2012-07-12 | 2012-07-12 | Wellhead double-sealing continuous oil pipe suspension device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202745789U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790542A (en) * | 2013-09-13 | 2014-05-14 | 中国石油天然气股份有限公司 | Coiled tubing suspension sealing device for testing under high-temperature belt pressure and using method |
| CN104018796A (en) * | 2014-06-16 | 2014-09-03 | 北京奥瑞安能源技术开发有限公司 | Method for suspending speed tubular column of continuous oil tube |
| CN109458153A (en) * | 2018-11-30 | 2019-03-12 | 中国海洋石油集团有限公司 | A kind of oil recovery tree device suitable for setting suspension coiled tubing production forever |
| CN109538153A (en) * | 2019-01-21 | 2019-03-29 | 杰瑞能源服务有限公司 | A kind of Concentric Coiled Tubing hanger |
| CN111364936A (en) * | 2020-04-09 | 2020-07-03 | 中国石油天然气股份有限公司 | Speed tubular column sealing suspension device with auxiliary sealing and sealing method |
| CN112253021A (en) * | 2020-11-25 | 2021-01-22 | 中国石油天然气集团有限公司 | Liner hanger and anti-abrasion sealing structure thereof |
-
2012
- 2012-07-12 CN CN 201220338004 patent/CN202745789U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790542A (en) * | 2013-09-13 | 2014-05-14 | 中国石油天然气股份有限公司 | Coiled tubing suspension sealing device for testing under high-temperature belt pressure and using method |
| CN104018796A (en) * | 2014-06-16 | 2014-09-03 | 北京奥瑞安能源技术开发有限公司 | Method for suspending speed tubular column of continuous oil tube |
| CN104018796B (en) * | 2014-06-16 | 2016-03-02 | 北京奥瑞安能源技术开发有限公司 | A kind of hanging method of coiled tubing speed tubing string |
| CN109458153A (en) * | 2018-11-30 | 2019-03-12 | 中国海洋石油集团有限公司 | A kind of oil recovery tree device suitable for setting suspension coiled tubing production forever |
| CN109458153B (en) * | 2018-11-30 | 2020-09-01 | 中国海洋石油集团有限公司 | Christmas tree device suitable for permanently placing and hanging coiled tubing production |
| CN109538153A (en) * | 2019-01-21 | 2019-03-29 | 杰瑞能源服务有限公司 | A kind of Concentric Coiled Tubing hanger |
| CN111364936A (en) * | 2020-04-09 | 2020-07-03 | 中国石油天然气股份有限公司 | Speed tubular column sealing suspension device with auxiliary sealing and sealing method |
| CN112253021A (en) * | 2020-11-25 | 2021-01-22 | 中国石油天然气集团有限公司 | Liner hanger and anti-abrasion sealing structure thereof |
| CN112253021B (en) * | 2020-11-25 | 2023-03-24 | 中国石油天然气集团有限公司 | Liner hanger and anti-abrasion sealing structure thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130220 |