CN202745789U - Wellhead dual-seal coiled tubing hanging device - Google Patents
Wellhead dual-seal coiled tubing hanging 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
- coiled tubing
- hanger
- hole
- crossover flange
- conical sleeve
- 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
Images
Landscapes
- Gasket Seals (AREA)
Abstract
The utility model discloses a wellhead dual-seal coiled tubing hanging device, which is designed for strengthening the sealing of coiled tubing and meeting the requirements on drainage gas recovery and no-killing operations. The hanging device mainly comprises an upper sealant tube, a radial injected side hole, a fastening bolt, a fan-shaped slip, an upper conical sleeve, a lower sealant tube, a lower conical sleeve and a seat capping wire and the like, wherein the upper sealant tube is arranged in a central diameter-expanded hole of a crossover flange, the radial injected side hole is arranged in a crossover flange body, the fastening bolt is connected with the crossover flange and a hanger, the fan-shaped slip, the upper conical sleeve, the lower sealant tube and the lower conical sleeve are arranged in the central diameter-expanded hole of the hanger, and the seat capping wire is arranged in the radial side hole of a hanger body. According to the utility model, a dual-seal technology is adopted, a first seal effect is achieved through compressing the upper conical sleeve and the lower sealant tube by using the seat capping wire, and a second seal effect is achieved through injecting sealing greases into the radial injected side hole of the crossover flange, so that the long-term sealing effect of coiled tubing is significantly strengthened. When gas-liquid two-phase fluid flows through the device, the fluid does not overflow from a position between the hanger and an adapter flange, thereby meeting the requirements on drainage gas recovery and no-killing operations in the process of carrying out production by using coiled tubing.
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 dual-seal coiled tubing hanging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220338004 CN202745789U (en) | 2012-07-12 | 2012-07-12 | Wellhead dual-seal coiled tubing hanging 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 dual-seal coiled tubing hanging 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 | High-temperature under-pressure test coiled tubing suspending sealing device 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 | High-temperature under-pressure test coiled tubing suspending sealing device 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202745789U (en) | Wellhead dual-seal coiled tubing hanging device | |
| CN101812981B (en) | Mechanical underground all-in-one blowout preventer | |
| CN101644149B (en) | Integral type level oil extraction wellhead equipment | |
| CN109458153B (en) | Christmas tree device suitable for permanently placing and hanging coiled tubing production | |
| CN106050199A (en) | Synthetic drainage and gas production device and method | |
| CN103470203A (en) | Velocity string hanger of coiled tubing and hanging method thereof | |
| CN106968658A (en) | A kind of efficient device for fracturing wellhead | |
| CN204984329U (en) | Built -in coiled tubing hanger | |
| CN201443330U (en) | Novel wellhead and oil-producing tree | |
| CN204754881U (en) | Double -barrelled gas well flow string parallels | |
| CN103790542A (en) | High-temperature under-pressure test coiled tubing suspending sealing device and using method | |
| CN201486503U (en) | Integrated type horizontal oil extraction wellhead device | |
| CN203891837U (en) | Large-diameter high-pressure oil and gas recovery wellhead device | |
| CN203452759U (en) | Parallel double-pipe steam injection well mouth device | |
| CN2846732Y (en) | Non-casting ball type blocking pressure signle flow device | |
| CN104879097A (en) | Gas well production string provided with double parallel pipes | |
| CN104879098B (en) | A kind of concentric double pipe gas well liquid loading tubing string | |
| CN203476263U (en) | Coiled tubing speed tubular column hanger | |
| CN202745939U (en) | Coiled tubing hanger | |
| CN205000922U (en) | Built -in coiled tubing completion pipe string | |
| CN203742530U (en) | Suspension packer | |
| CN203808923U (en) | Suspension releasing packer for oil-gas water well | |
| CN204040963U (en) | A kind of extension hanger | |
| CN104019030B (en) | A kind of reacting cycle liquid drives the discharge device of oil pumping screw pump | |
| CN204691729U (en) | Mud line production tree under water |
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 |