CN202338257U - Seal and suspension integrated wellhead device for coiled tubing capable of gas recovery by water discharge - Google Patents

Seal and suspension integrated wellhead device for coiled tubing capable of gas recovery by water discharge Download PDF

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Publication number
CN202338257U
CN202338257U CN2011204361354U CN201120436135U CN202338257U CN 202338257 U CN202338257 U CN 202338257U CN 2011204361354 U CN2011204361354 U CN 2011204361354U CN 201120436135 U CN201120436135 U CN 201120436135U CN 202338257 U CN202338257 U CN 202338257U
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CN
China
Prior art keywords
coiled tubing
seal
suspension
valve
control valve
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 - Fee Related
Application number
CN2011204361354U
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Chinese (zh)
Inventor
李旭日
张书平
陈德见
白晓弘
于志刚
程小莉
张国庆
杨旭东
惠艳妮
赵彬彬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Petroleum and Natural Gas Co Ltd
Original Assignee
China Petroleum and Natural Gas Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China Petroleum and Natural Gas Co Ltd filed Critical China Petroleum and Natural Gas Co Ltd
Priority to CN2011204361354U priority Critical patent/CN202338257U/en
Application granted granted Critical
Publication of CN202338257U publication Critical patent/CN202338257U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a seal and suspension integrated wellhead device for coiled tubing capable of gas recovery by water discharge, and is designed to solve the problem that the seal and suspension of the coiled tubing is not matched with the original wellhead after the embedding. A main control valve, a three way type seal and suspension device, a crossover flange, a reserve main control valve, a small stone and a testing valve are sequentially connected above a lower flange, therefore the integrated structure of the seal and suspension device and the wellhead is achieved, and the seal and the suspension during the embedding of the coiled tubing are facilitated, wherein the three way type seal and suspension device is provided with slips and an installing notch for a sealant barrel. Transformation of the wellhead is not needed after the coiled tubing installation, therefore the installation cost is reduced; the operation is convenient, safe and time saving, and the labor intensity of operators is decreased.

Description

The integrated wellhead assembly of coiled tubing water pumping gas production sealed suspension
Technical field
The utility model relates to the integrated wellhead assembly of a kind of coiled tubing water pumping gas production sealed suspension, belongs to the natural gas extraction equipment technical field.
Background technology
" small casing is as the gas production tubing string; the production later stage is lowered to 1 1/2 in sleeve pipe " coiled tubing is as new flow string to adopt 3 1/2 initial stage of production of the low pressure in some gas fields, gas stringer; For the hydrops gas well; 1 1/2 " coiled tubing has and takes liquid water pumping gas production effect continuously, can keep gas well and produce continuously and stably.At present, the wellhead assembly of field by using needs processing suspension hermetically-sealed construction separately after being lowered to coiled tubing, and suspension arrangement is a fixed structure, the situation of not matching can occur with former well head in using at the scene, has brought very big resistance to installation.In addition, adopt the non-integral well head, be lowered to coiled tubing after the well head height change, can can't normally connect with the pipeline that is connected before the well head, need transformed just and can resume production pipeline, can increase installation work intensity like this, delay well opening time.
Summary of the invention
The purpose of the utility model is to provide a kind of coiled tubing water pumping gas production sealed suspension integrated wellhead assembly, is a kind ofly need not transform the gas well mouth that well head can directly put into production after having descended coiled tubing.
The concrete technology contents of the utility model is following:
The integrated wellhead assembly of coiled tubing water pumping gas production sealed suspension is by upwards connecting to form successively with lower component: lower flange → main control valve → three way type sealed suspension device → crossover flange → subsequent use main control valve → little four-way → test valve; Three way type sealed suspension device is provided with the notch of settling hanger slips and cartridge, and three way type sealed suspension device side connects the subsequent use sleeve valve that is communicated with tube connector; Little four-way side connects the production gate valve that is communicated with tube connector, the control gas well is produced, and the tube connector other end connects produces control valve.
When before following coiled tubing, adopting the small casing gas production, the effect of main control valve is a control gas well switch.Owing to be provided with three way type sealed suspension device, so after being lowered to coiled tubing, shaft collar need not implemented any change, and its installation notch can make the row installation again after coiled tubing puts in place of installation packing element and slips.In the production before being lowered to coiled tubing, do not have the oil jacket annular space, and after being lowered to coiled tubing, gas well forms the annular space between coiled tubing and sleeve pipe, at this moment, the production and the operation of this annular space are controlled by sleeve valve.When being lowered to coiled tubing, need to remove with crossover flange and with top, to install in this position then and be lowered to the device operation window, they are different with well head gate valve size, so, need to be lowered to the back at coiled tubing and connect well head with crossover flange.Because coiled tubing is lowered to through main control valve, causes main control valve can't operate the gas well switch, just replace operation by subsequent use main control valve this moment.
The sealed suspension device and the well head of the utility model coiled tubing are integrated, and make things convenient for suspension fashionable under the coiled tubing and sealing.After installing coiled tubing, need not transform well head, mounting cost reduces, operation is convenient, safety saves time, alleviates operating personnel's labour intensity.
Description of drawings
Accompanying drawing is the integrated wellhead assembly structural representation of coiled tubing water pumping gas production sealed suspension.
The specific embodiment
Embodiment:
Embodiment to the utility model further specifies with reference to accompanying drawing:
The integrated wellhead assembly of coiled tubing water pumping gas production sealed suspension is by upwards connecting successively with lower component: lower flange 1 → main control valve 2 → three way type sealed suspension device 3 → crossover flange 5 → subsequent use main control valve 6 → little four-way 7 → test valve 8; Three way type sealed suspension device 3 is provided with the notch 12 of settling hanger slips and cartridge, and three way type sealed suspension device 3 sides connect the subsequent use sleeve valve of connecting with tube connector 11 4; Little four-way 7 sides connect and production gate valve 9 tube connector 11 connections, that the control gas well is produced, and tube connector 11 other ends connect produces control valve 10.
Gas production valve 2,4,6,8,9 uses rising stem (RS.) formula wedge type gate valve, and the ability display working condition is produced control valve 10 and adopted the choke valve that can control gas well flow and downstream pressure.
The utility model installation process is following:
(1) close main control valve 2, produce metering pin valve 10, open subsequent use main control valve 6, produce valve 7, bleed off gas in the wellhead assembly through testing valve 8;
(2) crossover flange 5 with produce the valve 9 places connecting bolt of dismantling, pull down from well head with crossover flange and with top (comprise and produce valve 9);
(3) coiled tubing is installed on sealed suspension crust of the device top and is lowered to device, order is operation window, blowout preventer, injection head successively;
(4) through the coiled tubing car, be lowered to coiled tubing to projected depth;
(5) be lowered to cartridge and suspension slips to sealed suspension device shell 3 inner appropriate positions from operation window, confirm that suspension is normal;
(6) adopt the coiled tubing hydraulic cutting device to cut off coiled tubing; Remove well head successively and transfer applications of coiled tubing unit injection head, blowout preventer and operation window; 20 centimetres place more than the sealed suspension device cuts off coiled tubing with pipe cutter again, and coiled tubing is gone up suspension and fixing;
The well head of (7) dismantling before will constructing partly recovers to be installed on the well head that is lowered to behind the coiled tubing;
(8) close subsequent use sleeve valve 4, test valve 8, produce valve 9; Open subsequent use main control valve 6; Adopt nitrogen supercharging vehicle or natural gas boosting car to connect, toward inner injecting gas of coiled tubing and supercharging, until destroying coiled tubing bottom blanking plug from little four-way 7;
(9) close subsequent use main control valve 6, shed little four-way internal pressure, remove nitrogen supercharging vehicle, recover little four-way plug
(10) open successively subsequent use main control valve 6, produce valve 9, again through producing control valve 10 opening well and making production.

Claims (1)

1. integrated wellhead assembly of coiled tubing water pumping gas production sealed suspension is characterized in that:
The integrated wellhead assembly of coiled tubing water pumping gas production sealed suspension is by upwards connecting to form successively with lower component: lower flange (1) → main control valve (2) → three way type sealed suspension device (3) → crossover flange (5) → subsequent use main control valve (6) → little four-way (7) → test valve (8); Three way type sealed suspension device (3) is provided with the notch (12) of settling hanger slips and cartridge, and three way type sealed suspension device (3) side connects the subsequent use sleeve valve of connecting with tube connector (11) (4); Little four-way (7) side connects the production gate valve of connecting with tube connector (11), the control gas well is produced (9), and tube connector (11) other end connects produces control valve (10).
CN2011204361354U 2011-11-07 2011-11-07 Seal and suspension integrated wellhead device for coiled tubing capable of gas recovery by water discharge Expired - Fee Related CN202338257U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011204361354U CN202338257U (en) 2011-11-07 2011-11-07 Seal and suspension integrated wellhead device for coiled tubing capable of gas recovery by water discharge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011204361354U CN202338257U (en) 2011-11-07 2011-11-07 Seal and suspension integrated wellhead device for coiled tubing capable of gas recovery by water discharge

Publications (1)

Publication Number Publication Date
CN202338257U true CN202338257U (en) 2012-07-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011204361354U Expired - Fee Related CN202338257U (en) 2011-11-07 2011-11-07 Seal and suspension integrated wellhead device for coiled tubing capable of gas recovery by water discharge

Country Status (1)

Country Link
CN (1) CN202338257U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105089524A (en) * 2014-05-14 2015-11-25 中国石油天然气股份有限公司 Device and technical method for pulling out coiled tubing under pressure
CN109025901A (en) * 2018-09-18 2018-12-18 中国石油集团西部钻探工程有限公司 Wellhead assembly is opened between gas well automation
CN109667560A (en) * 2019-02-27 2019-04-23 江苏雄越石油机械设备制造有限公司 A kind of safe and reliable gate valve well head
CN112377136A (en) * 2020-11-12 2021-02-19 中联煤层气有限责任公司 Speed pipe blanking plug opening method and speed pipe communication method
CN113266316A (en) * 2021-07-02 2021-08-17 西安航空职业技术学院 Gas production device and method for wellhead

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105089524A (en) * 2014-05-14 2015-11-25 中国石油天然气股份有限公司 Device and technical method for pulling out coiled tubing under pressure
CN109025901A (en) * 2018-09-18 2018-12-18 中国石油集团西部钻探工程有限公司 Wellhead assembly is opened between gas well automation
CN109667560A (en) * 2019-02-27 2019-04-23 江苏雄越石油机械设备制造有限公司 A kind of safe and reliable gate valve well head
CN112377136A (en) * 2020-11-12 2021-02-19 中联煤层气有限责任公司 Speed pipe blanking plug opening method and speed pipe communication method
CN113266316A (en) * 2021-07-02 2021-08-17 西安航空职业技术学院 Gas production device and method for wellhead

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120718

Termination date: 20201107

CF01 Termination of patent right due to non-payment of annual fee