CN204754881U - Double -barrelled gas well flow string parallels - Google Patents

Double -barrelled gas well flow string parallels Download PDF

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Publication number
CN204754881U
CN204754881U CN201520404517.7U CN201520404517U CN204754881U CN 204754881 U CN204754881 U CN 204754881U CN 201520404517 U CN201520404517 U CN 201520404517U CN 204754881 U CN204754881 U CN 204754881U
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China
Prior art keywords
oil pipe
tubing
gas well
seating nipple
packing
Prior art date
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Active
Application number
CN201520404517.7U
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Chinese (zh)
Inventor
雷霄
袁辉
宋立志
于志刚
廖云虎
颜明
彭建峰
穆永威
贾辉
谢思宇
梁玉凯
吴绍伟
曾玉斌
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 National Offshore Oil Corp CNOOC
China National Offshore Oil Corp Zhanjiang Branch
Original Assignee
China National Offshore Oil Corp CNOOC
China National Offshore Oil Corp Zhanjiang Branch
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Priority to CN201520404517.7U priority Critical patent/CN204754881U/en
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Abstract

The utility model discloses a double -barrelled gas well flow string parallels, including sleeve pipe, double -barrelled tubing hanger, big oil pipe, little oil pipe, double -barrelled packer, big oil pipe and little oil pipe hang through double -barrelled oil pipe and hang in the sleeve pipe, double -barrelled packer seals the sleeve pipe and separates to fix big oil pipe and little oil pipe, a downhole safety valve and first seating nipple be equipped with on the big oil pipe, the 2nd downhole safety valve and second seating nipple be equipped with on the little oil pipe. This tubular column is when the productivity was higher in limine, big or small oil pipe coproduction, big oil pipe produced alone when the productivity descended middle period, behind the gas well water breakthrough, it is stronger that little oil pipe takes fluid power power, can take liquid production alone, it is more like the hydrops, can't the blowing then adopt the gas lift water pumping gas production. Realized that the gas well need not to move the tubular column operation in whole production process, it is fast to have the gas producting rate, characteristics that environmental pollution is little, and the later stage need not the well workover, reduces the reservoir and pollutes, reduces the operating cost, has good suitability to high yield gas field development.

Description

A kind of two-tube gas well liquid loading tubing string arranged side by side
Technical field
The utility model relates to oil gas production equipment, concrete a kind of gas well liquid loading tubing string.
Background technology
It is CN203452734U that State Intellectual Property Office discloses publication number on February 26th, 2014, patent name is the patent of the production of a kind of high-pressure gas well and Paraffin Removal integrated pipe column, this patent discloses a kind of high-pressure gas well to produce and Paraffin Removal integrated pipe column structure, be included on oil pipe and arrange chemical agent injection valve, this chemical agent injection valve is one way valve; Between oil pipe and sleeve pipe, annular space arranges capillary line in addition, and one end of capillary line is communicated in chemical agent injection valve, and the other end reaches ground, can meet high-pressure gas well annular space band protection liquid and packer condition, reach Paraffin Removal object; Above chemical agent injection valve, storm valve installed by oil pipe in addition, and realize storm valve by control pipeline and open or close, this control pipeline one end is connected to downhole control valve, and the other end is connected to ground installation.This New pipe rod structure reduces high-content wax, high-pressure gas well paraffin blockage situation on the one hand; Ensure that high-pressure gas well is kept the safety in production on the other hand.
The technical scheme of above-mentioned patent is obviously different from the technical scheme of this patent, the problem solved is also different, above-mentioned patent is owing to adopting the form of structure of traditional single tube post operation, therefore there is following defect: at completion phase, producing requirement according to gas well deliverability and joining, to carry out flow string preferred, string size be only applicable to operation initial productivity higher time production requirement.The gas well liquid loading middle and later periods, along with the generation of the problem such as decline, payzone pollution, water outlet of strata pressure, original flow string cannot meet takes liquid Production requirement, causes gas well plug-ging even water logging stopping production.At this moment, then need to implement by workover treatment the normal production that water drainage-gas recovery technology recovers gas well, the workover treatment investment of gas well is large, risk is high, difficulty is large, and often due to factors such as pressure coefficient is low, operating condition restrictions, also re-set target cannot be reached after well workover, not only cause economic loss, and there is environment pollution.
Utility model content
The purpose of this utility model overcomes deficiency of the prior art, a kind of arranged side by side two-tube gas well liquid loading tubing string that can meet gas well liquid loading Life cycle is provided, this flow string can meet the Production requirement during gas well operation initial stage, the needs that liquid is produced are taken continuously, without the need to dynamic tubing string workover treatment after meeting middle and later periods pressure drop, Gas well dewatering again.
It is as follows that the utility model solves the problems of the technologies described above taked technical scheme:
A kind of two-tube gas well liquid loading tubing string arranged side by side, it includes sleeve pipe, two-tube tubing hanger, Big Inch, little oil pipe, the first storm valve, the second storm valve, dual tubing packing, the first seating nipple and the second seating nipple, described Big Inch and little oil pipe are hung in sleeve pipe by two-tube tubing hanger, described dual tubing packing carries out packing to sleeve pipe, and is fixed Big Inch and little oil pipe; On described Big Inch and the first storm valve is equipped with in the top being positioned at dual tubing packing, on Big Inch and the first seating nipple is equipped with in the below being positioned at dual tubing packing; On described little oil pipe and the second storm valve is equipped with in the top being positioned at dual tubing packing, on little oil pipe and the second seating nipple is equipped with in the below being positioned at dual tubing packing; Described first seating nipple and the second seating nipple are used for setting of dual tubing packing, and the shutoff to Big Inch and little oil pipe.
Further, the first steel wire guide shoe is equipped with in the lower end of described Big Inch, and the lower end of described little oil pipe is provided with the second steel wire guide shoe.
Further, on described little oil pipe and gas lift valve is equipped with in the top being positioned at dual tubing packing.
Further, described Big Inch is docked by multiple-tubing string to form, and the two ends of described first storm valve are connected with tubing round thread with the two ends of the first seating nipple; The upper end of described first steel wire guide shoe is connected with the tubing round thread of lowest part.
Further, the first seating nipple is positioned at 1st ~ 2 oil pipe places below dual tubing packing.
Further, described little oil pipe is docked by multiple-tubing string to form, and the two ends of described second storm valve, the two ends of the second seating nipple and the two ends of gas lift valve are all connected with tubing round thread; The upper end of described second steel wire guide shoe is connected with the tubing round thread of lowest part.
Further, described gas lift valve to be connected on little oil pipe and to be positioned at the oil pipe place, 1st ~ 2, top of dual tubing packing.
Further, described second seating nipple is positioned at 1st ~ 2 oil pipe places below dual tubing packing.
The beneficial effects of the utility model: this tubular column structure can meet gas well Life cycle Production requirement, and when initial productivity is higher, large little oil pipe is produced simultaneously; When mid-term, production capacity declined, Big Inch is produced separately; After gas well water breakthrough, little oil pipe fluid-carrying capability is comparatively strong, can take separately liquid and produce; As hydrops is more, blowing cannot then adopt gaslift water pumping gas production.This tubing string has taken into full account the water drainage-gas recovery technology of gas well liquid loading middle and later periods, achieve gas well in whole manufacturing process without the need to dynamic tubing string operation, there is gas producting rate fast, the feature that environment pollution is little, later stage is without the need to well workover, reduce reservoir pollution, reduce operating cost, to high yield gas field development, there is good applicability.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of two-tube gas well liquid loading tubing string arranged side by side of the present utility model.
In figure: 1, two-tube tubing hanger; 2, Big Inch; 3, little oil pipe; 4, the first storm valve; 5, the second storm valve; 6, gas lift valve; 7, dual tubing packing; 8, the first seating nipple; 9, the second seating nipple; 10, the first steel wire guide shoe; 11, the second steel wire guide shoe; 12, sleeve pipe.
Detailed description of the invention
As shown in Figure 1, a kind of two-tube gas well liquid loading tubing string arranged side by side, it includes sleeve pipe 12, two-tube tubing hanger 1, Big Inch 2, little oil pipe 3, first storm valve 4, second storm valve 5, gas lift valve 6, dual tubing packing 7, first seating nipple 8 and the second seating nipple 9, described Big Inch 2 and little oil pipe 3 are hung in sleeve pipe 12 by two-tube tubing hanger 1, described dual tubing packing 7 pairs of sleeve pipes 12 carry out packing, and are fixed Big Inch 2 and little oil pipe 3.
On Big Inch 2 and the first storm valve 4 is equipped with in the top being positioned at dual tubing packing 7, on Big Inch 2 and the first seating nipple 8 is equipped with in the below being positioned at dual tubing packing 7, the first steel wire guide shoe 10 is equipped with in the lower end of described Big Inch 2.Specifically, described Big Inch 2 is docked by multiple-tubing string to form, and the two ends of described first storm valve 4 are connected with tubing round thread with the two ends of the first seating nipple 8, and the first seating nipple 8 is positioned at 1st ~ 2 oil pipe places below dual tubing packing; The upper end of described first steel wire guide shoe 10 is connected with the tubing round thread of lowest part.
On little oil pipe 3 and the second storm valve 5 is equipped with in the top being positioned at dual tubing packing 7, on little oil pipe 3 and the second seating nipple 9, second seating nipple 9 setting for dual tubing packing 7 is equipped with in the below being positioned at dual tubing packing 7.The lower end of little oil pipe 3 is provided with the second steel wire guide shoe 11.On described little oil pipe 3 and gas lift valve 6 is equipped with in the top being positioned at dual tubing packing 7.Specifically, little oil pipe 3 is docked by multiple-tubing string to form, and the two ends of described second storm valve 5, the two ends of the second seating nipple 9 and the two ends of gas lift valve 6 are all connected with tubing round thread; The upper end of described second steel wire guide shoe 11 is connected with the tubing round thread of lowest part, and described gas lift valve 6 to be connected on little oil pipe 3 and to be positioned at the oil pipe place, 1st ~ 2, top of dual tubing packing 7.Described second seating nipple 9 is positioned at 1st ~ 2 oil pipe places below dual tubing packing 7.
The application of this patent, needs to transform gas well mouth device, and well head christmas tree needs to be replaced by the two-tube gas well christmas tree satisfied condition, and tubing hanger is replaced by two-tube hermetic seal tubing hanger simultaneously.For meeting the requirement that liquids continuous removal is produced, to carry out preferably to tubing size, product and production target prediction data is joined according to gas well, analyze the pipe aperture preferably meeting and take liquid continuously and produce, analysis and designation gas lift valve parameter, simultaneously according to gas componant, analyze the oil pipe material preferably meeting production requirement.
Operating principle: at the gas well liquid loading initial stage, adopt size double tube to produce, all do not throw in blanking plug in the first seating nipple and the second seating nipple, size double tube works simultaneously simultaneously; Mid-term throws in blanking plug shutoff oil pipe in the second seating nipple, utilizes Big Inch to produce separately; Later stage throws in blanking plug shutoff oil pipe in the first seating nipple, utilizes little oil pipe to produce separately; When strata pressure declines, gas well plug-ging, little oil pipe also cannot meet when taking liquid production requirement, annular air injection, and institute's gas injection body enters in little oil pipe by annular space by gas lift valve 6, adopts gaslift drainage pattern to carry out gas production operation.
In sum; after those of ordinary skill in the art reads the utility model file; make other various corresponding conversion scheme according to the technical solution of the utility model and technical conceive without the need to creative mental labour, all belong to the scope that the utility model is protected.

Claims (8)

1. a two-tube gas well liquid loading tubing string arranged side by side, it is characterized in that: it includes sleeve pipe, two-tube tubing hanger, Big Inch, little oil pipe, the first storm valve, the second storm valve, dual tubing packing, the first seating nipple and the second seating nipple, described Big Inch and little oil pipe are hung in sleeve pipe by two-tube tubing hanger, described dual tubing packing carries out packing to sleeve pipe, and is fixed Big Inch and little oil pipe; On described Big Inch and the first storm valve is equipped with in the top being positioned at dual tubing packing, on Big Inch and the first seating nipple is equipped with in the below being positioned at dual tubing packing; On described little oil pipe and the second storm valve is equipped with in the top being positioned at dual tubing packing, on little oil pipe and the second seating nipple is equipped with in the below being positioned at dual tubing packing; Described first seating nipple and the second seating nipple are used for setting of dual tubing packing, and the shutoff to Big Inch and little oil pipe.
2. two-tube gas well liquid loading tubing string arranged side by side according to claim 1, it is characterized in that: the first steel wire guide shoe is equipped with in the lower end of described Big Inch, the lower end of described little oil pipe is provided with the second steel wire guide shoe.
3. two-tube gas well liquid loading tubing string arranged side by side according to claim 2, is characterized in that: on described little oil pipe and gas lift valve is equipped with in the top being positioned at dual tubing packing.
4. two-tube gas well liquid loading tubing string arranged side by side according to claim 2, is characterized in that: described Big Inch is docked by multiple-tubing string to form, and the two ends of described first storm valve are connected with tubing round thread with the two ends of the first seating nipple; The upper end of described first steel wire guide shoe is connected with the tubing round thread of lowest part.
5. two-tube gas well liquid loading tubing string arranged side by side according to claim 4, is characterized in that: the first seating nipple is positioned at 1st ~ 2 oil pipe places below dual tubing packing.
6. two-tube gas well liquid loading tubing string arranged side by side according to claim 3, it is characterized in that: described little oil pipe is docked by multiple-tubing string to form, and the two ends of described second storm valve, the two ends of the second seating nipple and the two ends of gas lift valve are all connected with tubing round thread; The upper end of described second steel wire guide shoe is connected with the tubing round thread of lowest part.
7. two-tube gas well liquid loading tubing string arranged side by side according to claim 6, is characterized in that: described gas lift valve to be connected on little oil pipe and to be positioned at the oil pipe place, 1st ~ 2, top of dual tubing packing.
8. two-tube gas well liquid loading tubing string arranged side by side according to claim 6, is characterized in that: described second seating nipple is positioned at 1st ~ 2 oil pipe places below dual tubing packing.
CN201520404517.7U 2015-06-12 2015-06-12 Double -barrelled gas well flow string parallels Active CN204754881U (en)

Priority Applications (1)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105464615A (en) * 2015-12-31 2016-04-06 东营市福利德石油科技开发有限责任公司 Parallel double-pipe packer for deepwater oil well
CN108729884A (en) * 2017-04-20 2018-11-02 中国石油天然气股份有限公司 A kind of extracting device of oil and its application
CN110242260A (en) * 2019-05-17 2019-09-17 张强 The application method of the layering gas recovery device of the double-deck tubing string
CN110644933A (en) * 2019-10-25 2020-01-03 左入林 Sucker rod and casing with oil pipe traction device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105464615A (en) * 2015-12-31 2016-04-06 东营市福利德石油科技开发有限责任公司 Parallel double-pipe packer for deepwater oil well
CN105464615B (en) * 2015-12-31 2019-01-11 东营市福利德石油科技开发有限责任公司 Deepwater wells parallel double tube packer
CN108729884A (en) * 2017-04-20 2018-11-02 中国石油天然气股份有限公司 A kind of extracting device of oil and its application
CN110242260A (en) * 2019-05-17 2019-09-17 张强 The application method of the layering gas recovery device of the double-deck tubing string
CN110242260B (en) * 2019-05-17 2021-04-20 南通新华诚科研仪器有限公司 Application method of layered gas production device of double-layer pipe column
CN110644933A (en) * 2019-10-25 2020-01-03 左入林 Sucker rod and casing with oil pipe traction device

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Legal Events

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GR01 Patent grant
C14 Grant of patent or utility model
CP03 Change of name, title or address

Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing

Co-patentee after: CNOOC (China) Limited Zhanjiang Branch

Patentee after: China Offshore Oil Group Co., Ltd.

Address before: 100010 China oil tower, 25 Chaoyangmen North Street, Dongcheng District, Beijing

Co-patentee before: CNOOC (China) Limited Zhanjiang Branch

Patentee before: China National Offshore Oil Corporation

CP03 Change of name, title or address