CN2342094Y - Wellhead device for pumping and injecting at the same well - Google Patents
Wellhead device for pumping and injecting at the same well Download PDFInfo
- Publication number
- CN2342094Y CN2342094Y CN 98206148 CN98206148U CN2342094Y CN 2342094 Y CN2342094 Y CN 2342094Y CN 98206148 CN98206148 CN 98206148 CN 98206148 U CN98206148 U CN 98206148U CN 2342094 Y CN2342094 Y CN 2342094Y
- Authority
- CN
- China
- Prior art keywords
- oil pipe
- pumping
- water
- injecting
- hanger
- 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
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Abstract
The utility model relates to a wellhead device for pumping and injecting at the same well, belonging to a wellhead device of a pumping and injecting at the same well technological system for an offshore oil field. The utility model is composed of an oil pipe four way, and a big and a small oil pipe hangers which are sealed in the oil pipe four way, and a detachable christmas tree which is respectively connected with a pumping passage and an injecting passage of the master oil pipe hanger. The big oil pipe hanger is provided with a big and a small passages which are respectively used for sealing a water and oil pipe hanger and connecting a water injection pipe column. The small oil pipe hanger is provided with a pumping passage which is used for connecting a pumping pipe column. The pumping christmas tree and the injecting christmas tree are separately connected with the pumping passage of the small oil pipe hanger and the injecting passage of the big oil pipe hanger. The utility model has the advantages of artful structure, and single lifting and falling for the pumping pipe column and a submersible pump.
Description
The utility model relates to a kind of dual tubing oil recovery wellhead assembly that is used for the offshore oilfield co-well oil-pumping and water-injecting technological system.
At sea in the petroleum recovering technology, need constantly in the oil reservoir of seabed water filling to increase the pressure of oil reservoir.Co-well oil-pumping and water-injecting technological system promptly is to be the process system of water source water filling supercharging in the oil reservoir of seabed with the seabed water layer, and it is mainly by pit shaft be installed in the submersible pump in the pit shaft and draw water tubing string and water injection string are formed.The airtight pit shaft that is formed by connecting by the more piece conduit stretches into the oil reservoir of seabed after offshore production platform passes the seabed water layer, penetrated suction eye and water injection hole respectively on the barrel corresponding to water layer and oil reservoir place, the packer that is used for packing water layer and oil reservoir has been installed in the pit shaft between water layer and the oil reservoir.The tubing string that draws water stretches into after by wellhead assembly in the pit shaft of water layer top, and submersible pump promptly is installed in the lower end of the tubing string that draws water.The upper end of water injection string is communicated with the tubing string that draws water, its lower end stretch in the pit shaft after by wellhead assembly and pass packer after stretch into oil reservoir place, seabed.System when operation, the water in the water layer of seabed by the submersible pump supercharging after, after the tubing string that draws water rises to offshore production platform, inject with the well oil reservoir through water injection string again.In above-mentioned co-well oil-pumping and water-injecting technological system, draw water tubing string and water injection string two casing strings simultaneously by having twin-channel dual tubing oil recovery wellhead assembly, wherein water injection string is throughout the year motionless basically, and the tubing string that draws water then need remove continually because of pump detection and workover.
Dual tubing oil recovery wellhead assembly of the prior art is to be made of with the whole production tree that links to each other with two-tube tubing hanger with the two-tube tubing hanger that seat is enclosed in the oil pipe four-way the oil pipe four-way that is installed in well head.Two-tube tubing hanger has two passages, and its lower end is all tubing thread and links to each other with oil pipe, and its upper end has seal cartridge and matches with whole production tree.Also be provided with two passages on the whole production tree, main valve and paraffin valve all are housed on each passage.For the dual tubing oil recovery wellhead assembly of said structure, the rountrip of oil pipe must be worked along both lines, and carries out simultaneously, and production tree also must integral disassembly, assembly.Obviously, if in co-well oil-pumping and water-injecting technological system, still continue to use the dual tubing oil recovery wellhead assembly of this structure, then when frequently removing the tubing string that draws water, also certainly will to remove the whole production tree of water injection string and dismounting continually, increase the workload of inspection pump virtually greatly.
The purpose of this utility model promptly is the improvement suitable in addition to the structure of dual tubing oil recovery wellhead assembly of the prior art, so that the tubing string that draws water can break away from water injection string and remove separately, thereby significantly reduces the pump detection and workover amount.
To achieve these goals, the utility model is designed to binary channels tubing hanger by two primary-secondary type tubing hangers that tubing hanger is formed of size, the Big Inch hanger has two passages of size and is used for a seat envelope little oil pipe respectively to be hung and is connected water injection string, and little oil pipe is hung and had pumping channel and be used for the connection tubing string that draws water.Meanwhile, change split type draw water production tree and water flood recovery tree and hang pumping channel with little oil pipe respectively and hang waterflood path with Big Inch and link to each other into whole production tree is corresponding.During pump detection and workover, only need remove draw water tubing string and the dismounting production tree of drawing water separately, needn't remove water injection string and dismounting water flood recovery tree fully simultaneously, therefore can significantly reduce the workload of pump detection and workover.Be described in further detail below in conjunction with the technical characterictic of specific embodiment the utility model co-well oil-pumping and water-injecting wellhead assembly.
Accompanying drawing 1 is the structural representation of the utility model co-well oil-pumping and water-injecting wellhead assembly.
With reference to the accompanying drawings 1, the utility model co-well oil-pumping and water-injecting wellhead assembly mainly is made of oil pipe four-way, primary-secondary type tubing hanger, sealing flange and split type production tree.Oil pipe four-way 1 has lower through-hole and two-way side opening, and its epicoele and cavity of resorption seal with primary-secondary type tubing hanger and production casing phase site respectively, and its side opening links to each other with valve by flange.Primary-secondary type tubing hanger is made up of two tubing hangers of size, and 2 of Big Inch extensions are enclosed in the epicoele of oil pipe four-way 1, and little oil pipe is hung 3 seats and is enclosed in the Big Inch extension 2.Big Inch extension 2 has two passages of size and is respectively applied for seat envelope little oil pipe extension 3 and is connected water injection string, is connected with a seal cartridge 4 on the passage aisle.Little oil pipe is hung 3 and is directly had pumping channel and be used for connecting the tubing string that draws water, and its upper end has a lifting sub 5.Sealing flange 6 is installed in the top of oil pipe four-way 1, has two passages of size on it.Passage aisle and seal cartridge 4 phase sites envelope, its top has a lifting sub 7; Major path is then hung 3 phase sites envelope with little oil pipe, and its top has little oil pipe and hangs gland 8.Split type production tree comprises draw water production tree and water flood recovery tree, is installed in the top of sealing flange 6 relatively.The production tree of drawing water is made up of main valve 9, paraffin valve 10 and threeway 11 and hangs lifting sub 5 with little oil pipe and links to each other, and its side direction is equipped with flutter valve 12.The water flood recovery tree is made up of main valve 13, paraffin valve 14 and threeway 15 and links to each other with sealing flange lifting sub 7, and its side direction is equipped with flutter valve 16.
When the co-well oil-pumping and water-injecting wellhead assembly is installed, at first Big Inch is hung and linked to each other with water injection string and the Big Inch hanging seat is enclosed in the oil pipe four-way, sealing flange is installed then and is connected water flood recovery and set.Be lowered to the tubing string and little oil pipe hung with after the tubing string that draws water links to each other of drawing water, again the little oil pipe hanging seat is encapsulated in that Big Inch is hung and sealing flange in and little oil pipe extension gland is installed, the production tree of drawing water of connection at last.When tripping out the submersible pump maintenance, at first pull down the production tree of drawing water, unload little oil pipe then and hang gland, directly little oil pipe extension and the tubing string that draws water (together with submersible pump) are tripped out from Big Inch extension and sealing flange by lifting sub at last.This shows that removing of the tubing string that draws water can be carried out separately, needn't remove Big Inch extension and water injection string fully simultaneously, also needn't set by the dismounting water flood recovery, thereby significantly reduced the workload of pump detection and workover.Therefore, the utility model is particularly suitable for the wellhead assembly as co-well oil-pumping and water-injecting technological system.
Claims (1)
1, a kind of co-well oil-pumping and water-injecting wellhead assembly that is used for the offshore oilfield co-well oil-pumping and water-injecting technological system is made of with the binary channels production tree that links to each other with two-tube tubing hanger with the two-tube tubing hanger that seat is enclosed in the oil pipe four-way the oil pipe four-way that is installed in well head; Of the present utility modelly be characterised in that described two-tube tubing hanger is to be enclosed in that Big Inch in the oil pipe four-way is hung and seat is enclosed in the tubule of Big Inch in hanging and hangs the primary-secondary type tubing hanger that constitutes by seat, the Big Inch hanger has two passages of size and is respectively applied for seat envelope little oil pipe extension and is connected water injection string, and little oil pipe is hung and had pumping channel and be used for connecting the tubing string that draws water; Described binary channels production tree is to set the split type production tree that constitutes by the production tree of drawing water that links to each other with little oil pipe extension pumping channel with the water flood recovery that links to each other with Big Inch extension waterflood path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98206148 CN2342094Y (en) | 1998-06-25 | 1998-06-25 | Wellhead device for pumping and injecting at the same well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98206148 CN2342094Y (en) | 1998-06-25 | 1998-06-25 | Wellhead device for pumping and injecting at the same well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2342094Y true CN2342094Y (en) | 1999-10-06 |
Family
ID=33962379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98206148 Expired - Lifetime CN2342094Y (en) | 1998-06-25 | 1998-06-25 | Wellhead device for pumping and injecting at the same well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2342094Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946289A (en) * | 2020-09-08 | 2020-11-17 | 中国石油天然气股份有限公司 | Multi-channel flow divider for cluster pipe wellhead |
| CN111946291A (en) * | 2020-09-08 | 2020-11-17 | 中国石油天然气股份有限公司 | Connecting device for inner channel of cluster pipe wellhead pipe cutting butt joint |
| CN111963094A (en) * | 2020-09-08 | 2020-11-20 | 中国石油天然气股份有限公司 | Cluster pipe two-gas co-production tubular column |
| CN112065322A (en) * | 2020-09-15 | 2020-12-11 | 东营市正能石油科技有限公司 | Wellhead Christmas tree |
-
1998
- 1998-06-25 CN CN 98206148 patent/CN2342094Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946289A (en) * | 2020-09-08 | 2020-11-17 | 中国石油天然气股份有限公司 | Multi-channel flow divider for cluster pipe wellhead |
| CN111946291A (en) * | 2020-09-08 | 2020-11-17 | 中国石油天然气股份有限公司 | Connecting device for inner channel of cluster pipe wellhead pipe cutting butt joint |
| CN111963094A (en) * | 2020-09-08 | 2020-11-20 | 中国石油天然气股份有限公司 | Cluster pipe two-gas co-production tubular column |
| CN112065322A (en) * | 2020-09-15 | 2020-12-11 | 东营市正能石油科技有限公司 | Wellhead Christmas tree |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |