CN100343480C - Separate layer gas injection tube pile - Google Patents
Separate layer gas injection tube pile Download PDFInfo
- Publication number
- CN100343480C CN100343480C CNB2005101046643A CN200510104664A CN100343480C CN 100343480 C CN100343480 C CN 100343480C CN B2005101046643 A CNB2005101046643 A CN B2005101046643A CN 200510104664 A CN200510104664 A CN 200510104664A CN 100343480 C CN100343480 C CN 100343480C
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- China
- Prior art keywords
- packer
- gas injection
- separate layer
- valve
- seal
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- Expired - Fee Related
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Abstract
The present invention discloses a layered air injecting pipe column which comprises an outer pipe, an inner tube, a packer with a channel, a balanced packer, a safe injecting valve, a well washing packer, a supporting slip, a circulating valve, a sieve pipe, a thread stopper, and a shunting check valve, wherein the shunting check valve is connected between the packer with the channel and the balanced packer, the outer pipe is connected to the packer with the channel, the inner pipe passes through the packer with the channel and then is arranged in the shunting check valve, and the bottom of the balanced packer is orderly connected with the safe injecting valve, the well washing packer, the supporting slip, the circulating valve, the sieve pipe and the thread stopper. The present invention has the functions of effective and accurate layered injection and the injection of corrosion inhibitor and the characteristics of small work quantity and low cost and is used for the gas injection or the water injection technology of oil extraction.
Description
One, technical field
The present invention relates to oil exploitation down-hole gas injection tubing string, particularly a kind of separate layer gas injection tube pile.
Two, background technology
At present, field use is in the process pipe string of gas injection, adopts the permanent packer of external import to add the structure of airtight button oil pipe mostly, and this tubing string shortcoming or deficiency are: 1. can not add corrosion inhibiter, make tubing string and kit be subjected to corrosion and damage, reduce its intensity and application life; 2. can not layering inject, can only generally inject the gas injection poor effect; 3. the packer tubing string can't deblocking, by brill mill, well workover, replace tubes post need carry out large repairs operation, operation is many, the cost height.
Three, summary of the invention
The purpose of this invention is to provide a kind of improved separate layer gas injection tube pile, shortcoming or deficiency that it can overcome effectively or avoid existing in the above-mentioned prior art improve the gas injection effect effectively, carry out deblocking easily, discharge packer and repair the replace tubes post.
Separate layer gas injection tube pile of the present invention, comprise outer tube, interior pipe, tape channel packer, balance packer, safe injection valve, flushing packer, supporting slip, circulating valve, screen casing and plug, also comprise the branch flow check valve that is connected between described tape channel packer and the balance packer, described outer tube is connected on the packer of tape channel, interior pipe passes the tape channel packer, install in minute flow check valve, be connected with safe injection valve, flushing packer, supporting slip, circulating valve, screen casing and plug in turn under the described balance packer.
Wherein, described minute flow check valve comprise top connection and on distributary base, lower contact, seal, piston and the piston seat and the spring that connect and install, install branch fluid, baffle ring, seal and spacer ring on distributary base in turn.Fluid top connected seal receptacle in described minute, was installed on baffle ring, seal and spacer ring on it, lower end closed, and lower part wall is provided with the interconnection hole, divides between fluid and seal receptacle and distributary base and the top connection to constitute the vertical passageway.Described piston is installed on the piston seat under the spring.Described seal is " V " shape structure that accompanies cloth, wire fabric.Described seal is " L " shape structure, installs in the piston lower end.
The present invention has following advantage compared with prior art:
1, owing to adopted the tape channel packer and divided the combined string of flow check valve, can carry out effectively, layered gas-injection accurately, improve injection efficiency;
2, each layer gas injection rate can at any time, in time be adjusted gas injection rate according to strata condition and design by the well head Ground Control, need not operation allotment down-hole valve, reduces flow chart, reduces operating cost;
3, can inject corrosion inhibiter easily, protective casing and injection string are avoided or corrosion mitigation;
4, divide flow check valve to open when gas injection, and close when stopping annotating, can prevent from that injecting gas from returning to tell, keep the stratum calmness, injection pressure is steady.
5, can replace separate layer water injection string.
Four, description of drawings
Fig. 1 is a structural representation of the present invention,
Fig. 2 is for pressing shunting check valve structure schematic diagram shown in Figure 1.
Five, the specific embodiment
Consult accompanying drawing, a kind of separate layer gas injection tube pile, comprise outer tube 1, interior pipe 2, tape channel packer 3, balance packer 5, safe injection valve 6, flushing packer 7, supporting slip 8, circulating valve 9, screen casing 10 and plug 11, also comprise the branch flow check valve 4 that is connected between described tape channel packer 3 and the balance packer 5, outer tube 1 is connected on the tape channel packer 3, interior pipe 2 passes tape channel packer 3, install in minute flow check valve 4, the balance packer is connected with safe injection valve 6 for 5 times in turn, flushing packer 7, supporting slip 8, circulating valve 9, screen casing 10 and plug 11.
Divide flow check valve 4 comprise top connection 41 and on distributary base 47, lower contact 52, seal 51, piston 49 and the piston seat 50 and the spring 48 that connect and install, install branch fluid 46, baffle ring 45, seal 43 and spacer ring 44 on distributary base 47 in turn.Divide fluid 46 tops to connect seal receptacle 42, be installed on baffle ring 45, seal 43 and spacer ring 44 on it, lower end closed, lower part wall is provided with the interconnection hole, divides between fluid 46 and seal receptacle 42 and distributary base 47 and the top connection 41 to constitute the vertical passageway.Piston 49 is installed on the piston seat under the spring 48 50.Seal 43 is for accompanying " V " shape structure of cloth, wire fabric.Seal 51 is " L " shape structure, installs in the piston lower end.
Claims (6)
1, a kind of separate layer gas injection tube pile, comprise outer tube, interior pipe, tape channel packer, balance packer, safe injection valve, flushing packer, supporting slip, circulating valve, screen casing and plug, it is characterized in that also comprising the branch flow check valve that is connected between described tape channel packer and the balance packer, described outer tube is connected on the packer of tape channel, interior pipe passes the tape channel packer, install in minute flow check valve, be connected with safe injection valve, flushing packer, supporting slip, circulating valve, screen casing and plug in turn under the described balance packer.
2, separate layer gas injection tube pile according to claim 1, it is characterized in that described minute flow check valve comprise top connection and on distributary base, lower contact, seal, piston and the piston seat and the spring that connect and install, install branch fluid, baffle ring, seal and spacer ring on distributary base in turn.
3, separate layer gas injection tube pile according to claim 2, it is characterized in that described minute fluid top connects seal receptacle, be installed on baffle ring, seal and spacer ring on the sealing seat, divide the fluid lower end closed, divide the fluid lower part wall to be provided with the interconnection hole, divide between fluid and seal receptacle and distributary base and the top connection to constitute the vertical passageway.
4, separate layer gas injection tube pile according to claim 2 is characterized in that described piston installs on the piston seat under the spring.
5, separate layer gas injection tube pile according to claim 2 is characterized in that described seal is " V " shape structure that accompanies cloth, wire fabric.
6, separate layer gas injection tube pile according to claim 2 is characterized in that described seal is " L " shape structure, installs in the piston lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101046643A CN100343480C (en) | 2005-12-24 | 2005-12-24 | Separate layer gas injection tube pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101046643A CN100343480C (en) | 2005-12-24 | 2005-12-24 | Separate layer gas injection tube pile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1793606A CN1793606A (en) | 2006-06-28 |
| CN100343480C true CN100343480C (en) | 2007-10-17 |
Family
ID=36805243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101046643A Expired - Fee Related CN100343480C (en) | 2005-12-24 | 2005-12-24 | Separate layer gas injection tube pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100343480C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101074602B (en) * | 2007-07-18 | 2010-10-13 | 中国石油化工股份有限公司胜利油田分公司孤东采油厂 | Stratified injection tubular pile |
| CN101377125B (en) * | 2008-10-08 | 2012-09-05 | 中国石化股份胜利油田分公司现河采油厂 | Water well acidizing and sand prevention liquid replacing apparatus |
| CN101775977B (en) * | 2010-01-22 | 2014-03-05 | 中国石油化工股份有限公司 | Dual-tube injection well safety production string |
| CN103075134B (en) * | 2013-01-18 | 2015-11-18 | 中国石油天然气股份有限公司 | Automatic air and steam selecting and matching injection pipe column |
| CN103758496B (en) * | 2014-01-02 | 2016-04-06 | 中国石油天然气股份有限公司 | Nitrogen flooding concentric layered steam injection pipe column and method |
| CN109184647B (en) * | 2018-08-24 | 2021-09-28 | 中国石油天然气股份有限公司 | Layered fireflood ignition gas injection pipe column and layered fireflood method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4399865A (en) * | 1981-07-20 | 1983-08-23 | Chevron Research Company | Concentric steaming string downhole apparatus |
| CN2382838Y (en) * | 1999-07-19 | 2000-06-14 | 辽河石油勘探局锦州采油厂 | High temperature steam injection first pipe string |
| CN2479204Y (en) * | 2001-04-29 | 2002-02-27 | 中国石油天然气股份有限公司 | Ultra-thick oil injection-production and flushing-prevention integrated pipe column |
| CN2611601Y (en) * | 2002-05-10 | 2004-04-14 | 中国石油天然气股份有限公司 | Layered quantitative steam injection pipe column |
| CN2737941Y (en) * | 2004-10-14 | 2005-11-02 | 中国石化胜利油田有限公司采油工艺研究院 | Concentric tube separated layer gas injection tube column |
-
2005
- 2005-12-24 CN CNB2005101046643A patent/CN100343480C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4399865A (en) * | 1981-07-20 | 1983-08-23 | Chevron Research Company | Concentric steaming string downhole apparatus |
| CN2382838Y (en) * | 1999-07-19 | 2000-06-14 | 辽河石油勘探局锦州采油厂 | High temperature steam injection first pipe string |
| CN2479204Y (en) * | 2001-04-29 | 2002-02-27 | 中国石油天然气股份有限公司 | Ultra-thick oil injection-production and flushing-prevention integrated pipe column |
| CN2611601Y (en) * | 2002-05-10 | 2004-04-14 | 中国石油天然气股份有限公司 | Layered quantitative steam injection pipe column |
| CN2737941Y (en) * | 2004-10-14 | 2005-11-02 | 中国石化胜利油田有限公司采油工艺研究院 | Concentric tube separated layer gas injection tube column |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1793606A (en) | 2006-06-28 |
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| PB01 | Publication | ||
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |