CN1995698A - Fire-flooding layered gas-injection method - Google Patents
Fire-flooding layered gas-injection method Download PDFInfo
- Publication number
- CN1995698A CN1995698A CN 200610134969 CN200610134969A CN1995698A CN 1995698 A CN1995698 A CN 1995698A CN 200610134969 CN200610134969 CN 200610134969 CN 200610134969 A CN200610134969 A CN 200610134969A CN 1995698 A CN1995698 A CN 1995698A
- Authority
- CN
- China
- Prior art keywords
- vapour
- gas injection
- injection
- tubular column
- packer
- 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.)
- Granted
Links
Images
Landscapes
- Processing Of Solid Wastes (AREA)
- Pipe Accessories (AREA)
Abstract
The invention relates to a fire-flooding oil recovery layer gas (steam) injection method for oil and gas (steam) recovery in oil well. It is realized by layer gas (steam) injection tubular column in fire-flooding oil recovery process. The tubular column comprises well cylinder, tubular column, packer, underground layer gas (steam) converting device, fixed valve body, tubular active valve core and cone active valve core. The method is realized by tubular column structure of lower layer gas (steam) process and tubular column structure of upper layer gas (steam) process. The difference in them is that tubular active valve core is set in the tubular column structure of lower layer gas (steam) process and cone active valve core is set in the tubular column structure of upper layer gas (steam) process. Upper and lower layer tubular column structures also comprises converting device, packer. Upper and lower ends of the fixed valve body in converting device are screwed with upper and lower of gas (steam) injection tubular column and packer by 11A and 11B. The method solves following problems that multi-layer general gas (steam) injection in prior technology can not satisfy development demand and sleeve and oil tube for multi-layer general gas (steam) injection can be destroyed easily because of change of temperature and pressure.
Description
Technical field:
The present invention relates to the method for the fire flood layered gas-injection (vapour) of a kind of well recovery gas production (vapour) usefulness.
Background technology:
Oilfield recovers the oil and generally adopts gas injection (vapour) method on fire flood steam injection preheating stratum at present, be general gas injection (vapour), can not realize layered gas-injection (vapour), selectivity gas injection (vapour), there is following shortcoming in said method: the general gas injection of multilayer (vapour), can not satisfy the demand of development scheme; The layering steam injection can not all adopt oil pipe to inject to upper formation, as adopting sleeve pipe, the injection of oil pipe annular space certainly will cause the variation of oil well casing Yin Wendu, pressure and damaging, scraps until oil well.
Summary of the invention:
The object of the invention is to provide gas injection (vapour) method on a kind of fire flood steam injection preheating stratum, and this method has solved the general gas injection of the multilayer that exists in the prior art (vapour), can not satisfy the demand of development scheme; The layering steam injection can not all adopt oil pipe to inject to upper formation, as adopting sleeve pipe, oil pipe annular space to inject certainly will to cause the variation of oil well casing Yin Wendu, pressure and damage, and the problem of scrapping until oil well.
The technical solution adopted for the present invention to solve the technical problems is: gas injection (vapour) method on fire flood steam injection preheating stratum, be that oil extraction gas injection (vapour) well is in the process of layered gas-injection (vapour), upper and lower layer all can pass through the oil pipe steam injection, but the method for layered gas-injection (vapour) is easily changed in all gas injections of oil pipe or oil jacket annular space, distribution.This method realizes that by layered gas-injection (vapour) tubing string in the fire flood process this tubing string is made up of pit shaft, tubing string, packer, laminated distributor under well gas injection (vapour) conversion equipment, fixed valve body, tubular movable spool, taper activity spool; This method is realized by lower floor's gas injection (vapour) process tubular column structure and upper strata gas injection (vapour) process tubular column structure: be provided with through hole on the fixed valve body sidewall in laminated distributor under well gas injection (vapour) conversion equipment, the fixed valve body two ends are communicated with by a latus rectum, latus rectum is interior from last big, two-stage annular slope step is arranged down for a short time, the inner eyelet of through hole is positioned on the annular slope step surface on the standing valve side, tubular movable spool is rendered in lower floor's gas injection (vapour) process tubular column structure, taper activity spool is rendered in upper strata gas injection (vapour) the process tubular column structure, on the annular slope step, rise and isolate about two movable spools are respectively seated at, sealing function.Wherein tubular movable spool is seated and is used for sealing and fixing body wall through hole on the annular slope step, and is communicated with fixed valve body space up and down; Taper activity spool is seated down and is used for the shutoff lower space on the annular slope step, and makes the inside and outside connection in giving vent to anger on the fixed valve body sidewall (vapour) hole; The upper end 11A of laminated distributor under well gas injection (vapour) conversion equipment is connected with gas injection tubing string, packer thread respectively with lower end 11B.Tubular movable spool, taper activity spool are independent movable, pick up in pit shaft by steel wire operation, and the mode of being located is a throw-in type, are released on the ring-shaped step that pit shaft is seated in fixed valve body.
The invention has the beneficial effects as follows, the invention provides and a kind ofly can realize upper and lower respectively distribution, the gas injection of oil jacket annular space, by the method that the preheating igniting fire flood is carried out in the oil pipe steam injection, it has not only solved the demand that the general gas injection of the multilayer that exists in the prior art (vapour) can not be satisfied development scheme; The layering steam injection is injected as adopting sleeve pipe, oil pipe annular space, cause oil well casing Yin Wendu, pressure to change and damage, the problem of scrapping until oil well, and be implemented in the fireflood air injection process and each layer adjusted arbitrarily according to actual conditions, the requirement of expiring test traffic in the air injection process simultaneously again, can easily and efficiently movable spool be thrown in and salvage, for condition has been created in each oil reservoir burning of meticulous adjustment.
Description of drawings:
Fig. 1 is lower floor of the present invention gas injection (vapour) process tubular column structure schematic diagram.
Fig. 2 is upper strata of the present invention gas injection (vapour) process tubular column structure schematic diagram.
Among the figure, 1, pit shaft, 2, tubing string, 3, packer, 4, laminated distributor under well gas injection (vapour) conversion equipment, 5, fixed valve body, 6, tubular movable spool, 7, taper activity spool, 11A, 11B are joint.
The specific embodiment:
In Fig. 1, gas injection (vapour) method on fire flood steam injection preheating stratum, realize that by layered gas-injection (vapour) tubing string in the fire flood process this tubing string is made up of pit shaft 1, tubing string 2, packer 3, laminated distributor under well gas injection (vapour) conversion equipment 4, fixed valve body 5, tubular movable spool 6, taper activity spool 7; This method is to be realized with upper strata gas injection (vapour) process tubular column structure by lower floor's gas injection (vapour) process tubular column structure: different is throws in tubular movable spool 6 in lower floor's gas injection (vapour) process tubular column structure for both, and in upper strata gas injection (vapour) process tubular column structure, throw in taper activity spool 7, other component are all identical; In lower floor's gas injection (vapour) process tubular column structure, be provided with laminated distributor under well gas injection (vapour) conversion equipment 4 and comprise fixed valve body 5 and tubular movable spool 6 and packer 3; 3 envelopes of packer are not communicated with levels, the upper and lower side of the fixed valve body 5 in laminated distributor under well gas injection (vapour) conversion equipment 4 is respectively by joint 11A, joint 11B, go up with gas injection (vapour) tubing string 2, be threaded with packer 3 down, tubular movable spool 6 is seated on the fixed valve body 5 upper, annular incline benches, sealing and fixing valve body 5 sidewall through holes, and make space connection up and down.In gas injection (vapour) process, what no matter inject is that vapours or air enter lower layer space by latus rectum, packer 3 in gas injection (vapour) tubing string 2, the tubular movable spool 6, realizes the purpose of lower floor's gas injection (vapour) like this.
In Fig. 2, in upper strata gas injection (vapour) process tubular column structure, be provided with laminated distributor under well gas injection (vapour) conversion equipment 4 and comprise fixed valve body 5 and taper activity spool 7 and packer 3; 3 envelopes of packer are not communicated with levels, the upper and lower side of the standing valve 5 in laminated distributor under well gas injection (vapour) conversion equipment 4 is respectively by joint 11A, joint 11B, go up with gas injection (vapour) tubing string 2, be threaded with packer 3 down, taper activity spool 7 is seated on the fixed valve body 5 upper, annular incline benches, the shutoff lower layer space.To in the upper strata steam injection process, vapours enters sheaf space by the sidewall through hole of gas injection (vapour) tubing string 2, standing valve 5 like this, realizes the purpose to the upper strata steam injection.Air injection can not influence finishing of lower layer space gas injection (vapour) by oil jacket annular injection air.
Claims (1)
1, the method for a kind of fire flood layered gas-injection (vapour) realizes by layered gas-injection (vapour) tubing string in the fire flood process, and this tubing string is made up of pit shaft (1), tubing string (2), packer (3), laminated distributor under well gas injection (vapour) conversion equipment 4, fixed valve body 5, tubular movable spool 6, taper activity spool (7); It is characterized in that: this method is to be realized with upper strata gas injection (vapour) process tubular column structure by lower floor's gas injection (vapour) process tubular column structure: different is throws in tubular movable spool (6) in lower floor's gas injection (vapour) process tubular column structure for both, and in upper strata gas injection (vapour) process tubular column structure, throw in taper activity spool (7), other component are all identical; In lower floor's gas injection (vapour) process tubular column structure, be provided with laminated distributor under well gas injection (vapour) conversion equipment (4) and comprise fixed valve body (5) and tubular movable spool (6) and packer (3); Packer (3) seat envelope is not communicated with levels, the upper and lower side of the standing valve (5) in laminated distributor under well gas injection (vapour) conversion equipment (4) is respectively by joint 11A, joint 11B, go up with gas injection (vapour) tubing string (2), be threaded with packer (3) down, tubular movable spool (6) is seated on fixed valve body (5) the upper, annular incline bench, sealing and fixing valve body (5) sidewall through hole, and make space connection up and down.In gas injection (vapour) process, what no matter inject is that vapours or air enter lower layer space by gas injection (vapour) tubing string (2), the interior latus rectum of tubular movable spool (6), packer (3) like this, realizes the purpose of lower floor's gas injection (vapour); In upper strata gas injection (vapour) process tubular column structure, be provided with laminated distributor under well gas injection (vapour) conversion equipment (4) and comprise fixed valve body (5) and taper activity spool (7) and packer (3); Packer (3) seat envelope is not communicated with levels, the upper and lower side of the standing valve (5) in laminated distributor under well gas injection (vapour) conversion equipment (4) is respectively by joint 11A, joint 11B, go up with gas injection (vapour) tubing string (2), be threaded with packer (3) down, taper activity spool (7) is seated on fixed valve body (5) the lower annular incline bench, the shutoff lower layer space; To in the upper strata steam injection process, vapours enters sheaf space by the sidewall through hole of gas injection (vapour) tubing string (2), standing valve (5) like this, realizes the purpose to the upper strata steam injection.Air injection can not influence finishing of lower layer space gas injection (vapour) by oil jacket annular injection air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101349693A CN100572746C (en) | 2006-12-18 | 2006-12-18 | The method of fire flood layering steam injection and air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101349693A CN100572746C (en) | 2006-12-18 | 2006-12-18 | The method of fire flood layering steam injection and air |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1995698A true CN1995698A (en) | 2007-07-11 |
| CN100572746C CN100572746C (en) | 2009-12-23 |
Family
ID=38250872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101349693A Expired - Fee Related CN100572746C (en) | 2006-12-18 | 2006-12-18 | The method of fire flood layering steam injection and air |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100572746C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080524A (en) * | 2010-12-22 | 2011-06-01 | 中国石油天然气集团公司 | Layered electric ignition method for multilayer gas injection of fire flood |
| CN102102506A (en) * | 2010-12-22 | 2011-06-22 | 中国石油天然气集团公司 | Fire flooding oil extraction layered steam injection method and separate injection tubular column adopted by same |
| CN102587880A (en) * | 2012-03-05 | 2012-07-18 | 中国石油天然气股份有限公司 | Oil recovery method |
| CN107387048A (en) * | 2017-08-03 | 2017-11-24 | 中国石油天然气股份有限公司 | Gas injection well runner conversion device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4243098A (en) * | 1979-11-14 | 1981-01-06 | Thomas Meeks | Downhole steam apparatus |
-
2006
- 2006-12-18 CN CNB2006101349693A patent/CN100572746C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080524A (en) * | 2010-12-22 | 2011-06-01 | 中国石油天然气集团公司 | Layered electric ignition method for multilayer gas injection of fire flood |
| CN102102506A (en) * | 2010-12-22 | 2011-06-22 | 中国石油天然气集团公司 | Fire flooding oil extraction layered steam injection method and separate injection tubular column adopted by same |
| CN102080524B (en) * | 2010-12-22 | 2013-04-17 | 中国石油天然气集团公司 | Layered electric ignition method for multilayer gas injection of fire flood |
| CN102587880A (en) * | 2012-03-05 | 2012-07-18 | 中国石油天然气股份有限公司 | Oil recovery method |
| CN102587880B (en) * | 2012-03-05 | 2014-11-05 | 中国石油天然气股份有限公司 | Oil recovery method |
| CN107387048A (en) * | 2017-08-03 | 2017-11-24 | 中国石油天然气股份有限公司 | Gas injection well runner conversion device |
| CN107387048B (en) * | 2017-08-03 | 2019-09-10 | 中国石油天然气股份有限公司 | Gas injection well runner conversion device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100572746C (en) | 2009-12-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102979495B (en) | Many bunches of Limited entry fracturing tubing strings of open-hole horizontal well and fracturing process thereof | |
| CN104755697B (en) | The wellbore apparatus and method of sand control are carried out using gravel reserve | |
| CN101395339B (en) | Method and apparatus to cement a perforated casing | |
| CN201902202U (en) | Staged fracturing string of oil-gas horizontal well | |
| CN104420835B (en) | Multi-cluster perforation fracturing well completion pipe string and construction method | |
| CN202370489U (en) | Parallel double-pipe gas-lift production process pipe column | |
| CN108625830B (en) | Ball throwing type layering sand prevention process pipe column and method thereof | |
| CN103184867B (en) | Packer jetting tool ground simulation method suitable for multistage hydraulic jetting fracturing | |
| CN1995698A (en) | Fire-flooding layered gas-injection method | |
| CN103075139A (en) | Immovable pipe column hydraulic jet process for fracture acidizing and pipe column thereof | |
| CN106761538A (en) | Long packing element packer for oil field isolation | |
| CN205243488U (en) | Sand control, notes vapour integrated device | |
| CN206376810U (en) | Long packing element packer for oil field isolation | |
| CN107476793B (en) | Deep shale gas fracturing pipe column and fracturing process method | |
| CN216553884U (en) | Reverse gravel filling device | |
| CN112240190B (en) | Segmented reconstruction device for open hole segmented well completion and operation method thereof | |
| CN210660025U (en) | Sand setting type double-acting valve | |
| CN200985769Y (en) | Lifting oil layer switch | |
| CN110735619B (en) | Single-layer extrusion filling pipe column in multiple oil layers | |
| CN109826587B (en) | Large-drift-diameter water-proof oil extraction packer and operation method thereof | |
| CN203114261U (en) | Supporting type high-pressure layering water injection tubular column | |
| CN103185655B (en) | Sealing test method suitable for hydraulic jet packing tool | |
| CN200992999Y (en) | Fire flooding stratified downhole gas (steam) injection converting device | |
| CN201310317Y (en) | Half-way well cementing tool without drilling plug | |
| CN201486542U (en) | Separable separate-layer fracturing process pipe column |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20091223 Termination date: 20141218 |
|
| EXPY | Termination of patent right or utility model |