CN2839554Y - Anti-creeping expanding water injection plugging device - Google Patents
Anti-creeping expanding water injection plugging device Download PDFInfo
- Publication number
- CN2839554Y CN2839554Y CN 200520084331 CN200520084331U CN2839554Y CN 2839554 Y CN2839554 Y CN 2839554Y CN 200520084331 CN200520084331 CN 200520084331 CN 200520084331 U CN200520084331 U CN 200520084331U CN 2839554 Y CN2839554 Y CN 2839554Y
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- CN
- China
- Prior art keywords
- packer
- expanding type
- pressure
- seat
- creeping
- 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
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The utility model relates to an anti-creeping expanding type water injection packer which is composed of a seat unsealing mechanism, an upper expanding type packer, a pressure transmitting joint, a one-way seal inspecting valve and a lower expanding type packer, wherein the seat unsealing mechanism, the upper expanding type packer, the pressure transmitting joint and the lower expanding type packer are connected in sequence, and the one-way seal inspecting valve is installed on the pressure transmitting joint. When a water injecting well stops injecting water, under the action of the seat unsealing mechanism, the inner pressure of rubber barrels of the upper and the lower expanding type packers are not changed, and the rubber barrels can not shrink, so that the rubber barrels can not be damaged because of repeated expansion and shrink. When unsealing is carried out, a well is back flushed, well flushing pressures from the seat unsealing mechanism to ensure that pressure in the rubber barrels of the upper and the lower expanding type packers is discharged to realize unsealing. The sealing property of the packer can be inspected, and the working quality of water injecting wells can be guaranteed. After pressure enters the pressure transmitting joint, the lower part of the upper expanding type packer and the upper part of the lower expanding type packer are balanced, so that the creeping of pipe columns can be prevented and the damage of rubber barrels caused by the creeping of pipe columns can be avoided.
Description
One, technical field
The utility model is a kind of oil-field flooding packer, particularly a kind of anticreep expanding water injection packer.
Two, background technology
The expanding water injection packer that oil-field flooding is used is that packing element expands outwardly when the packing element internal pressure is higher than the packing element external pressure, realizes the purpose of sealing oil casing annular space.In the time will in well, tripping out the expanding water injection packer, need the packing element internal pressure to be equal to or less than the packing element external pressure, packing element is shunk.For the packing element external and internal pressure is changed, the expanding water injection packer is provided with the injection channel.But the injection channel of present expanding water injection packer is two-way, and after well stopped to annotate for some reason, the packing element internal pressure descended, and packing element shrinks.When recovering water filling, the packing element internal pressure rises, the packing element expansion.If when stopping for some reason to annotate often, packing element shrinks repeatedly, just expands and damage easily.The patent No. is 00202259.1 the bloated envelope of pressure reduction backwash desealed water injection packer, and the injection channel is unidirectional when not having anti-flushing well, after can avoiding stopping for some reason annotating, packing element shrinks, the problem of expanding again during water filling can avoid packing element to damage, but this packer can not be anticreep again.When water injection well stopped for some reason to annotate and recovers water filling, water injection string can extend and shorten, and promptly tubing string produces and wriggles, when tubing string produces wriggling, because not withdrawal of packing element, and produce friction between the sleeve pipe, make packing element shear failure.The old water injection well sleeve pipe that has has damage, fouling, or operating worker operation is not steady, and packer is damaged in the process of going into the well easily, and packer can not Sealed casing pipe during water filling, ground can't verify again whether the packer that is lowered to damages, and does not reach the purpose of seperated layer water injection.
Three, summary of the invention
The purpose of this utility model designs a kind of anticreep expanding water injection packer at above-mentioned the deficiencies in the prior art exactly, make its reliable operation, the contraction, the expansion that occur when avoiding packing element to stop annotating for some reason, improve packing element application life, and can prevent to stop for some reason to annotate the tubing string wriggling of generation, can also in well, whether seal by checking sealing of packer.
The purpose of this utility model be achieved in that it by seat separate sealing mechanism, go up inflatable packer, the pressure transmission joint, unidirectionally test the envelope valve, inflatable packer is formed down.Seat is separated sealing mechanism and is connected with last inflatable packer top, and last inflatable packer bottom connects with pressure transmission joint top, and pressure transmission joint bottom connects with following inflatable packer top, and the unidirectional envelope valve of testing is installed on the pressure transmission joint.Between interior pipe in the upper and lower inflatable packer and the packing element pressure transmission passage is arranged, this pressure transmission passage is identical with prior art, and the interior interior pipe of the upper and lower inflatable packer of UNICOM and the passage of the pressure transmission passage between the packing element are arranged on the pressure transmission joint.During water filling, under the choke valve effect on the water injection string, press in the packer and be higher than external pressure, injecting water separates sealing mechanism through seat and enters in the interior pipe and the pressure transmission passage between the packing element in the upper and lower inflatable packer, make the packing element Expansion sealing oil casing annular space on upper packer, the lower packet, when the oil pipe internal pressure continues to raise, the unidirectional envelope valve of testing on the pressure transmission joint is opened, injecting water enters in the sleeve pipe between the upper and lower inflatable packer, if pressure does not descend, prove that upper and lower inflatable packer seals, normally water filling.When water injection well stops annotating for some reason, present separating under the effect of sealing mechanism, the packing element chamber pressure of upper and lower inflatable packer remains unchanged, and packing element can not shrink, and therefore, packing element can not damage because of expanding repeatedly, shrinking, and can improve the application life of packer.During deblocking, anti-flushing well, well-flushing pressure is separated sealing mechanism from seat and is entered, and the interior pressure of packing element of upper and lower inflatable packer is discharged, and realizes deblocking.
The beneficial effects of the utility model are: packing element can not damage because of expanding repeatedly, shrinking, and can improve the application life of packer.Sealing that can checking sealing of packer can guarantee the water injection well operation quality.After outside pressure enters the pressure transmission joint, the top of the bottom of last inflatable packer and following inflatable packer is balance, can prevent the tubing string wriggling, the damage of having avoided packing element to cause because of the tubing string wriggling.
Four, description of drawings
Accompanying drawing is the assembling drawing of the utility model embodiment.
Five, the specific embodiment
Below in conjunction with accompanying drawing the utility model embodiment is described.
Among the figure: the 1st, seat is separated sealing mechanism, and the 2nd, last inflatable packer, the 3rd, pressure transmission joint, the 4th, the unidirectional envelope valve of testing, the 5th, following inflatable packer.Be the utility model by seat separate sealing mechanism 1, go up inflatable packer 2, pressure transmission joint 3, unidirectionally test envelope valve 4, inflatable packer 5 is formed down.Seat is separated sealing mechanism 1 and is connected with last inflatable packer 2 tops, and last inflatable packer 2 bottoms connect with pressure transmission joint 3 tops, and pressure transmission joint 3 bottoms connect with following inflatable packer 5 tops, and the unidirectional envelope valve 4 of testing is installed on the pressure transmission joint 3.Between interior pipe in the upper and lower inflatable packer and the packing element pressure transmission passage is arranged, this pressure transmission passage is identical with prior art, and the interior interior pipe of the upper and lower inflatable packer of UNICOM and the passage A of the pressure transmission passage between the packing element are arranged on the pressure transmission joint 3.During water filling, under the choke valve effect on the water injection string, press in the packer and be higher than external pressure, injecting water separates sealing mechanism 1 through seat and enters in the interior pipe and the pressure transmission passage between the packing element in the upper and lower inflatable packer, make the packing element Expansion sealing oil casing annular space on upper packer, the lower packet, when the oil pipe internal pressure continues to raise, the unidirectional envelope valve 4 of testing on the pressure transmission joint 3 is opened, injecting water enters in the sleeve pipe between the upper and lower inflatable packer, if pressure does not descend, prove that upper and lower inflatable packer seals, normally water filling.When water injection well stops annotating for some reason, present separating under the effect of sealing mechanism 1, the packing element chamber pressure of upper and lower inflatable packer remains unchanged, and packing element can not shrink, and therefore, packing element can not damage because of expanding repeatedly, shrinking, and can improve the application life of packer.During deblocking, anti-flushing well, well-flushing pressure is separated sealing mechanism 1 from seat and is entered, and the interior pressure of packing element of upper and lower inflatable packer is discharged, and realizes deblocking.
Claims (1)
1, a kind of anticreep expanding water injection packer, by seat separate sealing mechanism (1), go up inflatable packer (2), pressure transmission joint (3), unidirectionally test envelope valve (4), inflatable packer (5) is formed down, it is characterized in that: seat is separated sealing mechanism (1) and is connected with last inflatable packer (2) top, last inflatable packer (2) bottom connects with pressure transmission joint (3) top, pressure transmission joint (3) bottom connects with following inflatable packer (5) top, and pressure transmission joint (3) is gone up the unidirectional envelope valve (4) of testing is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520084331 CN2839554Y (en) | 2005-06-16 | 2005-06-16 | Anti-creeping expanding water injection plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520084331 CN2839554Y (en) | 2005-06-16 | 2005-06-16 | Anti-creeping expanding water injection plugging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2839554Y true CN2839554Y (en) | 2006-11-22 |
Family
ID=37427538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520084331 Expired - Fee Related CN2839554Y (en) | 2005-06-16 | 2005-06-16 | Anti-creeping expanding water injection plugging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2839554Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953310A (en) * | 2014-05-18 | 2014-07-30 | 中国石油化工股份有限公司 | Toothless support packer |
| CN113294120A (en) * | 2021-07-26 | 2021-08-24 | 东营市兆鑫工贸有限责任公司 | Complementary combined expansion type packer |
-
2005
- 2005-06-16 CN CN 200520084331 patent/CN2839554Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953310A (en) * | 2014-05-18 | 2014-07-30 | 中国石油化工股份有限公司 | Toothless support packer |
| CN113294120A (en) * | 2021-07-26 | 2021-08-24 | 东营市兆鑫工贸有限责任公司 | Complementary combined expansion type packer |
| CN113294120B (en) * | 2021-07-26 | 2021-10-01 | 东营市兆鑫工贸有限责任公司 | Complementary combined expansion type packer |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061122 |