CN104314496A - Retrievable packer special for polymer injection well - Google Patents
Retrievable packer special for polymer injection well Download PDFInfo
- Publication number
- CN104314496A CN104314496A CN201410406484.XA CN201410406484A CN104314496A CN 104314496 A CN104314496 A CN 104314496A CN 201410406484 A CN201410406484 A CN 201410406484A CN 104314496 A CN104314496 A CN 104314496A
- Authority
- CN
- China
- Prior art keywords
- blanking plug
- injection well
- cylindrical shell
- valve rod
- spool
- 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
- 238000002347 injection Methods 0.000 title claims abstract description 21
- 239000007924 injection Substances 0.000 title claims abstract description 21
- 229920000642 polymer Polymers 0.000 title abstract description 15
- 210000004907 gland Anatomy 0.000 claims abstract description 11
- 241000538562 Banjos Species 0.000 claims description 7
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 238000000605 extraction Methods 0.000 abstract 2
- 230000007306 turnover Effects 0.000 abstract 2
- 239000000203 mixture Substances 0.000 description 13
- 230000000903 blocking effect Effects 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 238000010008 shearing Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/06—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for setting packers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Sliding Valves (AREA)
- Valve Housings (AREA)
Abstract
The invention discloses a retrievable packer special for a polymer injection well, relates to a retrievable packer and aims to solve the problems that when the existing packer is blocked, a whole injection allocator is required to be replaced, so that the oil extraction efficiency is seriously affected and the oil extraction cost is increased. The retrievable packer is characterized in that one end of a cylinder body is connected with one end of an upper casing; a turnover pin is arranged at the middle of the upper casing in a rotating way; a torque spring sleeve is arranged in the upper casing and is positioned on one side of the turnover pin; a dropping-fishing head is inserted into the torque spring sleeve; a long compression spring sleeves the dropping-fishing head; an abutting joint is screwed at the other end of the upper casing; a lower casing is arranged at the other end of the cylinder body; a bearing gland is mounted on the lower casing in a covering way; a valve rod sequentially penetrates through the bearing gland and the lower casing and is arranged in the cylinder body; a valve element is arranged on the valve rod positioned in the cylinder body and is connected with the inner side wall of the cylinder body; the valve element is a shuttle type rod type valve element. The retrievable packer disclosed by the invention is used for oil exploitation.
Description
Technical field
The present invention relates to a kind of pulling blanking plug, be specifically related to the special pulling blanking plug of a kind of injection well, belong to valve technology field.
Background technology
Conventional polymer in injection wells device is the adjusting device that in eccentric flow regulator is fixing.Because what polymer in injection wells device adopted is the form blanking plug of routine and eccentric flow regulator are fixed together, therefore there is the drawbacks such as not replaceable, mechanical shearing is serious in conventional blanking plug.Because in injection well, the viscosity of polymer is most important for the efficiency of recovering the oil, and the viscosity of polymer is mainly by the impact of the mechanical shear stress of distributor blanking plug, shearing force is less, and it is less that polymer viscosity reduces.Often can there is the situation of the impurity blocking blanking plugs such as sand in the blanking plug due to underground work.In this case, if use traditional blanking plug, just need whole distributor to replace, have a strong impact on oil recovery efficiency, increase cost for oil production.
Summary of the invention
When the object of the invention is to solve existing blanking plug generation blocking, needing whole distributor to replace, having a strong impact on oil recovery efficiency, increasing the problem of cost for oil production.And then provide a kind of injection well special pulling blanking plug.
Technical scheme of the present invention is: the special pulling blanking plug of a kind of injection well comprises banjo fixing butt jointing, pulling head, long stage clip and torsion spring set, described blanking plug also comprises upset pin, upper shell, cylindrical shell, spool, valve rod, lower house and bearing gland, one end of cylindrical shell is connected with one end of upper shell, upset pin is rotatably arranged on the middle part of upper shell, torsion spring set is arranged in upper shell, and torsion spring set is positioned at the side of upset pin, pulling head is inserted on torsion spring set, long compression spring sleeve is contained on pulling head, banjo fixing butt jointing is screwed in the other end of upper shell, lower house is arranged on the other end of cylindrical shell, bearing gland mounts cover on lower house, valve rod is arranged in cylindrical shell through bearing gland and lower house successively, spool be arranged on be positioned at cylindrical shell valve rod on and be connected with cylindrical shell inside wall, described spool is shuttle-type rod-type spool.
The present invention compared with prior art has following effect:
1. pulling head combines with traditional blanking plug by the special blanking plug of injection well of the present invention, make when blocking occurs blanking plug runner, will not replace by whole distributor, and only directly need replace by pulling and running tool the blanking plug broken down in down-hole, the efficiency of recovering the oil is improved, and the cost simultaneously recovered the oil reduces 30-37%.
2. the present invention adopts shuttle-type rod-type spool, and compared to traditional circular arc spool, the effectively less mechanical shearing effect of spool, ensure that the concentration of polymer, thus ensure that the effect of polymer displacement of reservoir oil.
3. the present invention according to shuttle-type bar have little to polymer machinery shearing force and polymer flows through shuttle-type bar time can produce the feature of obvious pressure difference at two ends, achieve low-shearing force, blanking plug that modification scope is large.Meanwhile, because the situation that the impurity such as sand block blanking plugs often can occur the blanking plug of underground work.In this case, if use traditional blanking plug, just need whole distributor to replace, have a strong impact on oil recovery efficiency, increase cost for oil production.Present invention employs can the technology of pulling when making blocking occurs, and we only need change pulling blanking plug and just can deal with problems, and make oil recovery become more efficient, economical.
4. simple, with low cost, convenient and practical, the flexible operation of structure of the present invention, be convenient to manufacture.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Detailed description of the invention
Detailed description of the invention one: composition graphs 1 illustrates present embodiment, the special pulling blanking plug of a kind of injection well of present embodiment comprises banjo fixing butt jointing 1, pulling 2, long stage clip 3 and torsion spring set 4, described blanking plug also comprises upset pin 5, upper shell 6, cylindrical shell 7, spool 8, valve rod 9, lower house 10 and bearing gland 11, one end of cylindrical shell 7 is connected with one end of upper shell 6, upset pin 5 is rotatably arranged on the middle part of upper shell 6, torsion spring set 4 is arranged in upper shell 6, and torsion spring set 4 is positioned at the side of upset pin 5, pulling 2 is inserted on torsion spring set 4, long stage clip 3 is sleeved in pulling 2, banjo fixing butt jointing 1 is screwed in the other end of upper shell 6, lower house 10 is arranged on the other end of cylindrical shell 7, bearing gland 11 mounts cover on lower house 10, valve rod 9 is arranged in cylindrical shell 7 through bearing gland 11 and lower house 10 successively, spool 8 be arranged on be positioned at cylindrical shell 7 valve rod 9 on and be connected with cylindrical shell 7 inside wall, described spool 8 is shuttle-type rod-type spool.
The shape of cross section of the banjo fixing butt jointing 1 of present embodiment is annulus, and its outside maximum gauge is 22mm.Be convenient to cooperatively interact with existing distributor.
Cylindrical shell 7 diameter of present embodiment is 19.5mm.
Present embodiment pulling blanking plug blanking plug and eccentric flow regulator is separated to design, and docked by pulling blanking plug by butt joint with eccentric flow regulator.Can ensure like this, when blocking occurs launch-work blanking plug, the pulling of blanking plug can be carried out separately, thus ensure that the efficiency of exploitation, reduce the cost of oil recovery.
The lateral wall of cylindrical shell 7 near upper shell 6 side of present embodiment is provided with rectangular recess.Be convenient to be used in conjunction with each other with other components, ensure that the present invention rotates smoothly.
Detailed description of the invention two: composition graphs 1 illustrates present embodiment, is threaded connection between the spool 8 of present embodiment and the inside wall of cylindrical shell 7.Setting like this, is convenient to dismounting and maintenance.Other composition is identical with detailed description of the invention one with annexation.
Detailed description of the invention three: composition graphs 1 illustrates present embodiment, the spool 8 of present embodiment comprises connector 8-1 and multiple shuttle-type block 8-2, multiple shuttle-type block 8-2 is fixedly connected sequentially, connector 8-1 is fixedly installed on one end of multiple shuttle-type block 8-2, and described connector 8-1 and multiple shuttle-type block 8-2 makes one.The quantity of multiple shuttle-type block 8-2 is 4-12, and preferred amount is 6,8.Setting like this, is convenient to keep off the diverse location of two accesss 14 and the control realized polymer flow rate according to shuttle-type block 8-2.Other composition is identical with detailed description of the invention one or two with annexation.
Detailed description of the invention four: composition graphs 1 illustrates present embodiment, is threaded connection between the spool 8 of present embodiment and valve rod 9.Setting like this, is convenient to dismounting and maintenance.Other composition and annexation and detailed description of the invention one, two or three identical.
Detailed description of the invention five: composition graphs 1 illustrates present embodiment, the excircle of the lower house 10 of present embodiment is provided with rectangular channel 10-1.Setting like this, is convenient to be connected with other components on distributor.Other composition and annexation and detailed description of the invention one, two, three or four identical.
Detailed description of the invention six: composition graphs 1 illustrates present embodiment, the blanking plug of present embodiment also comprises thrust bearing 12 and radial bearing 13, and thrust bearing 12 and radial bearing 13 are sleeved on the valve rod 9 between lower house 10 and valve rod 9.Setting like this, makes whole blanking plug rotate more smooth and easy, flexible.Other composition is identical with detailed description of the invention one to five with annexation.
Detailed description of the invention seven: composition graphs 1 illustrates present embodiment, the cylindrical shell 7 of present embodiment is provided with two accesss 14.Setting like this, is convenient to ensure that the flow of polymer meets the requirements.Other composition is identical with detailed description of the invention one to six with annexation.
Operating principle of the present invention is:
Pulling 2 and traditional blanking plug combine by injection well special pulling blanking plug, use existing pulling and running tool can realize the combination with special pulling blanking plug, and then realize pulling.Blanking plug inside is then by regulating motor band ovable valve stem 9, and then band movable valve plug 8, changes the joint number (each shuttle-type block 8-2 is a joint number) of the multiple shuttle-type block 8-2s of spool between importing and exporting.And the change of spool joint number, the pressure difference between importing and exporting can be made to change, and then change the injection rate of polymer, the length of spool between importing and exporting is longer, and joint number is more, and the pressure difference between import and export is larger, and flow is less.Thus realize the control of polymer flow rate.
Although the present invention discloses as above with preferred embodiment; but and be not used to limit of the present invention; those skilled in the art can also do other changes in spirit of the present invention; and be applied in the NM field of the present invention; certainly, these changes done according to the present invention's spirit all should be included in the present invention's scope required for protection.
Claims (7)
1. the special pulling blanking plug of injection well, it comprises banjo fixing butt jointing (1), pulling head (2), long stage clip (3) and torsion spring set (4), it is characterized in that: described blanking plug also comprises upset pin (5), upper shell (6), cylindrical shell (7), spool (8), valve rod (9), lower house (10) and bearing gland (11), one end of cylindrical shell (7) is connected with one end of upper shell (6), upset pin (5) is rotatably arranged on the middle part of upper shell (6), torsion spring set (4) is arranged in upper shell (6), and torsion spring set (4) is positioned at the side of upset pin (5), pulling head (2) is inserted on torsion spring set (4), long stage clip (3) is sleeved on pulling head (2), banjo fixing butt jointing (1) is screwed in the other end of upper shell (6), lower house (10) is arranged on the other end of cylindrical shell (7), bearing gland (11) mounts cover on lower house (10), valve rod (9) is arranged in cylindrical shell (7) through bearing gland (11) and lower house (10) successively, spool (8) is arranged on the valve rod (9) being positioned at cylindrical shell (7) and goes up and be connected with cylindrical shell (7) inside wall, described spool (8) is shuttle-type rod-type spool.
2. the special pulling blanking plug of a kind of injection well according to claim 1, is characterized in that: be threaded connection between the inside wall of described spool (8) and cylindrical shell (7).
3. the special pulling blanking plug of a kind of injection well according to claim 2, it is characterized in that: described spool (8) comprises connector (8-1) and multiple shuttle-type block (8-2), multiple shuttle-type block (8-2) is fixedly connected sequentially, connector (8-1) is fixedly installed on one end of multiple shuttle-type block (8-2), and described connector (8-1) and multiple shuttle-type block (8-2) make one.
4. the special pulling blanking plug of a kind of injection well according to claim 1 or 3, is characterized in that: be threaded connection between described spool (8) and valve rod (9).
5. the special pulling blanking plug of a kind of injection well according to claim 4, is characterized in that: the excircle of described lower house (10) is provided with rectangular channel (10-1).
6. the special pulling blanking plug of a kind of injection well according to claim 1 or 5, it is characterized in that: described blanking plug also comprises thrust bearing (12) and radial bearing (13), thrust bearing (12) and radial bearing (13) are sleeved on the valve rod (9) between lower house (10) and valve rod (9).
7. the special pulling blanking plug of a kind of injection well according to claim 6, is characterized in that: described cylindrical shell (7) is provided with two accesss (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410406484.XA CN104314496B (en) | 2014-08-18 | 2014-08-18 | A kind of injection well special pulling blanking plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410406484.XA CN104314496B (en) | 2014-08-18 | 2014-08-18 | A kind of injection well special pulling blanking plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104314496A true CN104314496A (en) | 2015-01-28 |
| CN104314496B CN104314496B (en) | 2016-10-05 |
Family
ID=52369792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410406484.XA Active CN104314496B (en) | 2014-08-18 | 2014-08-18 | A kind of injection well special pulling blanking plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104314496B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878029A (en) * | 2020-09-10 | 2020-11-03 | 天津市顺泽采油设备有限公司 | Oil recovery injection allocation operation is with dragging for blanking plug |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4408662A (en) * | 1981-07-27 | 1983-10-11 | Sooner Oil Tools, Inc. | Retrievable packer for oil well casing |
| CN201025017Y (en) * | 2007-03-29 | 2008-02-20 | 大庆油田有限责任公司 | Drive convergence injection well eccentric blocker |
| CN201391299Y (en) * | 2009-03-28 | 2010-01-27 | 狄旭庆 | Injected polymer bridge type eccentric injection distribution device |
| CN201747320U (en) * | 2010-08-06 | 2011-02-16 | 董力维 | Polymer-flooding adjustable blanking plug |
| CN103306649A (en) * | 2013-07-02 | 2013-09-18 | 哈尔滨工业大学 | Blocking type electric control continuous adjustable injection allocation device for overflow polymer injection well |
-
2014
- 2014-08-18 CN CN201410406484.XA patent/CN104314496B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4408662A (en) * | 1981-07-27 | 1983-10-11 | Sooner Oil Tools, Inc. | Retrievable packer for oil well casing |
| CN201025017Y (en) * | 2007-03-29 | 2008-02-20 | 大庆油田有限责任公司 | Drive convergence injection well eccentric blocker |
| CN201391299Y (en) * | 2009-03-28 | 2010-01-27 | 狄旭庆 | Injected polymer bridge type eccentric injection distribution device |
| CN201747320U (en) * | 2010-08-06 | 2011-02-16 | 董力维 | Polymer-flooding adjustable blanking plug |
| CN103306649A (en) * | 2013-07-02 | 2013-09-18 | 哈尔滨工业大学 | Blocking type electric control continuous adjustable injection allocation device for overflow polymer injection well |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878029A (en) * | 2020-09-10 | 2020-11-03 | 天津市顺泽采油设备有限公司 | Oil recovery injection allocation operation is with dragging for blanking plug |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104314496B (en) | 2016-10-05 |
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| 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 |