CN109989724A - A kind of interior packer of High angle depth surface casing cementing pipe - Google Patents
A kind of interior packer of High angle depth surface casing cementing pipe Download PDFInfo
- Publication number
- CN109989724A CN109989724A CN201810005413.7A CN201810005413A CN109989724A CN 109989724 A CN109989724 A CN 109989724A CN 201810005413 A CN201810005413 A CN 201810005413A CN 109989724 A CN109989724 A CN 109989724A
- Authority
- CN
- China
- Prior art keywords
- ring
- claw
- lower pressure
- pipe
- 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.)
- Pending
Links
- 210000000078 claw Anatomy 0.000 claims abstract description 37
- 238000007789 sealing Methods 0.000 claims abstract description 27
- 238000012856 packing Methods 0.000 claims abstract description 18
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 4
- 239000004568 cement Substances 0.000 abstract description 6
- 239000002002 slurry Substances 0.000 abstract description 5
- 238000005553 drilling Methods 0.000 description 7
- 239000010410 layer Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 235000013580 sausages Nutrition 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B33/128—Packers; Plugs with a member expanded radially by axial pressure
- E21B33/1285—Packers; Plugs with a member expanded radially by axial pressure by fluid pressure
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)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The present invention provides a kind of interior packer of High angle depth surface casing cementing pipe, including top connection, upper press ring, packing element, connecting tube, central tube, inner sleeve, elastic claw, lower pressure ring, back ring, guide sleeve, connector and lower contact.When packer pressure is more than 80KN in the pipe, the claw of elastic claw is moved downward along guide sleeve together to contract, connecting tube, inner sleeve, elastic claw, back ring, and packing element expands under the extruding of upper press ring and lower pressure ring, it is close to surface pipe inner wall, realizes the sealing in surface pipe.After the completion of well cementation, drill string is above mentioned, packing element restores to the original state, and realizes deblocking.Reusable 10 well time of this packer or more, not only reduced costs, but be avoided that because spigot seal failure or setting insufficient pressure caused by cement slurry return accident, substantially increase surface pipe cement the well success rate.
Description
Technical field
The present invention relates to packer in pipe a kind of in petroleum oil well completion design library part editor and reuse field, especially a kind of High angle deeply feels layer
Packer in well cementation pipe.
Background technique
With the exploitation of ocean extended reach well, more and more oil/gas well needs start to orient in surface layer well section, 339.7mm
700m is deep under surface pipe, maximum hole deviation up to 70 °, deeply feel in layer well in High angle by conventional interpolation pipe mode well shaft fixing technology
Construction risk is larger, in fact it could happen that " fills caused by causing cement slurry to return because of the failure of drilling rod spigot seal or setting insufficient pressure
Sausage " or " plant flag bar " accident, affect the cementing quality of surface pipe, also cause serious work to oil/gas well later development
Journey risk and security risk, current this High angle, which deeply feels layer casing cementing, to have replacement effect using conventional rubber plug well cementation
Rate is low, cement slurry replacement amount is difficult to control, bores the problems such as rubber plug is difficult.
Summary of the invention
The shortcomings that in order to overcome conventional interpolation pipe mode well shaft fixing technology, deeply feels layer the present invention provides a kind of High angle and consolidates
Well manages interior packer, and cement slurry returns accident caused by can effectively avoid because of spigot seal failure or setting insufficient pressure, has
The success rate for improving surface pipe well cementation of effect.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of High angle depth surface casing cementing manage in packer, comprising: it is top connection, upper press ring, packing element, connecting tube, central tube, interior
Set, elastic claw, lower pressure ring, back ring, guide sleeve, connector and lower contact；Wherein, upper press ring by screw thread respectively with top connection,
Connecting tube connection, upper press ring are equipped with drainage hole；Central tube is connect by screw thread with top connection, is led between central tube and lower contact
It crosses sealing ring and realizes sealing；Connector is connect with guide sleeve and lower contact respectively by screw thread；Lower pressure ring and guide sleeve pass through spiral shell
Line connection, lower realized between pressure ring and guide sleeve by sealing ring seal；It is elastic claw between connecting tube and back ring；In lower pressure ring
Wall has annular groove, and multiple claws are uniformly distributed on elastic claw, there is protrusion on claw, in the convex portion on claw and lower pressure ring
Annular groove clamping limit cooperation；Inner sleeve is connect with connecting tube and back ring respectively by screw thread；Between connecting tube and lower pressure ring
It is realized and is sealed by sealing ring；It is packing element between upper press ring and lower pressure ring.
Above scheme further comprises:
Chamfering is had on annular groove step on lower pressure ring, is uniformly distributed 6-12 claw on elastic claw, has band to fall on claw
The protrusion at angle.
Packing element rubber is divided into three parts, and centre is separated by spacer ring.
When packer top pressure is more than certain value, the claw of elastic claw is inwardly received under external force extrusion
Contracting, is affixed to inner sleeve, connecting tube, inner sleeve, elastic claw, back ring are moved downward along guide sleeve together, and packing element is in upper press ring and pushing
It is expanded under the extruding of ring, is close to surface pipe inner wall, realize the sealing in surface pipe.
When packer carries out well cementing operation in High angle depth surface casing cementing pipe using the above scheme, which is pacified
It is placed on drilling rod sealing plug top, after drilling rod sealing plug is inserted into float collar or float shoe, is pressurizeed in well head, suffered by packer top
When pressure is more than 80KN, the claw of elastic claw, to contract, is affixed to inner sleeve, connecting tube, inner sleeve, elasticity under external force extrusion
Pawl, back ring are moved downward along guide sleeve together, and packing element expands under the extruding of upper press ring and lower pressure ring, are close in surface pipe
Wall realizes the sealing in surface pipe, and sealed pressure is more than 10MPa.After the completion of well cementation, drill string is above mentioned, in lower part drilling rod gravity
Under effect, packing element restores to the original state, and realizes deblocking.
Packer of the invention can effectively avoid conventional interpolation method well shaft fixing technology because spigot seal failure or setting pressure not
Cement slurry caused by foot returns accident, improves the success rate of surface pipe well cementation；Reusable 10 well time or more, reduces
Complete well cost, improves economic benefit.
Detailed description of the invention
Attached drawing 1 is structural schematic diagram of the invention；
Attached drawing 2 is the enlarged drawing of local I in Fig. 1.
1. top connection in figure, 2. drainage holes, 3. upper press rings, 4. packing elements, 5. connecting tubes, 6. central tubes, 7. spacer rings, 8.
Sealing ring, 9, sealing ring, 10, inner sleeve, 11. elastic claws, 12. lower pressure rings, 13. back rings, 14. guide sleeves, 15. sealing rings, 16.
Connector, 17. lower contacts.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings of the specification:
As shown in figure 1 and 2, which manages interior packer and includes top connection 1, upper press ring 3, packing element 4, connects
Adapter tube 5, central tube 6, spacer ring 7, sealing ring (8,9,15), inner sleeve 10, elastic claw 11, lower pressure ring 12, back ring 13, guide sleeve 14,
Connector 16, lower contact 17.
Wherein, upper press ring 3 is connect with top connection 1, connecting tube 5 respectively by screw thread, there is drainage hole 2, center on upper press ring 3
Pipe 6 is connect by screw thread with top connection 1, realizes sealing by sealing ring 15 between central tube 6 and lower contact 17.Connector 16 is logical
Screw thread is crossed to connect with guide sleeve 14 and lower contact 17 respectively.Lower pressure ring 12 is connect by screw thread with guide sleeve 14, lower pressure ring 12 and
Sealing is realized by sealing ring 9 between guide sleeve 14, has annular groove on lower pressure ring 12, has chamfering on the step of groove.Even
It is elastic claw 11 between adapter tube 5 and back ring 13, is uniformly distributed 6-12 claw thereon, has the protrusion with chamfering on claw, be stuck in
In the annular groove of lower pressure ring 12.Inner sleeve 10 is connect with connecting tube 5 and back ring 13 respectively by screw thread.Connecting tube 5 and lower pressure ring
Sealing is realized by sealing ring 8 between 12.It is packing element 4 between upper press ring 3 and lower pressure ring 12,4 rubber of packing element is divided into three parts, in
Between separated by spacer ring 7.
When well cementing operation, which is placed in drilling rod sealing plug top, drilling rod sealing plug is inserted into float collar or floating
After shoes, pressurize in well head, when packer top pressure is more than 80KN, the claw of elastic claw 11 is under external force extrusion
To contract, it is affixed to inner sleeve 10, connecting tube 5, inner sleeve 10, elastic claw 11, back ring 13 are moved downward along guide sleeve 14 together, glue
Cylinder 4 expands under the extruding of upper press ring 3 and lower pressure ring 12, is close to surface pipe inner wall, realizes the sealing in surface pipe, sealing
Pressure is more than 10MPa.After the completion of well cementation, drill string is above mentioned, under the drilling rod gravity of lower part, packing element 4 restores to the original state, and realizes solution
Envelope.
Claims (4)
1. a kind of High angle depth surface casing cementing manages interior packer, characterized by comprising: top connection, upper press ring, packing element, connection
Pipe, central tube, inner sleeve, elastic claw, lower pressure ring, back ring, guide sleeve, connector and lower contact；Wherein, upper press ring passes through screw thread point
It is not connect with top connection, connecting tube, upper press ring is equipped with drainage hole；Central tube is connect by screw thread with top connection, central tube and
It is realized and is sealed by sealing ring between lower contact；Connector is connect with guide sleeve and lower contact respectively by screw thread；Lower pressure ring with
Guide sleeve is connected through a screw thread, and lower realized between pressure ring and guide sleeve by sealing ring seals；It is bullet between connecting tube and back ring
Property pawl；Lower pressure ring inner wall has annular groove, and multiple claws are uniformly distributed on elastic claw, there is protrusion, the protrusion on claw on claw
Part and the annular groove clamping limit cooperation in lower pressure ring；Inner sleeve is connect with connecting tube and back ring respectively by screw thread；Connection
It is realized and is sealed by sealing ring between pipe and lower pressure ring；It is packing element between upper press ring and lower pressure ring.
2. a kind of High angle depth surface casing cementing according to claim 1 manages interior packer, it is characterised in that: on lower pressure ring
Annular groove step on have chamfering, be uniformly distributed 6-12 claw on elastic claw, there is the protrusion with chamfering on claw.
3. a kind of High angle depth surface casing cementing according to claim 1 or 2 manages interior packer, it is characterised in that: packing element
Rubber is divided into three parts, and centre is separated by spacer ring.
4. a kind of High angle depth surface casing cementing according to claim 3 manages interior packer, it is characterised in that: work as packer
When top pressure is more than certain value, the claw of elastic claw, to contract, is affixed to inner sleeve under external force extrusion, connection
Pipe, inner sleeve, elastic claw, back ring are moved downward along guide sleeve together, and packing element expands under the extruding of upper press ring and lower pressure ring, tightly
Surface pipe inner wall is pasted, realizes the sealing in surface pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810005413.7A CN109989724A (en) | 2018-01-03 | 2018-01-03 | A kind of interior packer of High angle depth surface casing cementing pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810005413.7A CN109989724A (en) | 2018-01-03 | 2018-01-03 | A kind of interior packer of High angle depth surface casing cementing pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109989724A true CN109989724A (en) | 2019-07-09 |
Family
ID=67128884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810005413.7A Pending CN109989724A (en) | 2018-01-03 | 2018-01-03 | A kind of interior packer of High angle depth surface casing cementing pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109989724A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373076A (en) * | 2014-10-28 | 2015-02-25 | 中国石油集团西部钻探工程有限公司 | Composite rubber sleeve device |
| CN105350937A (en) * | 2015-12-14 | 2016-02-24 | 天津汇铸石油设备科技有限公司 | High-seal packer |
| CN207944912U (en) * | 2018-01-03 | 2018-10-09 | 中石化石油工程技术服务有限公司 | A kind of interior packer of High angle depth surface casing cementing pipe |
-
2018
- 2018-01-03 CN CN201810005413.7A patent/CN109989724A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373076A (en) * | 2014-10-28 | 2015-02-25 | 中国石油集团西部钻探工程有限公司 | Composite rubber sleeve device |
| CN105350937A (en) * | 2015-12-14 | 2016-02-24 | 天津汇铸石油设备科技有限公司 | High-seal packer |
| CN207944912U (en) * | 2018-01-03 | 2018-10-09 | 中石化石油工程技术服务有限公司 | A kind of interior packer of High angle depth surface casing cementing pipe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206693997U (en) | A kind of oil field is every excavating technology tubing string | |
| CN207944912U (en) | A kind of interior packer of High angle depth surface casing cementing pipe | |
| CN215292438U (en) | Recyclable oil pipe bridge plug | |
| CN107893641B (en) | A kind of underground work metal packer and method | |
| CN202451113U (en) | Thermally-cleaning, wax-removing and oil layer pollution-preventing oil pumping pipe column | |
| CN201013335Y (en) | Water injection well pressure-working technique pipe column | |
| CN104088599A (en) | Expansion bridge blinding method for outer packer of cement paste filled pipe | |
| CN102071902B (en) | Drilling-free cement filling device for horizontal well | |
| CN107893642B (en) | A kind of application method of underground work metal packer | |
| CN112012688B (en) | Relay seat-sealing type packer and method | |
| CN110905442B (en) | Empty cement paste of sleeve pipe outer loop fills packer | |
| CN109989724A (en) | A kind of interior packer of High angle depth surface casing cementing pipe | |
| CN104088601A (en) | Channeling sealing tool for outer packer of cement paste filled pipe | |
| CN109899047B (en) | Tieback fracturing method and anchoring retrievable tieback fracturing shaft | |
| CN110410030B (en) | Composite material application repairing pipe column and method | |
| CN207813559U (en) | The self-priming external packer of pipe of cement | |
| CN203961897U (en) | A kind of cement paste filling tube external packer envelope is altered instrument | |
| CN115538975A (en) | Leaking stoppage oil extraction device and leaking stoppage oil extraction method for multi-point water outlet oil well | |
| CN210858651U (en) | Dissolvable special oil pipe bridge plug for under-pressure operation | |
| CN205977165U (en) | Well blanking plug of giving up | |
| CN209339905U (en) | A kind of naked eye bridge blinding tool of petroleum drilling and mining | |
| CN110469292B (en) | Circulating channeling sealing method | |
| CN107503708B (en) | Wire seal packing device | |
| CN107503709B (en) | Well cementation device of thin interlayer adjusting well | |
| CN208845139U (en) | Self-expandable packer is used in a kind of interior packet conduit well cementation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |