CN101514618A - Casing packer - Google Patents
Casing packer Download PDFInfo
- Publication number
- CN101514618A CN101514618A CNA2009100295539A CN200910029553A CN101514618A CN 101514618 A CN101514618 A CN 101514618A CN A2009100295539 A CNA2009100295539 A CN A2009100295539A CN 200910029553 A CN200910029553 A CN 200910029553A CN 101514618 A CN101514618 A CN 101514618A
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- Prior art keywords
- tube
- central tube
- central pipe
- rubber tube
- glue
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Abstract
A casing packer comprises an upper connector, a central pipe, a sealing backing ring, rubber tubes, a spacer ring, a protective cover, a rubber tube seat, a lock sleeve, a setting shear pin, a locking spring and a lower connecter, and is characterized in that the upper connector is a pipe with conicity of 43/8; the pipe and the central pipe are in threaded connection; the sealing backing ring is arranged at one end of the central pipe, which is close to the upper connector; then the protective cover, the rubber tube, the spacer ring, the rubber tube and the rubber tube seat are arranged on the central pipe in sequence; the setting shear pin fixes the rubber tube seat on the central pipe; the piston is arranged below the rubber tube seat and integrated with the central pipe; a locking spring groove is formed between the central pipe and the lock sleeve; the locking spring is arranged in the locking spring groove of the central pipe; a liquid inlet hole is formed on the central pipe; an internal button is arranged at one end of the lock sleeve and tightened with an external button of the rubber tube seat; saw-tooth threads are formed at the other end of the lock sleeve which is screwed down with the locking spring after packer setting; the rubber tube seat, the piston and the lock sleeve form a hydraulic cavity under the sealing function of the sealing ring; and the lower connector and the central pipe are in threaded connection through the pipe with conicity of 43/8.
Description
Technical field
The invention belongs to the manufacturing field of industrial gas oil down-hole cementing tool, refer more particularly to a kind of casing packer.
Background technology
Casing packer is widely used in the oil gas well cementing operation or the completion tool of oil and natural gas industry, along with the construction of carrying out oil gas well cementing operation on the stratum of presser sensor ground type is more and more, in order to guarantee the cementing quality of this type well, use casing packer, prevent or control oil by its mechanical system, gas, water is scurried mutually, thereby guarantee that the well cementation back is at the mixed slurry of cyclic flusher, leakage or has channeling do not take place in the neck slurry process, the casing packer that uses in the existing technology is by rubber tube, compositions such as mandrel and valve system, wherein valve system is by the expansion limiting valve, flap valve, shut off valve is formed, valve is that the quantity of internal valve is more, complex structure, processing is difficulty, and it is poor to exist cementing quality, weak points such as operation easier is big, and the construction time limit is long.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of simple in structure, optimal design is easy to make the casing packer that well shaft fixing technology is simplified.
A kind of casing packer of the present invention; comprise: top connection; central tube; gasket ring; packing element; spacer ring; protective cover; glue tube base; lock tube; set shear pin; snap; lower contact; it is characterized in that: top connection is 43/8 tapering pipe; use screw thread to link to each other with central tube; gasket ring is contained on the central tube near top connection one end; on central tube, load onto protective cover then successively; packing element; spacer ring; packing element; glue tube base; setting shear pin is fixed on glue tube base on the central tube; piston is housed below the glue tube base; with central tube be one; between central tube and the lock tube; one locking tray is arranged, and snap is installed in the locking tray place of central tube, and design has inlet opening on the central tube; the one end design of lock tube has interior button; tighten with the outer button of glue tube base, the other end of lock tube is the saw-tooth thread that is processed into, and is used for locking with snap behind packer setting; glue tube base and piston; lock tube forms hydraulic cavities under the sealing process of sealing ring, last lower contact is connected by 43/8 taper thread with central tube.
When construction requirement sets oil well; cementing truck is leant on interior pressurization from pipe, and pressure liquid enters in the hydraulic cavities of glue tube base, piston, lock tube composition through the inlet opening of central tube, and pressure liquid promotes packing element together with the up compression packing element of lock tube; after the packing element compression puts in place; retaining mechanism is finished setting by locked, when needs are cemented the well; by packing element after the compression and protective cover sealing annular space; after lock tube was up, the saw-tooth thread engagement locking on saw-tooth thread and the snap set thereby reach forever.
Helpful being of the present invention owing to changed the traditional design of packing element, strengthened the sealing intensity of packing element, can strengthen the impact force of packing element when well cementation, very is advantageously used in little drilling liner cementing, carries out the annular space packing.Has effect simple in structure, that volume is little, use is light, prolong application life.
Description of drawings
Fig. 1 is a structure sectional view of the present invention
In Fig. 1: 1-top connection, 2-central tube, 3-sealing ring, 4-gasket ring, 5-packing element, 6-spacer ring, 7-protective cover, 8-glue tube base, 9-sealing ring, 10-lock tube, 11-sealing ring, 12-set shear pin, 13-snap, 14-lower contact.
The specific embodiment
Further specify the specific embodiment of the present invention below in conjunction with Figure of description.
A kind of casing packer of the present invention; comprise: top connection 1; central tube 2; sealing ring 3; gasket ring 4; packing element 5; spacer ring 6; protective cover 7; glue tube base 8; sealing ring 9; lock tube 10; sealing ring 11; set shear pin 12; snap 13; lower contact 14; it is characterized in that: top connection 1 is 43/8 tapering pipe; use screw thread to link to each other with central tube 2; gasket ring 4 is contained on the central tube 2 near top connection 1 one ends; on central tube 2, load onto protective cover 7 then successively; packing element 5; spacer ring 6; packing element 5; glue tube base 8; setting shear pin 12 is fixed on glue tube base 8 on the central tube 2; below the glue tube base 8 piston is housed; with central tube 2 be one; between central tube 2 and the lock tube 10; one locking tray is arranged; snap 13 is installed in the locking tray place of central tube 2; design has inlet opening on the central tube 2; the one end design of lock tube 10 has interior button; tighten with the outer button of glue tube base 8; the other end of lock tube 10 is the saw-tooth thread that is processed into; be used for behind packer setting, locking with snap 13; glue tube base 8 and piston; lock tube 10 is at sealing ring 3; 9; 11 sealing process forms hydraulic cavities down, and last lower contact 14 is connected by 43/8 taper thread with central tube 2.
When construction requirement sets oil well; cementing truck is leant on interior pressurization from pipe; pressure liquid enters in the hydraulic cavities of glue tube base 8, piston and lock tube 10 compositions through the inlet opening of central tube 2; pressure liquid promotes glue tube base together with lock tube 10 up compression packing elements 5; after packing element 5 compressions put in place; retaining mechanism is by locked; finish and set; when needs are cemented the well; by packing element 5 after the compression and protective cover 7 sealing annular spaces; after lock tube 10 was up, the saw-tooth thread engagement locking on saw-tooth thread and the snap set thereby reach forever.
Claims (1)
1; a kind of casing packer; comprise: top connection; central tube; gasket ring; packing element; spacer ring; protective cover; glue tube base; lock tube; set shear pin; snap; lower contact; it is characterized in that: top connection is 43/8 tapering pipe; use screw thread to link to each other with central tube; gasket ring is contained on the central tube near top connection one end; on central tube, load onto protective cover then successively; packing element; spacer ring; packing element; glue tube base; setting shear pin is fixed on glue tube base on the central tube; piston is housed below the glue tube base; with central tube be one; between central tube and the lock tube; one locking tray is arranged, and snap is installed in the locking tray place of central tube, and design has inlet opening on the central tube; the one end design of lock tube has interior button; tighten with the outer button of glue tube base, the other end of lock tube is the saw-tooth thread that is processed into, and locks with snap behind packer setting; glue tube base and piston; lock tube forms hydraulic cavities under the sealing process of sealing ring, lower contact is connected by 43/8 taper thread with central tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100295539A CN101514618A (en) | 2009-03-27 | 2009-03-27 | Casing packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100295539A CN101514618A (en) | 2009-03-27 | 2009-03-27 | Casing packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101514618A true CN101514618A (en) | 2009-08-26 |
Family
ID=41039223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100295539A Pending CN101514618A (en) | 2009-03-27 | 2009-03-27 | Casing packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101514618A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748984B (en) * | 2009-12-13 | 2012-09-12 | 西南石油大学 | Automatically controlled well blowout preventer mounted in drilling column |
| CN104246116A (en) * | 2012-03-30 | 2014-12-24 | 韦尔泰克有限公司 | An annular barrier with a seal |
| CN105257239A (en) * | 2015-10-26 | 2016-01-20 | 中国石油集团西部钻探工程有限公司 | External casing packer |
| CN107503709A (en) * | 2017-07-07 | 2017-12-22 | 中石化石油工程技术服务有限公司 | A kind of cementing unit of thin interlayer adjustment well |
| CN107503708A (en) * | 2017-07-07 | 2017-12-22 | 中石化石油工程技术服务有限公司 | A kind of linear sealing packing device |
| CN111502585A (en) * | 2019-01-30 | 2020-08-07 | 中国石油天然气股份有限公司 | Internal sealing tool for fireflooding |
-
2009
- 2009-03-27 CN CNA2009100295539A patent/CN101514618A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748984B (en) * | 2009-12-13 | 2012-09-12 | 西南石油大学 | Automatically controlled well blowout preventer mounted in drilling column |
| CN104246116A (en) * | 2012-03-30 | 2014-12-24 | 韦尔泰克有限公司 | An annular barrier with a seal |
| US9963952B2 (en) | 2012-03-30 | 2018-05-08 | Welltec A/S | Annular barrier with a seal |
| CN105257239A (en) * | 2015-10-26 | 2016-01-20 | 中国石油集团西部钻探工程有限公司 | External casing packer |
| CN105257239B (en) * | 2015-10-26 | 2018-10-09 | 中国石油集团西部钻探工程有限公司 | External packer of pipe |
| CN107503709A (en) * | 2017-07-07 | 2017-12-22 | 中石化石油工程技术服务有限公司 | A kind of cementing unit of thin interlayer adjustment well |
| CN107503708A (en) * | 2017-07-07 | 2017-12-22 | 中石化石油工程技术服务有限公司 | A kind of linear sealing packing device |
| CN107503708B (en) * | 2017-07-07 | 2023-04-25 | 中石化石油工程技术服务有限公司 | Wire seal packing device |
| CN107503709B (en) * | 2017-07-07 | 2023-04-28 | 中石化石油工程技术服务有限公司 | Well cementation device of thin interlayer adjusting well |
| CN111502585A (en) * | 2019-01-30 | 2020-08-07 | 中国石油天然气股份有限公司 | Internal sealing tool for fireflooding |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20090826 |