CN2764930Y - Inside gushing proof device of throttling control drilling tool - Google Patents
Inside gushing proof device of throttling control drilling tool Download PDFInfo
- Publication number
- CN2764930Y CN2764930Y CN 200420105386 CN200420105386U CN2764930Y CN 2764930 Y CN2764930 Y CN 2764930Y CN 200420105386 CN200420105386 CN 200420105386 CN 200420105386 U CN200420105386 U CN 200420105386U CN 2764930 Y CN2764930 Y CN 2764930Y
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- China
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- endoporus
- diameter
- hole
- urceolus
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- Expired - Fee Related
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Abstract
The utility model relates to an inner blowout preventer of a throttling control drilling tool, which belongs to the technical field of a drilling tool of a drilling well. The utility model has the technical scheme to solve the technical problem that the utility model comprises an outer cylinder, a valve core and a slide valve. The first section of an inner hole of the outer cylinder is a reverse conical hole with an internal thread. The second section of the inner hole is a circular hole of which the inner diameter is equal to the diameter of the lower end of the reverse conical hole. The third section of the inner hole is a reverse conical hole. The fourth section of the inner hole is a circular hole of which the inner diameter is equal to the diameter of the lower end of the reverse conical hole of the third section. The fifth section and the sixth section of the inner hole are circular holes the diameters of which are greater than the inner diameter of the fourth section, and a slide valve cylinder is positioned between the fifth section and the sixth section of the inner hole of the outer cylinder. The lower section of the inner hole of the slide valve cylinder is a conical hole, the upper section of the inner hole of the slide valve cylinder is a throttling channel and a pressure transmission hole is arranged on the wall of the reverse conical hole. The slide valve is arranged between the slide valve cylinder and the fourth section and the fifth section of the inner hole of the outer cylinder, and the spring is arranged between the lower section of the slide valve and the upper end surface of the fifth section of the inner hole of the outer cylinder. The utility model can be applied to a petroleum-gas drilling well and has the advantages that the structure is simple, mud can be automatically poured into the drilling tool to realize the pressure equilibrium and the occurrence of well blowout can be prevented.
Description
Technical field
The utility model belongs to the well drilling tool technical field.
Background technology
In the oil and gas well drilling operation, in when, when making a trip overflow taking place, if in drilling tool, there is not inner blowout preventer, blowout out of control easily takes place, for this reason, load onto the flechette-type back-pressure valve in the drilling tool bottom in the construction, existing flechette-type back-pressure valve, under be in normally off when boring, the mud of down-hole can not enter in the above drilling tool of back-pressure valve, mud pressure outside the drilling tool is during greater than the pressure in the drilling tool, to reach balance in order making in the drilling tool, must to stop halfway boring down and inject mud in the drilling tool more than back-pressure valve, waste time and energy with the outer pressure of drilling tool, increase cost of production, and had hidden danger.
Summary of the invention
Technical problem to be solved provides a kind of mud that can allow and pours into drilling tool automatically to realize pressure balanced throttling control drilling tool inner blowout preventer when drilling tool is to the down-hole down.
The technical scheme that solves its technical problem is as follows: throttling control drilling tool inner blowout preventer comprises urceolus, spool and guiding valve; The urceolus appearance is divided into two sections, and its hypomere is connected with next section drilling rod with this for externally threaded inverted cone is arranged; The endoporus of urceolus is divided into six sections, from top to bottom, first section is female up big and down small rounding taper hole on it, be connected with a last joint drilling rod with this conical bore, second section of endoporus has interior spiral shell mosquito for the circular hole that internal diameter equals rounding taper hole lower end diameter on it, the 3rd section rounding taper hole that equals second section diameter of endoporus for its upper end diameter of endoporus, the 4th section circular hole that equals the 3rd section rounding taper hole lower end diameter for diameter of endoporus, the 5th section circular hole that is its diameter greater than the 4th section diameter of endoporus, the 6th section circular hole that equals the 5th section diameter for its diameter of endoporus; Valve barrel is between the 5th section and the 6th section of urceolus endoporus, the endoporus of valve barrel is divided into two sections, the endoporus hypomere is up-small and down-big round taper hole, its lower end diameter equals the 6th section diameter of endoporus, upper end diameter is less than lower end diameter, the endoporus epimere equals the throttling road of rounding taper hole upper end diameter for its diameter, and the external diameter of valve barrel has several pressure transmission holes less than the 5th section internal diameter of urceolus endoporus on the inverted cone hole wall of valve barrel; Columnar guiding valve is contained between fourth, fifth section of valve barrel and the urceolus endoporus, the appearance of guiding valve is divided into two sections, appearance epimere diameter is slightly less than the 4th section internal diameter of urceolus endoporus, appearance hypomere diameter is slightly less than the 5th section internal diameter of urceolus endoporus, the upper end of guiding valve is positioned at the urceolus endoporus and locates for the 4th section, the hypomere of guiding valve is positioned at outer simple endoporus and locates for the 5th section, the endoporus of guiding valve is divided into two sections, the endoporus epimere is the rounding taper hole, the upper end diameter of rounding taper hole equals guiding valve appearance epimere diameter, the lower end of rounding taper hole flushes with the upper end of valve barrel, and its internal diameter is slightly larger than the external diameter of valve barrel; Spring is contained between the upper surface of the 5th section of the upper surface of guiding valve hypomere and urceolus endoporus.
Under the less situation of down-hole pressure, down-hole liquid through the throttling road and the fluid passage flow.When the strong pressure overflow appearred in the down-hole, the pressure differential at valve barrel two ends increased, and this pressure differential acts on the bottom face of guiding valve, promoted to move on the guiding valve, and the upper surface of guiding valve contacts with the lower surface of spool the fluid passage is closed, thereby prevents blowout.
Beneficial effect: the utility model is applied to drillng operation.Beneficial effect is simple in structure, can allow mud pour into drilling tool automatically with the realization pressure balance, and can prevent effectively that blowout from taking place.
Description of drawings
Fig. 1 is the utility model structure chart.Among Fig. 1,1 is urceolus, and 2 is spool, and 3 is guiding valve, and 4 is valve barrel, and 5 is spring, and 6 is pressure transmission hole, and 7 are the throttling road, and 8 is retainer ring, and 9 is pillar, and 10 is the fluid passage.
The specific embodiment
The specific embodiment is as follows: the endoporus of urceolus 1 is divided into six sections, first section is last female rounding taper hole, be connected with a last joint drilling rod with this conical bore, second section internal diameter equals rounding taper hole lower end diameter has interior spiral shell mosquito on it, the 3rd section rounding taper hole that equals second section diameter of endoporus for its upper end diameter, the 4th section circular hole that equals the 3rd section rounding taper hole lower end diameter for diameter, the 5th section circular hole that is its diameter greater than the 4th section diameter, the 6th section circular hole that equals the 5th section diameter for its diameter; Valve barrel 4 is between the 5th section and the 6th section of urceolus 1 endoporus, endoporus is divided into two sections, hypomere is up-small and down-big round taper hole, its lower end diameter equals the 6th section diameter of urceolus 1 endoporus, upper end diameter is less than lower end diameter, the endoporus epimere is the throttling road, and the external diameter of valve barrel 4 has several pressure transmission holes 6 less than the 5th section internal diameter of urceolus 1 endoporus on the inverted cone hole wall of valve barrel 4.Columnar guiding valve 3 is contained between fourth, fifth section of valve barrel 4 and urceolus 1 endoporus, the appearance epimere diameter of guiding valve 3 is slightly less than the 4th section internal diameter of urceolus 1 endoporus, appearance hypomere diameter is slightly less than the 5th section internal diameter of urceolus 1 endoporus, the upper end of guiding valve 3 is positioned at urceolus 1 endoporus and locates for the 4th section, the hypomere of guiding valve 3 is positioned at urceolus 1 endoporus and locates for the 5th section, the endoporus epimere of guiding valve 3 is the rounding taper hole, the upper end diameter of rounding taper hole equals guiding valve 3 appearance epimere diameters, the lower end of rounding taper hole flushes with the upper end of valve barrel 4, and its internal diameter is slightly larger than the external diameter of valve barrel 4; Spring 5 is contained between the upper surface of the 5th section of the lower surface of 3 second sections in guiding valve and urceolus 1 endoporus.
Claims (1)
1. throttling control drilling tool inner blowout preventer is characterized in that comprising urceolus (1), spool (2) and guiding valve (3); Urceolus (1) appearance is divided into two sections, and its hypomere is connected with next section drilling rod with this for externally threaded inverted cone is arranged; The endoporus of urceolus (1) is divided into six sections, from top to bottom, first section is female up big and down small rounding taper hole on it, second section of endoporus has interior spiral shell mosquito for the circular hole that internal diameter equals rounding taper hole lower end diameter on it, the 3rd section rounding taper hole that equals second section diameter of endoporus for its upper end diameter of endoporus, the 4th section circular hole that equals the 3rd section rounding taper hole lower end diameter for diameter of endoporus, the 5th section circular hole that is diameter greater than the 4th section diameter of endoporus of endoporus, the 6th section circular hole that equals the 5th section diameter of endoporus for diameter of endoporus; Valve barrel (4) is positioned between the 5th section and the 6th section of urceolus (1) endoporus, the endoporus of valve barrel (4) is divided into two sections, the endoporus hypomere is up-small and down-big round taper hole, its lower end diameter equals the 6th section diameter of endoporus, upper end diameter is less than lower end diameter, the endoporus epimere equals the throttling road (7) of rounding taper hole upper end diameter for its diameter, and the external diameter of valve barrel (4) has several pressure transmission holes (6) less than the 5th section internal diameter of urceolus (1) endoporus on the inverted cone hole wall of valve barrel (4); Columnar guiding valve (3) is contained in valve barrel (4) and urceolus (1) endoporus the 4th, between five sections, the appearance of guiding valve (3) is divided into two sections, appearance epimere diameter is slightly less than the 4th section internal diameter of urceolus (1) endoporus, appearance hypomere diameter is slightly less than the 5th section internal diameter of urceolus (1) endoporus, the upper end of guiding valve (3) is positioned at urceolus (1) endoporus and locates for the 4th section, the hypomere of guiding valve (3) is positioned at urceolus (1) endoporus and locates for the 5th section, the endoporus of guiding valve (3) is divided into two sections, the endoporus epimere is the rounding taper hole, the upper end diameter of rounding taper hole equals guiding valve (3) appearance epimere diameter, and its lower end of external diameter that the internal diameter of rounding taper hole is slightly larger than valve barrel (4) flushes with the upper end of valve barrel (4); Spring (5) is contained between the upper surface of the 5th section of the upper surface of guiding valve (3) hypomere and urceolus (1) endoporus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420105386 CN2764930Y (en) | 2004-12-02 | 2004-12-02 | Inside gushing proof device of throttling control drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420105386 CN2764930Y (en) | 2004-12-02 | 2004-12-02 | Inside gushing proof device of throttling control drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2764930Y true CN2764930Y (en) | 2006-03-15 |
Family
ID=36167849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420105386 Expired - Fee Related CN2764930Y (en) | 2004-12-02 | 2004-12-02 | Inside gushing proof device of throttling control drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2764930Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718181B (en) * | 2009-12-29 | 2012-08-29 | 西南石油大学 | Lifting valve type underground inside-outside integrated blowout preventer |
| CN109779555A (en) * | 2017-11-13 | 2019-05-21 | 中石化石油工程技术服务有限公司 | A kind of valve type vibration cementing tool |
-
2004
- 2004-12-02 CN CN 200420105386 patent/CN2764930Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718181B (en) * | 2009-12-29 | 2012-08-29 | 西南石油大学 | Lifting valve type underground inside-outside integrated blowout preventer |
| CN109779555A (en) * | 2017-11-13 | 2019-05-21 | 中石化石油工程技术服务有限公司 | A kind of valve type vibration cementing tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Yuan Shuling Document name: Notification of Termination of Patent Right |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |