CN2740771Y - Self-pulping arrow back pressure valve - Google Patents
Self-pulping arrow back pressure valve Download PDFInfo
- Publication number
- CN2740771Y CN2740771Y CN 200420105341 CN200420105341U CN2740771Y CN 2740771 Y CN2740771 Y CN 2740771Y CN 200420105341 CN200420105341 CN 200420105341 CN 200420105341 U CN200420105341 U CN 200420105341U CN 2740771 Y CN2740771 Y CN 2740771Y
- Authority
- CN
- China
- Prior art keywords
- endoporus
- section
- diameter
- internal diameter
- urceolus
- 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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- Earth Drilling (AREA)
Abstract
The utility model relates to a self-pulping arrow back pressure valve, which belongs to the technical field of a well drill drilling tool. The technical problem to solve is to provide the self-pulping arrow back pressure valve which can let mud pulping inject in the drilling tool automatically when the drilling tool is dropped down to the downhole to realize the pressure balance. The technical proposal of solving the technical problem comprises an outer cylinder, an arrow valve core, a valve base, a supporting cylinder, a sliding sleeve cylinder and a stopper screw cap. The valve base is installed on the upper section of the inner hole of the outer cylinder, and the valve base is provided with the inner hole. The arrow valve core is positioned at the intermediate section of the outer cylinder, the supporting cylinder is arranged in the intermediate section and the lower section of the outer cylinder, and the sliding sleeve cylinder is arranged in the supporting cylinder. The utility model is applied to the well drill, the beneficial effect is that the drilling time is shortened, the drilling cost is cut down, and the well blowout is prevented.
Description
Technical field
The utility model belongs to the well drilling tool technical field.Be particularly related to the valve gear of a kind of well or well.
Background technology
Prior art flechette-type back-pressure valve is contained in the stage casing of drilling assembly, and when drilling tool during down to the down-hole, the mud of down-hole can not enter in the above drilling tool of back-pressure valve, and the mud pressure outside the drilling tool is greater than the pressure in the drilling tool.To reach balance in order making in the drilling tool with drilling tool pressure outward, must to inject mud in the drilling tool more than back-pressure valve.Operation is more, has increased cost of production.
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 the pressure balanced formula flechette-type back-pressure valve that is in the milk certainly when drilling tool is to the down-hole down.
The technical scheme that solves its technical problem is as follows: the formula of being in the milk certainly flechette-type back-pressure valve comprises urceolus, flechette-type spool, valve seat, carrying cylinder, sliding sleeve and block nut.The appearance of urceolus is divided into two sections, and epimere is a cylinder, and hypomere is connected with next joint drilling rod with this cone for externally threaded inverted cone is arranged.The endoporus of urceolus is divided into six sections, from top to bottom, endoporus is female up big and down small turbination hole for first section, be connected with a last joint drilling rod with this conical bore, the internal diameter that endoporus is second section equals the diameter of first section turbination endoporus lower end, the 3rd section internal diameter of endoporus is slightly less than second section internal diameter of endoporus, endoporus second, form a step between three sections, the 4th section internal diameter of endoporus is greater than the 3rd section internal diameter of endoporus, the 5th section internal diameter of endoporus is less than the 4th section internal diameter of endoporus, endoporus the 4th, form a step between five sections, the internal diameter that endoporus is the 6th section is greater than the 5th section internal diameter of endoporus; On second section of the endoporus of urceolus internal thread is arranged, in have the centre bore appearance to have externally threaded valve seat to be contained on second section of the endoporus, diameter of bore equals the packing ring of valve seat diameter of bore and sealing ring and is contained on the step between second and third section and with valve seat and compresses; The flechette-type spool is divided into three sections, the epimere diameter is less than the valve seat diameter of bore, the hypomere diameter equals the epimere diameter, and the stage casing is that last diameter equals the epimere diameter, diameter is greater than the cone of valve seat diameter of bore down, and the flechette-type spool is arranged in one, two, three, four section urceolus of locating of urceolus endoporus; Carrying cylinder comprises cover and cylindrical shell, cover combines with cylindrical shell, the cylindrical shell appearance is divided into two sections, the epimere slightly larger in diameter is in the 5th section diameter of urceolus endoporus, the hypomere diameter is slightly less than the 5th section diameter of urceolus endoporus, there is go back to the mud hole lower end of epimere, the cover external diameter equals cylindrical shell epimere external diameter, cover has centre bore, the centre bore internal diameter is slightly larger than flechette-type spool hypomere external diameter and is slightly less than first section internal diameter of cylindrical shell endoporus, the cylindrical shell endoporus is divided into three sections, first section internal diameter of endoporus is slightly less than the cylindrical shell external diameter and is slightly larger than cover centre bore internal diameter, there is several go back tos mud hole the lower end that endoporus is first section, second section internal diameter of endoporus is less than first section internal diameter, the 3rd section internal diameter of endoporus has internal thread greater than second section internal diameter on it less than first section internal diameter, and carrying cylinder is positioned at the 4th of urceolus endoporus, between the hypomere of five sections and flechette-type spool, the bottom face that cylindrical shell is first section is contained in urceolus endoporus the 4th, on the step between five sections; The diameter of bore of block nut equals the diameter of second section of carrying cylinder endoporus, the diameter that appearance is second section equal the 6th section of urceolus endoporus diameter its highly equal the height of the 6th section of urceolus endoporus, the diameter that the block nut appearance is first section equals the diameter of the 3rd section of carrying cylinder endoporus, external screw thread is arranged on it, it highly equals the height of the 3rd section of carrying cylinder endoporus, and block nut is contained in the 3rd section of carrying cylinder and goes up carrying cylinder is fixed; Sliding sleeve comprises loam cake and sleeve, loam cake combines with sleeve, the external diameter of sleeve is slightly less than first section internal diameter of carrying cylinder endoporus and is slightly larger than the cover center-hole diameter of carrying cylinder, there is logical mud hole in the sleeve stage casing, the internal diameter of loam cake is slightly larger than the external diameter of the 3rd section of flechette-type spool, on covered a circle slurry channel hole, sliding sleeve is between first section of carrying cylinder endoporus and flechette-type spool hypomere, can in first section of carrying cylinder endoporus, slide, upper and lower two positions are arranged; On have cutting off of convex edge to be contained in to be positioned on the flechette-type spool at the place, sliding sleeve loam cake lower surface when upper.
When normally creeping into operation, under the well-flushing action of hydraulic force, sliding sleeve and flechette-type spool glide together, until the lower surface of sliding sleeve with till step between second and third section of carrying cylinder endoporus contacts.Logical mud hole on the sliding sleeve is relative with time mud hole on the carrying cylinder at this moment, and it is moving that the well liquid of down-hole can reach back the mud orifice flow by logical mud hole.When carrying out tripping operation, the buoyancy of down-hole slurry promotes to move on flechette-type valve and the sliding sleeve, closes logical mud hole and reaches go back to the mud hole, and down-hole slurry is promptly moving by the slurry channel orifice flow of sliding sleeve.When overflow appearred in the down-hole, powerful oil pressure relief acted on the flechette-type spool lower surface, and the flechette-type spool is promptly cut off to cut off and moved the shut off valve gate seat, prevents to produce blowout.
Beneficial effect: the utility model is used for drilling well.Beneficial effect be under when boring, form well liquid passage at valve internal, can economize the operation of mud grouting in the whereabouts drilling tool hydrophthalmia and bore the circulation emptying gas operation that finishes down.Can shorten drilling time, save drilling cost, can prevent to take place when overflow from appearring in the down-hole blowout.
Description of drawings
Fig. 1 is the structure chart of this newspaper utility model.Among Fig. 1,1 is urceolus, and 2 is the flechette-type spool, and 3 is valve seat, 4 is carrying cylinder, and 5 is sliding sleeve, and 6 is block nut, 7 is packing ring, and 8 is sealing ring, and 9 is cover, 10 is cylindrical shell, and 11 are go back to the mud hole, and 12 is centre bore, 13 is loam cake, and 14 is sleeve, and 15 are logical mud hole, 16 is the slurry channel hole, and 17 is the convex edge, and 18 for cutting off.
The specific embodiment
The specific embodiment is as follows: the epimere of urceolus 1 is a cylinder, and hypomere is connected with next joint drilling rod for externally threaded inverted cone is arranged.The endoporus of urceolus 1 is divided into six sections, first section is female round taper hole, be connected with a last joint drilling rod, second section internal diameter equals the diameter of first section turbination endoporus lower end, the 3rd section internal diameter is slightly less than second section internal diameter of endoporus, the 4th section internal diameter is greater than the 3rd section internal diameter of endoporus, and the 5th section internal diameter is less than the 4th section internal diameter of endoporus, and the 6th section internal diameter is greater than the 5th section internal diameter of endoporus; Urceolus 1 endoporus has internal thread for second section, and valve seat 3 dresses thereon; Flechette-type spool 2 epimere diameters are less than valve seat 3 diameter of bores, and the hypomere diameter equals the epimere diameter, and the stage casing is that last diameter equals the epimere diameter, diameter is greater than the cone of valve seat 3 diameter of bores down, and flechette-type spool 2 is arranged in urceolus 1 endoporus; Carrying cylinder 4 comprises cover 9 and cylindrical shell 10, cylindrical shell 9 appearance epimere slightly larger in diameter are in the 5th section diameter of urceolus 1 endoporus, the hypomere diameter is slightly less than the 5th section diameter of urceolus 1 endoporus, there is go back to mud hole 11 lower end of epimere, cover 9 has centre bore 12, centre bore 12 internal diameters are slightly larger than flechette-type spool 2 hypomere external diameters and are slightly less than first section internal diameter of cylindrical shell 10 endoporus, first section internal diameter of cylindrical shell 10 endoporus is slightly less than cylindrical shell 10 external diameters and is slightly larger than cover 9 centre bores 12 internal diameters, there is several go back tos mud hole 11 lower end, second section internal diameter of endoporus be less than first section internal diameter, and the 3rd section internal diameter of endoporus has internal thread greater than second section internal diameter on it less than first section internal diameter; Block nut 6 is contained in the 3rd section of carrying cylinder 4 and goes up carrying cylinder 4 fixing; Sliding sleeve 5 comprises loam cake 13 and sleeve 14, the external diameter of sleeve 14 is slightly less than first section internal diameter of carrying cylinder 4 endoporus and is slightly larger than cover 9 diameter of bores of carrying cylinder 4, there is logical mud hole 15 in sleeve 14 stage casings, the internal diameter of loam cake 13 is slightly larger than the external diameter of the 3rd section of flechette-type spool 2, one circle slurry channel hole 16 is arranged on the loam cake 13, sliding sleeve 5 can slide in first section of carrying cylinder 4 endoporus between first section of carrying cylinder 4 endoporus and flechette-type spool 2 hypomeres, and upper and lower two positions are arranged; On have cutting off of convex edge 17 18 to be contained on the flechette-type spool 2 at the place, sliding sleeve 5 loam cakes 13 lower surfaces that is positioned at when upper.
Claims (1)
1. the formula flechette-type back-pressure valve that is in the milk certainly is characterized in that comprising urceolus (1), flechette-type spool (2), valve seat (3), carrying cylinder (4), sliding sleeve (5) and block nut (6); The appearance of urceolus (1) is divided into two sections, and epimere is a cylinder, and hypomere is connected with next joint drilling rod with this cone for externally threaded inverted cone is arranged; The endoporus of urceolus (1) is divided into six sections, from top to bottom, endoporus is female up big and down small turbination hole for first section, be connected with a last joint drilling rod with this conical bore, the internal diameter that endoporus is second section equals the diameter of first section turbination endoporus lower end, the 3rd section internal diameter of endoporus is slightly less than second section internal diameter of endoporus, endoporus second, form a step between three sections, the 4th section internal diameter of endoporus is greater than the 3rd section internal diameter of endoporus, the 5th section internal diameter of endoporus is less than the 4th section internal diameter of endoporus, endoporus the 4th, form a step between five sections, the internal diameter that endoporus is the 6th section is greater than the 5th section internal diameter of endoporus; On second section of the endoporus of urceolus (1) internal thread is arranged, in have the centre bore appearance to have externally threaded valve seat (3) to be contained on second section of the endoporus, diameter of bore equals the packing ring (7) of valve seat (3) diameter of bore and sealing ring (8) and is contained on the step between second and third section and with valve seat (3) and compresses; Flechette-type spool (2) is divided into three sections, the epimere diameter is less than valve seat (3) diameter of bore, the hypomere diameter equals the epimere diameter, the stage casing is that last diameter equals the epimere diameter, diameter is greater than the cone of valve seat (3) diameter of bore down, and flechette-type spool (2) is arranged in one, two, three, four section urceolus of locating (1) of urceolus (1) endoporus; Carrying cylinder (4) comprises cover (9) and cylindrical shell (10), cover (9) combines with cylindrical shell (10), cylindrical shell (10) appearance is divided into two sections, the epimere slightly larger in diameter is in the 5th section diameter of urceolus (1) endoporus, the 5th section diameter of the smaller urceolus of hypomere diameter (1) endoporus, cover (9) external diameter equals cylindrical shell (10) epimere external diameter, cover (9) has centre bore (12), centre bore (12) internal diameter is slightly larger than flechette-type spool (2) hypomere external diameter and is slightly less than first section internal diameter of cylindrical shell (10) endoporus, cylindrical shell (10) endoporus is divided into three sections, first section internal diameter of endoporus is slightly less than cylindrical shell (10) external diameter and is slightly larger than cover (9) centre bore (12) internal diameter, there is several go back tos mud hole (11) lower end that endoporus is first section, second section internal diameter of endoporus is less than first section internal diameter, the 3rd section internal diameter of endoporus has internal thread greater than second section internal diameter on it less than first section internal diameter, carrying cylinder (4) is positioned at the 4th of urceolus (1) endoporus, between the hypomere of five sections and flechette-type spool (2), the bottom face that cylindrical shell is (10) first sections is contained in urceolus (1) endoporus the 4th, on the step between five sections; The diameter of bore of block nut (6) equals the diameter of second section of carrying cylinder (4) endoporus, the diameter that appearance is second section equal the 6th section of urceolus (1) endoporus diameter its highly equal the height of the 6th section of urceolus (1) endoporus, the diameter that block nut (6) appearance is first section equals the diameter of the 3rd section of carrying cylinder (4) endoporus, external screw thread is arranged on it, it highly equals the height of the 3rd section of carrying cylinder (4) endoporus, and block nut (6) is contained in the 3rd section of carrying cylinder (4) and goes up carrying cylinder (4) fixing; Sliding sleeve (5) comprises loam cake (13) and sleeve (14), loam cake (13) combines with sleeve (14), the external diameter of sleeve (14) is slightly less than first section internal diameter of carrying cylinder (4) endoporus and is slightly larger than cover (9) centre bore (12) internal diameter of carrying cylinder (4), there is logical mud hole (15) in sleeve (14) stage casing, the internal diameter of loam cake (13) is slightly larger than the external diameter of the 3rd section of flechette-type spool (2), one circle slurry channel hole (15) is arranged on the loam cake (13), sliding sleeve (5) is positioned between first section of carrying cylinder (4) endoporus and flechette-type spool (2) hypomere, can in first section of carrying cylinder (4) endoporus, slide, on having, following two positions; On have the cutting off of convex edge (17) (18) to be contained in to be positioned on the flechette-type spool (2) at the place, sliding sleeve (5) loam cake (13) lower surface when upper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420105341 CN2740771Y (en) | 2004-11-27 | 2004-11-27 | Self-pulping arrow back pressure valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420105341 CN2740771Y (en) | 2004-11-27 | 2004-11-27 | Self-pulping arrow back pressure valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2740771Y true CN2740771Y (en) | 2005-11-16 |
Family
ID=35351062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420105341 Expired - Fee Related CN2740771Y (en) | 2004-11-27 | 2004-11-27 | Self-pulping arrow back pressure valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2740771Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401514A (en) * | 2016-12-15 | 2017-02-15 | 成都市卓新实业有限公司 | Backpressure valve capable of achieving automatic slurry injecting |
| CN106401528A (en) * | 2016-12-15 | 2017-02-15 | 成都市卓新实业有限公司 | Grouting method for drilling rod |
| CN106988704A (en) * | 2016-01-21 | 2017-07-28 | 中国石油化工股份有限公司 | A kind of down-hole string pressure-bearing blanking plug |
| CN106996279A (en) * | 2017-06-02 | 2017-08-01 | 成都市卓新实业有限公司 | A kind of self-priming paddle back pressure valve |
| CN107060689A (en) * | 2017-06-02 | 2017-08-18 | 成都市卓新实业有限公司 | A kind of drilling rod is from grouting method |
| CN107503711A (en) * | 2017-08-23 | 2017-12-22 | 东营市友佳石油科技有限公司 | A kind of cased hole completion arrow type back-pressure valve and method |
-
2004
- 2004-11-27 CN CN 200420105341 patent/CN2740771Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106988704A (en) * | 2016-01-21 | 2017-07-28 | 中国石油化工股份有限公司 | A kind of down-hole string pressure-bearing blanking plug |
| CN106988704B (en) * | 2016-01-21 | 2020-07-10 | 中国石油化工股份有限公司 | Pressure-bearing blanking plug for underground pipe column |
| CN106401514A (en) * | 2016-12-15 | 2017-02-15 | 成都市卓新实业有限公司 | Backpressure valve capable of achieving automatic slurry injecting |
| CN106401528A (en) * | 2016-12-15 | 2017-02-15 | 成都市卓新实业有限公司 | Grouting method for drilling rod |
| CN106401514B (en) * | 2016-12-15 | 2019-05-21 | 成都市卓新实业有限公司 | A kind of grouting back pressure valve certainly |
| CN106401528B (en) * | 2016-12-15 | 2019-05-21 | 成都市卓新实业有限公司 | A kind of drilling rod grouting method |
| CN106996279A (en) * | 2017-06-02 | 2017-08-01 | 成都市卓新实业有限公司 | A kind of self-priming paddle back pressure valve |
| CN107060689A (en) * | 2017-06-02 | 2017-08-18 | 成都市卓新实业有限公司 | A kind of drilling rod is from grouting method |
| CN107503711A (en) * | 2017-08-23 | 2017-12-22 | 东营市友佳石油科技有限公司 | A kind of cased hole completion arrow type back-pressure valve and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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 |