CN205172495U - Automatic bowling of liquid accuse in pit connects - Google Patents
Automatic bowling of liquid accuse in pit connects Download PDFInfo
- Publication number
- CN205172495U CN205172495U CN201520848141.9U CN201520848141U CN205172495U CN 205172495 U CN205172495 U CN 205172495U CN 201520848141 U CN201520848141 U CN 201520848141U CN 205172495 U CN205172495 U CN 205172495U
- Authority
- CN
- China
- Prior art keywords
- piston
- steel ball
- spring
- nozzle
- plunger shaft
- 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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Abstract
The utility model relates to an automatic bowling of liquid accuse in pit connects mainly comprises body, piston assembly, bowling assembly and shearing pin nail. The knot type is API drilling rod standard and buckles about bat connecting, and installation piston assembly in connecting leans on Y type sealing washer sealed between piston and the body inner chamber, and the piston leans on the hole to limit it with the jump ring and goes up the row distance, the piston assembly be the shearing pin nail through threaded connection with connect together fixed, shearing pin follow closely and the body between seal up by O type sealing washer, place the steel ball in the inclined hole on the body to it is sealed with the steel ball plug, lean on O type sealing washer sealed between steel ball plug and the body. The utility model discloses simple structure, safety, reliable, convenient operation can come automatic the realization through the control discharge capacity and bat under the circumstances of not dismantling the drilling string, provide reliable guarantee for carrying out the well drilling coring operation safely.
Description
Technical field
The utility model relates to a kind of drilling and coring delivery underground hydraulic-control automatic ball-throwing joint for petroleum drilling and mining field of tool.
Background technology
In the process of coring, to clean coring inner drum before coring, want pitching to block coring inner drum after cleaning and make drilling fluid change the flow direction, flow through and core inner/outer tube annular space and do not flow through coring inner drum, make the rock core of formation washing away not by drilling fluid.Current pitching method is: after huge discharge circulation cleaning washes coring inner drum, shaft bottom, dismantles drill string from well head to pitching in drill string, after pitching, then connects the release of drill string turn on pump, when ball arrives the ball seat on coring tool, just can carry out coring operation.The method needs to dismantle drill string, and operating process is complicated, and drilling tool can't connect back-pressure valve, there is higher construction risk.
Summary of the invention
The purpose of this utility model is for prior art Problems existing, provides a kind of when not dismantling drill string, automatically realizes the underground hydraulic-control automatic ball-throwing joint of pitching by controlling discharge capacity.
The technical solution of the utility model is:
A kind of underground hydraulic-control automatic ball-throwing joint, a plunger shaft is provided with at hollow body 1 inner chamber, the T-shaped piston 5 of hollow is combined with in plunger shaft, the piston head on piston 5 top and body 1 slide axially and are sealed and matched, the diameter shrinkage part of piston 5 bottom and body 1 are connected by radially-arranged shear pin 6, piston spring 14 is provided with at the underside of the piston head of piston 5 and the annular section of plunger shaft, the nozzle 15 of hollow is sealedly connected with in the piston head of piston 5, 45 degree are become to be provided with an inclined hole at body 1 axis direction, steel ball 9 and steel ball and spring 10 is set gradually from inside to outside in inclined hole, steel ball plug 12, piston 5 lower end of steel ball 9 when original state and in body 1 keeps tangent.
Such scheme comprises further:
Be provided with y-type seal ring 16 between the piston head of piston 5 and body 1, nozzle 15 to consist of with piston nozzle jump ring 3 and nozzle O RunddichtringO 4 and is tightly connected.
Piston 5 in body 1 is axially limited in piston spring 14 free travel by the hole jump ring 2 in plunger shaft.
Establish steel ball plug O RunddichtringO 13 between steel ball plug 12 and body 1, steel ball and spring 10 is connected with steel ball plug 12 by steel ball and spring dog screw 11; Shear pin 6 keeps sealing by elastic washer 7 and body 1.
Utility model works principle is: be connected on coring tool by underground hydraulic-control automatic ball-throwing joint, under get into turn on pump behind shaft bottom, wash cycles inner core is carried out with lower than the discharge capacity of cutting off pin, discharge capacity is increased after cleaning, namely the pressure drop that nozzle produces is increased, after pressure drop reaches the shear strength of shear pin, it is descending that piston cuts off pin, then termination of pumping, Pressure Drop disappears, piston resets under the counter-force effect of spring, steel ball will be ejected body and enter body intermediate flow channel thereupon, descending the falling of steel ball is cored on the ball seat of return connector, blocking coring inner drum, just coring operation can be carried out.
The utility model has the advantages that: structure is simple, safe, reliable, easy to operate, when not dismantling drill string, automatically can realizing pitching by controlling discharge capacity, providing reliable guarantee for carrying out drilling and coring delivery operation safely.
Accompanying drawing explanation
Fig. 1 and Fig. 2 is a kind of different angles sectional structure schematic diagram of underground hydraulic-control automatic ball-throwing joint respectively.
In figure: 1. body, 2. hole jump ring, 3. nozzle jump ring, 4. nozzle O RunddichtringO, 5. piston, 6. shear pin, 7. elastic washer, 8. shear pin O RunddichtringO, 9. steel ball, 10. steel ball and spring, 11. steel ball and spring dog screws, 12. steel ball plugs, 13. steel ball plug O RunddichtringOs, 14. piston springs, 15. nozzles, 16.Y RunddichtringO.
Detailed description of the invention
The present invention will be further described for Fig. 1, Fig. 2 in illustrating below in conjunction with accompanying drawing.
In FIG, the utility model has a length to be about the joint body 1 of 600mm, its upper and lower shape of the mouth as one speaks is API drilling rod standard button, one plunger shaft is arranged at joint top, in plunger shaft, piston 5 is installed, piston 5 is provided with nozzle 15, hole, nozzle top jump ring 3 is fixed, seal by nozzle O RunddichtringO 4 between nozzle and piston, seal by y-type seal ring 16 between piston 5 and body 1, piston there is piston spring 14, the power certain to piston spring 14 pre-pressing, and then with two shear pins 6, piston 5 is fixed on body 1, shear pin 6 is connected with body 1 by screw thread, seal by shear pin O RunddichtringO 8 between shear pin 6 and body 1.
With reference to Fig. 2, on body 1 with shear pin aperture to becoming 90 degree, axis becomes 45 degree to have an inclined hole, a steel ball 9 is placed in inclined hole, then with steel ball plug 12, steel ball 9 is sealed in inclined hole, steel ball plug 12 is provided with steel ball and spring 10, there is an elastic force when pitching to steel ball, steel ball can be made to launch smoothly, seal by steel ball plug O RunddichtringO 13 between steel ball plug 12 and body 1.
In drilling process, drilling fluid flows through nozzle 15, produces pressure drop, after pressure drop reaches the shear strength of shear pin 6, it is descending that piston 5 cuts off pin 6, then termination of pumping, pressure reduces or disappears, and piston 5 resets under the counter-force effect of piston spring 14, steel ball 9 will be ejected body and enter body intermediate flow channel thereupon, descending the falling of steel ball 9 is cored on the ball seat of return connector, and blocking coring inner drum, just can carry out coring operation.
Claims (4)
1. a underground hydraulic-control automatic ball-throwing joint, it is characterized in that: be provided with a plunger shaft at hollow body (1) inner chamber, the T-shaped piston (5) of hollow is combined with in plunger shaft, the piston head on piston (5) top and body (1) slide axially and are sealed and matched, diameter shrinkage part and the body (1) of piston (5) bottom are connected by radially-arranged shear pin (6), piston spring (14) is provided with at the underside of the piston head of piston (5) and the annular section of plunger shaft, the nozzle (15) of hollow is sealedly connected with in the piston head of piston (5), 45 degree are become to be provided with an inclined hole at body (1) axis direction, steel ball (9) and steel ball and spring (10) is set gradually from inside to outside in inclined hole, steel ball plug (12), piston (5) lower end of steel ball (9) when original state and in body (1) keeps tangent.
2. underground hydraulic-control automatic ball-throwing joint according to claim 1, it is characterized in that: be provided with y-type seal ring (16) between the piston head of piston (5) and body (1), nozzle (15) consists of nozzle jump ring (3) and nozzle O RunddichtringO (4) and piston and is tightly connected.
3. underground hydraulic-control automatic ball-throwing joint according to claim 1 and 2, is characterized in that: the piston (5) in body (1) is axially limited in piston spring (14) free travel by the hole jump ring (2) in plunger shaft.
4. underground hydraulic-control automatic ball-throwing joint according to claim 1 and 2, it is characterized in that: establish steel ball plug O RunddichtringO (13) between steel ball plug (12) and body (1), steel ball and spring (10) is connected with steel ball plug (12) by steel ball and spring dog screw (11); Shear pin (6) keeps sealing by elastic washer (7) and body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520848141.9U CN205172495U (en) | 2015-10-30 | 2015-10-30 | Automatic bowling of liquid accuse in pit connects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520848141.9U CN205172495U (en) | 2015-10-30 | 2015-10-30 | Automatic bowling of liquid accuse in pit connects |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205172495U true CN205172495U (en) | 2016-04-20 |
Family
ID=55736498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520848141.9U Expired - Fee Related CN205172495U (en) | 2015-10-30 | 2015-10-30 | Automatic bowling of liquid accuse in pit connects |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205172495U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112324373A (en) * | 2020-10-26 | 2021-02-05 | 中国海洋石油集团有限公司 | Ball throwing device for well drilling and operation method thereof |
-
2015
- 2015-10-30 CN CN201520848141.9U patent/CN205172495U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112324373A (en) * | 2020-10-26 | 2021-02-05 | 中国海洋石油集团有限公司 | Ball throwing device for well drilling and operation method thereof |
| CN112324373B (en) * | 2020-10-26 | 2022-07-01 | 中国海洋石油集团有限公司 | Ball throwing device for well drilling and operation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160420 Termination date: 20211030 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |