CN202689986U - High-temperature hydraulic top jar - Google Patents
High-temperature hydraulic top jar Download PDFInfo
- Publication number
- CN202689986U CN202689986U CN 201220229728 CN201220229728U CN202689986U CN 202689986 U CN202689986 U CN 202689986U CN 201220229728 CN201220229728 CN 201220229728 CN 201220229728 U CN201220229728 U CN 201220229728U CN 202689986 U CN202689986 U CN 202689986U
- Authority
- CN
- China
- Prior art keywords
- urceolus
- spline
- mandrel
- threaded connection
- threaded
- 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
A high-temperature hydraulic top jar is used for releasing blockage during pipe column jarring in the fields of well drilling, well repairing and oil testing of oilfield high-pressure deep wells. The high-temperature hydraulic top jar comprises an upper connector, wherein the lower end of the upper connector is in threaded connection with a spline mandrel; the lower end of the spline mandrel is in threaded connection with an oil chamber mandrel; the lower end of the oil chamber mandrel is in threaded connection with a lower mandrel; the spline mandrel is sleeved with a spline nipple; the lower end of the spline nipple is in threaded connection with an outer spline sleeve; the lower end of the outer spline sleeve is in threaded connection with an outer connecting sleeve; an annular cavity is formed between the outer connecting sleeve and the oil chamber mandrel; a sealing packing set is formed between the outer connecting sleeve and the oil chamber mandrel; the lower end of the outer connecting sleeve is in threaded connection with an outer valve sleeve; a delay valve is formed between the outer valve sleeve and the oil chamber mandrel; two oil filling plugs are connected on the outer valve sleeve; a balancing piston is formed between the outer valve sleeve and the lower mandrel; the lower end of the outer valve sleeve is in threaded connection with a lower connector; and a pressure balancing hole which is communicated with the annular cavity is formed on the outer connecting sleeve. The performance of the high-temperature hydraulic top jar is improved; and the salvage depth of the improved high-temperature hydraulic top jar is almost 8,000 m.
Description
Technical field
Tubing string jarring releasing in drilling well, well workover and the formation testing field tests of the utility model application and oil field high pressure and deep well.
Background technology
Along with going deep into of oil exploration, the degree of depth of drilling well, well workover and oil test operation is more and more darker, and formation temperature is more and more higher, brings very large impact for the performance of domestic hydraulic pressure top jar.2007, in China Petrochemical Industry Xinjiang district forever in the 3 well well workover fishing processes, two domestic hydraulic pressure top jars are 4003.71m place engagement with the fish successively, and operation can not produce effective jarring for several times repeatedly, brings difficulty to carrying out of salvage.By analyzing: too high annular space liquid column hydrostatic pressure, cause on the bumper jar packing group to damage because pressure reduction is excessive; Too high formation temperature has been accelerated again the seepage velocity of hydraulic oil in the grease chamber, makes effectively accumulation of energy jarring of bumper jar, brings potential safety hazard to job execution.
Summary of the invention
The purpose of this utility model is in order to overcome the deficiencies in the prior art, to provide a kind of high-temperature liquid to press top jar, its performance is improved, nearly 8 kms of the bumper jar salvaging degree of depth after the improvement.
The purpose of this utility model is achieved in that high-temperature liquid presses top jar, comprises top connection, the lower end of the top connection splined mandrel that is threaded, the lower end of the splined mandrel grease chamber's axle that is threaded, the lower end of the grease chamber's axle lower spindle that is threaded; Described splined mandrel is nested with the spline short circuit outward, the lower end of the spline short circuit spline urceolus that is threaded, the lower end of spline urceolus is threaded and one connects urceolus, connect between urceolus and the grease chamber's axle toroidal cavity is set, connect between urceolus and the grease chamber's axle sealed packing group is set, the lower end screw thread connection valve urceolus that connects urceolus, between valve urceolus and the grease chamber's axle time-delay valve is set, connect two oil filler plugs on the valve urceolus, between valve urceolus and the lower spindle dummy piston is set, the lower contact that is threaded of the lower end of valve urceolus; The pressure compensation opening that communicates with toroidal cavity is set on the described connection urceolus.
Principle of the present utility model: in case tubing string is blocked in work progress, on carry the load act in the top connection, under the control in grease chamber's valve and the accurate gap of valve urceolus, the inner hydraulic oil of upper chamber (time-delay valve top cavity) is to the slow seepage flow of lower oil chamber's (cavity of time-delay valve below), carrying load on this moment stores with regard to the elastic potential energy that is converted into tubing string, after valve moves to large grease chamber, the pressure sudden outburst of hydraulic oil, the rapid up generation jarring of tubing string.
The utility model is connecting tonnage balance pipe on the urceolus, eliminates liquid column hydrostatic pressure to the impact of packing group on the bumper jar; And by improving the grinding precision of time-delay valve and valve seat, add the methods such as special high-temperature hydraulic oil and fluorine rubber seal element in the grease chamber, eliminated the impact of high temperature on the bumper jar performance.The utility model is improved the performance of hydraulic shock device top jar by above design, and the bumper jar after the improvement is salvaged nearly 8 kms of the degree of depth, and performance is reached advanced world standards.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model.
Among the figure, 1 top connection, 2 splined mandrels, 3 sealed packing groups, 4 spline short circuits, 5 spline urceolus, 6 connect urceolus, 7 grease chamber's axles, 8 valve urceolus, 9 time-delay valves, 10 oil filler plugs, 11 dummy pistons, 12 lower spindles, 13 lower contacts, 14 toroidal cavities, 15 pressure compensation openings.
The specific embodiment
As shown in Figure 1, press top jar for high-temperature liquid, comprise top connection 1, the lower end of top connection 1 splined mandrel 2 that is threaded, the lower end of the splined mandrel 2 grease chamber's axle 7 that is threaded, the lower end of grease chamber's axle 7 lower spindle 12 that is threaded.The splined mandrel 2 outer spline short circuits 4 that are nested with, the lower end of the spline short circuit 4 spline urceolus 5 that is threaded, the lower end of spline urceolus 5 is threaded and one connects urceolus 6, connect between urceolus 6 and the grease chamber's axle 7 toroidal cavity 14 is set, connect the pressure compensation opening 15 that communicates with toroidal cavity 14 is set on the urceolus 6, connect between urceolus 6 and the grease chamber's axle 7 sealed packing group 3 is set, the lower end screw thread connection valve urceolus 8 that connects urceolus 6, between valve urceolus 8 and the grease chamber's axle 7 time-delay valve 9 is set, connect two oil filler plugs 10 on the valve urceolus 8, between valve urceolus 8 and the lower spindle 12 dummy piston 11 is set, the lower contact 13 that is threaded of the lower end of valve urceolus 8.
Claims (1)
1. high-temperature liquid is pressed top jar, comprises top connection, the lower end of the top connection splined mandrel that is threaded, the lower end of the splined mandrel grease chamber's axle that is threaded, the lower end of the grease chamber's axle lower spindle that is threaded; Described splined mandrel is nested with the spline short circuit outward, the lower end of the spline short circuit spline urceolus that is threaded, the lower end of spline urceolus is threaded and one connects urceolus, connect between urceolus and the grease chamber's axle toroidal cavity is set, connect between urceolus and the grease chamber's axle sealed packing group is set, the lower end screw thread connection valve urceolus that connects urceolus, between valve urceolus and the grease chamber's axle time-delay valve is set, connect two oil filler plugs on the valve urceolus, between valve urceolus and the lower spindle dummy piston is set, the lower contact that is threaded of the lower end of valve urceolus; It is characterized in that: the pressure compensation opening that communicates with toroidal cavity is set on the described connection urceolus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220229728 CN202689986U (en) | 2012-05-22 | 2012-05-22 | High-temperature hydraulic top jar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220229728 CN202689986U (en) | 2012-05-22 | 2012-05-22 | High-temperature hydraulic top jar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202689986U true CN202689986U (en) | 2013-01-23 |
Family
ID=47545616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220229728 Expired - Fee Related CN202689986U (en) | 2012-05-22 | 2012-05-22 | High-temperature hydraulic top jar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202689986U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109184610A (en) * | 2018-11-09 | 2019-01-11 | 贵州高峰石油机械股份有限公司 | A kind of pressure equaliser of super myriametre deep-well bumper jar |
-
2012
- 2012-05-22 CN CN 201220229728 patent/CN202689986U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109184610A (en) * | 2018-11-09 | 2019-01-11 | 贵州高峰石油机械股份有限公司 | A kind of pressure equaliser of super myriametre deep-well bumper jar |
| CN109184610B (en) * | 2018-11-09 | 2023-08-29 | 贵州高峰石油机械股份有限公司 | Pressure balancing device of ultra-ten thousand-meter deep well jar |
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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: 20130123 Termination date: 20150522 |
|
| EXPY | Termination of patent right or utility model |