CN2806752Y - Hydraulic drilling jar with mechanical interlock mechanism - Google Patents
Hydraulic drilling jar with mechanical interlock mechanism Download PDFInfo
- Publication number
- CN2806752Y CN2806752Y CN 200520112147 CN200520112147U CN2806752Y CN 2806752 Y CN2806752 Y CN 2806752Y CN 200520112147 CN200520112147 CN 200520112147 CN 200520112147 U CN200520112147 U CN 200520112147U CN 2806752 Y CN2806752 Y CN 2806752Y
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Abstract
The utility model relates to a hydraulic rotary jar with a mechanical locking mechanism, which is used for the jam release of the downhole jolting of the well drilling of petroleum and gas. The utility model comprises a slip 17, a slip cover 18, a flexible mechanism assembly 20, etc., wherein a slip mandrel 10 is connected with a splined mandrel 1; an upward-jolting regulating nut 14, the flexible mechanism assembly 20, the slip 17, the slip cover 18 and a downward-jolting regulating nut 23 are respectively arranged between the slip mandrel 10 and a middle barrel body 21; the slip mandrel 10, an extended mandrel 25 and a mandrel of a valve body 26 are orderly connected. The utility model has the characteristics of prevention of mistaken jolting, free connecting position in a drilling column, etc.; the utility model is suitable for complex wells, such as an under-balanced drilling well, a directional well, etc., and is additionally provided with the mechanical locking mechanism, of which the upward-jolting unlocking force is arranged to be larger than the pulling force of the drilling column in general well-drilling work; a hydraulic damping mechanism of the utility model does not work all the time during drilling, trip, the connection of a single root, and the touch of a well bottom and thus the utility model fundamentally avoids the problem of the mistaken jolting of hydraulic jars in using.
Description
Technical field
The utility model belongs to petroleum and natural gas drilling well downhole tool, be a kind of fluid pressure type drilling jar that is connected the band mechanical interlocking mechanism of the down-hole jarring releasing in the drill string assembly, be applicable to the various drillng operations of complex working condition wells such as comprising underbalance air drilling, directional well.
Background technology
In drillng operation, owing to reason such as geological structure complexity, technical measures be improper, the accident of bit freezing usually takes place.Bit freezing is very big to drilling well work influence, endangers also very dark.Drilling jar is to remove bit freezing and prevent one of effective tool of more major break down, when drilling tool is met card, imposes up or down jarring consumingly by drilling jar to the stuck point place, makes stuck point loosening, thereby reaches the purpose of rapid unfreezing.
The core of drilling jar product is retaining mechanism (or claiming relieving mechanism).Press the difference of retaining mechanism operating principle, can be divided into fluid pressure type drilling jar, mechanical type drilling jar and hydraulic machinery combined type drilling jar.
Fluid pressure type drilling jar relieving mechanism is such: when the tension of drill string during in bumper jar, axle drives piston and moves, because liquid is incompressible, piston is moved to be obstructed, liquid in the fluid cylinder goes out by the current limliting concentrated flow of piston under pressure, in this process, piston slowly moves under the effect of pulling force.When pulling force is enough big, perhaps piston moves to the off-position during long enough time of keeping of pulling force, and this moment, the high pressure chest of fluid cylinder was communicated with suddenly with low pressure chamber, and the resistance that piston moves sharply reduces suddenly, and axle is released, jolting mechanism generation jarring.From above operating principle as can be seen, the jarring tonnage of fluid pressure type drilling jar can be controlled by the driller and lift the power free adjustment, uses flexible operation.But there is following deficiency in it: (1) even because it is subjected to very little pulling force also can produce jarring, so mistake shake takes place often creeping into, make a trip, make up a joint or touch the shaft bottom.(2) because seal and sealing surface are easy to wear, can not make its pressurized during with brill, so the position limitation of fluid pressure type drilling jar in drill string is bigger, can only be in the advancing side of drill string.
At present, the producer that produces drilling jar abroad mainly contains companies such as Bowen, Haliburton, Dailey, Cougar, and domestic production producer mainly is Guizhou Gaofeng Machinery Factory and Beijing Petroleum Machinery plant.At the above problem that the fluid pressure type drilling jar in use exists, each producer has carried out local improvement to it from different perspectives both at home and abroad, but does not all have anti-error shake device basically, can not satisfy the instructions for use of complex hole condition.Practice in recent years shows, development along with China's drilling technology, complicated well quantity such as the domestic and ultradeep well abroad contracted, horizontal well, multilateral well, underbalance well grow with each passing day, in view of drilling jar the prevention and Treating Jammed Bit Accident aspect special role, more than complicated well in principle all should the design and installation drilling jar.But because complex formation, domestic conventional products reliability is relatively poor, and the external product price is very high, and drilling cost is high always, has greatly limited the application of drilling jar, and domestic drilling well circle urgently wishes to solve the reliability of products problem.
Summary of the invention
The purpose of this utility model is to provide a kind of and has anti-error shake, the fluid pressure type drilling jar of the band mechanical interlocking mechanism of various drilling technologies plurality of advantages, that be applicable to complicated wells such as comprising under balance pressure drilling, directional well such as link position freedom in drill string.
The utility model is achieved in that and comprises splined mandrel 1, mud-scraping ring 2, centralizer body 3, last black box 4, the stifled assembly 5 of oil, spline cylindrical shell 6, upper shell 7, the back of the body female 8, retaining ring 9, slips axle 10, spacing hole screw 11, limited block 12, adjustment hole screw 13, on hit adjusting nut 14, adjust cover 15, spacer 16, slips 17, slip sleeve 18, spacer 19, elastic mechanism assembly 20, middle cylinder body 21, lining 22, under hit adjusting nut 23, connector 24, prolong axle 25, valve body axle 26, lower shell 27, valve body assembly 28, lower seal assembly 29, piston 30, lower contact 31, splined mandrel 1 is connected with centralizer body 3, between splined mandrel 1 and the centralizer body 3 mud-scraping ring 2 is housed, splined mandrel 1 is housed in the spline cylindrical shell 6, between spline cylindrical shell 6 and splined mandrel 1, be provided with black box 4, the stifled assembly 5 of oil, spline cylindrical shell 6 is connected with upper shell 7, be provided with the back of the body female 8 between splined mandrel 1 and the upper shell 7, retaining ring 9, it is characterized in that: slips axle 10 is connected with splined mandrel 1, hit adjusting nut 14 being equipped with respectively between slips axle 10 and the middle cylinder body 21, elastic mechanism assembly 20, slips 17, slip sleeve 18, under hit adjusting nut 23, upper shell 7 passes through spacing hole screw 11 with middle cylinder body 21, limited block 12, adjustment hole screw 13 connects, slips axle 10, prolong axle 25, valve body axle 26 connects successively, prolong between axle 25 and the lower shell 27 connector 24 is housed, be respectively equipped with valve body assembly 28 between valve body axle 26 and the lower shell 27, lower seal assembly 29, piston 30, lower shell 27 is connected with lower contact 31.
The utility model also adopts following technical scheme:
The tube spring of three series connection constitutes elastic mechanism assembly 20.
The utility model is a kind of down-hole releasing tool that is connected in the drill string assembly, be a kind ofly have anti-error shake, the drilling jar of various drilling technologies plurality of advantages, that be applicable to complicated wells such as comprising under balance pressure drilling, directional well such as link position freedom in drill string, be characterized in: operating principle adopts the fluid pressure type structure of band mechanical interlocking mechanism, has overcome the problem that conventional hydraulic shock device easily produces " mistake shake "; Installation site in drill string is relatively free, can place most of position of tension, the point of neutralization, pressurized, has expanded the scope of application of fluid pressure type drilling jar greatly.Increase mechanical lock mechanism, set and hit the drill string pulling force of releasing force on it,, still make up a joint, touch the shaft bottom no matter be to creep into, make a trip greater than general drill-well operation, its hydraulic damping mechanism is not worked all the time, fundamentally avoided hydraulic shock device mistake shake problem in use.
Description of drawings
Fig. 1 is the utility model the first half structural representation;
Fig. 2 is the utility model the latter half structural representation;
Fig. 3 (a) is the mechanical interlocking mechanism principle figure;
Fig. 3 (b) is a mechanical interlocking mechanism principle partial enlarged drawing;
Fig. 3 (c) is a mechanical interlocking mechanism principle partial enlarged drawing;
Fig. 4 hits the operating principle structural representation under downward axial locking reaches.
The specific embodiment
As shown in Figure 1 and Figure 2, retaining mechanism is designed to the slip-type structure of Stroke Control, it mainly by slips axle 10, slips 17, slip sleeve 18, elastic mechanism assembly 20 and on hit adjusting nut 14 and form, slips axle 10 cylindricals have trapezoidal outer rib band, the endoporus of slip sleeve 18 has trapezoidal interior rib band, slips 17 is resilient sleeve that an endoporus and cylindrical all have the trapezoidal rib band that is complementary with slips axle 10, slip sleeve 18, the tube spring of three series connection constitutes elastic mechanism assembly 20, but on hit adjusting nut 14 regulated at will and set and hit releasing force on it.Drilling jar dispatches from the factory and during normal drillng operation, the locking of slips mechanism is in reset mode, and the interior rib band of slips 17 embeds in the groove of slips axle 10, and this moment, slips 17 " was held " slips axle 10 (Fig. 3 (a)) tightly.Because slips 17 be by spacing can not the moving of resilient sleeve of its upper end, thereby the slips axle can not upwards be moved axially, i.e. hydraulic damping mechanism does not work all the time, has avoided mistake shake fully.When needing the jarring operation, on carry drill string, the elastic mechanism stress deformation produces relative displacement (Fig. 3 (b)) between slips and the slip sleeve, simultaneously the upper drilling string generation elastic deformation that is stretched.When pulling force that drill string applies drilling jar reaches it and hits releasing force on predefined, elastic mechanism assembly 20 produces certain decrement, the rib tape error is opened in slips 17 outer rib bands and the slip sleeve 18, enter in the groove of rib band in the slip sleeve 18, slips 17 opens suddenly, and slips axle 10 is pulled out (Fig. 3 (c)) from slips 17 under the effect of drill string pulling force.At this moment, hydraulic damping mechanism starts working, and enters the hydraulic pressure time-delay stage, and the driller can increase and decrease hook as required and lift power, and then dynamic adjustments jarring tonnage.In case the hydraulic pressure time-delay finishes, the drill string sudden contraction that is stretched, the instantaneous relase of drill string energy stored produces powerful jarring force and impact energy, makes stuck point loosening, plays the effect of unfreezing.On-the-spot stirring with the adjusting spanner hit adjusting nut 14, makes it to produce axial displacement, thereby changes the relative position between slips 17 and the slip sleeve 18 rib bands, can reach the purpose of hitting releasing force in the adjusting easily.
Increase by one group of elastic mechanism assembly 20 (Fig. 4) in aforesaid retaining mechanism bottom.During the normal drillng operation of drilling jar, the locking of slips mechanism, the interior rib band of slips 17 embeds in the groove of slips axle 10, and slips 17 " is held " slips axle 10 tightly.Transfer drill string, when drill string pressure during less than certain value, because slips 17 can not be moved by the resilient sleeve of its lower end is spacing, thereby slips axle 10 can not be moved axially downwards, promptly there are not abrasive conditions in seal and sealing surface.Add that the described axle of epimere can not upwards move axially, therefore, installation site in drill string is relatively free, can place most of position of tension, the point of neutralization, pressurized, expanded the scope of application of fluid pressure type drilling jar greatly, having prevented the heel and toe wear of instrument, is the ideal tools in directional well and the horizontal well.
The utility model is applicable to various complicated well drilling technologies such as underbalance well, directional well, comprises the hydraulic delay mechanism that is made up of valve body axle 26, lower shell 27, valve body assembly 28, piston 30 and lower contact 31; By slips axle 10, on hit adjusting nut 14, adjust cover 15, slips 17, slip sleeve 18, spacer 19, elastic mechanism assembly 20, lining 22 and hit retaining mechanism about the mechanical type that adjusting nut 23 forms down; The mechanism of strike up and down that forms by the step surface of upper shell 7, the back of the body female 8 and slips axle 10; By mud-scraping ring 2, go up the upper-lower seal mechanism that black box 4 and lower seal assembly 29 are formed; The torque-transmitting mechanisms of forming by splined mandrel 1, spline cylindrical shell 6, centralizer body 3, spline cylindrical shell 6, upper shell 7, middle cylinder body 21, connector 24, lower shell 27 and lower contact 31; The bindiny mechanism up and down that forms by the two ends connecting thread of splined mandrel 1 and lower contact 31.In addition, the stifled assembly 5 of oil is realized the inside and outside medium-tight, the retaining ring 9 cooperation back ofs the body female 8 are as main anti-lost mechanism, and spacing hole screw 11, limited block 12 and adjustment hole screw 13 are as the release force governor motion, and spacer 16 and prolongation axle 25 mainly play the manufacturability interconnect functions.
Its mechanical interlocking mechanism mainly by slips axle 10, on hit adjusting nut 14, adjust cover 15, slips 17, slip sleeve 18, positioning sleeve 19, elastic mechanism assembly 20, lining 22 and under hit adjusting nut 23 and form, the cylindrical of slips axle 10 has trapezoidal outer rib band, the endoporus of slip sleeve 18 has trapezoidal interior rib band, slips 17 is resilient sleeve that its endoporus and cylindrical all have the trapezoidal rib band that is complementary with slips axle 10, slip sleeve 18, and the tube spring of three series connection constitutes elastic mechanism assembly 20.By on hit adjusting nut 14, slips 17, slip sleeve 18, elastic mechanism assembly 20 and under hit adjusting nut 23 and cooperate, realize controlling the axially movable purpose of slips axle, and then can avoid mistake shake and heel and toe wear, make its installation site in drill string relatively free, can place most of position of tension, the point of neutralization, pressurized, and realize hitting up and down the function of one.Last hit adjusting nut 14 and hit down on the circumference of adjusting nut 23 several regulating tanks are arranged respectively, groove of every adjusting, on hit releasing force or under hit release force with corresponding increase or reduce certain tonnage.
Claims (5)
1, the fluid pressure type drilling jar of band mechanical interlocking mechanism, comprise splined mandrel (1), mud-scraping ring (2), centralizer body (3), last black box (4), the stifled assembly (5) of oil, spline cylindrical shell (6), upper shell (7), the back of the body female (8), retaining ring (9), slips axle (10), spacing hole screw (11), limited block (12), adjustment hole screw (13), on hit adjusting nut (14), adjust cover (15), spacer (16), slips (17), slip sleeve (18), spacer (19), elastic mechanism assembly (20), middle cylinder body (21), lining (22), under hit adjusting nut (23), connector (24), prolong axle (25), valve body axle (26), lower shell (27), valve body assembly (28), lower seal assembly (29), piston (30), lower contact (31), splined mandrel (1) is connected with centralizer body (3), between splined mandrel (1) and the centralizer body (3) mud-scraping ring (2) is housed, splined mandrel (1) is housed in the spline cylindrical shell (6), between spline cylindrical shell (6) and splined mandrel (1), be provided with black box (4), the stifled assembly (5) of oil, spline cylindrical shell (6) is connected with upper shell (7), be provided with the back of the body female (8) between splined mandrel (1) and the upper shell (7), retaining ring (9), it is characterized in that: slips axle (10) is connected with splined mandrel (1), between slips axle (10) and middle cylinder body (21), be equipped with respectively and hit adjusting nut (14), elastic mechanism assembly (20), slips (17), slip sleeve (18), under hit adjusting nut (23), in slips (17), spacer (16) is equipped with at the two ends of slip sleeve (18) respectively, spacer (19), upper shell (7) passes through spacing hole screw (11) with middle cylinder body (21), limited block (12), adjustment hole screw (13) connects, slips axle (10), prolong axle (25), valve body axle (26) connects successively, prolong between axle (25) and the lower shell (27) connector (24) is housed, be respectively equipped with valve body assembly (28) between valve body axle (26) and the lower shell (27), lower seal assembly (29), piston (30), lower shell (27) is connected with lower contact (31).
2, the fluid pressure type drilling jar of band mechanical interlocking according to claim 1 mechanism, it is characterized in that: slips axle (10) cylindrical has trapezoidal outer rib band, and the endoporus of slip sleeve (18) has trapezoidal interior rib band.
3, the fluid pressure type drilling jar of band mechanical interlocking according to claim 1 mechanism, it is characterized in that: slips (17) is the resilient sleeve that endoporus and cylindrical all have the trapezoidal rib band that is complementary with slips axle (10), slip sleeve (18).
4, the fluid pressure type drilling jar of band mechanical interlocking according to claim 1 mechanism is characterized in that: the tube spring of three series connection constitutes elastic mechanism assembly (20).
5, the fluid pressure type drilling jar of band mechanical interlocking according to claim 1 mechanism, it is characterized in that: upper shell (7), middle cylinder body (21), lower shell (27) connect successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520112147 CN2806752Y (en) | 2005-07-01 | 2005-07-01 | Hydraulic drilling jar with mechanical interlock mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520112147 CN2806752Y (en) | 2005-07-01 | 2005-07-01 | Hydraulic drilling jar with mechanical interlock mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2806752Y true CN2806752Y (en) | 2006-08-16 |
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ID=36921053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520112147 Expired - Lifetime CN2806752Y (en) | 2005-07-01 | 2005-07-01 | Hydraulic drilling jar with mechanical interlock mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2806752Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892815A (en) * | 2010-07-13 | 2010-11-24 | 扬州天业石油机械有限公司 | Hydromechanical drilling jar |
| CN103470247A (en) * | 2012-06-07 | 2013-12-25 | 中国石油天然气集团公司 | Jar/damper capable of realizing signal transmission |
| CN110541682A (en) * | 2019-09-26 | 2019-12-06 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Sound jar and using method thereof |
-
2005
- 2005-07-01 CN CN 200520112147 patent/CN2806752Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892815A (en) * | 2010-07-13 | 2010-11-24 | 扬州天业石油机械有限公司 | Hydromechanical drilling jar |
| CN101892815B (en) * | 2010-07-13 | 2013-07-17 | 扬州天业石油机械有限公司 | Hydromechanical drilling jar |
| CN103470247A (en) * | 2012-06-07 | 2013-12-25 | 中国石油天然气集团公司 | Jar/damper capable of realizing signal transmission |
| CN103470247B (en) * | 2012-06-07 | 2016-08-10 | 中国石油天然气集团公司 | A kind of bumper jar/amortisseur realizing signal transmission |
| CN110541682A (en) * | 2019-09-26 | 2019-12-06 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Sound jar and using method thereof |
| CN110541682B (en) * | 2019-09-26 | 2024-03-15 | 中国石油天然气集团有限公司 | Sound jar and use method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150701 Granted publication date: 20060816 |
|
| EXPY | Termination of patent right or utility model |