CN204782895U - Horizontal well unfreezing jar accelerator - Google Patents
Horizontal well unfreezing jar accelerator Download PDFInfo
- Publication number
- CN204782895U CN204782895U CN201520474945.7U CN201520474945U CN204782895U CN 204782895 U CN204782895 U CN 204782895U CN 201520474945 U CN201520474945 U CN 201520474945U CN 204782895 U CN204782895 U CN 204782895U
- Authority
- CN
- China
- Prior art keywords
- accelerator
- jar
- transmission shaft
- unfreezing
- horizontal well
- 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.)
- Active
Links
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model discloses a horizontal well unfreezing jar accelerator is particularly useful for the operation of unfreezing in the pit of horizontal well. This accelerator includes transmission shaft and center tube, and the transmission shaft is connected with the transmission cover through connecting the key, is equipped with the energy -stored spring in the seating nipple of center tube outside, the accelerator top connection is passed through on the upper portion of transmission shaft or the oil pipe coupling is connected with the jarring booster, the lower part is connected with the center tube, and seating nipple upper portion is connected with the transmission cover, the lower part is passed through the accelerator connector and is connected with the bumper jar, the transmission shaft can drive center tube rebound compression energy -stored spring. Be connected with the utility model discloses an unfreezing tubular column utilizes water conservancy anchor and jarring booster, can replace the tensile energy storage of upper portion tubular column, reduces the burden requirement to surface equipment, and light maintenance operation derrick utilizes the oil pipe cluster also can realize jarring unfreezing operation, improves to know to clamp the suitability of putting, overcomes the influence of pit shaft frictional resistance, realizes can the improve the standard success rate of well unfreezing of jarring unfreezing in the horizontal segment.
Description
Technical field
The utility model belongs to down-hole unfreezing power tool and the technique of petroleum industry, particularly a kind of horizontal well unfreezing jar accelerator, is particularly useful for the down-hole unfreezing operation of horizontal well.
Background technology
Bumper jar is the important tool removing down-hole lock of tool drilling, its application has expanded to the field of horizontal well and high angle hole, current each elephant generally applies the instrument of compensation hydraulic formula bumper jar as jarring releasing, it mainly produces the jarring tool of the power of hitting, be made up of parts such as axle, shock cover, tapered piston and fluid cylinder covers, the parts such as axle, tapered piston and fluid cylinder cover rely on combination sealing to constitute airtight hydraulic cavities, be full of turbine oil in chamber, and be upper and lower two chambeies by the packing of hydraulic delay mechanism.During work, bumper jar axle is connected with equipment hook by top drilling tool.Fluid cylinder cover is connected with fish by fishing tool.Operation starts, and first transfers drilling tool and bumper jar cuts out, then, carry drilling tool fast, because the relative fluid cylinder wall of tapered piston forms self sealss, force the fluid of sap cavity to flow through hydraulic delay mechanism and by throttling, produce motion time delay, make top drilling tool produce elastic deformation and put aside deformation energy.When the hydraulic delay mechanism kinematic up with axle extremely discharges the big orifice place in chamber, the deformation energy of drilling tool savings, with throttling high pressure suddenly disappear and abrupt release, change kinetic energy upwards into, the parts such as bumper jar axle are driven upwards to do variable accelerated motion, shock is overlapped and produces a strong shock with retaining step, thus jarring releasing is realized to stuck point.
But original jarring releasing process application exists following problem in horizontal well: the pit shaft frictional resistance of horizontal well is very large, consumed by frictional resistance during the elastic energy of deformation release that bumper jar top rod post stores, shock effect is undesirable, even can not produce jarring.Therefore, be well jarring releasing efficiency of improving the standard, need a kind of bumper stuck releasing device being applicable to horizontal well, expand the application of jarring releasing technology.
Summary of the invention
The purpose of this utility model is to provide a kind of horizontal well unfreezing jar accelerator, is applied to horizontal well, improve the standard well jarring releasing efficiency and result of use, the unfreezing success rate of well of improving the standard.
Technical solution of the present utility model is:
A kind of horizontal well unfreezing jar accelerator comprises power transmission shaft and central tube, and power transmission shaft is connected with drive sleeve by connecting key, in the seating nipple outside central tube, energy-stored spring is housed; The top of power transmission shaft is by accelerator top connection or tubing coupling is connected with jarring booster, bottom is connected with central tube, and seating nipple top is connected with drive sleeve, bottom is connected with bumper jar by accelerator connector; Power transmission shaft can drive central tube to move up compressed energy-storage spring.
Remarkable result of the present utility model is: the horizontal well jarring releasing tubing string that this device is housed, from the bottom to top: fishing tool+bumper jar+jar accelerator+jarring booster+hydraulic anchor+oil pipe string.After going into the well, first fishing tool engaging fish is used, hydraulic pressure is beaten in oil pipe, strut hydraulic anchor anchor fluke, simultaneously jarring booster hydraulic mechanism fast uplink and drive the central tube of jar accelerator up, due to the effect of the hydraulic delay mechanism of bumper jar, its axle and the seating nipple speed uplink relative delay of jar accelerator that is attached thereto many
,therefore the central tube of jar accelerator is with regard to the high strength energy-stored spring in compression work cylinder, carries out spring energy storage.When the tapered piston of the hydraulic delay mechanism of bumper jar arrives release chamber, the elastic potential energy abrupt release that jar accelerator stores, be converted into the kinetic energy of bumper jar axle, pack into row to shock and once clash into, the fishing tool driving bottom to connect carries out a jarring releasing to fish.Repeatedly operate by this step, until by card fish or the smooth unfreezing of tubing string.
In sum, major advantage of the present utility model is:
1, the utility model is connected between jarring booster and bumper jar, can overcome the impact of pit shaft frictional resistance, jarring is accelerated, in horizontal segment, realizes jarring releasing;
2, card-dispelling tubular pile of the present utility model is connected with, utilize hydraulic anchor and jarring booster, top tubing string stretching accumulation of energy can be replaced, reduce the burden requirement to ground installation, light maintenance workover derrick utilizes oil pipe string also can realize jarring releasing operation, improves the applicability of release device;
3, after being connected to the utility model in card-dispelling tubular pile, horizontal well reinforcement solution clipping technique can be combined with jarring releasing technique, two kinds of technique blocked operations, mutually auxiliary, can to improve the standard the success rate of well unfreezing, greatly to reduce the operating cost of horizontal well, remarkable in economical benefits.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the connection diagram of the utility model in jarring releasing tubing string.
Fig. 3 is the structural representation of the jarring booster connected in card-dispelling tubular pile.
Fig. 4 is the structural representation of the bumper jar connected in card-dispelling tubular pile.
Detailed description of the invention
Below in conjunction with accompanying drawing in detail the utility model is described in detail, and unrestricted protection domain of the present utility model.See Fig. 1, a kind of horizontal well unfreezing jar accelerator comprises power transmission shaft 4.10 and central tube 4.7, and power transmission shaft 4.10 is connected with drive sleeve 4.9 by connecting key 4.8, in the seating nipple 4.4 outside central tube 4.7, energy-stored spring 4.3 is housed; The top of power transmission shaft 4.10 is connected with jarring booster 5 by accelerator top connection 4.12 or tubing coupling, bottom is connected with central tube 4.7, and seating nipple 4.4 top is connected with drive sleeve 4.9, bottom is connected with bumper jar 3 by accelerator connector 4.1; Power transmission shaft 4.10 can drive central tube 4.7 to move up compressed energy-storage spring 4.3.Power transmission shaft 4.10 is reducing tubular shafts, is provided with centre bore, and its top is glissile segment, and bottom is linkage section, is provided with spline is connected with connecting key 4.8 at the middle part cylindrical of linkage section, and the external diameter of glissile segment is less than the external diameter of linkage section; Be provided with screw thread on glissile segment top to be connected with accelerator top connection 4.12, be provided with internal thread in the bottom inner circle of linkage section and be connected with central tube 4.7.Drive sleeve 4.9 and connecting key 4.8, the inner circle of drive sleeve 4.9 is provided with keyway and installs connecting key 4.8, and this connecting key 4.8 is connected with the spline of power transmission shaft 4.10 bottom linkage section, and power transmission shaft 4.10 and central tube 4.7 can be slided up and down in drive sleeve 4.9; The top of drive sleeve 4.9 is threaded with pressure cap 4.11, and power transmission shaft 4.10 can slide in pressure cap 4.11, and the lower surface of pressure cap 4.11 coordinates with the upper surface of power transmission shaft 4.10 linkage section.Energy-stored spring 4.3 is set on central tube 4.7, and upper/lower terminal is equipped with socket 4.5 and base 4.2 respectively, and socket 4.5 top is connected with drive sleeve 4.9, bottom is connected with seating nipple 4.4; Base 4.2 is provided with liquid flow hole, and be arranged in seating nipple 4.4, top inner circle is threaded with central tube 4.7, and lower end surface leans the upper surface at accelerator connector 4.1, and the bottom inner circle of seating nipple 4.4 is threaded with accelerator connector 4.1.Energy-stored spring 4.3 is at least installed a set of, is supported, only on the base 4.2 of bottom, arrange liquid flow hole between two cover energy-stored springs 4.3 by spigot 4.6 and socket 4.5.The inner circle of pressure cap 4.11 is provided with vertical slot, and the cylindrical of power transmission shaft 4.10 linkage section is provided with spline.The inner circle of socket 4.5 and the cylindrical of spigot 4.6 or base 4.2 are equipped with vertical slot.Accelerator top connection 4.12 or tubing coupling are connected with the lower contact 5.1 of jarring booster 5 by oil pipe 7; Accelerator connector 4.1 is connected with the axle 3.11 of bumper jar 3 by oil pipe 7.Jar accelerator 4 more than two covers can be installed in series in jarring releasing tubing string.
Below in conjunction with the structure of card-dispelling tubular pile and the jarring booster 5 be connected in card-dispelling tubular pile and bumper jar 3, the construction method of the utility model jar accelerator 4 be connected in tubing string is elaborated.
See Fig. 2, Fig. 3 and Fig. 4, going into the well in card-dispelling tubular pile, between bumper jar 3 and jarring booster 5, connecting jar accelerator 4 by oil pipe 7.Bumper jar 3 is by bumper jar lower contact 3.1, seeker 3.2, bumper jar fluid cylinder cover 3.6, bumper jar adapter sleeve 3.8, spline housing 3.10, axle 3.11 is connected in turn by screw thread, each connection sealing place seals by sealing ring 3.7, axle 3.11 bottom and bumper jar fluid cylinder overlap between 3.6 annular spaces and are provided with tapered piston 3.5, tapered piston 3.5 is sleeved on throat bushing 3.4, the inwall composition of tapered piston 3.5 and bumper jar fluid cylinder cover 3.6 is just to firm slipper seal, composition hydraulic delay mechanism, the top of bumper jar fluid cylinder cover 3.6 is provided with extension diameter section, as the release chamber of tapered piston 3.5, bumper jar fluid cylinder overlaps 3.6 bottoms and is provided with oil filler point 3.3, shutoff again after turbine oil can be injected in the working chamber of bumper jar fluid cylinder cover 3.6 by this hole.In the inner chamber of bumper jar adapter sleeve 3.8, be provided with by screw thread in the middle and upper part of axle 3.11 and clash into cover 3.9, this shock cover 3.9 and spline housing 3.10 form impact system.Jarring booster 5 is made up of lower contact 5.1, piston bush 5.4, booster fluid cylinder cover 5.6, booster adapter sleeve 5.8, urceolus 5.9, booster central tube 5.5 is connected by booster connector 5.7, booster central tube 5.5 top is connected with booster top connection 5.10, booster central tube 5.5 bottom is connected with ball seat 5.2, ball seat 5.2 is provided with conical seal (contact) face, formed with setting ball 5.11 and seal, present blocking 5.11 top is provided with baffle plate 5.12, baffle plate 5.12 is connected with ball seat 5.2 by screw thread, prevents setting ball 5.11 freely movable.Each connection needs sealing place to seal by sealing ring, is equipped with inlet opening 5.3 at the middle part of booster connector 5.7 and ball seat 5.2, and inlet opening 5.3 two ends are equipped with sealing ring, forms seal cavity.
Construction method of the present utility model, is:
A, first bumper stuck releasing device is connected in card-dispelling tubular pile, down to the Position on the top of the fish of fish 1, by fishing tool 2 engaging fish 1, presses down card-dispelling tubular pile, bumper jar 3 cuts out;
B, beat hydraulic pressure by ground pump truck to oil pipe 7 huge discharge, make the anchor fluke of hydraulic anchor 6 overhang the inwall biting sleeve pipe 8;
C, jarring booster 5 are setting and drive the top connection 4.12 of jar accelerator 4 up, for energy-stored spring 4.3 preserves energy;
D, when the tapered piston 3.5 of bumper jar 3 enters the release chamber of fluid cylinder cover 3.6, the elasticity energy abrupt release that energy-stored spring 4.3 in jar accelerator 4 is put aside, the stuck point of bumper jar 3 pairs of fish 1 is driven to implement a jarring releasing;
If the stuck point of E fish 1 fails unfreezing, strengthen ground pump pressure, reinforcement unfreezing;
If the reinforcement unfreezing of F to fish 1 is still unsuccessful, again transfers card-dispelling tubular pile and repeat above-mentioned steps, until unfreezing success.
During construction, first connect horizontal well jarring releasing tubing string, down to Position on the top of the fish, by dragging for lance 2 engaging fish 1, press down tubing string, bumper jar 3 cuts out.Then hydraulic pressure is beaten by ground pump truck to oil pipe 7 huge discharge, the anchor fluke of hydraulic anchor 6 overhangs the inwall biting sleeve pipe 8,5.11, the setting ball of jarring booster 5 is on the sealing cone of ball seat 5.2, confined space is formed at top, sealing ring is all installed in inlet opening 5.3 two ends of ball seat 5.2 and booster connector 5.7, form hydraulic-feed mechanism, hydraulic-feed mechanism can be designed to 2 grades or multistage on demand, can produce larger thrust.Hydraulic pressure is transmitted by inlet opening 5.3 and promotes piston bush 5.4 and booster adapter sleeve 5.8 fast uplink, piston bush 5.4 drives the accelerator top connection 4.12 of jar accelerator 4 up by lower contact 5.1, accelerator top connection 4.12 drives central tube 4.7 up by power transmission shaft 4.10, the spigot 4.6 that the base 4.2 that central tube 4.7 drives bottom to connect is connected with centre is up, compressed energy-storage spring 4.3 simultaneously, storage elasticity potential energy, until the upper surface of power transmission shaft 4.10 linkage section is pushed up on pressure cap 4.11, prevent energy-stored spring 4.3 excess compression.Because pressure cap 4.11 is connected with accelerator connector 4.1 in turn by drive sleeve 4.9, socket 4.5, seating nipple 4.4, power transmission shaft 4.10 promotes pressure cap 4.11 and continues up, drive accelerator connector 4.1 up simultaneously, accelerator connector 4.1 is connected with the axle 3.11 of bumper jar 3, axle 3.11 drives seeker 3.2 up, the top cylindrical step-shaped top of seeker 3.2 forms end face seal on the lower surface of tapered piston 3.5, tapered piston 3.5 and bumper jar fluid cylinder overlap the sealing surface fitted seal of 3.6, and tapered piston 3.5 extrudes the turbine oil of upper space.Because the lower surface of tapered piston 3.5 is provided with very little drain pan, allow the slow earial drainage of turbine oil of tapered piston 3.5 upper space, play time-lag action, tapered piston 3.5 is slowly up simultaneously, when overlapping the release chamber of 3.6 Deng arrival bumper jar fluid cylinder, due to internal diameter sudden enlargement, flow to the lower space of tapered piston 3.5 quickly through large gap by the turbine oil that compresses, hydraulic damping effect was lost efficacy, make the elasticity energy abrupt release that in jar accelerator 4, energy-stored spring 4.3 is put aside, be converted to the kinetic energy of the drive sleeve 4.9 of jar accelerator 4 and the axle 3.11 of seating nipple 4.4 and bumper jar 3, axle 3.11 drives shock cover 3.9 upwards to do variable accelerated motion, the lower surface of spline housing 3.10 is produced and once clashes into, spline housing 3.10 is by bumper jar adapter sleeve 3.8, jarring force is passed to fishing tool 2 by bumper jar fluid cylinder cover 3.6 and bumper jar lower contact 3.1, thus a jarring releasing is implemented to the stuck point of fish 1.After the tapered piston 3.5 of bumper jar 3 discharges and produces and clash into, if also non-unfreezing, can raise ground pump truck pressure, what utilize jarring booster 5 to produce is huge to lifting force, again implements reinforcement unfreezing to fish 1.If unfreezing effect is undesirable, again can transfers card-dispelling tubular pile and again make bumper jar 3 close, re-start jarring releasing, repeatedly carry out by this scheme, until fish 1 unfreezing is pulled out.
The utility model is not limited to above-mentioned preferred forms, anyone other any or akin products identical with the utility model drawn under enlightenment of the present utility model, all drops within protection domain of the present utility model.
Claims (9)
1. a horizontal well unfreezing jar accelerator, it is characterized in that, comprise power transmission shaft (4.10) and central tube (4.7), power transmission shaft (4.10) is connected with drive sleeve (4.9) by connecting key (4.8), in the seating nipple (4.4) of central tube (4.7) outside, energy-stored spring (4.3) is housed; The top of power transmission shaft (4.10) is by accelerator top connection (4.12) or tubing coupling is connected with jarring booster (5), bottom is connected with central tube (4.7), and seating nipple (4.4) top is connected with drive sleeve (4.9), bottom is connected with bumper jar (3) by accelerator connector (4.1); Power transmission shaft (4.10) can drive central tube (4.7) to move up compressed energy-storage spring (4.3).
2. a kind of horizontal well unfreezing jar accelerator according to claim 1, it is characterized in that, described power transmission shaft (4.10) is reducing tubular shafts, is provided with centre bore, its top is glissile segment, bottom is linkage section, be provided with spline at the middle part cylindrical of linkage section to be connected with connecting key (4.8), the external diameter of glissile segment is less than the external diameter of linkage section; Be provided with screw thread to be connected with accelerator top connection (4.12) on glissile segment top, be provided with internal thread in the bottom inner circle of linkage section and be connected with central tube (4.7).
3. a kind of horizontal well unfreezing jar accelerator according to claim 2, it is characterized in that, described drive sleeve (4.9) and connecting key (4.8), the inner circle of drive sleeve (4.9) is provided with keyway and installs connecting key (4.8), this connecting key (4.8) is connected with the spline of power transmission shaft (4.10) bottom linkage section, and power transmission shaft (4.10) and central tube (4.7) can be slided up and down in drive sleeve (4.9); The top of drive sleeve (4.9) is threaded with pressure cap (4.11), power transmission shaft (4.10) can slide in pressure cap (4.11), and the lower surface of pressure cap (4.11) coordinates with the upper surface of power transmission shaft (4.10) linkage section.
4. a kind of horizontal well unfreezing jar accelerator according to claim 1, it is characterized in that, described energy-stored spring (4.3) is set on central tube (4.7), upper/lower terminal is equipped with socket (4.5) and base (4.2) respectively, and socket (4.5) top is connected with drive sleeve (4.9), bottom is connected with seating nipple (4.4); Base (4.2) is provided with liquid flow hole, be arranged in seating nipple (4.4), top inner circle is threaded with central tube (4.7), lower end surface leans the upper surface in accelerator connector (4.1), and the bottom inner circle of seating nipple (4.4) is threaded with accelerator connector (4.1).
5. a kind of horizontal well unfreezing jar accelerator according to claim 4, it is characterized in that, described energy-stored spring (4.3) is at least installed a set of, supported by spigot (4.6) and socket (4.5) between two covers energy-stored spring (4.3), only liquid flow hole is set on the base (4.2) of bottom.
6. a kind of horizontal well unfreezing jar accelerator according to claim 3, it is characterized in that, the inner circle of described pressure cap (4.11) is provided with vertical slot, and the cylindrical of power transmission shaft (4.10) linkage section is provided with spline.
7. a kind of horizontal well unfreezing jar accelerator according to claim 5, is characterized in that, the inner circle of described socket (4.5) and the cylindrical of spigot (4.6) or base (4.2) are equipped with vertical slot.
8. a kind of horizontal well unfreezing jar accelerator according to claim 1, it is characterized in that, described accelerator top connection (4.12) or tubing coupling are connected with the lower contact (5.1) of jarring booster (5) by oil pipe (7); Accelerator connector (4.1) is connected with the axle (3.11) of bumper jar (3) by oil pipe (7).
9. a kind of horizontal well unfreezing jar accelerator according to claim 1, is characterized in that, jar accelerator more than two covers can be installed in series in jarring releasing tubing string.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520474945.7U CN204782895U (en) | 2015-07-06 | 2015-07-06 | Horizontal well unfreezing jar accelerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520474945.7U CN204782895U (en) | 2015-07-06 | 2015-07-06 | Horizontal well unfreezing jar accelerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204782895U true CN204782895U (en) | 2015-11-18 |
Family
ID=54522963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520474945.7U Active CN204782895U (en) | 2015-07-06 | 2015-07-06 | Horizontal well unfreezing jar accelerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204782895U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110165845A (en) * | 2019-04-25 | 2019-08-23 | 乌江渡发电厂 | A kind of manual keystroke device for Hydropower Unit rotor magnetic pole key |
| CN112253026A (en) * | 2020-10-19 | 2021-01-22 | 德仕能源科技集团股份有限公司 | Small-pipe-diameter inner micro-pipe shocking, boosting drawing, sleeving, grinding and milling integrated process |
| CN112324378A (en) * | 2020-11-02 | 2021-02-05 | 海塔石油科技有限公司 | Pipe column vibration-impact hydraulic reinforcement stuck freeing device, stuck freeing equipment and stuck freeing method |
| CN113323614A (en) * | 2021-08-02 | 2021-08-31 | 中国石油集团川庆钻探工程有限公司 | Hydraulic upper-impact impactor for coiled tubing and coiled tubing tool |
-
2015
- 2015-07-06 CN CN201520474945.7U patent/CN204782895U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110165845A (en) * | 2019-04-25 | 2019-08-23 | 乌江渡发电厂 | A kind of manual keystroke device for Hydropower Unit rotor magnetic pole key |
| CN110165845B (en) * | 2019-04-25 | 2021-07-16 | 乌江渡发电厂 | Manual keying device for rotor magnetic pole key of hydroelectric generating set |
| CN112253026A (en) * | 2020-10-19 | 2021-01-22 | 德仕能源科技集团股份有限公司 | Small-pipe-diameter inner micro-pipe shocking, boosting drawing, sleeving, grinding and milling integrated process |
| CN112324378A (en) * | 2020-11-02 | 2021-02-05 | 海塔石油科技有限公司 | Pipe column vibration-impact hydraulic reinforcement stuck freeing device, stuck freeing equipment and stuck freeing method |
| CN113323614A (en) * | 2021-08-02 | 2021-08-31 | 中国石油集团川庆钻探工程有限公司 | Hydraulic upper-impact impactor for coiled tubing and coiled tubing tool |
| CN113323614B (en) * | 2021-08-02 | 2021-10-19 | 中国石油集团川庆钻探工程有限公司 | Hydraulic upper-impact impactor for coiled tubing and coiled tubing tool |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104989310A (en) | Horizontal well jarring jam releasing device and construction method thereof | |
| CN204782895U (en) | Horizontal well unfreezing jar accelerator | |
| CN204060596U (en) | A kind of down-hole unfreezing hydraulic force increasing device | |
| CN205689156U (en) | A kind of high-adaptability stress decentralized bidirectional hydraulic drilling jar | |
| CN109763851B (en) | Anchor with anchoring force grading early warning function and reciprocating flexible deformation yielding characteristic and method | |
| CN205089342U (en) | Stock is warp to soft rock roadway support constant -resistance | |
| CN104234654B (en) | A kind of underground hydraulic pressure bumper stuck releasing device | |
| CN110847837A (en) | Bidirectional hydraulic resistance type drilling jar | |
| CN203476271U (en) | Ground hydraulic drilling jar for deep well and extra-deep well | |
| CN104329073A (en) | Delay-to-open sliding sleeve | |
| CN204311987U (en) | A kind of tubing string plug slip-type underground snubber | |
| CN104533331A (en) | Method and device for achieving shock through circulating drilling fluid | |
| CN204299558U (en) | Delayed start-up sliding sleeve | |
| CN202338261U (en) | Repeated oil pipe plug | |
| CN105781464A (en) | Single-cylinder and double-acting hydraulic while-drilling jar | |
| CN204899827U (en) | Two -way jarring unfreezing device | |
| CN105756597B (en) | A kind of bumper jar | |
| CN109057732B (en) | Slurry type grouting circulating device and using method thereof | |
| CN109025875B (en) | Hydraulic differential mechanism with built-in steel balls | |
| CN204140378U (en) | A kind of polymer-injecting pump | |
| CN207509137U (en) | A kind of throttle orifice pipe hydraulic pressure drawer | |
| CN103452512A (en) | Ground hydraulic super jar | |
| CN113738314B (en) | Integrated pump-suction combined operation pressurized rotary pump pipe column and plugging tool and method | |
| CN108397150A (en) | A kind of connecting pipes impactor | |
| CN114909080A (en) | Pulse hydraulic impactor and drilling and filling integrated pulse grouting method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |