1. Drilling jar is connected with drill tool and worked with drill string is a downhole stuck freeing tool in drilling operation .It is a first selected tool for directional well,complicated well and deep well.
2. The drilling jar is consisting of ZSJ type drilling up jar and ZXJ type drilling down jar,both they can be used mutually or operated separately .
3. The up jarring section takes use of hydraulic mechanism,the jarring force can be adjusted according to up elevating load but can not exceed the max.load for tool load rated .
4.The down jarring section takes use of mechanical friction mechanism, the jarring force is well preadjusted by adjusting device before put into downhole.No re-adjustment can be allowed after jar is put into downhole.
1.Description: The mechanical-hydraulic drilling jar is a jarring and stuck releasing tool. It integrates the up jar and down jar and can release the stuck accident occurring during drilling operation. The drilling jar is an ideal tool for directional well and deep well drilling. Operating principle 1.Operating principle of up jar Lifting drilling tool, slip assembly which bear the acting of dish reed elastic force and slip locking force compels latch mechanism of slip clasp slip mandrel. While slip mandrel up run with mandrel to overcome slip locking force and damping action between hydraulic valve assembly and spindle extension, jar Make drill stem accumulate energy, delay time. When mandrel up run to the state of release constraint, elastic potential energy accumulated in drill stem will convert to upward kinetic energy, generate up jar. If need sequence up jar, you need fed off drilling tool till relock latch mechanism, reduplication above process, Generate sequence up jar. 2.Operating principle of down jar The loosen load of down jar lock can be transfer as per in demand .There are a certain ratio between up locking force and down locking force , and the ratio is adjustable. If down jar, fed off drilling tool until pressure reach to down locking force, jar should generate down jar force. If need to repeat jar, lifting drilling tool to anew securing position repeat above process.
1.Description: The mechanical-hydraulic drilling jar is a jarring and stuck releasing tool. It integrates the up jar and down jar and can release the stuck accident occurring during drilling operation. The drilling jar is an ideal tool for directional well and deep well drilling. Operating principle 1.Operating principle of up jar Lifting drilling tool, slip assembly which bear the acting of dish reed elastic force and slip locking force compels latch mechanism of slip clasp slip mandrel. While slip mandrel up run with mandrel to overcome slip locking force and damping action between hydraulic valve assembly and spindle extension, jar Make drill stem accumulate energy, delay time. When mandrel up run to the state of release constraint, elastic potential energy accumulated in drill stem will convert to upward kinetic energy, generate up jar. If need sequence up jar, you need fed off drilling tool till relock latch mechanism, reduplication above process, Generate sequence up jar. 2.Operating principle of down jar The loosen load of down jar lock can be transfer as per in demand .There are a certain ratio between up locking force and down locking force , and the ratio is adjustable. If down jar, fed off drilling tool until pressure reach to down locking force, jar should generate down jar force. If need to repeat jar, lifting drilling tool to anew securing position repeat above process. Main feature: Drilling jar with national oilwell varco Hydromechanical drilling jar halliborton Operating manual double acting drilling jar Used in geothermal drilling and wells
Drilling Jar Type BZ is full mechanical type drilling jar and releasing stuck tool. The Drilling Jar integrates the upward jarring with the downward jarring so that it can release from the tight pull or the sticking etc. during drilling. The load(jarring force)scope of the upward jarring and the downward jarring is so wide that it can be adjusted in the maintenance station or in the well site according to the requirement. The special flexible joint can reduce the flexural stress of the drilling jar body efficiently. So it is the first selected drilling jar for vertical well, deep sell, directional well and complicated well operations.
Drilling Jar QJK type drilling jar while drilling is a fully mechanical jar with integrated upper and lower strikes. It has the advantages of simple structure, short length, convenient maintenance and disassembly. QJ-A type drilling jar while drilling is also a kind of all-mechanical jar. Its structural features are that the release force can be adjusted on-site, the setting is accurate, and it is easy to disassemble and assemble, which is suitable for drilling while working under various circumstances. QYA type drilling jar while drilling is a fully hydraulic type drilling jar while drilling with upper and lower strikes.It has many advantages such as simple operation, large shock force, convenient adjustment, high connection strength, stable performance, safety and reliability, and easy maintenance. This product does not cause false shocks when drilling, drilling, receiving a single or touching the bottom of the well, and its hydraulic delay allows the operator to dynamically adjust the size of the upper and lower strike force. Fully sealed oil bath lubrication helps reduce wear and increase service life. In addition. Its position in the drill string assembly is relatively free, and it can be placed in various positions such as tension, neutral point, and compression. It can meet the needs of drilling operations under various operating conditions such as land and sea.
ZSJ/ZXJ Type Drilling Jar (hydraulic-mechanically) The drilling jar which is connected with drill tool and worked with drill string is a downhole stuck freeing tool in drilling operation .It is a first selected tool for directional well,complicated well and deep well.The drilling jar is consisting of ZSJ type drilling up jar and ZXJ type drilling down jar,both they can be used mutually or operated separately .The up jarring section takes use of hydraulic mechanism,the jarring force can be adjusted according to up elevating load but can not exceed the max.load for tool load rated .The down jarring section takes use of mechanical friction mechanism, the jarring force is well preadjusted by adjusting device before put into downhole.No re-adjustment can be allowed after jar is put into downhole.
Lhbz mechanical drilling jar is a full mechanical drilling jar, it also can be use as fishing tool. It generates upward jarring as well as downward jarring which can solve tight pull or sticking troubles during drilling. It is the first optional drilling jar for vertical well, deep well, directional well and complicated well operations. Model, lhbz121, lhbz165/159, lhbz203/197 Od mm(inch), 121 (4 3/4), 165(6 1/2) /159(6 1/4), 203(8) 197( 7 3/4) Id mm(inch), 50.8 (2), 57.2( 2 1/4), 71.4(2 13/16) Oal(locking place)mm (inch), 6370(251), 7015(276), 7310 (288) Upper stroke mm (inch), 210 ( 8 1/4), 142( 5 9/16), 145 (5 11/16) Lower stroke mm (inch), 197 (7 3/4), 172 (6 3/4), 178 (7) Conn., nc38, nc50, 6 5/8reg Max. Tensile load(mn), 1.4, 2.2, 2.5 Max. Working torque (kn. M), 13, 15, 20 Upward jarring force(kn), 450, 630, 820 Downward jarring force(kn), 230, 360, 460 Pumping area(cmâ²), 62, 100, 174
Drilling jar Drilling tool Lhbz mechanical drilling jar is a full mechanical drilling jar, it also can be used as fishing tool. It generates upward jarring as well as downward jarring which can solve tight pull or sticking troubles during drilling. It is the first optional drilling jar for vertical well, deep well, directional well and complicated well operations.
1. Drilling jar is connected with drill tool and worked with drill string is a downhole stuck freeing tool in drilling operation .It is a first selected tool for directional well,complicated well and deep well. 2. The drilling jar is consisting of ZSJ type drilling up jar and ZXJ type drilling down jar,both they can be used mutually or operated separately . 3. The up jarring section takes use of hydraulic mechanism,the jarring force can be adjusted according to up elevating load but can not exceed the max.load for tool load rated . 4.The down jarring section takes use of mechanical friction mechanism, the jarring force is well preadjusted by adjusting device before put into downhole.No re-adjustment can be allowed after jar is put into downhole.
DERUN mechanical drilling jar is a full mechanical drilling jar, it also can be use as fishing tool. It generates upward jarring as well as downward jarring which can solve tight pull or sticking troubles during drilling. It is the first optional drilling jar for vertical well, deep well, directional well and complicated well operations
