High Safety Hydraulic Drilling Jar 5" 105Mpa Cased Hole Downhole Oil Tools

Introudction of Hydraulic Jar

The hydraulic jar is a safety tool for the drill stem testing operation, The Hydraulic Jar is used to provide an upward shock to helps free a stuck tool by resisting a pull on the workstring , when equipment becomes stuck in the well bore. At the end of the stroke, the restriction is removed causing the mandrel to move rapidly upward, resulting in a sudden impact to help free the stuck tools. If the tools are not free, a downward stroke resets the Hydraulic Jar for the next attempt.

Operation of the Hydraulic Jar

The temporary resistance that powers the hydraulic jar is provided by a hydraulic time-delay system. Resistance is released when the metering sleeve inside the jar moves into a bypass section of the outer case. This action allows the special hydraulic oil to bypass rapidly.

The time delay required to release the temporary resistance varies in relation to the weight of the pull. For example, a light pull requires more time for release than a hard pull. When tools below the jar are stuck, a steady pull applied to the jar creates an upward impact blow to the string. The jar can be re-cocked when the string is set down.

Application of the Hydraulic Jar

* Cased Hole Drill stem testing Operation

* Tubing - converyed perforating operation - TCP operation

* Oil well flow operations

Features and Benefits of Hydraulic Jar

• Design of the hydraulic system ensures long life with little maintenance.

• To reduce the rig time

• Jar can be re-cocked rapidly.

• The hydraulic jars are able to adjust the time delay

• Amount of pull to trip the jar can be varied within the limits of the time-delay system.

Technical parameter of Hydraulic Jar

ZZ Top Oil Tools Co.,Ltd as head office registered in Xi’an City in 2010, and in 2016, ZZ TOP OIL TOOLS enlarged the downhole oil tools factory under the Brand - TECHCORE in Baoji, which engages in designing and manufacturing the downhole oil tools including DST tools, Coiled tubing tools etc.

As one group, ZZ TOP provides the clients highly efficient & expertise service as well as more comprehensive products to meet the customers' requirements during the work, and insists on "Traceability, Serialization" for each tools and related parts

Equipments List

Techcore specialized in design, manufacture and sales of the oil well downhole tools as below:

* Drill stem testing tools for cased hole,  open hole and slim hole:

Retrievable packer, circulating valve,safety joint, downhole tester valve,LPR- N Valve, multi-cycle circulating valve, hydraulic jar, shock absorber, RD safety circulating valve,CHAMP packer, IPO valve, tubing string test valve, drain valve,RD sampler, super safety valve etc.

* Coiled Tubing Tools: Double slip connector, roll on connector, roll on x thread connector, double flapper check valve, motor head, dual function circulating valve, hydraulic jar, fishing tools etc.

* Perforating tools: Various perforator & perforating gun system, Shaped Charge Body

 *Oil well completion tools include: Subsurface safety valve, wireline retrievable subsurface safety valve, single string production packer, dual strings production packer, ESP packer, mechanical set packer, permanent packer, compensation device, bridge plug, sliding sleeve, nipples etc. 

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