Techcore Oil Tools Co.,Ltd,
| Supply Ability | 80 sets/month |
| Delivery Time | 35-40 days |
| Packaging Details | Polly wood, suitable for sea and air shipment |
| Application | Drill Stem Testing Tools |
| Type | Safety Tools for Well testing |
| Standard | NACE MR0175 |
| Working Temperature | Max. to 450 oF |
| Working Pressure | 15000psi |
| Working Condition | H2S service above 175oF & Full H2S |
| Tool Size | 5 inch |
| Connection | CAS Box x Pin |
| Brand Name | Techcore |
| Model Number | Big John Jar / Hydraulic Jar |
| Certification | ISO, BV, SGS |
| Place of Origin | CHINA |
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Product Specification
| Supply Ability | 80 sets/month | Delivery Time | 35-40 days |
| Packaging Details | Polly wood, suitable for sea and air shipment | Application | Drill Stem Testing Tools |
| Type | Safety Tools for Well testing | Standard | NACE MR0175 |
| Working Temperature | Max. to 450 oF | Working Pressure | 15000psi |
| Working Condition | H2S service above 175oF & Full H2S | Tool Size | 5 inch |
| Connection | CAS Box x Pin | Brand Name | Techcore |
| Model Number | Big John Jar / Hydraulic Jar | Certification | ISO, BV, SGS |
| Place of Origin | CHINA | ||
| High Light | Gas Well Hydraulic Drilling Jar ，Well Testing Hydraulic Drilling Jar ，15000psi Mechanical Drilling Jar | ||
Hydraulic Jar For Oil & Gas Well Testing Service / Big John Jar
The hydraulic jar is a safety tool used in well testing service, the hydraulic jar as the component of DST tool string is to help removing stuck tools by resisting a pull on the workstring, when the workstring is stretched by the pull, tension in the hydraulic jar is released and an upward impact is delivered to the stuck tool. The pulling strength of 5” x 15000psi Hydraulic Jar is 222.2kN.
Operation of Hydraulic Jar
The temporary resistance of the hydraulic jar that powers the 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.
Technical parameter of Hydraulic Jar
| Specification | 5” |
| O.D. | 127.5mm |
| Bore Diameter | 57mm |
| Length | 1695mm |
| Working pressure | 105Mpa |
| Internal pressure strength | 149Mpa |
| External pressure strength | 138Mpa |
| Tensile strength | 1406KN |
| Torque strength | 22KN.m |
| Service | H2S,NACE MR0175(>175oF) |
| Working temperature | -29oC+204oC |
| Connection thread | 3 7/8CAS. BXP or 3 1/2 IF.BXP |
Drill stem testing tools for cased hole, open hole and slim hole are available as below
RTTS Serires: Full bore retrievable packer, full bore retrievable circulating valve, full bore retrievable safety joint,
Tester Valve: downhole tester valve, select tester valve, LPR- N Valve, Tubing String Tester Valve
Circulating valve: omni circulating valve, multi-cycle circulating valve, RD Circulating valve, RD safety Circulating Valve, Hydraulic Circulating Valve
Other DST string tools: hydraulic jar, vertical shock absorber, radial shock absorber, RD safety circulating valve, high pressure retrievable packer with bypass, CHAMP packer, IPO valve, sleeve type drain valve, rupture disk sampler, super safety valve with control panel, BOP safety valve for downhole operation and so on.
ZZ TOP Oil Tools Service
Strict quality control system
ZZ Top Oil Tools with the sub-factory certified by ISO is expert in design and production of downhole well testing tools. All the manufacture is strictly conformed with ISO system including Quality Control Management, Environmental Management and Occupational Health & Safety Management. For each downhole tools and each parts, we make the trace-ability from the raw material till the products. And any TPI inspection are available with us from SGS/BV/ TUV /DNV etc..
Continuous after sales service
ZZ TOP Oil Tools provides the prompt after-sales service to our customers to guarantee your benefits. For the complete downhole tools, we provide the free training in our factory, and if you need the site instruction, we can appoint our technical engineer to your site for the training.
Welcome to contact us for more information of the downhole tools!
Company Details
Business Type:
Manufacturer,Exporter
Year Established:
2014
Total Annual:
5Million-10Million
Employee Number:
>100
Ecer Certification：
Verified Supplier
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, Coil... 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, Coil...
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