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15000psi Drill Stem Test Tools

China Techcore Oil Tools Co.,Ltd, certification
China Techcore Oil Tools Co.,Ltd, certification
Customer Reviews
During the DST-TCP operation, the APR tools we purchased worked stable, and we are happy to see the quick response for any technical issure and fast delivery for redress kits

—— Ahmed

We are satisfied with your tools after 5 runs successful operation. We highly appreciate to see the excellent performances in sealing capacity and thanks for the specialist technical support from you

—— Leon

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15000psi Drill Stem Test Tools

15000psi Drill Stem Test Tools
15000psi Drill Stem Test Tools
15000psi Drill Stem Test Tools 15000psi Drill Stem Test Tools 15000psi Drill Stem Test Tools

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Product Details:
Place of Origin: CHINA
Brand Name: Techcore
Certification: ISO, BV, SGS
Model Number: DST - Hydraulic Jar-5"
Payment & Shipping Terms:
Minimum Order Quantity: 1 set
Price: Negotiable
Packaging Details: Polly wood, suitable for sea and air shipment
Delivery Time: 35-40 days
Supply Ability: 80 sets/month

15000psi Drill Stem Test Tools

Application: Drill Stem Testing Operation Type: APR Safety Tools
Standard: NACE MR0175 Working Temperature: Max. To 450 OF
Working Pressure: 15000psi Working Condition: H2S Service Above 175oF
Tool Size: 5 Inch Connection: CAS Box X Pin
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15000psi Drill Stem Test Tools


5 Inch Drill Stem Test Tools


SGS Drill Stem Test Tools

Hydraulic Jar Big John Jar For Cased Hole Drill Stem Testing 5" x 15000psi
Introudction of Hydraulic Jar
The hydraulic jar is the Halliburton Big John Jar, which is used as a safety tool in the well downhole 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 a packer is stuck, you can use bumper to unfreeze the tool and carry on shocking pipe string. When using this bumper, you should exert a pulling power to the pipe string first, and then releasing the pulling power on the bumper so that the drill stem contracts after the drill stem is stretched. 
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. 
Application of the Hydraulic Jar
* Drill stem testing Operation
* Tubing - converyed perforating operation - TCP operation
* Oil well flow operations
Technical parameter of Hydraulic Jar





3 7/8"






Bore Diameter








Working pressure




Internal pressure strength




External pressure strength




Torque strength





H2S,NACE MR0175(>175oF)


Working temperature



Connection thread

3 7/8CAS. BXP or 3 1/2 IF.BX

2 7/8 CAS & 2 7/8 EU


15000psi Drill Stem Test Tools 0

Hydraulic Jar 5" - 105Mpa Cased Hole Drill Stem Testing Tools

ZZ TOP Oil Tools Co., Ltd, headquartered in Xi’an City, focused on the design and production of drill stem testing tools and wellhead equipment since 2010. With the business expanding, ZZ TOP Oil Tools jointed to build the factories for wellhead equipment under the brand " JC Wellhead" and downhole tools under the brand "Techcore".
* "JC Wellhead" was estabilished in 2010 in Yancheng city, specialized in design and manufacturing of the oilfield wellhead equipment conformed with API 6A specification.
* "Techcore Oil Tools" was re-built in 2016 in Baoji city, specialized in design and manufacturing of drill stem testing tools, coiled tubing tools, wireline tools and other downhole tools.
As the whole team, ZZ TOP is always following the principle of “ Customer First” and offers high quality products combined with excellent service, insist on “Trace-ability, Serialization” for each tools and related parts. And as the head office of JC wellhead and Techcore, focuses on marketing ,sales and after-sales, we are based on customer satisfaction.

Contact Details
Techcore Oil Tools Co.,Ltd,

Contact Person: Lee

Tel: +8618161839623

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