Drill Stem Testing Hydraulic Jar Big John Jar For Cased Hole 5" x 15000psi

The hydraulic jar is a safety tool used when a packer or guns become stuck, the hydraulic jar provide an upward shock to help pull them loose—without tripping. To deliver repeated jarring as needed, the jar tool automatically resets through the application of string weight on the packer.

The hydraulic delay of the jar allows energy to be stored in the string. At the end of the stroke, the restriction is removed causing the mandrel to move rapidly upward.

Features and Benefits

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

• Rig time is reduced.

• Jar can be re-cocked rapidly.

• Jar time delay is adjustable.

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

Specification of Bridge Plug

ZZ TOP Oil Tools Co., Ltd located in XI’AN City in China, is in full service on design, production and supply of oilfield downhole tools and Wellhead Equipment from 2010.

In 2012, we jointed with Yancheng Jingcheng Petrolem and establish the brand JCWellhead, majored in design and manufacture of wellhead equipment, surface well testing equipment and well control equipment. YCJC is a registered supplier for CNPC, GWDC, CCDC in China to provide all kinds of oilfield wellhead equipment.

In 2016, we rebuilt the factory for downhole tools under the brand Techcore oil Tools, and expand the R&D capacity and production capacity of drill stem testing tools, coiled tubing tools, wireline tools etc.

Over more than 10 years, we become a fast growing organization, now our two sub-factories, equipped with CNC lathes, Miller, deep-hole drilling &boring machine and other advanced machines, have enough production capacity to meet the customers’ requirement. And we build a professional & strong team including technical, sales, logistic and leading management department, which make our company success of manufacturing and providing cost-effective downhole tools and create added value for customers around the world.

Our featured products includes following service:

*Downhole Oil Tools

- Drill stem testing tools (APR tools):

Full Bore Retrievable Packer, CHAMP Packer, HPHT Packer, RTTS Circulating Valve,

Rupture Disc Circulating Valve, RD Safety Circulating Valve, RTTS Safety Joint, OMNI Valve, Multi-cycle Circulating valve, Downhole Tester Valve, Select Tester Valve, LPR N-Tester Valve, Mechanical Tester Valve, Tubing Tester Valve, Super Safety Valve, BOP Safety Valve, Sleeve Type Drain Valve, Rupture Disc Sampler etc.

- Coiled Tubing Tools

Connector, Check Valve, Motor Head, Rotating Wash Tools, Surface Knuckle joint,

Slip Slide Type Clamp, Centralizer etc.

- Perforating tools

Perforator, Perforating Gun System, Perforating Shaped Charge Case.

- Wireline Tool String: Rope Socket- Pear Drop, Rope Socket-Disc&Spring Type, Rope Socket- Slip Type, Swivel Joint, Heavy Duty Swivel Joint, Stem-Standard, Stem-Tungsten,Stem-Lead Filled, Stem- Tungsten Filled, Stem-Roller, Accelerator, Link Jar, Tubular Jar, Spring Jar, Hydraulic Jar, Knuckle Jar, Breech Lock Quick Joint, BDK Heavy Duty Q.R.J, Wireline Knuckle Quick Joint, Crossover, Wireline Knuckle Joint, Heavy Duty Knuckle Joint, Spring Centralizer, Fluted Centralizer, Roller Centralizer

* Wellhead Equipment

- Wellhead valves:

Gate Valves, Plug Valves, Choke Valves, Check Valves, Mud Valves and various wellhead valve parts etc.

- Wellhead Manifold:

Choke and Kill Manifold, Drilling Floor Manifold, Fracturing manifold, Well Testing Manifold.

- Wellhead Equipment: Wellhead Christmas Tree / X-Tree, Casing Head, Casing Hanger, Tubing Head,Tubing Hanger, Casing Spool, Tubing Spool, Drilling Spool etc.

- Wellhead Adapter: Spacer Spool / Riser Spool ,Flange Adapter, Union Flange, Double Studded Adapter Flange, Welded Neck Flange, Blind Flange,Companion Flange, Instrument Flange,

Wellhead Clamp & Hub etc.

- Wellhead Integral Fittings: Hammer Union, Elbow, Swivel Joint, Block Cross, Block Tee, Straight Pipe, Pipe Loops etc.

- Well Control Equipment:

Annular BOP, RAM BOP, Sucker Rod BOP, BOP Stack, Wireline BOP etc

- Surface Well Testing Package:

Surface Test Tree (Flowhead), Surface Safety Valve(SSV), ESD System, Data Header, Choke Manifold, Oil Diverter manifolds, Gas Diverter Manifold

Now our tools are supplied to worldwide and enjoy the good reputation.We focus on providing the our clients with highly efficient & expertized service and approach each enquiry with meticulous attention to technical specifications and insist on “Traceability, Serialization” for each tools and related parts.