Cased Hole Full Bore Retrievable Safety Joint for Drill Stem Testing

Introudction of Safety Joint

The Retrievable safety joint is an optional emergency backoff equipment in oil & gas well testing operation and TCP operation. If the packer becomes stuck during operations, the safety joint releases the workstring and tools above the packer. To initiate release of the safety joint, a tension sleeve must be parted by pulling on the tubing. However, this action alone is not sufficient to release the joint but must be followed by application of vertical and rotational movement for complete release of the safety joint.

Working principle and structure features.

A mandrel in the safety joint is held inoperative by a tension sleeve to help prevent premature releasing of the joint. To release the safety joint in an emergency, the tension sleeve must be parted before the joint can be operated. When the tension sleeve has been parted by pulling on the tubing, the safety joint may be completely release by holding right hand torque on the tubing while working it up and down.

4 1/2”-5”, 5 1/2” RTTS safety joint can unhitch upon two rotations of the tubing. One revolution needs two strokes. 7″RTTS Safety Joint require two strokes and 9 5/8” need three. It is about twelve revolutions for complete release of the7” and 9 5/8” RTTS safety joint.

Technical parameter of 5 1/2" RTTS Safety Joint

About ZZ TOP OIL TOOLS - TECHCORE

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.

ZZ TOP Oil Tools can also support client with One-Stop Procurement Service and flexible payment term under short or long term financing service. We always believe that the success of our company is directly related to our strict quality control and professional service. From the raw material booking till finished products, the inspector will be appointed to supervise the whole processing. We always provide clients with innovative solutions, quality materials and timely delivery.

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. 

DST Tools Warehouse