Well Testing Cased Hole Mechanical Packer Full Bore DST Safety Joint 7" 70Mpa

Introudction of Safety Joint

The Retrievable safety joint is the full bore safety join which is applied for the drill stem testing operation in well testing operation, and it is named RTTS afety joint in Halliburton type.

The Retrievable safety joint is an optional emergency backoff equipment. If the packer becomes stuck during operations, the safety joint releases the workstring and tools above the packer.

The tension sleeve of the safety joint must be parted by pulling on the workstring, in order to initiate the release of the safety joint. For complete release, vertical and rotational movement must be applied.

The Retrievable Safety Joint should be run on all special tool and DST jobs directly above the packer. The safety joint is aimed to provide a disconnect point in the DST tool string above the packer, in order to remove all equipment above that point once the work string becomes stuck and the Safety Joint can still be operated.

Operation of the retrievable safety joint

The retrievable safety joint is run immediately above the retrievable packer so that the number of tools above the packer can be removed. Before the safety joint is run in the hole, a tension sleeve located on the bottom of the lug mandrel must first be parted by pulling up on the tool string.

After the tension sleeve has parted, by right-hand torque the safety joint is released while the workstring is rotated a specified number of cycles. 12 cycles will be needed for 7” RTTS safety joint total released. And for 7” RTTS safety joint, it require two strokes per revolution for 7” RTTS safety joint.

Application of the Retrievable Safety Joint

* Cased Hole Drill stem testing Operation

* Tubing - converyed perforating operation - TCP operation

* Well Completion operations

Features and Benefits of the Retrievable Safety Joint

Technical parameter of the retrievable safety joint

Well Testing RTTS Safety Joint Cased Hole Drill Stem Testing Tools 7" - 70Mpa

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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