5" Full bore tension safety joint
Drill stem testing tools

Brief

The Full bore tension safety joint is an optional emergency backoff device. The safety joint releases the workstring and tools above the packer if the packer becomes stuck during operations. The design of the RTTS safety joint makes unintentional operation difficult.

The Full Bore Tension Safety Joint is a two stage disconnect tool which is run above the packer that allows the tubing to be disconnected from the tool string below it should the need arise. The tension safety joint first requires a predetermined tensile load to be applied from surface in order to sever the shear ring assembly which initiates the disconnection. The tensile load required to shear is dependent of specific requirements and ranges from 4,000 to 66,000 pounds (this figure includes the weight of the test string below the tension safety jont). The second stage of disconnection requires right hand torque to be applied to the tubing while simultaneously stroking it vertically approximately nine inches.

Features

• Positive sequence of operation helps prevent premature release.

• Tools above it can be retrieved when string is stuck.

Our facilities
  

Test equipment
    

Test chart of Full bore tension safety joint

ZZ TOP OIL TOOLS is the professional manufacturer for the drill stem testing tools and surface testing equipment. All the DST tools are conformed with NACE MR 0175 with traceability,and the DST tools can be worked in H2S & CO2 above 175 F and full H2S, also with the skilled and experienced engineers, we can design the drill stem testing tools as per customer's well condition. Moreover, we supply the training in our factory and operation instruction at the well site. The DST tools are exported to USA, Colombia, India, Pakistan, Iran, Brazil etc. and enjoy the good reputation from the customers.

To shorten the delivery time, we proceeded the DST Tools in stock:

Packer,circualting valve,select tester valve,APR N-valve,OMNI valve,Hydraulic Jar,Tubing string tester

1. Full bore Packer, 7" Casing, working pressure 70Mpa, Working Temperature 400F, Connection: IF, 4set

2. Tester valve, 5", Working pressure 105Mpa, Working temperature 400F, Connection CAS. BXP, 4 sets

3. Hydraulic Jar,5", Working pressure 105Mpa, Working temperature 400F, Connection CAS. BXP, 4sets

4. Rupture disk Circulating valve, 5", Working pressure 105Mpa, Working temperature 400F, Connection CAS. BXP, 4sets

5. Flowhead (surface test tree), 3 1/16", working pressure 70 Mpa. 1set

Should you have any interest or inquiry on the Drill stem testing tools, contact us freely.