How Do You Know If Your Shear Rams Will Actually Work Under Pressure?

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Axis Performs Shear Test of a BOP with SSR Shear Rams under High Pressure for a Major International Oil Company

Axis Energy Services recently approached a longstanding customer, a major international oil company, to provide BOP services for their drill out, workover, and fishing needs. To give this major customer assurance that our shear rams and boosters work under high pressure, we offered that they witness a high-pressure shearing test using our BOP ram shear system.  The goal was to create “real world” scenarios where our BOP systems might be called upon to perform.

The first test was to shear 2 7/8” L-80 6.5# tubing with a .25” stainless steel tube with data cable inside, strapped to the outside of the 2 7/8” tubing at 0 pressure.  The 2 7/8” L-80 pipe with stainless steel tube strapped to the side sheared at 1,159 psi of hydraulic pressure.  Once shear rams sheared the tubing and stainless-steel line, we tested the shear rams at 10,000 psi for 15 minutes and the test was successful.

The second test to be performed was to shear 3 ½” L-80 9.2# tubing with 2 5/8” 110k 4.59” coil inside of the 3 ½” tubing at 0 pressure.  The 3 ½” tubing sheared at 1,639 psi of hydraulic pressure and the 2 5/8” coil sheared at 1,395 psi of hydraulic pressure.  Once the shearing was completed, we tested shear rams at 10,000 psi for 15 minutes and, once again, the test was successful.

We decided next to perform the same test but to shear under pressure, a much more difficult test.  We pressured the BOP to 10,000 psi, closed shear rams and sheared 3 ½” pipe at 14,433 psi on BOP with 2,480 psi of hydraulic pressure, and 2 5/8” coil sheared with 15,146 psi on BOP with 2,441 psi of hydraulic pressure.  The time from throwing handle to closing was 14.4 seconds. Once shear rams were closed, we held a 15-minute test with 13,800 psi on shear rams and the test was successful.

All shear tests were successful, and all shear blind pressure tests were good.

We believe that our SSR shear rams with the large bonnet/boosters meet or exceed the standard shear capabilities against other shear rams in the market as evidenced by our test results.

Our industry is filled with all different scenarios concerning tubing strings that may be run in well bores.  We had the opportunity to do additional shear testing and collect the data on a scenario outside of normal single-tubing shear tests.

For more information on this testing and our full range of BOP and pressure control products, please contact any Axis sales person or Garry Pruitt at Garry.Pruitt@axisofs.com or 903-521-3580.

Slow-motion video of Axis performing a high-pressure shearing test using our BOP ram shear system to create “real world” scenarios where our BOP systems might be called upon to perform. The time from throwing handle to closing was 14.4 seconds.

High Pressure Package in route to the Haynesville Shale.

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