HOUSTON– Weatherford International plc has introduced the ISO Extreme retrievable well barrier, which is qualified to ISO 14310 V0 standards for gas-tight isolation.
The barrier has a large operational envelope: it is capable of withstanding pressure differentials up to 10,000 psi (68.95 MPa) and temperatures between 40 and 325°F (4 and 163°C), which reduces the loss-of-containment risk in extreme environments. The well barriers are available for tubing sizes from 3.5 through 7 in., and can be deployed in electric line, slickline, tubing, and coiled tubing.
The ISO Extreme barrier does not require any nipple profiles and is retrieved by first shifting down to equalize the pressures then jarring up to release. This safety feature, the company says, reduces the risk of trapped pressure below the plug prior to releasing.
Also, the small diameter of the plug enables passage through typical wellbore restrictions for easy deployment and removal even in challenging environments.
Mark Hopmann, vice president of Completions at Weatherford, said: “We are pleased to add the first V0-qualified and field-proven HPHT well barrier to our industry-leading portfolio of wellbore isolation technologies. With this addition, we now have a comprehensive offering of well barriers for diverse applications and environments.”