Weatherford introduces V0-qualified retrievable barrier for high-Pressure, high-temperature wellbores 

ISOExtreme02ISO extreme retrievable well barrier. (Image source: Weatherford)Weatherford International has launched ISO extreme retrievable well barrier, which is qualified to ISO 14310 V0 standards for gas-tight isolation and set on electric line, slickline, tubing or coiled tubing (CT) to temporarily isolate the well

According to Weatherford, the barrier has a large operational envelope, aiming to withstanding pressure differentials up to 10,000 psi and temperatures between four and 163°C, which reduces the loss-of-containment risk in extreme environments.

“The variety of deployment options including electric line, slickline, tubing and coiled tubing further increases operational flexibility,” said the company.

The ISO extreme barrier can be used in packer setting and completion installation, contingent plugging of completions with damaged nipples, temporary zonal isolation and plugging, Hanging of completion accessories within the tubing string, temporary well suspension, pressure testing of production tubing and packer setting and wellhead repair and replacement.

Commenting on the barrier, Weatherford said, “Unlike comparable technologies available for the high-pressure, high-temperature (HPHT) market, the ISO extreme barrier does not require any nipple profiles and is retrieved by first shifting down to equalise the pressures then jarring up to release.”

The safety feature focus on reducing the risk of trapped pressure below the plug prior to releasing. In addition, the small diameter of the plug aims to enable passage through typical wellbore restrictions for easy deployment and removal in challenging environments.

Mark Hopmann, vice president of completions at Weatherford, explained, “With this addition, we now have a comprehensive offering of well barriers for diverse applications and environments.”

Weatherford is one of the largest multinational oilfield service companies providing solutions, technology and services to the oil and gas industry. Operating in more than 90 countries, the company provides services including manufacturing, research and development and training facilities.

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