Well construction & integrity
CAPEX effective, life of well solutions
Since 2009, well integrity has cost operators over USD 75 billion and this has provided the impetus for the industry to focus on and rework, international standards on well integrity management.
SCP is caused by gas migration from a high-pressured subsurface formation through the leaking cement sheath in one of the well’s casing annuli.
At Welltec®, we design and test our WAB® (Welltec Annular Barrier) range in accordance to IS0 14310, the industry standard which defines packer design validation grades.
Our V0* WAB range for cased hole SCP barrier has been tested to IS01410 V0*, the highest validation level within this industry standard, and provides, a verifiable, life of well barrier against sustained casing pressure.
Our V3* WAB range for open hole isolation, has been tested to IS01410 V3*, the highest fluid validation level within this industry standard, and provides, life of well, V3* isolation assurance, standalone within the open hole section, set within cement or used in combination with 2nd stage cement systems to support HP columns of cement, to prevent SCP or production of unwanted gas or water.
*Leak rate criteria
An IOC, had an appraisal well application, in the Norwegian Barents Sea, that required a number of solutions, to allow them to construct and complete...
The steel packer expandable sleeve is expanded between the casing and the borehole by applying pressure in the casing. It conforms to the actual wellbore shape. Primary sealing with the borehole is achieved through a patented series of V3 rated elastomer seals, optimized along the length of the steel sleeve, backed up by a series of metal fins that provide metal to rock contact, and high strength anchoring capability.
