All Days 2008
DOI: 10.2118/118101-ms
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Injection Wells with Integrity Challenges on the NCS

Abstract: The indications of several well integrity failures on the Norwegian Continental Shelf (NCS) was the motivation for a study to investigate the possible involved mechanism of well integrity issues on the NCS. The study will include water injectors, gas injectors and CO2 injectors. This paper describes a number of technical well integrity issues, identifying critical elements such as design failures, corrosion problems, tubing leakage, operational factors and degradation of barrier elements like… Show more

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Cited by 8 publications
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“…With the development of deepwater drilling technology, wellbore integrity is increasingly under scrutiny. According to the survey of wellbore integrity conducted by Norwegian Petroleum Safety Authority (PSA) on 106 offshore wells with different development years and production categories, 18% of them had problems with wellbore integrity, and 7% of them were forced to close wells because of wellbore integrity, which caused significant environmental and economic losses. , In the process of deep-well testing and production, the high-temperature (HT) flow produced in the deepwater wells will cause additional pressure in casing annulus. If the axial force generated by excessive temperature change is greater than the bearing capacity of the shear pin at the wellhead, the wellhead will move up and seriously threaten wellbore integrity. In Marlin oilfield in the Gulf of Mexico, excessive annular pressure during oil production resulted in the deformation and fracture of the casing and tubing of well A-2 few hours after production .…”
Section: Introductionmentioning
confidence: 99%
“…With the development of deepwater drilling technology, wellbore integrity is increasingly under scrutiny. According to the survey of wellbore integrity conducted by Norwegian Petroleum Safety Authority (PSA) on 106 offshore wells with different development years and production categories, 18% of them had problems with wellbore integrity, and 7% of them were forced to close wells because of wellbore integrity, which caused significant environmental and economic losses. , In the process of deep-well testing and production, the high-temperature (HT) flow produced in the deepwater wells will cause additional pressure in casing annulus. If the axial force generated by excessive temperature change is greater than the bearing capacity of the shear pin at the wellhead, the wellhead will move up and seriously threaten wellbore integrity. In Marlin oilfield in the Gulf of Mexico, excessive annular pressure during oil production resulted in the deformation and fracture of the casing and tubing of well A-2 few hours after production .…”
Section: Introductionmentioning
confidence: 99%