Expandable Tubular Solutions


Two challenges facing operators as the energy industry moves into the next century are accessing of new reservoirs that currently cannot be reached economically and maintaining profitable production from older fields. Recent advances in one of the oldest and most fundamental areas of exploration and production, namely tubular technology, will play a key role in meeting these challenges. A method has been developed whereby the diameter of solid tubulars can be expanded downhole. This paper will describe the process and how this significant technological breakthrough provides cost-effective solutions to several tubular problems that have loomed as obstacles to comprehensive reservoir exploitation. In deepwater and subsalt environments such as the Gulf of Mexico, the ability to expand casing and tubing in-situ enables hole-size maintenance and conservation of internal tubular diameter for increased efficiency. Hence, operators are less likely to run out of hole diameter before evaluating all pay zones. Operators can now use smaller holes to drill deeper vertical wells or to extend the reach of deviated wells to access untapped reservoirs. In older fields, existing wellbores can be retrofitted with expanded tubulars for repair purposes or to increase strength and integrity. In the latter case, deeper high-pressure objectives can be supported, and thus, new in-fill wells can possibly be reduced in number or even eliminated. In addition to a description of the process employed to expand solid tubulars, the paper will present applications of expandable tubular technology and results of large-scale testing that has been conducted in support of the applications. Potential commercial applications are also presented.


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Document Type
Technical Paper
Date Published
Thursday, September 30, 1999
Africa, Algeria, Congo, Egypt, Gabon, Libya, Nigeria, Asia-Pacific, Australia, Brunei, China, India, Indonesia, Malaysia, Vietnam, Europe, Denmark, England, Netherlands, North Sea, Norway, Middle East, Azerbaijan, Baku, Dubai, India, Iraq, Israel, Kurdistan, Kuwait, Oman, Qatar, Saudi Arabia, UAE, Latin America, Brazil, Argentina, Trinidad Tobago, Mexico, Venezuela, North America, USA, AK, AL, AR, CA, CO, GOM, KS, LA, MS, MT, ND, NM, OH, OK, PA, TX, UT, WV, WY, Canada, Alberta, British Columbia

Additional Document Information

Land, Shelf, Deep-water
System Type:
ESET, SJ10, OHL, OH Clad, MonoSET OHC, ESeal, ESeal HP Patch, ESeal HP Liner, ESeal Flex, ESeal Liner, ESeal Patch, MonoSET, MAXfrac liner, Flexclad, CHL
Values Added:
Mitigate risk, Enable planned completion, Reduce well cost, Restore production, Maximize ID and TD, Maximize production, Extended well life, Access new reserves, Evaluation enhancement, New reservoirs reached, Environmental impact reduction, NPT reduced, Maximize Recoverable reserves, Reach planned TD, Avoid replacement well/sidetrack