Continued Evolution of the One-trip Expansion, Single-diameter Wellbore


Finding, developing and exploiting oil and gas reserves hinges on continuous performance improvement, prudent technology applications, ongoing cost structure reductions and capital efficiency. Drilling and completion costs continue to be a major percentage of field development costs. With over 300 commercial installations in place, solid expandable tubular technology has proven to be a viable and economically feasible alternative to conventional drilling technology. This installation legacy, the evolving technology and applications spectrum and the omni-present need to “lower lifting cost and maximize recovery” have provided the impetus for the latest step-change toward the one-trip section, single-diameter wellbore. The whole is greater than the sum of its parts. This truism is evident in the configuration for the latest test that validates individual components and the subsequent subsystem that will ultimately bring the single-diameter well to fruition. In addition to the unique equipment needed to expedite this game-changing technology, new processes, procedures and contingencies had to be developed and tested as well. This paper will explain the overall design and testing approach and implementation essential in realizing the tool components, sub-systems and system necessary for the construction of a single-diameter well. The test program will be detailed as well as the results of the field trial. The paper will conclude with how this test and the resulting base building blocks will be used to fundamentally impact and facilitate changes in the dynamics of well construction.


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Document Type
Technical Paper
Date Published
Sunday, May 1, 2005
North America