Directional CTD advances enable drilling of low-margin wells with minimal environmental impact ///
Operators are always looking for an economical and environmentally sensitive way to access mature oil fields. It is a continuing source of frustration for the industry, because the two proven techniques for increasing reserve recovery—horizontal drilling and underbalanced drilling—are not economically combined with standard, jointed pipe drilling. Plus, the speed advantages of coiled tubing drilling (CTD) cannot be fully exploited, because it doesn’t lend itself to drilling directionally with larger hole sizes.
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