CNOOC outlines procedures for ERD program

Liuhua Oil Field - Conclusion Extended-reach drilling (ERD) technology was used in the Liuhua 11-1 deepwater oil field to integrate development with preexisting facilities. Adhering to the procedures outlined in this article allowed successful completion of several horizontal wells and reversed the rapid production decline. ERD describes wells with a measured depth at least twice as long as the vertical depth, represented by a VS/TVD ratio greater than 2.The introduction to this project was published last week (OGJ, Aug. 1, 2005, p. 35). It reviewed the background of the Liuhua field in South China Sea Block 24/09 and discusses the extended-reach well design and rationale used by China...

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