دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: The total time from beginning of the accident to the normal situation.

n: A kind of protecting device avoiding the accident that hoisting block collides with crown block due to error or faulty operation in the process of pulling out the hole.

n: a serious accident in which the travel block and hook drop
out of control

n: the total time cost to drill a well, including production time
which is from collaring to well completion(boring、tripping、cementing、logging) and non-production time （for instance maintenance、accident ect）

n: see internal upset end. International Association of Drilling Contractors (IADC) n: an organisation of drilling contractors that sponsors or conducts research on education, accident prevention, drilling technology, and other matters of interest to drilling contractors and their employees. Its official publication is The Drilling Contractor: Address: Box 4287;Houston, TX 77210;(281) 578-7171;fax (281) 578-0589.

n: the inner wall of drilling tube that is thickened.