井架服务（英国）有限責任公司（英文：Derrick Services (UK) Limited；简称：DSL）
DSL is an API licensed drilling structure specialist. With international offices supporting the upstream industry worldwide, our in-house resources ensure we provide customers with turnkey solutions to meet requirements from design and engineering through to site work, inspections and completion, both safely and efficiently. Accreditations held API 4F & 8C, ISO 9001:2000, API Q1, IRATA & OPITO.
Website：www.derricksl.com