Oil States MCS Limited has been involved in the offshore structural construction industry since its incorporation in 1979 when it was known as BUE Hydra-Lok Ltd. Subsequent owners of the company, through North Sea Assets PLC and Hunting Oilfield Services (International) Ltd. led to its acquisition in May 1996 by Oil States Industries Inc. of Arlington, Texas, U.S.A.

During this period the company has progressed extensively in the services and products it provides. From the early '80's when the only service provided was that of the Hydra-Lok^® pile swage connection facility for small subsea structures, enhancement, development and partnerships have resulted in the company expanding within the construction industry and entering the maintenance, repair and decommissioning sectors of the industry.

Construction now includes Hydra-Lok^® pile-to-structure connections for subsea structures and jackets secured by means of large diameter piles and the Hydra-Lok Lite^® system for connection of lightweight subsea structures. Allied with the Latch-Lok Levelling System which has been in operation since 1991 a complete levelling and connection package can be offered to the installation contractor. Taking this one stage further Oil States MCS Limited can also enhance the available installation package by supplying Hydra-Lok^® sleeves and Latch-Lok latch rings for integration into the structure.

Oil States MCS Limited moved into the decommissioning and maintenance markets in 1996, firstly, with the operation of the Houston developed Abrasive Cutting system for platform removal, and secondly the adaptation of the Hydra-Lok^® Swaging System to repair corroded and damaged caissons on offshore installations.

Furthermore the Abrasive Cutting system has been adapted and developed for use in the fields of repair and maintenance both onshore and offshore, and the Hydra-Lok^® Swaging system has been developed for downhole pressure testing and casing repairs.