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With headquarters in Calgary, Alberta, Ensign is an industry leader in the delivery of oilfield services. Since its inception in 1987, Ensign has accumulated an extensive equipment fleet characterized by flexibility and mobility for meeting the challenging demands of the oil and natural gas industry. We also have contributed to advancements in drilling and well servicing through the innovative use of technology, and have an established reputation for the highest safety standards and environmental stewardship.
We are committed to the integration of HSE objectives into our management systems at all levels. This will enhance our business success by reducing risk and adding value to our services.
Subsidiaries
The following table sets forth the principal operating subsidiaries of the Company, the percentage of shares owned, directly or indirectly, by the Company and the jurisdiction of incorporation or continuance of the subsidiaries as of December 31, 2005.
| Name of Subsidiary | Jurisdiction of Incorporation or Continuance |
Percentage of shares beneficially owned or controlled by the Company |
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| Arctic Ensign Drilling Ltd. | Northwest Territories | 49% |
| Big Sky Drilling Inc. | Alberta | 100% |
| Champion Drilling Inc. | Alberta | 100% |
| Encore Coring & Drilling Inc. | Alberta | 100% |
| Ensign de Venezuela C.A. (formerly Servicios Petroleros Flint, C.A.) |
Venezuela | 100% |
| Ensign del Ecuador C.A. (formerly Flintco del Ecuador C.A.) |
Ecuador | 100% |
| Ensign Drilling Inc. | Alberta | 100% |
| Ensign Energy Services International Limited (formerly Oil Drilling & Exploration Limited) |
Australia | 100% |
| Ensign United States Drilling Inc. (formerly Caza Drilling Inc.) |
Colorado | 100% |
| Ensign United States Drilling (California) Inc. (formerly Caza Drilling (California) Inc.) |
California | 100% |
| Ensign Well Services Inc. (formerly Action Oil Field Services, Inc.) |
Colorado | 100% |
| Gwich’in Ensign Oilfield Services Inc. | Northwest Territories | 49% |
| Hi-Calibre Industries Ltd. | Alberta | 100% |
| Opsco Energy Industries Ltd. | Alberta | 100% |
| Opsco Energy Industries (USA) Ltd. | Montana | 100% |
| Rockwell Servicing Inc. | Alberta | 100% |
| Tri-City Drilling Inc. | Alberta | 100% |
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Recent Acquisitions
| November 2005 | Acquired in the United States: Action Oil Field Services, Inc. which operates eight well servicing rigs in Colorado, from
Petro-Canada Resources (USA) Inc. |
| October 2005 | Acquired in Canada: three coring/mineral rigs from Midnight Sun Drilling Co. Ltd. |
| April 2005 | Acquired Internationally: three drilling rigs in Libya. |
| January 2005 | Acquired Internationally: Servicios Petroleros Flint, C.A. and Flintco del Ecuador C.A., which operates 11 drilling rigs
and one workover rig in Venezuela and two workover rigs in Ecuador, from Flint South America, Inc.| |
| October 2004 | Acquired in Canada: 11 camps and associated catering assets from Slave Lake Rentals & Contracting Ltd. |
| January 2004 | Acquired in Canada and the United States: 23 specialty coring/drilling rigs from Layne Christensen Canada Limited. |
| December 2003 | Acquired in Canada: 11 well servicing rigs from Crown Well Servicing Ltd. |
| November 2003 | Acquired in Canada: Big Sky Drilling Ltd. (and its affiliated companies), which owns and operates eight drilling rigs based
in Oxbow, Saskatchewan. |
| January 2003 | Acquired in Canada: the oilfield rental assets of Canadian Select Energy West, located in Whitecourt, Alberta. |
