Xtreme Coil Drilling Corp. has announced the appointment of Rodney Uchytil to the newly created position of president of Xtreme Coil, effective May 1.

Olympic Seismic Ltd., a wholly owned subsidiary of Seitel, Inc., is the leading provider of 2D and 3D seismic data and custom 3D surveys to the Oil and Gas Industry.

Consultant specializing in geology-based clastic exploration and development, with own log access and mapping software.

Calgary, April 21, 2008 - Steve Sinclair-Smith, Chief Operating Officer of Divestco Inc. is pleased to announce that Bradley Dick has joined the company in the position of Director, Data Services.

WELL PLANNERS: Atlantic Directional is continuing to grow and is now searching for an experienced Well Planner for our Calgary Office.

Olympic Seismic Ltd., a wholly owned subsidiary of Seitel, Inc., is the leading provider of 2D and 3D seismic data and custom 3D surveys to the Oil and Gas Industry.

Triton Energy Corp. has announced two additions to its management team: Robert Pinckston, P.Geol. and Frank Raffin, P.Geoph.

Husky Energy Inc. has announced the appointment of Alister Cowan as vice president & chief financial officer of Husky Oil Operations Limited effective April 28.

Petro-Reef Resources Ltd. advises that Larry Ness has joined its management team as vice president engineering as of April 21.

BlackWatch Energy Services Trust advises that Robert Copeland, who has served as chief operating officer of the trust, has tendered his resignation to pursue other opportunities.

NuVista Energy Ltd. advises that Patrick Miles, vice president, exploration, has decided to resign from his position at NuVista in order to pursue personal interests outside of the oil and gas industry. Miles has been directly involved in NuVista's exploration and development program since its inception in July 2003. He will remain with NuVista over the next few months in order to provide a smooth transition.

Edmonton-based Canadian Advanced Inc. (CAI) announced the appointment of Leo Mangano as president and chief executive officer, effective April 1.

Royal Dutch Shell plc has announced the appointment, effective May 1, 2008, of Mark Quartermain as president of its wholly-owned natural gas and power marketing and trading subsidiaries, Shell Energy North America (US), L.P. and Shell Energy North America (Canada) Inc. (Shell Energy North America) and certain of its other subsidiaries and affiliates, and head of UK-based Shell Energy Trading Limited's leadership team.

Olympic Seismic Ltd., a wholly owned subsidiary of Seitel, Inc., is the leading provider of 2D and 3D seismic data and custom 3D surveys to the Oil and Gas Industry.

Arcis Corporation provides a unique complement of Seismic solutions to the energy sector. We are a private company, profitable and focused on growth.

Marksmen Resources Ltd. advises that John McIntyre has been appointment to the position of chief financial officer of the company effective immediately.