Darwyn Petras has joined Savoy Capital Management Ltd. as chief operating officer.

Petras was previously regional vice-president of an investment subsidiary of a life-insurance company.

Founded in 2000, Savoy is an employee-owned, Calgary-based investment management firm.

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Richards Oil & Gas Ltd. (TSXV:RIX) has hired John Ho as chief financial officer. He replaces Norman Grill.

Ho, a chartered accountant, has held senior positions with a number of oil and gas companies in Calgary and abroad.

Richards is an oil and gas exploration company based in Calgary that specializes in the exploration and development of coal-bed methane properties.

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Mystique Energy, Inc. (TSXV:MYS) has added Darren Sakundiak to its executive team as manager of operations. He was previously employed with an oil and gas company as a drilling superintendent and brings with him nine years of operations experience in the petroleum industry.

Based in Calgary, Mystique explores and develops petroleum reserves in Western Canada.

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Laurie Henderson has assumed the duties of manager of Canadian operations and engineering for Winstar Resources Ltd. (TSXV:WRL).

Most recently, Henderson was area engineering manager for Paramount Energy Operating Corp.

Based in Calgary, Winstar is a junior oil and gas company that explores for, develops and produces crude oil, natural gas liquids and natural gas in Alberta, Tunisia and Hungary.

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Great Plains Exploration Inc. of Calgary (TSX: GPX) has made a change to its management team. John Ostrom is the new VP of exploration. Ostrom joined Great Plains as chief geologist as a result of the takeover of Rock Creek Resources in July.

His appointment follows the resignation of Carlos Salas as VP of exploration.

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