David Kenneth Crowshaw

Simmons Edeco, Inc. provides oilfield services to an international customer base of major oil companies and large independent producers around the world. It offers onshore drilling, workover and completion services, case-hole wireline and drilling and related equipment manufacturing. The company is headquartered in Calgary, canadqa.

Unity Well Integrity Europe Ltd. provides products and services to the oil & gas industries. Its services include drilling equipment design & manufacture, oil field equipment supply, onshore drilling, oil field tubular services, work over services & wellhead and valve repair. The company was founded in 1931 and is headquartered in Derby, the United Kingdom.