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Failure of Oil Well Drill Casing

During a routine hydrotest of a section of high strength steel drill casing in an oil well, the hydrotest plug separated from the casing causing a personal injury. APTECH performed an in-depth failure analysis of the casing pipe. This involved making detailed dimensional measurements of the thread region, strength measurements, chemical analyses, and metallurgical evaluations of a crack in the threaded region of the pipe. APTECH provided expert opinion regarding the relative contribution of the features which caused the failure.

Satish Almaula		Plant failure and root cause analysis; process and design engineering analysis; process technology development and testing; plant engineering, operations, maintenance and safety management; plant and process control system management.

Michael Cronin, P.E.		Stress analysis, design evaluation, engineering mechanics

Eric Sullivan, P.E.		Metallurgy, welding, failure analysis, fire and explosion investigations, equipment, piping.

Kimble Clark, Ph.D.		Failure analysis, heat transfer & thermodynamics, process plant equipment failures & explosions, fuel science, combustion, industrial fires and explosions.

Geoffrey Egan, Ph.D.		Engineering mechanics, welding engineering, stress and fatigue analysis, risk analysis, nondestructive examination, project management.