Abstract
The paper is dedicated to reducing risk of possible emergency in operation of blow out prevention equipment. It provides some general information on well blow out prevention equipment, describes materials of the principal elements of a ram-type blowout preventer and graphs reflecting deformation of rubber and polyurethane depending on static loads. It is suggested to replace a rubber seal IRP-1352 with a polyurethane-based seal SKU-7L as exemplified with a blind ram model. Ram strength calculations were performed with the ANSYS Workbench software and provided data on maximum deflection of the lower pipe ramp and equivalent stresses for rubber and polyurethane seals. Suggestions are given for selecting materials for ram blowout preventer seals.
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