FIELD: oil-and-gas production.
SUBSTANCE: invention related to oil-and-gas production, particularly to wellhead sealing equipment and more precisely to rotating antiemission preventor. Includes rotating pressure control head, fast connection mechanism and changeable sealing element, foreseeable to deform. Head consists of top and bottom chambers. Top chamber includes sealing element and internal shell, which rotates relatively to external one. Sealing element consists of many internal chambers. Those chambers operate sealing element of a drill pipe. It is allowed for sealing element to perform antiemission preventor functions or a blind ram, also fast connection mechanism allow to disconnect upper case from bottom one fast and exchange it on a new upper case.
EFFECT: sealing element strength increase and its shortening, which allow to shorten total assembly height.
19 cl, 21 dwg
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