发明名称 Membrane liner for casing head of oil wells and the like and method of use therefore
摘要 A removable drip pan for well heads and the like is disclosed. The drip pan is a membrane mat that is split to fit around the well head equipment. The split is sealed with a strip of VELCRO or similar hook and loop type fastener. The seam seal forms a small berm along a radial line from the center to the outer edge. A small berm is also formed around the circumference of the mat to hold any spilled fluids. Finally, an adjustable large diameter collar is attached to the mat. This collar fits around the equipment and can be pulled snugly around the equipment to form a tight seal by using a split strap adjuster. The device is used by fitting the mat around the well head to be worked, closing the seam seal and cinching the collar into position. The collar is designed to be raised or lowered to match the characteristics of a particular well head and to permit work to be performed on the entire well head assembly by setting the collar height as an appropriate working height. A spill skirt is used to cover the top of the collar and to protect the straps from contamination.
申请公布号 US5477920(A) 申请公布日期 1995.12.26
申请号 US19950410763 申请日期 1995.03.27
申请人 SIMMONS, WAYNE 发明人 SIMMONS, WAYNE
分类号 E21B33/08;(IPC1-7):E21B33/00 主分类号 E21B33/08
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