Gravity valve for a downhole tool

Details Gravity valve for a downhole tool Gravity valve for a downhole tool

E - Fixed Constructions

21

B

E21B 34/06 (2006.01) F16K 17/12 (2006.01)

Patent

CA 2504297

A gravity valve for a downhole tool for use in a subterranean well is described, as is a method of use thereof. The gravity valve is adapted to control the flow of a downhole fluid through the downhole tool. The gravity valve typically includes a plunger and a seat. The plunger may embody a substantially non-spherical end that is adapted to mate with a complementary receiving end on the seat. The increase surface area of contact between the plunger and the seat acts to improve the seal therebetween, reduce the stresses thereon, and improve the performance of the gravity valve in general. The components of the gravity valve may be constructed of materials, which are selected based on the specific gravity of the materials in comparison with the specific gravity of the downhole fluid for a given application. A method of constructing and utilizing the gravity valve is disclosed.

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