Weatherford/lamb, Inc.

Bj Services Company

Bj Services Company, U.s.a.

Adrian V Saran

Jason Charles Mailand

Winfield M Sides

Cecil G McGavern, Iii

Thomas G Hill, Jr

Robert C Henschel, Jr

Glenn A Bahr

Lonnie Christopher West

Win Sides

Mario Robles

Presented is a subsurface safety valve in which the flapper mount, hard seat and spring housing have been integrated into a single assembly. To accommodate a 'soft seat insert,' a special retainer soft seat ring and soft seat seal are provided. The soft seat seal fits over a conical protruding surface (hard seat) that surrounds the main bore of the safety valve on the bottom side of the spring housing. The retainer ring fits over the soft seat seal and holds it in place against the conical surface. Notches along the perimeter of an upper flanged end of the soft seat seal prevent gases, such as nitrogen, from becoming trapped behind the seal and potentially damaging it during a rapid decompression event. A gap between the upper flanged end of the soft seat seal and the lower spring housing allow the seal to move up and down the conical protruding surface as the flapper opens and closes, reducing compression of the seal and the risk of a compression set due to repeated opening and closing of the flapper.

Method and apparatus for retaining a soft seal in an integrated flapper mount, hard seat, spring housing surface controlled subsurface safety valve

Bypass assemblyincludes stingerreceived by receptacle boreof tubular receiverattached to tube. Bypass pathwayconnects stinger port(s) (') to slip hangersupported hydraulic conduitto bypass the tube. Tubecan be a subsurface safety valve or hydraulic nipple anchored within production tubing. Bypass assemblyincludes upperand lowerhydraulic nipples in production tubing, with respective tubular anchor seal assemblies () engaged therein. Bypass pathwayconnects hydraulic conduitto slip hangersupported hydraulic conduitto bypass tubular anchor seal assemblies (). Bypass assemblyincludes upperand lowerhydraulic nipples in production tubing, with respective tubular anchor seal assemblies () engaged therein. Bypass passageconnects stingerto slip hangersupported hydraulic conduitto bypass tubular anchor seal assemblies ().

Wireline slip hanging bypass assembly and method

The present invention is directed to a method and apparatus for providing a pathway for fluid communication through a tubing-retrievable subsurface safety valve (TRSSV). The method and apparatus are designed to be deployed within a hydrocarbon wellbore after the TRSSV has failed. The apparatus is a milling tool that is run into the wellbore and landed within the TRSSV. The milling tool comprises a housing system, a cutting system, a drive system, and an actuating system. In operation, the milling tool is landed within the housing of the TRSSV. Thereafter, the actuating system is initiated. The actuating system actuates the drive system, which in turn drives the cutting system. In one arrangement, the cutting system includes blades for shaving the pressure containing body of the TRSSV, thereby forming a pathway for fluid communication between a hydraulic fluid line and a bore of the safety valve.

Downhole milling machine and method of use

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Kingwood, TX, United States of America

Adrian V Saran