SUBSURFACE WELL APPARATUS HAVING FLEXING MEANS AND METHOD OF USING SAME

摘要

SUBSURFACE WELL APPARATUS HAVING FLEXING MEANS AND METHOD OF USING SAME A surface-controlled subsurface safety valve apparatus and method of utilizing the safety valve in through-the-flowline serviced wells. Both the valve frame and valve operator are provided with ball and socket universal joints to enable passage of the safety valve past restrictions in the flowline resulting from bends and curves in the flowline by flexing the safety valve in moving to and from the subsurface operating location.