Abstract: A subsurface safety valve and method for sealing an annulus within a tubular, including a valve housing having a first section having a hollow cylinder for receiving a piston, the hollow cylinder having a first portion, a second portion and a first circumferential ledge; a piston positioned within the hollow cylinder, the piston having a first end, a second end, a first radially extending circumferential land positioned therebetween, and a first reservoir for receiving a first fluid; a biasing element to assist in placing the valve in a sealed condition, the biasing element positioned between the first circumferential ledge of the hollow cylinder and the first radially extending circumferential land; and a flexible sealing member for selectively sealing the annular space when a hydraulic force is exerted thereupon.

Abstract: A zonal isolation apparatus for an open-hole wellbore completed with a gravel pack having sections of blank pipe intermediate selected sections of sand screen, comprising a blank liner, with a first packer and second packer disposed therein. The first and second packers are set adjacent to sections of blank pipe and seal an annular area formed between the blank liner and the surrounding sections of sand screen at the first and second sections of blank pipe. The flow of fluids into the wellbore intermediate the first and second sections of blank pipe is inhibited.

Abstract: Bidirectional flow control device for attachment to a tubular member including a nozzle insert comprising a first sealable surface, the nozzle insert comprising a nozzle passage, and a second sealable surface for mating with the first sealable surface, and a first biasing member seat; a cover plate positioned adjacent the first end of the nozzle insert, the cover plate comprising a production orifice and a plurality of stimulation orifices in fluid communication with a plurality of stimulation passages, the cover plate further comprising a second biasing member seat and a biasing member positioned between the first biasing member seat and the second biasing member seat, the biasing member to exert a biasing force to place first sealable surface and second sealable surface in sealing engagement when internal tubular pressure is below a set-point value.

Abstract: A subsurface safety valve and method for sealing an annulus within a tubular, including a valve housing having a first section having a hollow cylinder for receiving a piston, the hollow cylinder having a first portion, a second portion and a first circumferential ledge; a piston positioned within the hollow cylinder, the piston having a first end, a second end, a first radially extending circumferential land positioned therebetween, and a first reservoir for receiving a first fluid; a biasing element to assist in placing the valve in a sealed condition, the biasing element positioned between the first circumferential ledge of the hollow cylinder and the first radially extending circumferential land; and a flexible sealing member for selectively sealing the annular space when a hydraulic force is exerted thereupon.

Abstract: Bidirectional flow control device for attachment to a tubular member including a nozzle insert comprising a first sealable surface, the nozzle insert comprising a nozzle passage, and a second sealable surface for mating with the first sealable surface, and a first biasing member seat; a cover plate positioned adjacent the first end of the nozzle insert, the cover plate comprising a production orifice and a plurality of stimulation orifices in fluid communication with a plurality of stimulation passages, the cover plate further comprising a second biasing member seat and a biasing member positioned between the first biasing member seat and the second biasing member seat, the biasing member to exert a biasing force to place first sealable surface and second sealable surface in sealing engagement when internal tubular pressure is below a set-point value.

Abstract: A zonal isolation apparatus for an open-hole wellbore completed with a gravel pack having sections of blank pipe intermediate selected sections of sand screen, comprising a blank liner, with a first packer and second packer disposed therein. The first and second packers are set adjacent to sections of blank pipe and seal an annular area formed between the blank liner and the surrounding sections of sand screen at the first and second sections of blank pipe. The flow of fluids into the wellbore intermediate the first and second sections of blank pipe is inhibited.