Abstract: A downhole valve for fluid energized packers includes a valve sub and a packer. The valve sub further includes a control tube and a rotatable ball, the control tube having at least one closable aperture fluidly coupled to the packer when open, and the rotatable ball rotatable about an axle having at least one flow path closable by a rotation of the ball. The rotatable ball rotates about an axle coupled to a shift sleeve coupled to the lower end of the control tube. The rotatable ball includes a rotation pin extending from its outer surface and a rotation pin sleeve is adapted to rotate the ball in response to a movement of the ball toward or away from the rotation pin sleeve.

Abstract: A downhole valve for fluid energized packers includes a valve sub and a packer. The valve sub further includes a control tube and a rotatable ball, the control tube having at least one closable aperture fluidly coupled to the packer when open, and the rotatable ball rotatable about an axle having at least one flow path closable by a rotation of the ball. The rotatable ball rotates about an axle coupled to a shift sleeve coupled to the lower end of the control tube. The rotatable ball includes a rotation pin extending from its outer surface and a rotation pin sleeve is adapted to rotate the ball in response to a movement of the ball toward or away from the rotation pin sleeve.

Abstract: A method of designing and the resulting thermally stable heated coating die apparatus, the die apparatus including a die having a die geometry and a heating system with heaters and temperature sensors. The method and resultant apparatus provides minimized temperature gradients, flat die lip faces in a die to roll plane and a flat die in a plane perpendicular to die flat lip faces and parallel to substrate width. The method optimizes simultaneously: die geometry, placement of the heaters, placement of temperature sensors, and shielding from operating conditions, using heat transfer and structural numerical modeling and statistical analysis while considering die functionality characteristics, minimum increment of temperature measurement and control accuracy related to minimum acceptable deviation from flatness, coating die material of construction relative to thermo-structural material properties, and desirable coating die material properties.

Abstract: A die assembly (10) having a first die part (12), which includes a first lip (16) that, in combination with a second lip (18), defines a feed gap (20). The first die part (12) also includes a rear portion (22), a front portion (24), a slot (26) between these portions (22,24), and a gap-setting device (28) that is mechanically movable within the slot (26) so as to enable the movement of the front portion (24) relative to the rear portion (22). The first lip (16) is carried by the front portion (24), whereby movement of the front portion (24) in one direction moves the first lip (16) relative to the second lip (18), thereby adjusting the feed gap (20). The geometries of the slot (26) and the gap-setting device (28) are such that movement in a second opposite direction is limited to a known position, thereby providing a registration position for the front portion (24) of the first die part (12) and thereby providing a registration position for the first lip (16).

Abstract: A die assembly (10) having a first die part (12), which includes a first lip (16) that, in combination with a second lip (18), defines a feed gap (20). The first die part (12) also includes a rear portion (22), a front portion (24), a slot (26) between these portions (22,24), and a gap-setting device (28) that is mechanically movable within the slot (26) so as to enable the movement of the front portion (24) relative to the rear portion (22). The first lip (16) is carried by the front portion (24), whereby movement of the front portion (24) in one direction moves the first lip (16) relative to the second lip (18), thereby adjusting the feed gap (20). The geometries of the slot (26) and the gap-setting device (28) are such that movement in a second opposite direction is limited to a known position, thereby providing a registration position for the front portion (24) of the first die part (12) and thereby providing a registration position for the first lip (16).