Abstract: A specialized coupling device and method for connecting a rigid coupling terminal to specialized composite tubing having a semi-rigid outer tubing combined with an expandable flexible inner tubing with fluid pressure integrity, in a manner which combines fluid pressure integrity with vertical and horizontal load support capability. The end portion of the outer shell of the composite tubing is tapered, with a short portion of the inner tubing extending beyond the taper, both being compatible with the interior of the coupling terminal, together with one or more o-rings positioned within the coupling terminal and around the exposed end of the inner tubing, in combination with an adhesive. An optional interior retaining collet may be inserted from the terminal end within the composite tubing, positioned within the interior circumference of the composite tubing.

Abstract: A sucker rod lifting apparatus (10) for use with downhole rotary oil well pumps having a pump rotor (42) disposed within a pump stator (44) comprises at least one hydraulic cylinder (16) between a first carrier plate (14) and the ground, a fluid circuit (82, 84) connected to the hydraulic cylinder (16) to raise and lower the first carrier plate (14) with respect to the ground, and a control valve (76) in the fluid circuit to selectively control the flow of fluid. Thus, the control valve (76) is capable of selectively controlling the raising and lowering of the first carrier plate (14) with respect to the ground to thereby selectively raise and lower the sucker rod (40) and the pump rotor (42) with respect to the pump stator (44).