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A landing nipple and safety system for installation in wells having a submersible pump for pumping well fluids to the surface plus a subsurface safety valve for maintaining the well under control during installation and removal of the pump from the well. The subsurface safety valve is hydraulically

A landing nipple and safety system for installation in wells having a submersible pump for pumping well fluids to the surface plus a subsurface safety valve for maintaining the well under control during installation and removal of the pump from the well. The subsurface safety valve is hydraulically actuated by the discharge pressure of the pump. The landing nipple on which the pump is mounted and in which the safety valve is installed can be retrieved from the flow conductor by conventional wireline techniques.

대표청구항 ▼

A well completion having a submersible pump with an intake and a discharge disposed within a well flow conductor comprising: a. well packer means for forming a fluid seal with the interior of the well flow conductor at a downhole location to direct fluid flow to the pump intake; b. a landing nipple

A well completion having a submersible pump with an intake and a discharge disposed within a well flow conductor comprising: a. well packer means for forming a fluid seal with the interior of the well flow conductor at a downhole location to direct fluid flow to the pump intake; b. a landing nipple releasably secured to the upper portion of the well packer means; c. a longitudinal passageway extending through the landing nipple; d. a safety valve releasably secured within the longitudinal passageway for controlling fluid flow therethrough; e. means for attaching the submersible pump to the landing nipple above the safety valve; f. the longitudinal passageway providing a portion of the means for directing fluid flow to the pump intake; g. means for communicating pump discharge pressure to the hydraulically actuated means; h. means for transmitting torque from the submersible pump through the landing nipple to the well packer means whereby the submersible pump is prevented from rotating with respect to the flow conductor; and i. a travel joint positioned between the submersible pump and the means for attaching the submersible pump to the landing nipple.