Star Oil Tools Inc. Patent applications |
Patent application number | Title | Published |
20100329900 | Pump for Pumping Fluids - A pump is disclosed which has a housing with a upper end and a lower end. A conduit is defined through the housing between the upper and the lower ends. The pump includes an impeller within the housing, an inlet from the conduit to the impeller and an outlet from the impeller. Portions of the impeller may be distributed around the conduit. The pump may also include a motor coupled to the impeller. Portions of motor may also be distributed around the conduit. The outlet from the impeller may be independent of the conduit. | 12-30-2010 |
20090114400 | Downhole resettable clutch swivel - A top sub for connection to a production well tubing string is movable between an engaged position and a disengaged position relative to a mandrel. The engaged position allows an anchor to be set in a well casing by rotating the tubing string. Tension can be applied to the tubing string to move the top sub to the disengaged position, allowing the tubing string to be rotated without rotating the mandrel. The anchor can be moved to a different position, without pulling the tubing string to the surface, by removing tension from the tubing string to move the top sub from the disengaged position to the engaged position, rotating the tubing string in an opposite direction to release the anchor, and resetting the anchor by again rotating the tubing string. Embodiments in which a sealed internal volume of the swivel remains constant are also disclosed. | 05-07-2009 |
20090095466 | Downhole Force Generator - A well tool for applying a pulling or a pushing force to an object in an interior of a well bore comprising: a) an inner member comprising a first elongated member, a second elongated member and an actuation means axially interconnecting the first elongated member and the second elongated member; b) an outer elongated member longitudinally moveably engaged with the inner member; c) a first seal defined between the first elongated member and the outer elongated member, d) a second seal defined between the second elongated member and the outer elongated member; e) a first piston area defined at a first end portion of the outer elongated member between an outer diameter of the outer elongated member and a sealed outer diameter of the first elongated member, f) a second piston area defined at a second end portion of the outer elongated member between the outer diameter of the outer elongated member and a sealed outer diameter of the second elongated member, and g) a sealed chamber defined between the first seal and the second seal, the sealed chamber including a fluid at a fluid pressure; wherein operation of the actuation means axially reversibly moves the outer elongated member relative the inner member while the fluid pressure remains constant; and wherein the first piston area and the second piston area are substantially equal and external pressure acting on these two piston areas, generates two opposing forces substantially balanced during relative movement. | 04-16-2009 |