Schlumberger Technology Corporation

Joseph K Flowers

Terry L McCafferty

Rod W Shampine

Matthew E Wilson

Jean-Louis Pessin

Larry Dale Welch

Sarmad Adnan

John R Whitsitt

Gokturk Tunc

Lawrence James Leising

L Michael McKee

Michael Hayes Kenison

Nitin Y Vaidya

Rashmi Bhavsar

Vishal Saheta

Michael L Smith

William D Eatwell

Robin Mallalieu

Xiaohong Ren

Frederick Lemme

Jeffrey Beckel

A swellable packer device upon exposure to brine in a well. The device may be swellable to a substantially constant profile in spite of significant fluctuations in brine concentrations. Thus, the likelihood of packer failure due to under-swelling or over-swelling is reduced. Indeed, the packer may be employed for long-term operations or isolations ranging from a couple of weeks to twenty years or more without undue concern over packer failure from under or over swelling.

Swellable downhole device of substantially constant profile

An apparatus for engaging with an outside diameter of a tubular comprises a device body having an internal surface that defines an internal diameter in a first position and allowing the tubular to pass therethrough and an actuator operable to move the internal surface of the device body from the first position to a second position, the second position defining an internal diameter less than the first position internal diameter. The internal surface of the device body is sized with a predetermined grip length for engaging with the outside diameter of the tubular. The grip length is determined by a function of the outside diameter of the tubular and the coefficient of friction between of the outside diameter of the tubular and the interior surface of the device body and the device body is operable to engage with a tubular having a predetermined range of outside diameters.

Apparatus and method for engaging a tubular

A method of deploying a tool into a pressurized well is provided that includes providing the well with a wellhead having a blow out preventer coupled thereto; setting a pressure barrier within the well at a distance below the blow out preventer that is at least as long as the length of the tool to create a pressure chamber between the blow out preventer and the pressure barrier; and opening the blow out preventer to allow for conveyance of the tool into the pressure chamber.

Riserless deployment system

A method and apparatus for controlling inflation and deflation of spaced inflatable packer elements of a straddle stimulation tool within a well casing of a well. A straddle stimulation tool is positioned by tubing at a desired location within the well casing. Fluid is pumped through the tubing and tool at a rate inflating the spaced inflatable packer elements within the well casing and establishing an annulus interval. The inflation control retains pressure within the inflated packer elements and permits the flow of stimulation fluid into the annulus interval for stimulation of the formation. After completion of well stimulation, the packer element pressure control is moved to a packer equalizing position by tension applied via the tubing to equalize packer pressure with casing annulus pressure, deflating the packer elements and permitting conveyance of the straddle stimulation tool within the well casing by the tubing string.

Inflate control system for inflatable straddle stimulation tool

Trailer mounted coiled tubing rig

A system is disclosed for communication from an instrument disposed in a wellbore. The system includes a flow diverter selectively operable to conduct fluid flow between a first path along the interior of a housing and a second path along the interior of the housing. The system includes an initiator operatively coupled to the flow diverter to cause selective operation thereof in response to an event.

Downhole fluid pressure signal generation and transmission

A trailer (,) has a dropped center section (,) defining a well (,) for a coiled tubing reel (,). A mast (,) has a pair of posts (,) on which a carriage (,) is mounted for movement along posts (,). An injector head (,) is supported on carriage (,) for pivotal movement in a vertical plane relative to mast (,) and for horizontal movement along a tubular support member (,) of carriage (,) relative to mast (,). Mast (,) is pivotally mounted on the rear end of trailer (,) for movement away from trailer (,) for positioning over a wellhead. In a stored position, mast posts (,) fit alongside the ends of reel (,) so that to the total height of the stored coiled tubing rig is no more than 13&frac12; feet for over the road travel.

A levelwind system for a coiled tubing reel (,) including an arcuate guide arm (,) extending over the upper surface of the reel (,). A universal joint (,) mounts the lower end of the arm (,) for pivotal movement both vertically and horizontally. A guide member (,) is supported on the free end of the guide arm (,) for guiding the coiled tubing T on and off reel (,). A lift cylinder (,) is effective to raise and lower guide arm (,). A balancing cylinder (,) is effective for moving guide arm ME (,) laterally. A hydraulic fluid circuit responsive to a position sensor (,) and a microprocessor (,) as shown in FIG.,is effective for controlling the movement of the coiled tubing guide arm (,).

Levelwind system for coiled tubing reel

Roadway trailer for coiled tubing reel

Trailer for a coiled tubing reel

Growing community of inventors

Houston, TX, United States of America

Joseph K Flowers