Subsurface apparatus and method for using same in a hydrocarbon producing well to enable retrieval of a full opening subsurface safety valve mounted in the well tubing without disturbing the major portion of the well tubing located below the safety valve. The apparatus includes a subsurface tubing hanger below the safety valve from which the major portion of the well tubing is suspended and through which tubing the hydrocarbons flow to the surface. Disposed above the safety valve is a tubing hol...

Weighted segments are repositioned during the running of tubulars into a deviated portion of the well. One method of repositioning adds separate weights to the top of a tubular string, runs the separate weight partially "down" the well, removes the weight downhole from the tubular string, and repositions and attaches the weight to an uphole portion of the tubular string prior to continuing the running operation. Another method partially runs a first portion of the tubulars detachably connected t...

A method of expanding a tubular element in a borehole formed in an earth formation is provided. The method includes installing the tubular element at a selected location in the borehole, installing a pulling string in the borehole, the pulling string extending in longitudinal direction through the tubular element and having an upper part connected to a pulling device at surface and a lower part provided with an expander of outer diameter larger than the inner diameter of the tubular element, the...

The end fitting of the present invention is generally hollowly cylindrical in shape and sized so that the outer diameter of the end fitting is slightly larger than the outer diameter of the well screen to which the fitting is to be joined. Bores are formed in the body of the end fitting. The number and placement of bores in the end fitting should be such that the number and placement of bores in the end fitting match the number and placement of longitudinal rods in the well screen. The end fitti...

A method of creating a downhole sealing and hanging device comprising the steps of lowering a first tubular in a well bore, then lowering through the first tubular a second tubular with slightly smaller external diameter than the internal diameter of the first tubular, and made of formable steel, in such a way that the upper section of the second tubular remains within the lower section of the first tubular, and finally plastically expanding at least the upper section of the second tubular by ap...

A method of providing a casing in well from a series of casing sections. The first section is provided from the top of the well and the subsequent sections are arranged progressively downwards therefrom. The subsequent section to be fitted is lowered into the well by a suitable lowering tool, such as a coiled tubing runner. The well fluids which are displaced by the lowering of the subsequent section and the lowering tool, passes from the lower portion of the well up through the internal bore of...

A method of deploying a well screen and associated apparatus provide convenient and economical completion operations within subterranean wells. In a disclosed embodiment, a method of positioning a screen includes attaching the screen to a completion string before stimulation operations are performed on a formation. Initially, the screen is spaced apart from the formation. After the stimulation operations are performed, the screen is positioned opposite the formation and packers are set above and...

An Internal Bottom Hole Assembly (IBHA) for a Coiled Tubing (CT) enables the CT to be used with other devices downhole. The IBHA includes a connector, a valve assembly and an emergency disconnect device, all of which are mounted internally in the CT. The connector couples to the inside of the CT by means of wedges that are urged against the inside wall of the CT. The valve assembly may be mounted either between the connector and the disconnect device or may be on the side of the connector away f...

A protective arrangement or "junk bonnet" (30) for preventing debris entering a downhole tool assembly (14) employed in the drilling of a well. The junk bonnet (30) is in the form of an annular seal which fits around a tube (18) and inside a sleeve (24) which are relatively movable to operate a downhole tool assembly (14) of which they form part. The junk bonnet (30) is provided with sliding fluid seals (42, 44, 48, 50) which seal against the external surface (19) of the tube (18), and against t...

A tool connector is provided for downhole use in oil and gas fields. The tool connector includes a stinger and a stinger receptacle. The stinger is adapted to be stabbed into the stinger receptacle. A loaded engaging member movable between a running position before the stinger is stabbed into the stinger receptacle and a latched position when the stinger is stabbed into the stinger receptacle to latch the stinger and the stinger receptacle together. A release member retains the loaded engaging m...