Bobby F Goad

US Patent:

44795440, Oct 30, 1984

Filed:

Mar 2, 1983

Appl. No.:

6/471399

Inventors:

Rudy B. Callihan - San Antonio TX
Bobby F. Goad - San Antonio TX
Gary A. Miller - San Antonio TX

Assignee:

Baker Oil Tools, Inc. - Orange CA

International Classification:

E21B 3313

US Classification:

166290

Abstract:

Mechanism for achieving the radial expansion of an annular elastomeric pack-off unit between the bore of a casing and the exterior of a liner, comprises a tubular sealing assembly threadably connected between the liner and the hanger and defining two inwardly projecting annular seals, an annular fluid pressure chamber, and radially disposed fluid inlet ports for the fluid pressure chamber located between the two inwardly projecting annular seals. An annular piston mounted in the annular pressure chamber effects the compressible expansion of an annular elastomeric seal element. A tubing extension of the work string is provided which may be selectively moved into sealing relationship with either or both of the internally projecting annular seals. During the cementing operation, the tubing extension engages both annular seals. After cementing, the tubing extension may be elevated by the work string to disengage from the lowermost one of the internally projecting annular seals and permit fluid pressure to be applied through the radial ports to the actuating piston.

US Patent:

43939317, Jul 19, 1983

Filed:

Apr 27, 1981

Appl. No.:

6/257839

Inventors:

John F. Muse - San Antonio TX
Rudy B. Callihan - San Antonio TX
Bobby F. Goad - San Antonio TX
Clyde S. Wainwright - McQueeney TX

Assignee:

Baker International Corporation - Orange CA

International Classification:

E21B 1910

US Classification:

166208

Abstract:

The disclosure relates to an improved apparatus for effecting the cementing of a liner at the bottom of a well bore. The liner sleeve assembly is inserted into the well bore on a hanger which is detachably connected to a running tool, which, in turn is connected to the work string by a torque transmitting expansion joint. The running tool may be fluid pressure actuated to set the hanger. In the event of failure of the fluid pressure setting operation, the hanger may be mechanically set by rotation of the work string transmitted to the running tool by the torque transmitting expansion joint.

US Patent:

40983358, Jul 4, 1978

Filed:

Mar 24, 1977

Appl. No.:

5/780603

Inventors:

Bobby F. Goad - Spring TX

Assignee:

Baker International Corp. - Orange CA

International Classification:

E21B 2306
E21B 33122

US Classification:

166120

Abstract:

A hanger for supporting dual tubing strings in a well casing from hanger mandrels which can swivel to facilitate threadedly connecting each mandrel to its associated tubing string. The hanger includes an orienting sleeve for receiving safety shut-off valves, the sleeve being adapted to swivel with respect to the rest of the hanger, making it easier to assemble the hanger onto the running and setting tool used for setting the hanger in the casing. The running and setting tool is releasably secured to the hanger. By imposing fluid pressure on the setting tool, the tubing hanger slips are expanded against the casing. Before the running and setting tool is released from the hanger and retrieved from the well casing, wire line retrievable blanking plugs can be set in the tubing string below the hanger, one plug being inserted in place in one tubing string before the hanger is lowered in the casing, and the other plug lowered through the running tool and hanger to its associated landing nipple in the other tubing string, to maintain the well under control after the running and setting tool is released from the hanger and retrieved at the top of the well bore in which the casing is confined.

US Patent:

40518949, Oct 4, 1977

Filed:

Jul 12, 1976

Appl. No.:

5/704125

Inventors:

Bobby F. Goad - Spring TX

Assignee:

Baker International Corporation - Orange CA

International Classification:

E21B 712

US Classification:

166 73

Abstract:

Apparatus for adjusting the distance between a lower tubing hanger anchored in a well casing to support a depending lower tubing string, and an upper tubing hanger at the well head, in which an adjustable spacer device has its lower end connected to the lower tubing hanger and its upper end to the lower end of a safety valve connected to an upper tubing string extending to the upper tubing anchor, the valve being controlled hydraulically by fluid under pressure imparted through a control line strapped, or otherwise secured, to the upper tubing string and extending from the top of the well to the safety valve. The upper tubing string, safety valve and control line, as well as the upper portion of the spacer, are rotatable as a unit with respect to the lower portion of the spacer to lower the unit relative to the lower tubing hanger until the upper tubing hanger lands on its well head seat, such action occurring without twisting the control tubing relative to the safety valve.

US Patent:

46243119, Nov 25, 1986

Filed:

Sep 26, 1985

Appl. No.:

6/780447

Inventors:

Bobby F. Goad - San Antonio TX

Assignee:

Baker Oil Tools, Inc. - Orange CA

International Classification:

E21B 2302

US Classification:

166125

Abstract:

A running tool for a hydraulically set packer, hanger, or the like, having expandable slip elements held in a retracted position by an actuating sleeve during run-in, employs an annular piston to hold the actuating sleeve in a fixed locked position relative to the tubular body portion of the running tool, thus preventing inadvertent setting of the tool due to impacts received during the run-in of the tool. When the slips are positioned at their desired location in the well, an increase in fluid pressure applied to the tubular body portion of the running tool will effect an upward movement of the annular piston, shearing a shear screw which has held the piston during the run-in operation, releasing a positive lock engaged with the slip actuating sleeve, and effecting upward movement of the actuating sleeve to release the slips. A contractible ring is also moved by the piston and effects the locking of the actuating sleeve in an upward position after the slips are released, thus eliminating the possibility of the slips being unset by inadvertent downward movement of the actuating sleeve.