11
Joe C Danos, Arlen R Schmalz: Tubing-conveyed gravel packing tool and method. Union Oil Company of California, William O Jacobson, Gregory F Wirzbicki, January 23, 2001: US06176307 (65 worldwide citation)

After installing an inventive tool attached to production tubing in a well, the well can be gravel packed without the use of a well intervention unit. The tool isolates a productive interval and diverts tubing-conveyed sand slurry towards an annular location by means of a port and an openable passag ...


12
Mark D Mueller, Frank Jones, Julio Quintana, Kenneth E Ruddy, Michael Mims: Well casing flotation device and method. Union Oil Company of California, Gregory F Wirzbicki, William O Jacobson, January 22, 1991: US04986361 (64 worldwide citation)

A ported float shoe and a landing collar are attached at one end of a casing string and a sliding air trapping insert attached by shear pins at the other end. The air trapping insert includes a fluid flow passageway blocked by a plug attached by shear pins to the insert. The air trapping insert and ...


13
William M Neill, Fred Aminzadeh, A M Sam Sarem, Julio M Quintana: Guided oscillatory well path drilling by seismic imaging. Union Oil Company of California, Gregory F Wirzbicki, William O Jacobson, September 7, 1993: US05242025 (57 worldwide citation)

Real-time monitoring of a target production zone is followed by an oscillatory drilling path to create a borehole having improved zone drainage capability. Real-time monitoring uses geophones placed in adjacent wells or the well being drilled. The drilling process itself generates the seismic signal ...


14
David Lush, Jonathan Eng, Hikmet Ucok, Dave Hopgood, Chris Landeck, Ken Carmon: Subsea riser separator system. Union Oil Company of California, Yale S Finkle, Gregory P Wirzbicki, William O Jacobson, November 25, 2003: US06651745 (50 worldwide citation)

A preferred embodiment of the inventive fluid delivery system comprises a vertical liquid/vapor separator and riser assembly that comprises a multi-phase separator inlet, a vapor outlet and riser, and a liquid outlet port connected to a hydraulically-driven centrifugal pump. By controlling the opera ...


15
Michael A Cain: Downwell isolator. Union Oil Company of California, Gregory F Wirzbicki, William O Jacobson, September 8, 1998: US05803178 (43 worldwide citation)

A slidably sealing isolator and method for using the isolator in a wellbore tubular to control the injection and production of fluids to individual formation zones, the isolator having 1) a sliding band seal which does not need to be actuated or set in order to restrict fluid flow into a wellbore zo ...


16
Julio M Quintana: Pressure assisted running of tubulars. Union Oil Company of California, Gregory F Wirzbicki, William O Jacobson, May 17, 1994: US05311954 (41 worldwide citation)

A pressure actuated, telescoping subassembly is supported by a pipe string to axially move an attached member within a wellbore. Increasing fluid pressure to the subassembly actuates a telescoping action, axially moving the attached member but not the supporting pipe string. Motion can be used durin ...


17
David Keller, Darrell L Kramer: Seismic semblance/discontinuity method. Union Oil Company of California, Gregory F Wirzbicki, William O Jacobson, October 31, 2000: US06141622 (34 worldwide citation)

A semblance attribute to more reliably detect a seismic discontinuity is provided. The semblance attribute of the center point of a seismic volume is calculated from 3D traces within a spatial and time window. The seismic attribute is dependent, at least in part, on the ratio of the square of the su ...


18
Rui Lin: Pulsed and gated multi-mode microspectrophotometry device and method. Union Oil Company of California, Gregory F Wirzbicki, William O Jacobson, October 12, 1993: US05252834 (31 worldwide citation)

A short pulse of laser excitation and a synchronized gating time control of a fluorescence spectrograph detector are combined with a microscope, precise focusing and delivery optics, multi-mode illumination means, cooling, and temperature controls to form a new microspectrophotometry system. The gat ...


19
Michael G Mims, Mark D Mueller, Frank L Jones, Michael J Bunyak: Oil tool release joint. Union Oil Company of California, Gregory F Wirzbicki, William O Jacobson, February 11, 1992: US05086843 (31 worldwide citation)

An oil tool release joint with a top sub that has a pin end which inserts into an opening in a bottom sub provides an alternative remote tool for separating pipe string segments after rotation. The subs are held together by shear pins which are wedged through holes in the bottom sub into recesses in ...


20
Eddie E Dore, Frank L Jones, Danny R Williamson: Compatible fluid gravel packing method. Union Oil Company of California, William O Jacobson, Gregory F Wirzbicki, December 20, 1994: US05373899 (25 worldwide citation)

The invention controls a well during completion by first running a sealable well completion tool and string downhole from the surface and isolating a productive interval near an oil or gas formation from the remainder of the wellbore. The drilling or other fluid in the interval is displaced from the ...