51
Houston B Mount II: Method and apparatus for determining cement conditions. Amoco Corporation, Scott H Brown, Fred E Hook, January 31, 1989: US04802145 (22 worldwide citation)

An apparatus and method of use thereof are disclosed herein for determining cement conditions adjacent a casing set within a wellbore. At least one acoustic transmitting and receiving transducer and at least one acoustic receiving transducer are positioned into contact with the interior surface of t ...


52
Kenneth G Nolte, Michael B Smith: Determination of maximum fracture pressure. Standard Oil Company, Scott H Brown, Fred E Hook, July 19, 1983: US04393933 (21 worldwide citation)

During injection of fracture fluid into a subterranean formation, the bottomhole treating pressure at which the change in pressure is essentially zero is determined. This pressure is the maximum which should be attained for that formation during fracture and is useful for designing subsequent fractu ...


53
Grant A Young: Tangentially staged hydrocyclones. Amoco Corporation, Scott H Brown, Fred E Hook, December 8, 1987: US04711720 (21 worldwide citation)

A hydrocyclone separation system is disclosed for separating a liquid mixture into at least two different density components. A central outlet of a primary separation chamber is in fluid communication with a tangential inlet of at least one secondary chamber via a conduit extending therebetween, whe ...


54
Warren J Winters: Downhole device to detect differences in fluid density. Standard Oil Company, Scott H Brown, Fred E Hook, October 25, 1983: US04412130 (20 worldwide citation)

Apparatus for use within a well for indicating the difference in densities between two well fluids. The apparatus is formed within a drill collar with a source of radiation removably disposed in a wall of the drill collar. At least two radiation detectors are located equidistant from the source of r ...


55
Ralph J Bertolacini, Eugene H Hirschberg, Frank S Modica: Process for removing sulfur oxides from a gas. Standard Oil Company, Scott H Brown, William T McClain, William H Magidson, September 20, 1983: US04405443 (20 worldwide citation)

Sulfur oxides are removed from a gas by an absorbent comprising at least one inorganic oxide selected from the group consisting of the oxides of aluminum, magnesium, zinc, titanium, and calcium in association with yttrium or yttrium combined with at least one free or combined rare earth metal select ...


56
Hin Chiu, Donald K Nelsen: Offshore well test platform system. Amoco Corporation, Scott H Brown, Fred E Hook, March 6, 1990: US04906139 (19 worldwide citation)

An offshore well test platform system is positionable above one or more underwater wells and comprises a submerged buoy restrained below the surface of the water by a plurality of laterally extending, tensioned cables, a platform structure removably connected to a submerged buoy with an upper portio ...


57
Stephen H Johnson, Carl J Regone: Methods for attenuation of horizontally traveling seismic waves. Amoco Corporation, Scott H Brown, Fred E Hook, July 19, 1988: US04758998 (19 worldwide citation)

Disclosed is an array of seismic energy receiver elements spaced specifically for attenuation of horizontally traveling seismic waves. In one embodiment, the rows of seismic energy receiver elements are spaced apart a crossline distance d and have a total crossline extent D, and d is less than the v ...


58
Ralph J Bertolacini, Eugene H Hirschberg, Frank S Modica: Catalyst for removing sulfur oxides from a gas. The Standard Oil Company, Scott H Brown, Fred E Hook, September 17, 1985: US04542116 (19 worldwide citation)

Sulfur oxides are removed from a gas by an absorbent comprising at least one inorganic oxide selected from the group consisting of the oxides of aluminum, magnesium, zinc, titanium, and calcium in association with yttrium or yttrium combined with at least one free or combined rare earth metal select ...


59
James N Bostic III, Robert D Carter, Ram G Agarwal, Ronald F Crowell: Pressure transient method of rapidly determining permeability, thickness and skin effect in producing wells. Standard Oil Company, Scott H Brown, Fred E Hook, January 3, 1984: US04423625 (19 worldwide citation)

A method of flow testing a producing formation through a well including lowering into the well a recording pressure and temperature device to measure pressure and temperature as functions of time, then lowering into the well a test chamber closed at the bottom by a surface activated valve. The space ...


60
Chriswell G Hutchens, Steven A Morris: Method for acoustic reverberation removal. Amoco Corporation, Scott H Brown, F E Hook, January 3, 1989: US04796237 (19 worldwide citation)

Disclosed herein are methods for canceling acoustic reverberations caused when acoustic energy impinges a medium. In one method, a series of positive pulses of acoustic energy are transmitted and the amplitudes of the resulting acoustic reverberations are measured. Negative pulses of acoustic energy ...