John E. Oliver Jr.
Engineering at Woerner Rd, Houston, TX

4588445, May 13, 1986

Jul 24, 1984

6/633797

John E. Oliver - Houston TX
Arnold M. Singer - Houston TX

B08B 900, E21B 2100, 134, 134, 134, 134, 134, 166, 252

134 2214

Eliminating drilling mud and other solids from surface equipment of a well system (e. g. offshore platform) which is to receive solids-free completion and packer fluids having an affinity to entrain residual solids. These solids are mechanically removed (where possibly by scrapers, squeeging, etc. ), and then the surface equipment is washed with water to carry the solids to a convenient disposal. Clean water is placed into the surface equipment and added to it are a surfactant and alcohol to produce a treated water. The treated water is circulated at turbulent (high shear) flowing conditions through the surface equipment. The treated water with entrained solids is removed to a suitable disposal by displacement with clean water whereby the surface equipment is sufficiently free of solids to avoid contamination of completion or packer fluids introduced thereinto.

4515699, May 7, 1985

Dec 17, 1982

6/450519

John E. Oliver - Houston TX
Arnold M. Singer - Houston TX

E21B 4300, C09K 702

252 855R

A process for removing contaminating solids from high density, salt type aqueous drilling/completion/packer fluid prior to its introduction into a well bore. A small effective (e. g. , 0. 5% volume) of an aliphatic alcohol, 2-ethyl hexanol, and a surface active chemical aid, the amide reaction product of a fatty monobasic acid (oleic) with a secondary amine diethanolamine are thoroughly intermixed into the fluid. After the solids agglomerate, the solids are separated from the fluid before introduction in a solids-free condition into the well bore. The fluid may have a density as high as 19 pounds per gallon and be a brine formed of the sodium, calcium or zinc salts with chloride or bromide anions.

4453598, Jun 12, 1984

Sep 20, 1982

6/420140

Arnold M. Singer - Houston TX
John E. Oliver - Houston TX

E21B 3700

166312

An improved displacement process for eliminating drilling mud (solids and oil) from a well system prior to introduction of solids-free completion and packer brine. Clean water is circulated in the well system to remove and carry the major portion of the drilling mud. A treated water is prepared from a surfactant and alcohol admixed in clean water. Without interrupting circulation, the treated water displaces the clean water carrying drilling mud from the well system. Circulation of the treated water continues in the well system in which the brine is to be received until substantially all of the drilling mud is carried in the circulating treated water. Again without interrupting circulation, the treated water is displaced from the well system to a suitable disposal region with solids-free clean water. Lastly, the solids-free clean water is displaced from the well system with the solids-free brine. RELATED PATENT APPLICATION Chemically Cleaning Drilling/Completion/Packer Brines; Ser. No.

4890643, Jan 2, 1990

Feb 6, 1989

7/306692

John P. Oliver - Houston TX

Mogas Industries, Inc. - Houston TX

F16K 2500

13761411

There is disclosed a bi-directional sealing valve having a pair of ball type closure members mounted in the flowway through the body of the valve, one to control flow in one direction and the other to control flow in the opposite direction.

4651973, Mar 24, 1987

Aug 13, 1984

6/639938

John P. Oliver - Houston TX

F16K 3316, F16K 3150

251267

There is disclosed a gate valve having a cast body which is of sufficiently low height that the upper end of the gate remains partially within a cavity in the bonnet connected to the body as it moves between opened and closed positions. Guide surfaces are formed in the open end of the bonnet cavity for guiding the side edges of the gate as it is so moved. The stem is of a non-rising type having a ring mounted for rotation without reciprocation between upper and lower axial thrust bearings in the bonnet and connected to a one-piece stem by means of a pin which is adapted to shear in response to a predictable axial load on the stem.

4911409, Mar 27, 1990

Jul 10, 1989

7/377424

John P. Oliver - Houston TX
Thomas F. Bright - Conroe TX

Mogas Industries, Inc. - Houston TX

F16K 506

251185

There is disclosed a ball valve which includes a ball closure rotatably mounted within a cavity formed in a main portion of the valve body and spring pressed against a seat ring on one side of the ball closure, and an end portion of the valve body which is removably connected to the main portion to close an opening from the end of the cavity through which the ball closure, seat ring and spring may be removed.

3977707, Aug 31, 1976

Jan 20, 1975

5/542294

John P. Oliver - Houston TX

Cameron Iron Works, Inc. - Houston TX

F16L 2704

285265

A ball joint having tubular end members connected by a gimbal ring for pivoting without relative axial rotation, and pressure balanced sleeves extending between the end members within the gimbal ring to provide a fluid-tight flowway through the joint.