Richard Gerke

US Patent:

53754590, Dec 27, 1994

Filed:

Dec 13, 1993

Appl. No.:

8/166191

Inventors:

Richard Gerke - Charlotte NC
Jose M. Rodriguez - Fort Mill SC
John J. Palmer - Monroe NC

Assignee:

Henkel Corporation - Plymouth Meeting PA

International Classification:

G01N 1300

US Classification:

73 6011

Abstract:

An apparatus and method is provided wherein the foam inhibiting effectiveness of defoaming and antifoaming additives on various types of foamable liquid mediums is measured. A single generally cylindrical foam cell having openings at both ends is provided wherein an interchangeable foam cell insert having varied geometry is longitudinally disposed within the foam cell. The foam cell insert is provided with a plurality of centralizer walls extending into the foam cell with an agitator member being carried by the centralizer walls. Foamable liquid medium is introduced into the foam cell and recirculated therethrough to form a dynamic fluid-flow system. As the liquid medium passes through both the foam cell and the foam cell insert, it comes into contact with the agitator member carried by the centralizer walls of the foam cell insert forming foam which accumulates in the foam cell. After a sufficient amount of foam is formed, a defoaming or antifoaming agent is introduced into the foam cell, and its effect on the level of foam present in the foam cell is measured. The interchangeable foam cell inserts are of varying lengths and carry varyingly configured agitator members, so that depending on whether a high or low foaming liquid medium is introduced, an appropriate foam cell insert may be chosen and inserted into the foam cell.

US Patent:

51217953, Jun 16, 1992

Filed:

Jan 8, 1991

Appl. No.:

7/638718

Inventors:

David P. Ewert - Bakersfield CA
D. P. Kundert - Casper WY
Jeffrey A. Dahl - Duncan OK
E. Dwyann Dalrymple - Duncan OK
Richard R. Gerke - Charlotte NC

Assignee:

Halliburton Company - Duncan OK

International Classification:

E21B 33138

US Classification:

166292

Abstract:

This invention relates to a method of terminating the undesirable flow of fluid through a gravel pack in a wellbore, or from a highly permeable portion of or fracture in a subterranean formation into a wellbore, which method involves the use of a hydraulic cement consisting of discrete particles having a particle size not greater than about 30 microns. The cement, which is utilized in either a slurry of water or hydrocarbon liquid, has a low density, good thixotropic properties and, in one embodiment, expansive characteristics.

US Patent:

51274736, Jul 7, 1992

Filed:

Jan 8, 1991

Appl. No.:

7/638717

Inventors:

Kirk L. Harris - Duncan OK
Edward F. Vinson - Duncan OK
Daniel L. Bour - Duncan OK
David P. Ewert - Bakersfield CA
Richard R. Gerke - Charlotte NC

Assignee:

Halliburton Services - Duncan OK

International Classification:

E21B 3313

US Classification:

166277

Abstract:

This invention relates to a method of repairing holes, channels, voids and microannuli in a cement sheath situated in the annular space between a casing and the wall of a wellbore penetrating a subterranean earth formation, which method involves the use of a hydraulic cement consisting of discrete particles having a particle size not greater than about 30 microns. The cement, which is utilized in a water slurry, has a low density, good thixotropic properties and, in one embodiment, expansive characteristics.