Kenneth V Mcdowell

US Patent:

58425314, Dec 1, 1998

Filed:

Apr 16, 1997

Appl. No.:

8/839782

Inventors:

Kenneth O. McDowell - DeSoto TX

Assignee:

Dresser Industries, Inc. - Dallas TX

International Classification:

E21B 1022

US Classification:

175372

Abstract:

A rotary rock bit is formed as a rock bit body, a bearing shaft supported by the rock bit body, a rotary cutter adapted to be rotatably mounted on the bearing shaft, and at least one bearing that promotes rotation between the rotary cutter and the bearing shaft. Each bearing includes a bearing element having a steel matrix with steel-free volumes distributed therethrough. The matrix is a hypoeutectoid steel having more than about 0. 40 weight percent carbon. An anti-galling alloy resides within the steel-free volumes of the steel matrix. The anti-galling alloy is a silver-copper alloy having a composition of from about 60 weight percent to about 95 weight percent silver, balance copper.

US Patent:

44026170, Sep 6, 1983

Filed:

May 12, 1981

Appl. No.:

6/262731

Inventors:

Kenneth O. McDowell - De Soto TX

Assignee:

Dresser Industries, Inc. - Dallas TX

International Classification:

F16C 3312

US Classification:

384 95

Abstract:

A rotary rock bit having a relatively thin-walled porous journal bushing, infiltrated with an anti-galling metal, is shown. The bushing is mounted within the rolling cone cutter and retained axially by abutments and rotationally by an interference fit in conjunction with a metallic conformal layer at the interferingly engaging surfaces to prevent movement of the bushing with respect to the cutter under bit operating conditions.

US Patent:

57947260, Aug 18, 1998

Filed:

Apr 24, 1996

Appl. No.:

8/637169

Inventors:

Kenneth O. McDowell - DeSoto TX

Assignee:

Dresser Indistries - Dallas TX

International Classification:

E21B 1022

US Classification:

175371

Abstract:

A rotary rock bit is formed as a rock bit body, a bearing shaft supported by the rock bit body, a rotary cutter adapted to be rotatably mounted on the bearing shaft, and at least one bearing that promotes rotation between the rotary cutter and the bearing shaft. Each bearing includes a bearing element having a steel matrix with steel-free volumes distributed therethrough. The matrix is a hypoeutectoid steel having more than about 0. 40 weight percent carbon. An anti-galling alloy resides within the steel-free volumes of the steel matrix. The anti-galling alloy is a silver-copper alloy having a composition of from about 85 weight percent to about 95 weight percent silver, balance copper.

US Patent:

56616970, Aug 26, 1997

Filed:

Dec 18, 1995

Appl. No.:

8/574209

Inventors:

Herbert W. Swan - Richardson TX
Kenneth O. McDowell - Midland TX
James A. Specht - Plano TX

Assignee:

Atlantic Richfield Company - Los Angeles CA

International Classification:

G01V 136
G01V 134

US Classification:

367 47

Abstract:

A method and apparatus for analyzing amplitude-versus-offset (AVO) seismic data to distinguish sand formations, such as Morrow sands, from limestones and other similar intervals, is disclosed. For each of the traces in the survey, AVO intercept and AVO slope traces are generated, preferably after normalization of the amplitudes of the traces to account for geophone coupling variations. After normalization and conventional processing and corrections, spatial summation may be performed to further improve the traces. AVO trend lines are then generated, preferably on a weighted window basis, to generate localized trend lines against which the intercept and slope values of individual depth points may be compared. This comparison allows the plotting of AVO intercept versus AVO slope deviation from the trend line, from which sand formation interfaces may be identified by their presence in certain quadrants of the intercept-slope deviation cross-plot.