Leroy I Ellis

US Patent:

7124030, Oct 17, 2006

Filed:

May 14, 2004

Appl. No.:

10/845743

Inventors:

Leroy Ellis - Richardson TX, US

International Classification:

G01V 9/00

US Classification:

702 9, 702 13

Abstract:

A method of interpreting mud gas samples in a drilling operation of a target area. The method starts with obtaining a plurality of mud gas samples at a plurality of incremental depths of the target area. The plurality of mud gas samples are analyzed to find various isotopic data at each depth. The isotopic data of the mud gas samples are plotting on several charts to provide a visual representation of the isotopic data trends. The charts may include: depth versus ethane/methane; depth versus δC per mil; and depth versus δC and gas show. In addition, the percentage methane versus δC is provided on a separate chart. This percentage methane versus δC chart provides engineering and geological information such as the location of lithological hydrocarbon seals, barriers, and zones of good hydrocarbon communication (e. g. , compartments). This engineering and geological information is then correlated with the other charts.

US Patent:

7174254, Feb 6, 2007

Filed:

Sep 28, 2004

Appl. No.:

10/952136

Inventors:

Leroy Ellis - Richardson TX, US

International Classification:

G01V 9/00

US Classification:

702 9, 702 13

Abstract:

The present invention is a method of interpreting sampled mud gas compositional and isotopic data from a target area in a drilling operation. The compositional and isotopic data is plotted on a chart. The chart preferably illustrates methane compositional data together with isotopic composition, such as δC. From this chart, mixing lines are determined. The mixing lines are determined by finding data points plotted on the chart which approximate a straight line or other trend. The mixing lines are then analyzed to determine reservoir isotopic signature, hydrocarbon communication and any interference to this communication within the target area.

US Patent:

7529626, May 5, 2009

Filed:

Feb 5, 2007

Appl. No.:

11/671043

Inventors:

Leroy Ellis - Richardson TX, US

International Classification:

G01V 1/40

US Classification:

702 9

Abstract:

A method of displaying well log isotopic information in a drilling operation of a target area. The method begins by profiling a plurality of mud gas samples through a well bore at a plurality of incremental depths of the well bore. The plurality of gas samples are analyzed to obtain a plurality of isotopic data points associated with hydrocarbon isotopic composition of the plurality of gas samples. The plurality of isotopic data points includes data associated with a composition of ethane and methane within each of the mud gas samples. The plurality of isotopic data points are plotted to determine geological information from the target area derived from the plotted plurality of isotopic data points. The plurality of isotopic data points is analyzed to geochemically interpret the geological information. The interpretation is then displayed with data from a mudlog and geophysical log.

US Patent:

20080147326, Jun 19, 2008

Filed:

Oct 31, 2007

Appl. No.:

11/931207

Inventors:

Leroy Ellis - Richardson TX, US

International Classification:

G01V 9/00

US Classification:

702 9

Abstract:

A system and method of interpreting well log isotopic information in a drilling operation of a target area. The method begins by inputting a template for indicating a trend from analyzed mud gas samplings into a computing system. Next, a plurality of mud gas samplings are profiled through a well bore at a plurality of incremental depths of the well bore. The plurality of gas samplings are analyzed to obtain a plurality of isotopic data points associated with hydrocarbon isotopic composition of the plurality of gas samplings. The plurality of isotopic data points includes data associated with a composition of ethane and methane or other gaseous components within each of the mud gas samplings. A trend associated with the template is determined by the computing system from the plurality of isotopic data points. The plurality of isotopic data points is analyzed to geochemically interpret the geological information.