Mark E Willis

US Patent:

20130277139, Oct 24, 2013

Filed:

Apr 23, 2012

Appl. No.:

13/453776

Inventors:

Mark Elliott Willis - Katy TX, US
Erkan Ay - Katy TX, US
Norm Warpinski - Cypress TX, US
Tianrun Chen - Houston TX, US

Assignee:

Halliburton Energy Services, Inc. - Houston TX

International Classification:

G01V 1/40

US Classification:

181106

Abstract:

The present disclosure provides embodiments seismic energy sources configured to generate enhanced shear wave energy in order to more accurately determine the distribution and orientation of fractures in subterranean formations. At least one seismic energy source includes an elongate rod having a first end and a second end, a detonator coupled to the first end, and a bull plug coupled to the second end. An explosive is helically-wrapped about the elongate rod continuously from the first end to the second end and configured to detonate such that a time-delayed detonation is achieved which induces increased shear wave energy in the surrounding formations.

US Patent:

48872440, Dec 12, 1989

Filed:

Jun 28, 1988

Appl. No.:

7/212470

Inventors:

Mark E. Willis - Carrollton TX
Rambabu P. Ranganayaki - Farmers Branch TX
Thomas E. Shirley - Richardson TX
Stan Y. C. Lee - Richardson TX

Assignee:

Mobil Oil Corporation - New York NY

International Classification:

G01V 130

US Classification:

367 73

Abstract:

Method of interpolating additional seismic traces between existing seismic traces obtained during the exploration of a subsurface formation. Seismic traces are recorded upon a datum surface in accordance with standard seismic data acquistion methods. Forward and backward wave equation datuming of the data set at the same velocity estimates new measurements for originally acquired data deemed unsatisfactory by propagating measured seismic traces to a fictitious datum plane using wave theory to create a second set of seismic traces and datuming the second set of seismic traces, again using wave theory, back to the original datum plane to create a third set of seismic traces. The third set of seismic traces will include new seismic traces to be used in place of the originally acquired unsatisfactory data.

US Patent:

46835563, Jul 28, 1987

Filed:

Feb 27, 1985

Appl. No.:

6/706531

Inventors:

Mark E. Willis - Carrollton TX

Assignee:

Mobil Oil Corporation - New York NY

International Classification:

G01V 100

US Classification:

367 27

Abstract:

A well logging tool employing at least one transmitter and at least one receiver is incrementally advanced through a borehole. A plurality of recorded well log traces from successive ones of the incremental depth points for a single transmitter-receiver pair are correlated to identify a moveout trend for the recorded waveforms about the measured arrival time of the waveform on the center trace of such plurality of traces. A second correlation of the center trace of the plurality of traces with the next successive depth trace is carried out in accordance with the identified moveout trend to determine the arrival time of the acoustic waveform on such next successive depth trace with respect to the measured arrival time of the center trace.

US Patent:

46835571, Jul 28, 1987

Filed:

Oct 5, 1984

Appl. No.:

6/657906

Inventors:

Mark E. Willis - Carrollton TX

Assignee:

Mobil Oil Corporation - New York NY

International Classification:

G01V 140

US Classification:

367 57

Abstract:

A borehole logging tool includes at least one acoustic energy transmitter and at least one spaced apart acoustic energy receiver. Acoustic energy signals travel from the transmitter to the receiver directly through the subsurface formation adjacent the borehole and indirectly through reflections from subsurface formation changes below the bottom of the borehole. The difference in travel times of the directly arriving and indirectly arriving signals are determined for like acoustic waveforms as a measure of the depth of the subsurface reflecting formations below the borehole.

US Patent:

20220214468, Jul 7, 2022

Filed:

Jun 11, 2019

Appl. No.:

17/608045

Inventors:

- Houston TX, US
Simon Shaw - Youngsville LA, US
Michel Joseph LeBlanc - Houston TX, US
Mark Elliott Willis - Katy TX, US
Xiang Wu - Singapore, SG

International Classification:

G01V 1/46
G01V 1/22
G01V 1/50
G01V 8/24
G01V 1/52

Abstract:

A wellbore system includes a logging unit having a retrievable logging cable coupled to a downhole tool within a wellbore and a depth correlation unit in the downhole tool that provides current depth data for the wellbore through the retrievable logging cable for recording of a current depth by the logging unit. The wellbore system also includes a distributed acoustic sensing unit that includes a seismic processing unit and a seismic profiling unit connected to a separate optical cable of the retrievable logging cable having distributed acoustic sensing channels, wherein an assignment of the distributed acoustic sensing channels along the separate optical cable is determined by an offset distance between the current depth of a formation reference region within the wellbore and a previous reference depth of the formation reference region within the wellbore. A distributed acoustic sensing method is also included.

US Patent:

20220196861, Jun 23, 2022

Filed:

Dec 23, 2020

Appl. No.:

17/133409

Inventors:

- Houston TX, US
Mark Elliott WILLIS - Katy TX, US

Assignee:

HALLIBURTON ENERGY SERVICES, INC. - Houston TX

International Classification:

G01V 1/28
G01V 1/36

Abstract:

The disclosed technology provides solutions for identifying noise in seismic profile data sets. In some aspects, a process of the disclosed technology includes steps for receiving wellbore data including seismic measurements, processing the wellbore data to generate a seismic input image including visual representations of the one or more seismic measurements, and processing the seismic input image to identify a noise region in the seismic input image. Systems and machine-readable media are also provided.

US Patent:

20230020858, Jan 19, 2023

Filed:

Sep 20, 2019

Appl. No.:

17/620269

Inventors:

- Houston TX, US
Henry Clifford Bland - Calgary, CA
Michel Joseph LeBlanc - Houston TX, US
Mark Elliott Willis - Katy TX, US
Xiang Wu - Singapore, SG

International Classification:

G01V 1/26
G01V 1/46
G01V 1/22
G01D 5/353

Abstract:

An active fiber stretcher assembly can be used for data acquisition systems. A time-break signal can be detected that coincides with a seismic event emitted from a seismic controller. A predetermined waveform can be generated in response to detecting the time-break signal. The predetermined waveform may be encoded onto a fiber optic cable using a fiber stretcher. A data acquisition system connected to the fiber optic cable may detect the predetermined waveform on the fiber optic cable and initiate acquisition operations including: receiving, during the seismic event, light signals returning from a portion of the fiber optic cable in a subterranean environment; determining one or more characteristics of the subterranean environment from the light signals; and storing the one or more characteristics.

US Patent:

20210405231, Dec 30, 2021

Filed:

May 23, 2019

Appl. No.:

16/649802

Inventors:

- Houston TX, US
Mark Elliott Willis - Katy TX, US
Andreas Ellmauthaler - Houston TX, US

International Classification:

G01V 1/22
G01V 1/42

Abstract:

Embodiments disclosed herein include components, devices, systems, and operations and functions for generating a seismic profile. An optical signal is generated in an optical signal medium disposed in proximity to a formation. A seismic source induces seismic signals within the formation. A backscatter response corresponding to the seismic signals from the optical signal medium is detected and quadrature modulated to generate a quadrature trace. A seismic response is generated by determining phase differences in the backscatter response based on the quadrature modulated backscatter response. Portions of the seismic response above or below a response threshold are removed to generate a threshold seismic response. The threshold seismic response is correlated with at least one of the seismic signals to generate a correlated seismic response.