John F Best

US Patent:

20160377754, Dec 29, 2016

Filed:

Jun 24, 2015

Appl. No.:

14/748737

Inventors:

Mayank Malik - Houston TX, US
John DeSantis - Houston TX, US
Fuju Chen - Houston TX, US
Li Jiang - Houston TX, US
Saijin Huang - Houston TX, US
John A. Best - Houston TX, US

Assignee:

Chevron U.S.A. Inc. - San Ramon CA

International Classification:

G01V 1/34
G01V 13/00
G01V 1/30

Abstract:

Desirable completion zones can be identified using closure stress in combination with one or more other attributes such as porosity. One computer-based well placement method includes using the computer to: process a seismic data volume to map the spatial distribution of a seismic-based CSS attribute; acquire logs from one or more boreholes in the subsurface region; derive from the logs a relationship between CSS and a minimum in-situ stress; apply the relationship to the CSS attribute map to produce a landing map that highlights desirable completion zones; and place one or more wells in the desirable completion zones. The borehole logs may include direct measurements of minimum in-situ stress (acquired via microfracture testing), sonic tool measurements of P-wave and S-wave velocity, and density tool measurements of bulk formation density.