Invention Grant
- Patent Title: Method and system for cleat characterization in coal bed methane wells for completion optimization
- Patent Title (中): 煤层瓦斯井防滑钉特征的方法和系统,用于完井优化
-
Application No.: US12184099Application Date: 2008-07-31
-
Publication No.: US07900700B2Publication Date: 2011-03-08
- Inventor: Arpana Sarkar , Rajiv Sagar , Theodore Klimentos , Indrajit Basu
- Applicant: Arpana Sarkar , Rajiv Sagar , Theodore Klimentos , Indrajit Basu
- Applicant Address: US TX Sugar Land
- Assignee: Schlumberger Technology Corporation
- Current Assignee: Schlumberger Technology Corporation
- Current Assignee Address: US TX Sugar Land
- Agency: Osha Liang LLP
- Main IPC: E21B47/14
- IPC: E21B47/14 ; G01V1/09

Abstract:
The invention generally relates a method of determining completion criteria for a coal bed methane reservoir having a plurality of coal seams. The method involves obtaining an acoustic log and a resistivity image log for each of the plurality of coal seams, determining an acoustically determined cleat density for each of the plurality of coal seams using the corresponding acoustic logs, determining maximum horizontal stress direction for each of the plurality of coal seams using the corresponding acoustic logs; determining cleat orientation for each of the plurality of coal seams using the corresponding resistivity image logs, selecting one of the plurality of coal seams upon which to perform a completion operation based on the acoustically determined cleat density, maximum horizontal stress direction, and cleat orientation, and determining the completion criteria for the coal bed methane reservoir using the acoustically determined cleat density, maximum horizontal stress direction, and cleat orientation, where the completion operation is performed using on the coal bed method reservoir using the completion criteria.
Public/Granted literature
- US20090032250A1 METHOD AND SYSTEM FOR CLEAT CHARACTERIZATION IN COAL BED METHANE WELLS FOR COMPLETION OPTIMIZATION Public/Granted day:2009-02-05
Information query