Paper published in a journal (Scientific congresses and symposiums)
Assessing Mechanical and Petrographic Properties of Fine-Grained Formations From Samples Collected in Deep Oil Wells
Descamps, Fanny; Tshibangu, Katshidikaya; Da Silva, N. et al.
2014
 

Files


Full Text
SPE 14UNCV-167752-MS.pdf
Publisher postprint (697.38 kB)
Request a copy

All documents in ORBi UMONS are protected by a user license.

Send to



Details



Abstract :
[en] Gas shales are fine grained fissile detrital sedimentary rocks. But shale is often used as a catch-all term including different rocks with a non-negligible clay minerals content which leads to typical physical-chemical characteristics. Several properties are generally assessed for shale gas plays (TOC, porosity...). However, regarding the access to the reservoir, drilling into the formations implies a good knowledge of their mechanical and petrographic properties. As classical cores are quite difficult to collect from deep wells, unconventional techniques using small samples are useful (Tshibangu et al. 1999). When dealing with hydraulic fracturing, the formation brittleness is to be assessed. Several estimators exist among which we propose the so named plasticity index determined from punching tests. In the framework of a collaboration of more than fifteen years between the university and the drill bits manufacturer, samples coming from all over the World and associated with difficult drilling conditions have been collected and processed in the laboratory. This work involved thin section characterization and mechanical tests like FPMs abrasiveness, Shore hardness and punching tests. Recently, a database was then built in order to analyze the cumulated information (Descamps et al. 2013). In the context of gas shales, this database includes various fine grained rocks like shales, claystones, fine grained sandstones (i.e. grain or crystal size below 125 microns). In this paper, two main axes are developed. First, we describe typical properties of fine grained rocks, especially when they are associated to difficult drilling environments. Then, we look to how those properties can be linked together. Particular interest will be taken on abrasiveness regarding the selection of drilling bits and on brittleness assessment in relation to hydraulic fracturing.
Research center :
CRIM - Ingénierie des matériaux
Disciplines :
Geological, petroleum & mining engineering
Mechanical engineering
Earth sciences & physical geography
Author, co-author :
Descamps, Fanny  ;  Université de Mons > Faculté Polytechnique > Génie Minier
Tshibangu, Katshidikaya ;  Université de Mons > Faculté Polytechnique > Génie Minier
Da Silva, N.
Regnard, S.
Language :
English
Title :
Assessing Mechanical and Petrographic Properties of Fine-Grained Formations From Samples Collected in Deep Oil Wells
Publication date :
25 February 2014
Event name :
SPE/EAGE European Unconventional Conference and Exhibition
Event place :
Vienna, Austria
Event date :
2014
Research unit :
F408 - Génie Minier
Research institute :
R400 - Institut de Recherche en Science et Ingénierie des Matériaux
Available on ORBi UMONS :
since 28 January 2014

Statistics


Number of views
2 (0 by UMONS)
Number of downloads
0 (0 by UMONS)

Scopus citations®
 
3
Scopus citations®
without self-citations
2

Bibliography


Similar publications



Contact ORBi UMONS