DEVELOPMENT OF A METHOD FOR PARTIALLY UNINVADED CORING IN HIGH-PERMEABILITY SANDSTONE

Authors
RATHMELL JJ TIBBITTS GA GREMLEY RB WARNER HR WHITE EK
Citation
Jj. Rathmell et al., DEVELOPMENT OF A METHOD FOR PARTIALLY UNINVADED CORING IN HIGH-PERMEABILITY SANDSTONE, SPE formation evaluation, 10(2), 1995, pp. 65-71
Citations number
NO
Categorie Soggetti
Energy & Fuels",Geology,"Engineering, Petroleum
Journal title
SPE formation evaluation → ACNP
ISSN journal
0885923X
Volume
10
Issue
2
Year of publication
1995
Pages
65 - 71
Database
ISI
SICI code
0885-923X(1995)10:2<65:DOAMFP>2.0.ZU;2-S
Abstract
A newly designed polycrystalline-diamond-compact (PDC) core bit and wa ter-based muds with bridging solids are shown to provide 4-in. diamete r cores with a 2.5-in. uninvaded center. High-permeability sandstones were cored at rates exceeding 90 ft/hr in laboratory and field tests. The mechanisms controlling filtrate invasion are quantified.