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Title: Cyclic steaming in heavy oil diatomite

Abstract

Chevron currently uses cyclic steaming as a recovery method to produce economically its heavy oil diatomite resource in the Cymric field, San Joaquin Valley, California. A highly instrumented, cyclically steaming well from this field was simulated in this study to delineate important production mechanisms, to optimize operations, and to improve reservoir management. The model was constrained, as much as possible, by the available measured data. Results show that fluid flow from the well to the reservoir is primarily through the hydraulic fracture induced by the injected steam. Parameters with unique importance to modeling cyclic steaming in diatomites are: (1) induced fracture dimension (length and height), (2) matrix permeability, (3) oil/water capillary pressure, (4) grid size perpendicular to fracture face, and (5) producing bottomhole pressures. Additionally, parameters important for conventional steam injection processes, such as relative permeabilities and injected steam volume, quality, and rate, are important for diatomites also. Oil production rates and steam/oil ratios calculated by this model compare reasonably with field data.

Authors:
;
Publication Date:
OSTI Identifier:
403043
Report Number(s):
CONF-9603154-
TRN: IM9651%%78
Resource Type:
Conference
Resource Relation:
Conference: 65. Society of Petroleum Engineers (SPE) western regional meeting, Bakersfield, CA (United States), 8-10 Mar 1996; Other Information: PBD: 1995; Related Information: Is Part Of 65. western regional meeting: Proceedings; PB: 637 p.
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; OIL WELLS; FLUID INJECTION PROCESSES; CALIFORNIA; MATHEMATICAL MODELS; WELL STIMULATION; ENHANCED RECOVERY

Citation Formats

Kumar, M., and Beatty, F.D.. Cyclic steaming in heavy oil diatomite. United States: N. p., 1995. Web.
Kumar, M., & Beatty, F.D.. Cyclic steaming in heavy oil diatomite. United States.
Kumar, M., and Beatty, F.D.. Sun . "Cyclic steaming in heavy oil diatomite". United States.
@article{osti_403043,
title = {Cyclic steaming in heavy oil diatomite},
author = {Kumar, M. and Beatty, F.D.},
abstractNote = {Chevron currently uses cyclic steaming as a recovery method to produce economically its heavy oil diatomite resource in the Cymric field, San Joaquin Valley, California. A highly instrumented, cyclically steaming well from this field was simulated in this study to delineate important production mechanisms, to optimize operations, and to improve reservoir management. The model was constrained, as much as possible, by the available measured data. Results show that fluid flow from the well to the reservoir is primarily through the hydraulic fracture induced by the injected steam. Parameters with unique importance to modeling cyclic steaming in diatomites are: (1) induced fracture dimension (length and height), (2) matrix permeability, (3) oil/water capillary pressure, (4) grid size perpendicular to fracture face, and (5) producing bottomhole pressures. Additionally, parameters important for conventional steam injection processes, such as relative permeabilities and injected steam volume, quality, and rate, are important for diatomites also. Oil production rates and steam/oil ratios calculated by this model compare reasonably with field data.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Dec 31 00:00:00 EST 1995},
month = {Sun Dec 31 00:00:00 EST 1995}
}

Conference:
Other availability
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