Economic recovery of oil trapped at fan margins using high-angle wells and multiple hydraulic fractures. [Quarterly report], January 1--March 31, 1996
This project attempts to demonstrate the effectiveness of exploiting thin, layered, low-energy, deposits at the distal margin of a prograding turbidite complex through use of fractured horizontal or high-angle wells. The combination of hydraulic fracturing and horizontal drilling will allow greater pay exposure than conventional vertical wells while maintaining vertical communication between thin interbedded layers and the wellbore. A high-angle well will be drilled in the fan margin portion of a slope-basin clastic reservoir and will be completed with multiple hydraulic fracture treatments. Geologic modeling, reservoir characterization, and fine-grid reservoir simulation will be used to select the well location and orientation. Design parameters for hydraulic fracture treatments will be determined by fracturing an existing test well. Fracture azimuth will be predicted, in part, by passive seismic monitoring from an offset well during fracture stimulation of the test wellbore. An existing vertical well in the Yowlumne Field, Kern Co., California was hydraulically fractured. Microseismic and pressure data collected from this work are being used to predict fracture geometry and azimuth for future treatments in the proposed high-angle well. A detailed reservoir characterization of the field demonstration site is complete. This work include interpretation of a 3-D seismic survey, analysis of all available well logs, description of three whole cores, petrographic analysis of thin sections and incorporation of pressure and production data. A partial-field fine-grid model base on the reservoir characterization has been constructed and initialized. Efforts to history match the model to actual production and pressure data are underway.
- Research Organization:
- Atlantic Richfield Co., Bakersfield, CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FC22-95BC14940
- OSTI ID:
- 241543
- Report Number(s):
- DOE/BC/14940-2; ON: DE96011420
- Resource Relation:
- Other Information: PBD: 29 Apr 1996
- Country of Publication:
- United States
- Language:
- English
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Economic recovery of oil trapped at fan margins using high angle wells and multiple hydraulic fractures. [Quarterly report], October 1--December 31, 1995
Economic recovery of oil trapped at fan margins using high angle wells and multiple hydraulic fractures. Quarterly report, Apr 1--June 30, 1997