Economic recovery of oil trapped at fan margins using high angle wells and multiple hydraulic fractures. Annual report, September 28, 1995--September 27, 1996

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The digital fan margin in the northeast portion of the Yowlumne field contains significant reserves but is not economic to develop using verticle wells. Numerous interbedded shales and deteriorating rock properties limit producibility. In addition, extreme depths (13,000 ft) present a challenging environment for hydraulic fracturing and artificial lift. Lastly, a mature waterflood increases risk because of the uncertainty with size and location of flood fronts. This project attempts to demonstrate the effectiveness of exploiting the distal fan margin of this slope-basin clastic reservoir through the use of a high-angle well completed with multiple hydraulic-fracture treatments. The combination of a ... continued below

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102 p.

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Niemeyer, B.L. September 1, 1997.

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Description

The digital fan margin in the northeast portion of the Yowlumne field contains significant reserves but is not economic to develop using verticle wells. Numerous interbedded shales and deteriorating rock properties limit producibility. In addition, extreme depths (13,000 ft) present a challenging environment for hydraulic fracturing and artificial lift. Lastly, a mature waterflood increases risk because of the uncertainty with size and location of flood fronts. This project attempts to demonstrate the effectiveness of exploiting the distal fan margin of this slope-basin clastic reservoir through the use of a high-angle well completed with multiple hydraulic-fracture treatments. The combination of a high-angle (or horizontal) well and hydraulic fracturing will allow greater pay exposure than can be achieved with conventional verticle wells while maintaining verticle communication between thin interbedded layers and the wellbore. The equivalent production rate and reserves of three verticle wells are anticipated at one-half to two-thirds the cost.

Physical Description

102 p.

Notes

OSTI as DE96001285

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  • Other Information: PBD: Sep 1997

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  • Other: DE96001285
  • Report No.: DOE/BC/14940--5
  • Grant Number: FC22-95BC14940
  • DOI: 10.2172/543665 | External Link
  • Office of Scientific & Technical Information Report Number: 543665
  • Archival Resource Key: ark:/67531/metadc692938

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Office of Scientific & Technical Information Technical Reports

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  • September 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • Nov. 10, 2015, 8:49 p.m.

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Niemeyer, B.L. Economic recovery of oil trapped at fan margins using high angle wells and multiple hydraulic fractures. Annual report, September 28, 1995--September 27, 1996, report, September 1, 1997; United States. (digital.library.unt.edu/ark:/67531/metadc692938/: accessed October 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.