Application of reservoir characterization and advanced technology to improve recovery and economics in a lower quality shallow shelf carbonate reservoir. [Quarterly report], October 1, 1995--December 31, 1995

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Description

West Welch Unit is one of four large waterflood units in the Welch Field in the northwestern portion of Dawson County, TX. This field was discovered early 1940`s and produces oil under a solution gas drive mechanism from the Sand Adres formation at {approx}4800 ft. This field has been under waterflood for 30 yr and a significant portion has been infill drilled on 20-ac density. A 1982-86 CO{sub 2} injection project in the offsetting South Welch Unit yielded positive results. Recent installation of a CO{sub 2} pipeline near the field allowed phased development of a miscible CO{sub 2} injection project ... continued below

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5 p.

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Taylor, A.R. January 1, 1996.

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Description

West Welch Unit is one of four large waterflood units in the Welch Field in the northwestern portion of Dawson County, TX. This field was discovered early 1940`s and produces oil under a solution gas drive mechanism from the Sand Adres formation at {approx}4800 ft. This field has been under waterflood for 30 yr and a significant portion has been infill drilled on 20-ac density. A 1982-86 CO{sub 2} injection project in the offsetting South Welch Unit yielded positive results. Recent installation of a CO{sub 2} pipeline near the field allowed phased development of a miscible CO{sub 2} injection project at the South Welch Unit. Reservoir quality is poorer at West Welch Unit due to relative position to sea level during deposition, and this unit is ideal for demonstrating methods for enhancing economics of IOR projects in lower quality SSC (shallow shelf carbonate) reservoirs. This Class 2 project concentrates on the efficient design of a miscible CO{sub 2} project based on detailed reservoir characterization. During the quarter, progress was made on petrophysical analysis and tomography processing. The geologic model is dependent on these, and the actual reservoir simulation cannot start until the geologic model is complete, although all the preliminary simulation work is being done.

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5 p.

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OSTI as DE96006361

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  • Other Information: PBD: 1 Jan 1996

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  • Other: DE96006361
  • Report No.: DOE/BC/14990--6
  • Grant Number: FC22-94BC14990
  • DOI: 10.2172/207642 | External Link
  • Office of Scientific & Technical Information Report Number: 207642
  • Archival Resource Key: ark:/67531/metadc663948

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  • January 1, 1996

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  • June 29, 2015, 9:42 p.m.

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  • Nov. 18, 2015, 2:25 p.m.

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Taylor, A.R. Application of reservoir characterization and advanced technology to improve recovery and economics in a lower quality shallow shelf carbonate reservoir. [Quarterly report], October 1, 1995--December 31, 1995, report, January 1, 1996; United States. (digital.library.unt.edu/ark:/67531/metadc663948/: accessed October 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.