Assessment of potential around JM, Will-O fields, Val Verde basin
- David K. Davies and Associates, Inc., Houston, TX (United States)
A relatively deep Cambro-Ordovician Ellenburger gas prospect exists around JM gas field in Crockett County and Will-O gas field in Val Verde County of southern West Texas. These fields, discovered in 1965 and 1971, respectively, produce nonassociated gas from Ellenburger carbonates. Other rock units such as Upper Pennsylvanian Strawn limestone, Devonian chert, and Simpson carbonates that are productive in other parts of the Permian Basin have poor reservoir quality in this area. This article gives a brief assessment of their potential. Significant anticlines mapped at the top of Devonian rocks can reflect deeper Ellenburger traps in the prospect area. Several new potentially productive Ellenburger wells can be drilled on these structures. Ellenburger rocks in the general area have adequate to good reservoir quality. Pay zones have 4--8% porosity. Microfractures and intercrystalline porosity constitute the predominant type of pores. Other rocks units, such as the Strawn limestone, Devonian chert, and Simpson rocks do not appear to have potential for hydrocarbon accumulation in this area.
- OSTI ID:
- 52056
- Journal Information:
- Oil and Gas Journal, Journal Name: Oil and Gas Journal Journal Issue: 21 Vol. 93; ISSN OIGJAV; ISSN 0030-1388
- Country of Publication:
- United States
- Language:
- English
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