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- W2045269910 abstract "Geologic Influences on the Location and Production of Antrim Shale Gas, Michigan Basin K.C. Manger; K.C. Manger ICF Resources Inc. Search for other works by this author on: This Site Google Scholar S.J.P. Oliver; S.J.P. Oliver ICF Resources Inc. Search for other works by this author on: This Site Google Scholar J.B. Curtis; J.B. Curtis Colorado School of Mines Search for other works by this author on: This Site Google Scholar R.J. Scheper R.J. Scheper Gas Research Inst. Search for other works by this author on: This Site Google Scholar Paper presented at the Low Permeability Reservoirs Symposium, Denver, Colorado, April 1991. Paper Number: SPE-21854-MS https://doi.org/10.2118/21854-MS Published: April 15 1991 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Get Permissions Search Site Citation Manger, K.C., Oliver, S.J.P., Curtis, J.B., and R.J. Scheper. Geologic Influences on the Location and Production of Antrim Shale Gas, Michigan Basin. Paper presented at the Low Permeability Reservoirs Symposium, Denver, Colorado, April 1991. doi: https://doi.org/10.2118/21854-MS Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Search nav search search input Search input auto suggest search filter All ContentAll ProceedingsSociety of Petroleum Engineers (SPE)SPE Rocky Mountain Petroleum Technology Conference / Low Permeability Reservoirs Symposium Search Advanced Search AbstractThe Michigan basin's Antrim Shale is one of the most actively drilled gas plays in the United States. Last year, Otsego County, the focus of current drilling activity, was among the leaders in gas well completions.The Antrim is a geologically complex target. Gas producing horizons, located in the black shale facies, are primarily the result of a combination of high kerogen contents and permeability enhancing fracture systems. Preliminary depositional environment and facies work is being incorporated into a depositional model which will assist in the identification of possible areas with greater organic matter preservation. Structural mapping has located subsurface geological variations likely to influence the development of fracture systems. Combined, these geologic factors suggest where gas generation and storage, and permeability are sufficiently enhanced to create economic completion targets.All Antrim wells require stimulation treatments. Stimulation design and success, in part, is affected by the Antrim stratigraphy. Mineralogic and lithologic differences between the black shales and the gray shales that bound them appear to influence the response of the Antrim to hydraulic fracturing. Correlation of core analyses to geophysical logs will enable better location of target horizons and better control in the design of well completions.The Antrim appears to be geologically complex in the study area and this complexity has significant influence on gas productivity. This paper presents initial results from a geologic evaluation in a four township area of southeastern Otsego County, the center of present activity. The purpose of this study is to use geologic factors to better define the location and production of gas from the Antrim Shale. Incorporation of these results in designing exploration and exploitation strategies could enhance gas production.IntroductionThe Devonian Antrim Shale of the Michigan Basin has seen accelerating development since the mid 1980's. Last year it was one of the most actively drilled gas plays in the United States, with 553 completions. 1990 activity far surpasses 1989 with 741 wells already completed in the first three quarters. The yearly total is expected to reach 900. However, little is know about the Antrim's geology and its effect on the location and recovery of gas. As part of its field based Devonian Shales research program, Gas Research Institute (GRI) is conducting geologic analyses of the Antrim Shale aimed at investigating geologic factors affecting gas generation and storage, and reservoir permeability.The Antrim Shale underlies most of the lower peninsula of Michigan (Figure 1). Present drilling is concentrated in Otsego County which contains over 90 percent of Antrim completions. Our study area is located in the southeast comer of Otsego County.A typical Antrim development project consists of about 10 producing wells and a single disposal well. Gas production rates are relatively low, averaging about 60 Mscfd; although some well shave reported rates in excess of 200 Mscfd. Both good and poor wells are often found in the same project indicating possibly highly localized heterogeneities. Inital water production can reach more than 100 Bwpd but generally levels off to 20 to 30 Bwpd after one or two years.The Michigan Basin is a shallow intracratonic basin with a depositional history dominated by carbonate environments.P. 511^ Keywords: antrim shale, gas concentration, concentration, michigan basin, fracture, shale gas, permeability, variation, black shale facies, orientation Subjects: Unconventional and Complex Reservoirs, Shale gas This content is only available via PDF. 1991. Society of Petroleum Engineers You can access this article if you purchase or spend a download." @default.
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- W2045269910 title "Geologic Influences on the Location and Production of Antrim Shale Gas, Michigan Basin" @default.
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