Changes

Wattenberg Field is a supergiant oil and gas field located in the synclinal part of the Denver Basin ([[:file:M125-WattenbergField-Figure1.jpg|Figure 1]]). The field was discovered by Amoco Production Company in 1970 with completions in the Lower Cretaceous Muddy (J) Sandstone. Initial reserves for the Muddy (J) Sandstone were estimated to be 1.1 TCFG<ref name= Matuszczak>Matuszczak, R. A., 1973, Wattenberg Field, Denver Basin, Colorado: The Mountain Geologist, v. 10, no. 3, p. 99–105. </ref>. After the Muddy (J) development commenced, additional pays were discovered in the Terry and Hygiene sandstones (1972), Codell Sandstone (1981), Niobrara Formation (1984), and Dakota Lytle Formation (1998). Each of these formations contributes to field growth for the field ([[:file:M125-WattenbergField-Figure2.jpg|Figure 2]]). Also occurring was infill drilling activities and commingling rule changes that encouraged additional completions. Starting in 2010, the field started seeing horizontal drilling in the Codell and Niobrara, which has dramatically increased production ([[:file:M125-WattenbergField-Figure3.jpg|Figure 3A, B]]).

Wattenberg Field is a supergiant oil and gas field located in the synclinal part of the Denver Basin ([[:file:M125-WattenbergField-Figure1.jpg|Figure 1]]). The field was discovered by Amoco Production Company in 1970 with completions in the Lower Cretaceous Muddy (J) Sandstone. Initial reserves for the Muddy (J) Sandstone were estimated to be 1.1 TCFG<ref name= Matuszczak>Matuszczak, R. A., 1973, Wattenberg Field, Denver Basin, Colorado: The Mountain Geologist, v. 10, no. 3, p. 99–105. </ref>. After the Muddy (J) development commenced, additional pays were discovered in the Terry and Hygiene sandstones (1972), Codell Sandstone (1981), Niobrara Formation (1984), and Dakota Lytle Formation (1998). Each of these formations contributes to field growth for the field ([[:file:M125-WattenbergField-Figure2.jpg|Figure 2]]). Also occurring was infill drilling activities and commingling rule changes that encouraged additional completions. Starting in 2010, the field started seeing horizontal drilling in the Codell and Niobrara, which has dramatically increased production ([[:file:M125-WattenbergField-Figure3.jpg|Figure 3A, B]]).

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file:M125-WattenbergField-Figure1.jpg|{{Figure number|1}}Structure contour map of Denver Basin showing location of Wattenberg Field along the basin axis northeast of Denver. Stratigraphic column of producing horizons in Wattenberg also illustrated along with approximate drilling depths. SR = source rock.

file:M125-WattenbergField-Figure1.jpg|{{Figure number|1}}Structure contour map of Denver Basin showing location of Wattenberg Field along the basin axis northeast of Denver. Stratigraphic column of producing horizons in Wattenberg also illustrated along with approximate drilling depths. SR = source rock.

file:M125-WattenbergField-Figure2.jpg|{{Figure number|2}}Production map for Wattenberg Field with various producing horizons color coded. Modified from Ladd<ref name=Ladd>Ladd, J. H., 2001, An overview and development history of the Wattenberg field, <i>in</i> D. Anderson, ed., Gas in the Rockies: Rocky Mountain Association of Geologists, Denver, Colorado, p. 29–42.</ref>; unpublished map created by John Wright and Robert Weimer. Note the original boundary of the field compared to current producing areas.

file:M125-WattenbergField-Figure2.jpg|{{Figure number|2}}Production map for Wattenberg Field with various producing horizons color coded. Modified from Ladd<ref name=Ladd>Ladd, J. H., 2001, An overview and development history of the Wattenberg field, <i>in</i> D. Anderson, ed., Gas in the Rockies: Rocky Mountain Association of Geologists, Denver, Colorado, p. 29–42.</ref>; unpublished map created by John Wright and Robert Weimer. Note the original boundary of the field compared to current producing areas.