Changes

[[file:M125-WattenbergField-Figure22.jpg|center|framed|300 px|{{Figure number|22}}Isopach Niobrara Formation; contour interval 50 ft. Axis of Wattenberg High shown in red. Niobrara ranges in thickness from 250 ft to more than 400 ft in mapped area. Red dashed lines show area of Niobrara producers. GWA = Greater Wattenberg Area.]]

[[file:M125-WattenbergField-Figure22.jpg|center|framed|300 px|{{Figure number|22}}Isopach Niobrara Formation; contour interval 50 ft. Axis of Wattenberg High shown in red. Niobrara ranges in thickness from 250 ft to more than 400 ft in mapped area. Red dashed lines show area of Niobrara producers. GWA = Greater Wattenberg Area.]]

[[file:M125-WattenbergField-Figure23.jpg|center|framed|300 px|{{Figure number|23}}Isopach Niobrara Formation; contour interval 50 ft. Niobrara ranges in thickness from 250 ft to more than 400 ft in mapped area. Ro contours modified from Smagala et al. .<ref name=Smag /> and Higley and Cox<refname=HigCox />. Outline of where Niobrara produces shown by dashed orange line. Note coincidence of isopach thin area with Ro anomaly. GWA = Greater Wattenberg Area.]]

[[file:M125-WattenbergField-Figure23.jpeg|center|framed|300 px|{{Figure number|23}}Isopach Niobrara Formation; contour interval 50 ft. Niobrara ranges in thickness from 250 ft to more than 400 ft in mapped area. Ro contours modified from Smagala et al. .<ref name=Smag /> and Higley and Cox<refname=HigCox />. Outline of where Niobrara produces shown by dashed orange line. Note coincidence of isopach thin area with Ro anomaly. GWA = Greater Wattenberg Area.]]

[[file:M125-WattenbergField-Figure24.jpg|center|framed|300 px|{{Figure number|24}}Type log for Niobrara Formation. Well was cored in the B and C chalk beds. Chalks generally have low gamma ray readings, high resistivity, and porosity development. This well was completed in the Codell Sandstone. Reservoirs in the Niobrara are the A, B, C, and Fort Hays chalk intervals. Source beds for the Niobrara include the Sharon Springs, Niobrara chalks, and also A marl, B marl, and C marl. The D marl is organic lean in Wattenberg area. The chalks have been targeted with vertical wells from 1981 through 2010. The play has now become a horizontal play targeting chalks and marls from 2010 to the present.

[[file:M125-WattenbergField-Figure24.jpg|center|framed|300 px|{{Figure number|24}}Type log for Niobrara Formation. Well was cored in the B and C chalk beds. Chalks generally have low gamma ray readings, high resistivity, and porosity development. This well was completed in the Codell Sandstone. Reservoirs in the Niobrara are the A, B, C, and Fort Hays chalk intervals. Source beds for the Niobrara include the Sharon Springs, Niobrara chalks, and also A marl, B marl, and C marl. The D marl is organic lean in Wattenberg area. The chalks have been targeted with vertical wells from 1981 through 2010. The play has now become a horizontal play targeting chalks and marls from 2010 to the present.