Abstract

The Loma Blanca #2H well cored 347 ft. of Lower Austin Chalk (56’), Eagle Ford (272’), and Upper Buda (19’) from 8,117 to 8,464 ft. This core is a core contribution in the Eagle Ford Shale Consortium conducted by Core Laboratories.

The Eagle Ford consists of interbedded foraminifera wackestone to packstone and calcareous marl, deposited in an inner shelf environment, just landward of the Edwards Margin. Bedding between the marl and limestone is gradational. Bioturbation is present locally in the limestones and bentonite laminae are sparse.

Calcite is the most abundant mineral in the Eagle Ford, averaging 60%, and occurs as fossils, matrix, and cements. The cored intervals also consist of quartz (14%), clay (12%), kerogen (8%), and plagioclase (4%). TOC averages 3.6 wt.%. Measured Ro varies between 1.49% to 1.58% indicating dry gas window near the border with the wet gas-condensate zone. Average gas and hydrocarbon-filled porosities are about 6%. Matrix permeability measurements average 5.51 nd. Average gas, oil, and water saturations in the Eagle Ford are 63.93%, 8.53%, and 26.55% respectively.

The well was completed with 16 frac stages along a 4,680 ft. lateral in the Lower Eagle Ford. The well tested 629 BCPD & 5300 MCFD (max. 30-day ave.) and has produced 112 MBC and 878 MMCFG in 9 months.