Author: D Coyne

In the discussion here I use the term net volume to refer to the volume of prospective rock that might be developed to produce tight oil.  For each bench of a prospective tight oil play (Wolfcamp A would be one example of a bench) there is an area estimate (5733 thousand acres for Wolfcamp A of Delaware) and a success ratio (%) = 94.7, in the case of Wolfcamp A.  Net acres are the total acres times the success ratio, for Wolfcamp A, 5429 thousand net acres.  On average the Wolfcamp A of the Delaware basin is about 400 feet thick, so the net volume would be net acres times thickness or 2172 million acre-feet.  An acre-foot is a volume that is one acre (44,000 square feet) by one foot thick or 44,000 cubic feet (or a box that is 1000 ft long by 44 feet wide by 1 foot high.)