Water: Hydraulic Fracturing
Hydraulic Fracturing Information Requests
List of the 9 oil and gas companies that received EPA's request
Oil and gas companies that received the request:
|Clayton Williams Energy|
|Laramie Energy II|
|Sand Ridge Operating|
To identify the wells for this request, we first sorted the list of operators by those with the most wells to those with the fewest wells. We defined operators to be “large” if their combined number of wells accounted for the top 50% of wells on the list, “medium” if their combined number of wells accounted for the next 25% of wells on the list and “small” if their number of wells were among the last 25% of wells on the list. To minimize potential burden on the smallest operators, we removed all operators with 9 wells or less from consideration for selection.
Then, using a map from the U.S. Energy Information Administration showing all shale gas plays, EPA classified four different areas of the nation: East, South, Rocky Mountain (including California) and Other. To choose the nine companies that received the request, EPA randomly selected one “large” operator from each geographic area, for a total of four “large” operators, and then randomly, and without geographic consideration, selected two “medium” and three “small” operators.Once the 9 companies were identified, we used a computer algorithm that balanced geographic diversity and random selection within an operator’s list to select 350 wells.