Headquartered in Denver, Colorado, Triangle Petroleum Corporation (NYSE MKT:TPLM) is a growth-oriented, independent energy company focused on the exploration, development and production of unconventional shale oil and natural gas resources in the United States. Our oil and natural gas reserves and operations are primarily concentrated in the Bakken Shale and Three Forks formations of the Williston Basin in North Dakota and Montana. We hold leasehold interests in approximately 135,000 net acres in the Williston Basin approximately 93,000 of which are predominantly in our core focus area in McKenzie and Williams Counties, North Dakota.
Our primary strategy is to grow our production volumes through the efficient development of our operated Bakken Shale and Three Forks drilling inventory. We conduct our exploration and production operations through our wholly-owned subsidiary, Triangle USA Petroleum Corporation, or TUSA. We completed our first operated well in May 2012. Our growth is facilitated by the use of pad drilling, which increases efficiencies while controlling costs and minimizing environmental impact. We also use advanced completion, collection and production techniques that optimize reservoir production while reducing costs.
In an effort to better control key operations, reduce costs, and retain supply chain value in the Williston Basin, which we view as a resource-constrained and cost-heavy basin, we formed RockPile Energy Services, LLC, or RockPile, and Caliber Midstream Partners LP, or Caliber. RockPile, our wholly-owned oilfield services subsidiary, provides pressure pumping services. Caliber, a 32% owned joint venture with First Reserve Energy Infrastructure Fund, or FREIF, provides water transportation and disposal, and crude oil and natural gas gathering services.
In Roosevelt County, Montana, the "Station Prospect" is a largely contiguous position within the thermally mature area of the Williston Basin. The approximate 42,000 net acre position is predominantly operated and provides Triangle with a scalable development area for the future.