New York-listed Keane Group is set to increase its pressure-pumping capacity by 26% with the purchase of RockPile Energy Services from private equity firm White Deer Energy.

The cash-and-stock deal, valued at roughly $285 million, will give Keane a total capacity of around 1.2 million hydraulic fracturing horsepower, the Houston-based company said.

Keane will pay $135 million in cash and will also issue about 8.7