Jupiter Resources Inc. opened a private offering of about US$1.1 billion, in aggregate principal amount, of senior notes due 2022, the company said July 28.

The net proceeds will support its acquisition of the Bighorn properties from Encana Corp. (NYSE: ECA, TO: ECA.TO), and will also support general corporate and investment purposes, the company said.

Also, Jupiter noted that it will enter a senior secured, reserve-based revolving credit facility either before or after the Bighorn acquisition closes. This facility, expected to have $1.5 billion, will have an initial borrowing base of CA$550 million, the company said.

The facility should be undrawn at the Bighorn acquisition’s closing, Jupiter added.

Calgary, Alberta-based Jupiter Resources Inc. explores and produces natural gas in western Canada.