Our primarily low-risk development acreage in the Haynesville Shale trend is centered in Angelina and Nacogdoches counties, Texas and DeSoto and Caddo parishes, Louisiana. As of June 30, 2017, we hold approximately 50,000 gross (26,000 net) acres producing from or prospective for the Haynesville Shale. Since late 2008, we have participated in the completion of approximately 90 gross (33 net) wells targeting the Haynesville Shale.
Our core Haynesville Shale acreage is primarily concentrated in the Bethany-Longstreet and Greenwood-Waskom fields in Caddo and DeSoto Parishes, Louisiana. Our core Haynesville Shale drilling activity includes both operated and non-operated drilling in and around our core acreage positions in Northwest Louisiana. As of June 30, 2017 we had 37,500 gross (18,500 net) acres in the core of the play that is held by production.
In the Shelby Trough / Angelina River Trend part of the Haynesville Shale play, we operate all of our acreage, which is primarily located in Nacogdoches and Angelina counties, Texas. As of June 30, 2017 we held approximately 12,700 gross (7,500 net) acres within this part of the Haynesville Shale play.