HNGs Deep Well Completion Methods

HNG Oil Company has completed over 20 deep gas wells in the past four years with remarkably few problems. The majority of the wells are located in the Delaware Basin of West Texas and range in deliverability from less than 1 MMCF/D to over 30 MMCF/D. Although each completion is different, the same basic steps were followed. Each was perforated in acid with a limited number of deep penetrating, burr-free perforations, and was originally stimulated with a moderate volume of 15% HCl using ball sealers to divert the acid. The mechanical hookup in each case consists of high quality, properly designed tubular goods and involved in these completions from the time the liner is cleaned out until it is flowing is four days for a single and five days for a dual. The key to the entire completion program is simplicity. The more operations involved in a completion and the more equipment placed in the well, the greater the chances for failure.