Simultaneous drilling and snubbing operations speed completion and production in difficult Rocky Mountain fields ///
A tight gas formation on the Pinedale Anticline and in North Jonah Field of west-central Wyoming was discovered in the 1960s, but economical development of the fields was not possible using conventional methods and tools. Over-pressured sands in these fields consist of stacked lentincular pods extending over a 5,000-ft interval. Completion of so many zones using conventional means was often not possible given the expense of early technology.
However, by combining time-saving new technologies with simultaneous drilling, completion and production operations, operators in the area have been able to develop the reservoirs quickly and successfully. To accommodate the time restrictions, Ultra Resources has developed a streamlined process in which wells are drilled with self-moving rigs, stimulated and then completed as live wells using hydraulic snubbing units provided by Boots & Coots. Simultaneous operation of drilling, wireline, fracturing and snubbing equipment on a single pad is common.
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