As of today we were able to get the flowlines, valves, and fittings hooked up to the tank battery on the Llama 13-2 well. Adam’s well service also put on a coat of paint and has them looking good (see pic below). The only thing we are waiting on is East Central Electric to bring us power.
Yesterday D & M Well service moved over to the Llama 13-1 well and rigged up their pulling unit. As you recall we have only perforated the Wilcox formation in the top three feet of the zone. This was a thin zone with a less than perfect Cement Bond over the Wilcox zone. When D & M rigged up they ran their swabbing tool into the hole and encountered fluid at 950′ which means their was approx. 2650′ of fluid in the wellbore. The anticipation rose as D & M swabbed the hole dry. Unfortunately by the time we had all the fluid swabbed out of the hole we had 2650′ of Sw and at best a gallon or two of oil on top. Not what what we were looking for. The purpose of swabbing the hole dry is to determine if there is any shows of oil or gas and at what ratio before we proceed. In this formation we had neither to speak of.
At this point we were left with some decisions to make. 1) we had a thin zone, 2) we have a questionable cement bond, 3) we had no show of any measurable amount of oil or gas), 4) we are close to the SW contact line. We could attempt to do a squeeze job by pumping more cement into the existing perforations (50-50 success rate at best on a much thicker zone) and re-perforating the interval and hope that the cement didn’t go up or down hole into more SW. The decision was made that the probability of success was quite low, the decision was made to set a plug and come uphole to the Viola Formation.
We have a large interval in the Viola with a 30′ thick overall interval. We set up and perforated 18′ from 3620′-3638′. We had approx 1500′ of fluid over the perforations when we set off the perforating gun. As it was getting late we shut the well in overnight. Yesterday morning we swabbed back the fluid. After a couple of swab runs the gas came on very strong on each subsequent pull. By the time we were getting the hole swabbed dry we were getting excellent gas and a very good oil cut on each swab run.
We had to shut the well in as our Orbit valve (pressure control) began to leak. By the time we had located a new one and could get it delivered and installed it was quite late. We have Blue Star Acid scheduled for Tuesday morning to do a 4-5000 gal acid job on the Viola formation. We are very optimistic that we will make a commercial well from this interval.
I hope you all have a great weekend, next week will be interesting.
