The prospect is located on the west edge of the Fort Worth Basin and the northeast flank of the Bend Arch. The intermingling of these geological features associated with the Bend Arch have been controlling factors that have influenced the occurrence of hundreds of oil and gas fields from many different horizions of sandstones, limestones, conglomerates and an occasional reef that vary in geologic age from Permian, Pennsylvanian, Mississippian, and Ordovician periods. Trapping mechanisms of the fields are varied and include pinch-outs, porosity barriers, closed anticlines, structured noses, reefs, drape structures, and some faulting.
The surface topography of the prospect is low, flat bottom land of Keechi Creek and very fertile for cultivation. Drilling conditions are good in the area, but prudent supervision of each well is essential in order to minimize the problems encountered such as an overpressured gas zone or various zones of possible lost circulation should be encountered.
There are various Strawn sands, that are possible pay zones, deeper than these close fields that MAY develop. The most spectacular example of watching drilling closely is shown in the Wagnon (Strawn Granny Sand) that is 4 miles north of Graford (roughly 5 miles north of us). To stress the point of close well observation while drilling, this field is a prime example. There were many wells drilled through this zone that were completed in the deeper zones, and in some cases, wells were plugged that had drilled through this zone. In the early 1990s this field first started production. The Granny Sand came in around 1730’ to 1800’ with some reported initial production rates of over 275 barrels of oil a day. The TRRC only shows total production of only 238 099 barrels of oil and 219 375 MCF of gas. It is the opinion of the author and other geologists and petroleum engineers that have reviewed the history, that it is possible that the field’s total production could have been doubled if the wells had been drilled on 10 acre spacing instead of the two that most were drilled on and controlled daily extraction of the oil followed. The competing operators were more concerned with the short-term immediate returns instead of prudent production procedures with greater long-term production. There are deeper Strawn sands that also produce.
Three close wells that produce from the formation have shown a cumulative total production of 15750 bbl/85 mmcfg, 12189 bbl/15 mmcfg, and 20266 bbl/0 gas.
Update: We have drilled the well and it has good shows. We are completing the well and perforating the Strawn Granny sands.
Comments are closed