Abstract
Abstract Eight attempts have been made to drill and complete horizontal wells in the Spraberry trend of West Texas. The results have been disappointing to date. The production history of each attempt will be discussed, along with an economic analysis. By using the drainhole production and results from vertical well completions, a model for predicting the performance of these wells will be proposed. The key input to the model is a modified Coates-Denoo relationship between porosity and permeability that utilizes openhole wireline inputs. The model predictions will then be compared to actual performance and used to help predict the optimum completion strategy for wells in the Spraberry trend.
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