Study on the main controlling factors of horizontal well production capacity in tight gas reservoirs in Ordos Basin

Abstract

Affected by various geological factors and engineering factors such as reservoir characteristics, horizontal section length, fracturing scale, etc., there are large differences in the production capacity of the single well of the volumetric fracturing horizontal well in the 8th section of the Sulige block box, but the main control factors are not clear. To this end, taking more than 180 horizontal wells in Sulige Area A as a sample, the Pearson correlation method was used to analyze the influence of geological and fracturing construction parameters on production capacity, and the main control factors of single well production capacity were clarified. The results show that the total sand volume, total liquid volume, effective reservoir drilling rate, horizontal section length, effective number of cracks, construction displacement and average sand ratio are the main control factors affecting the production capacity of the horizontal well in the block, based on the above understanding, optimizing the fracturing construction parameters has good guiding significance for the efficient development of tight gas.