Optimization of Horizontal Well Fracturing Schemes Under Different Reservoir Barrier Conditions in Tight Conglomerate Reservoirs

Abstract

In recent years, due to the increasing shortage of oil resources, tight oil reservoirs have become an important part of my country's oil resource production. Hydraulic fracturing technology is one of the most important measures to increase production in the exploitation of unconventional oil and gas reservoirs. In hydraulic fracturing construction, the extension and propagation behavior of fractures in the formation has an important influence on the effect of hydraulic fracturing stimulation. In a layered formation, the propagation behavior of hydraulic fractures is affected by factors such as geological factors, interlayer interface properties, rock mechanical properties, hydraulic fracturing construction parameters, and other factors, and the law of fracture propagation is very complicated. In the actual hydraulic fracturing construction, in addition to the above influencing factors, the conditions of the reservoir barrier will also have a greater impact on the propagation and propagation of fractures. This project uses the fracturing software Mfrac Suite to analyze the impact of tight sandstone petrophysical properties on fracturing. Given the geological characteristics of the tight conglomerate in Mahu, Xinjiang, the fracturing software Mfrac Suite was used to optimize the fracturing construction parameters. Specific to the field application, after small-scale fracturing is performed in the tight Conglomerate reservoir to obtain the stratum and rock mechanics parameters, the fracturing horizontal well design is completed. Use the oil test data to analyze the fracturing effect, combined with the results of small-scale fracturing tests, have a more detailed understanding of the complex process of hydraulic fracturing, and finally realize the optimization of hydraulic fracturing construction parameters and fracture parameters. This topic summarizes the high fracture control technology of low displacement, variable displacement, and the use of low viscosity fracturing fluids, and the optimization of fracturing parameters. The research results have a certain guiding significance for the optimization design of similar reservoir fracturing.