Modeling and optimization of technological parameters for hydraulic fracturing in low-permeability reservoirs
DOI:
https://doi.org/10.31471/2304-7399-2026-22(83)-125-140Keywords:
hydraulic fracturing, production enhancement, modeling, GOHFER, prop-pant, CMHPG, flow rate, low-permeability reservoir, filtration properties.Abstract
A pressing issue in the modern oil and gas industry is increasing the productivity of wells exploiting low-permeability and hard-to-reach formations. The main focus is on the study of hydraulic fracturing (HF) technology as one of the most effective methods for intensifying hydrocarbon production through the creation of artificial high-permeability channels. A detailed analysis of the mechanism of fracture formation in dense sandstones was conducted using modern computer modeling. A static model of an oil and gas field was constructed in this work, which allowed for the assessment of the influence of various geological and technological parameters on the final flow rate. The study of the chemical aspects of the process is of particular scientific and practical value. In particular, the influence of reagents such as carboxymethyl hydroxypropyl guar (CMHPG) and hydrochloric acid (15% HCl) on the dynamics of fracture expansion and the preservation of their flow capacity was investigated. The fracture stabilization process has been optimized. The importance of a step-by-step selection of proppant concentration during the injection of the working fluid has been demonstrated. It has been established that the correct sequencing of stages allows for the avoidance of premature well “stopping” and ensures uniform filling of the created channels. Based on the results of modeling in the GOHFER software package, it was found that the implementation of the proposed hydraulic fracturing regimes yields impressive results: the increase in gas flow rate was approximately 285%, and for oil—over 300%. These indicators confirm the high economic viability of the method for fields with poor reservoir properties.
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