Study On Synergistic Effect And Optimization Of Volcano Rock Gas Reservoir Volume Fracturing Cracks

A plurality of oil and gas basin volcano rocks are widely distributed in both at home and abroad and at home and abroad have been found, with the increasing demand for oil and gas resources, volcano rock reservoir exploitation are receiving more and more attention, but this kind of gas reservoir burial depth, the overlying strata complex gas reservoir, high temperature, rock changes frequently, the development of the physical and mechanical properties of difference is very big, natural fracture, strong heterogeneity, stress difference is big, the horizontal well fracturing technology is the key of effective volume to use this kind of storage. Horizontal well fracturing to volume fracturing can complete a plurality of reservoir in a relatively short time disposable, and minimizes the reservoir damage, in order to achieve effective protection of reservoir and increase the reconstruction volume, increase the initial production and ultimate recovery.In this paper, deep volcanic strata in the north for the study of volcanic mineral composition were identified, using core data, logging data and log data analysis fractur ed igneous situation, geometry and spatial distribution characteristics, and igneous rock formations rock mechanics characteristics of experimental analysis; establish the body from the equation of state of stress cracking and fracture initiation constructed a mat hematical model to determine the form of crack initiation; by determining the function model, dividing the reservoir from the blocking effect of natural Domain crack distri bution and the distribution of natural fractures domain can break; the use of numerical simulation methods, from gas reservoir percolation mechanism study start, taking into account the non-Darcy effects are bound to exist and the impact on yield production wells in the fracturing process, introduction of non-Darcy flow correction coefficient associated gas and water flow rate, the establishment of a two-phase gas-water wells fracturing numerical simulation model, using the model developed for the gas reservoir fracturing horizontal wells yield prediction and fracture parameters were Optimized de sign, research multibank multistage fracture, fracture density and fracture length affect parameters such as horizontal well fracturing production, possession of hydraulic fractu ring volcanic gas parameter optimization design guide.