Research On Mechanism And Numerical Analysis Of Directional Hydraulic Fracturing Technology

At present our country’s increasing proportion of low permeability oil and gas fields. For domestic oil and gas field development has entered a, in the stage of high water cut period, the single direction of oil and gas permeability lower and even multiple directions, thus in the process of production will produce too much waste of resources, and make the ground stress distribution is uneven, lead to the difficulty of high and stable yield oil and gas field is more and more big. Repeated fracturing as old gas fields is an important part of comprehensive treatment, stable water control oil. The problems faced by the current domestic refracting, be badly in need of new technological advances to reverse the repeated fracturing success rate is low in our country, after repeated fracturing low permeability oil and gas layer, large rock damage and low yield increases, the period of validity is short, the research behind the scene construction such as passive situation. Directional hydraulic fracturing perforating technology is a directional hydraulic perforating and fracturing in the integration of new production volume reconstruction technology, can be used in low permeability oil(gas) and other complex reservoir volume production.Directional hydraulic fracturing perforating technology can effectively to repeat the old oil and gas field fracturing, the new reservoir and fracturing can be effective crushing different direction to form a new fracture or fracture network, improve the old hydrocarbon reservoir permeability, reduce the damage of rock, to improve the output of oil and gas fields and the final production rate.This article through to the traditional, on the basis of repeated fracturing technology, analyzes on the advantages of the directional hydraulic fracturing perforating technology. Hydraulic perforating on directional hydraulic perforating mechanism of broken rock, crack and fracture to extension mechanism are analyzed. From theory to describes the feasibility and superiority of directional hydraulic fracturing perforating technology, and the numerical analysis method, to verify the feasibility of directional hydraulic fracturing perforating technology and advantages. Through theoretical and numerical analysis methods show that the directional hydraulic fracturing perforating technology can effectively improve the production ability of reservoir.