Integrated Model Development for Tight Oil Sands Reservoir with 2D Fracture Geometry and Reviewed Sensitivity Analysis of Hydraulic Fracturing

摘要

In this study, oil production rate in tight oil reservoir is much declined due to low permeability reservoir of 0.5 mD, low porosity of 0.15%, high reservoir depth range from 9,962.5 ft to 10,037.5 ft, high closure pressure up to 4,842.5.9 psi among fractures that lead to poor fracture conductivity in the fractures of the reservoir. Usually, high closure pressure is easy to reduce conductivity very fast during oil production. Need to stimulate the reservoir in order to enhance oil production is important to successful project by the application of integrating model development for tight oil reservoir based on the two dimensional Perkins and Kern Nordgren Carter fracture geometry in term of the power law parameters of hydraulic fracturing by systematic of model asNormal faulting stress regime, fracturing fluid model, fracture geometry model, pressure model, material balance, proppant selection, fracture conductivity that have been presented in detail of the research. By series calculation and laboratory experimental for fracture conductivity under closure pressure and proppant fracture concentration of 1.5 lb/ft~2 that fracture conductivity of 5,700 mD.ft of Carbo-Lite ceramics proppant size of 20/40, proppant density of 169 lb/ft~3.In order to estimate the effects of the operating fracturing parameters condition of hydraulic fracturing as the injection rate, injection time, leak-off coefficient on the fracture half-length, fluid efficiency, the net fracture pressure, productivity, dimensionless fracture conductivity, the sensitivity analysis has been proposed for the analysis. The research is provided the new tool for hydraulic fracturing stimulation in order to advance in knowledge for engineer in the field. The post fracture production has been shown about 7.4 fold of oil production increment.