Parameter Prediction of Hydraulic Fracture for Tight Reservoir Based on Micro-Seismic and History Matching

Abstract

Hydraulic fracturing is an important measure for the development of tight reservoirs. In order to describe the distribution of hydraulic fractures, micro-seismic diagnostic was introduced into petroleum fields. Micro-seismic events may reveal important information about static characteristics of hydraulic fracturing. However, this method is limited to reflect the distribution area of the hydraulic fractures and fails to provide specific parameters. Therefore, micro-seismic technology is integrated with history matching to predict the hydraulic fracture parameters in this paper. Micro-seismic source location is used to describe the basic shape of hydraulic fractures. After that, secondary modeling is considered to calibrate the parameters information of hydraulic fractures by using DFM (discrete fracture model) and history matching method. In consideration of fractal feature of hydraulic fracture, fractal fracture network model is established to evaluate this method in numerical experiment. The results clearly show the effectiveness of the proposed approach to estimate the parameters of hydraulic fractures.

Experimental investigation on influencing factors of CO2huff and puff under fractured low‐permeability conditions

“…[29][30][31][32][33] In this study, a laboratory simulation experiment was carried out to investigate the effect of fractures on the CO 2 huff and puff of low-permeability cores. The presence of fractures makes the pressure-sensitive effect of low-permeability reservoirs more obvious.…”

“…Therefore, fractures usually affect the performance of EOR in low-permeability reservoirs. [29][30][31][32][33] In this study, a laboratory simulation experiment was carried out to investigate the effect of fractures on the CO 2 huff and puff of low-permeability cores. A diagram of the artificial fracture of the core sample is exhibited in Figure 2.…”

“…Generally, low-permeability reservoirs have a lot of natural microfractures, 29,30 and a large amount of artificial fractures are formed after hydraulic fracturing. The presence of these fractures will make the pressure-sensitive effect of lowpermeability reservoir more obvious.…”

An Introduction to Fractal-Based Approaches in Unconventional Reservoirs — Part I

“…Micro-seismic diagnostic has been introduced into petroleum fields to describe the distribution of hydraulic fractures. Furthermore, Kai Zhang et al 22 integrated micro-seismic technology with history matching to predict the hydraulic fracture parameters. By considering the fractal feature of hydraulic fracture, a fractal fracture network model was established to evaluate this method in numerical experiment.…”

Thermal Conduction Simulation Based on Reconstructed Digital Rocks with Respect to Fractures

“…To solve the difficulty of experiments on tight rocks, the hydraulic conductivity can be calculated based on digital rocks that are constructed from real rocks [30][31][32][33]. Using the reservoir static properties obtained from digital rocks, automated fitting methods can predict the dynamic reservoir properties [34,35]. Although flow properties have been widely evaluated, thermal properties based on digital rocks are seldom studied [36][37][38].…”