Journal of Natural Gas Science and Engineering

The production of oil and gas can be enhanced by the multistage hydraulic fracturing. The PHF-LSM method, which is combined by the level set method (LSM) and a permeability-based hydraulic fracture (PHF) model, is introduced in this paper. The LSM is used for implicitly modeling the heterogeneity of the different scaled rock matrix, and the PHF model, which was previously used for a single point hydraulic fracture simulation, is extended for simulating multi-fracture development. The heterogeneities of the three interested rock types consist of randomly layered features in both horizontal and vertical directions, the rock matrix with irregular inclusions randomly distributed, and the property distribution of rock determined by the spatial coordinates. The level set functions are given for implicitly describing the rock matrix by introducing continuous random variables. The PHF model is used for simulating the fracture development in the proposed rock types under single point fracturing, multipoint simultaneous fracturing and multistage fracturing. Numerical simulations are performed to study the behavior of fracture propagation. The results address the characteristics of breakdown pressure, stress path, time history of pore pressure and the development of hydraulic fractures when the spacing of injection points varies from small to large. The results indicate that the proposed implicit modeling method works well with the PHF model for simulating the procedures of multipoint and multistage fracturing.

experimental data(Fig.2 and Fig.5), Predicted data (Fig 11)

the data in this article

This dataset is obtained by numerical simulation.This dataset contains the production rate and cumulative production rate of methane , the storage rate and cumulative storage of carbon dioxide as well as the permeability evolution data at the reference point during the recovery of enhanced coalbed methane by injection of flue gas from power plants.

Data of oedometer test of natural gas hydrate-bearing sands with particle-scale simulation

Maceral composition, proximate analysis, elemental analysis, reflectance (Ro), and high-pressure CH4 adsorption of coal

Engineering

Attached file showed the original experimental results of the manuscript.

Data for: Mechanism of Gas Migration Through Microstructure of Cemented Annulus in Deep-water Environment

The original data for this manuscript including all the diagrams and tables