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.

(1) Figures in the paper; (2) Verification data of the model; (3) Sensitivity analyses.

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

This dataset is obtained by numerical simulation. This dataset contains methane production rate and cumulative production, carbon dioxide storage rate and cumulative storage as well as evolution fo permeability at the reference point during the recovery of enhanced coal seam methane,

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 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

Data includes reconstructed models and related data

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

the data in this article