Coalbed methane recovery from multilateral horizontal wells in Southern Qinshui Basin

Analysis of Slug Test Data From Hydraulically Fractured Coalbed Methane Wells

This paper presents new type curves for analyzingslug tests in hydraulically fractured coal seams. The type curves were viable producers, Therefore, these conventional slug test analysis developed using a finite-conductivity,vertical fracture model and techniques cannot be used to either assess the success of the fracturetreatmentor to evaluatethe px.t-fracture potentialof these are presented i...

Well Evaluation for Coalbed Methane

Coalbed Methane Canister Desorption Techniques

The British Columbia Geological Survey Branch and the Geological Survey of Canada have initiated ajoint project to assess the coalbed-methane potential of coal deposits in British Columbia. This project entails participation with private industry to obtain fresh coal samples for desorption from exploration projects throughout the province. Samples are collected from the drill site and undergo a...

Production Forecasting of Coalbed Methane Wells Based on Type-2 Fuzzy Logic System

Coal bed methane (CBM) reservoir production is controlled by a large set of parameters: geology, tectonics, reservoir, completion and operation. Its simulation process is complicated, relative information is difficult to be obtained, so it is necessary to analyze accurately coal bed gas potential production capacity by adopting other mathematics methods in case of incomplete information. Regard...

Numerical Simulation of Coalbed Methane Seepage in Pinnate Horizontal Well Based on Multi-Flow Coupling Model

Abstract: The motive of the study is to establish a seepage flow model of pinnate horizontal well in infinite reservoir according to the characteristics of 3D distribution of CBM pinnate horizontal well. Taking flow pressure drop along the main and branch boreholes into consideration, the fluid flow formulas of CBM pinnate horizontal well are proposed. The corresponding calculation program has ...