The presence and content of water will certainly affect the gas adsorption capacity shale evaluation content. In order to reasonably evaluate under actual reservoir conditions, effect on methane needs be investigated. Taking Da’anzhai Member Lower Jurassic Ziliujing Formation in northeastern Sichuan Basin, China as an example, this study attempts reveal pre-adsorbed shale-gas systems by conduct...

By way of introduction, the general invariant integral (GI) based on the energy conservation law is presented, with mention of cosmic, gravitational, mass, elastic, thermal and electromagnetic energy of matter application to demonstrate the approach, including Coulomb's Law generalized for moving electric charges, Newton's Law generalized for coupled gravitational/cosmic field, the new Archimed...

The success of shale gas in North America has attracted increased interest in “unconventional” reservoirs. Two critical factors for shale-gas reservoirs are units amenable to hydrologic fracture stimulation and sufficient natural gas content. The effectiveness of hydrologic fracture stimulation is influenced by rock geomechanical properties, which are related to rock mineralogy. The natural gas...

Many assessments of the promise and pitfalls to shale gas development are incomplete. They tend to focus primarily on the benefits for electricity generation and gas producers, and therefore only address in a limited way the impact shale gas has on wider issues such as energy security and stewardship. We expand on the existing literature by considering a broad treatment of the energy security n...

Natural gas has become a leading source of alternative energy with the advent of techniques to economically extract gas reserves from deep shale formations. Here, we present an assessment of private well water quality in aquifers overlying the Barnett Shale formation of North Texas. We evaluated samples from 100 private drinking water wells using analytical chemistry techniques. Analyses reveal...

In the past decade, there has been a massive growth in the horizontal drilling and hydraulic fracturing of shale gas and tight oil reservoirs to exploit formerly inaccessible or unprofitable energy resources in rock formations with low permeability. In North America, these unconventional domestic sources of natural gas and oil provide an opportunity to achieve energy self-sufficiency and to red...

In order to determine the optimum lithofacies for continental shale, reservoir characteristics of different types were studied based on a series experiments. The lacustrine organic-rich shale Shahezi Formation is divided into siliceous (ORS), argillaceous (ORA), calcareous (ORC), and mixed (ORM) shales. ORS, ORA, ORC, ORM shales all carried out comprehensive comparative analysis. results showed...

Shale gas proponents argue this unconventional fossil fuel offers a ―bridge‖ towards a cleaner energy system by offsetting higher-carbon fuels such as coal. The technical feasibility of reconciling shale gas development with climate action remains contested. However, we here argue that governance challenges are both more pressing and more profound. Reconciling shale gas and climate action requi...