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The integrated feasibility analysis of water reuse management in the petroleum exploration performances of unconventional shale reservoirs

Fig. 2 Percentage of freshwater sources.

The objective of this comprehensive study is to conduct an investigation into the studied field and analyze the assessment of necessary water and produced water which is provided in the surface for reinjection procedures in the hydraulic fracturing and water injectivity; in respect of the way, petroleum and drilling industries

Enhancing recovery and sensitivity studies in an unconventional tight gas condensate reservoir

Fig. 2 Permeability and porosity variation of the simulation model. a Permeability distribution. b Porosity distribution

Sensitivity analysis of the key factors such as primary production duration, bottom-hole pressures, and fracture conductivity is conducted and their effects on the well production performance are analyzed. Results show that, compared with the simple depletion method, both the cumulative gas and condensate production increase with fluids injected. Produced gas

Characterization of drilling waste from shale gas exploration in Central and Eastern Poland

Fig. 1 Concentrations of metals in drilling fluids from five different drilling locations in Poland

It was stated that water extracts of drilling fluids and drill cuttings, according to anions presence, had not any specific constituents of concern based on FAO irrigation guidelines, the USEPA WQC, and toxicity values. X-ray diffraction analysis was used to understand the structure and texture of waste drilling fluid solids

A New Method to Calculate the Recoverable Reserves and Recovery Ratio of Shale Gas Reservoir

A New Method to Calculate the Recoverable Reserves and Recovery Ratio of Shale Gas Reservoir

The method is based on the material balance equation, which has a wide application range. The method cannot only calculate the recoverable reserves and recoveries of free gas in fractures, but also calculate recoverable reserves and recoveries of free gas and adsorbed gas in the matrix. The calculated results show that

Statistical, Data-Driven Approach to Forecasting Production from Liquid-Rich Shale Reservoirs

Figure 3. Oil rate vs. MBT—near-critical fluid.

Principal Components Methodology (PCM) was applied to production data from the representative wells by using Singular Value Decomposition (SVD) to calculate the principal components (PCs). These principal components were then used to forecast oil and solution gas production from the near-critical oil wells with production histories ranging from 0.5 to

Recommendations on Improving Fiscal and Taxation Policies of Shale Gas Industry in China

With the rapid development of economy and the sharp increase of population, energy consumption is increasing and fossil energy reserves are decreasing. Shale gas, as a kind of unconventional natural gas, is very rich in our country, which makes the development and utilization of natural gas enter an important field.

Therefore, this paper introduces the development situation of shale gas industry in our country and the advantages and disadvantages of the development and utilization of shale gas, and finally discusses the fiscal and taxation policy suitable for the development of shale gas industry in our country by drawing on the

The legal and regulatory framework for the EU’ shale gas exploration and production regulating public health and environmental impacts

Fig. 2 EU MS shale gas deposits map. Source: International Energy Agency KPMG, press reports (2012)

However, this article shows that the EU shale gas regulatory framework is not, “fit for purpose”. It will critically evaluate current European Union shale gas regulations and offer some recommendations for improvement. Abbreviations ADR   Treaty of the European Union BAT   Best available techniques BCM   Billion cubic metres CEU   Council of the

Simulation and visualization of the displacement between CO2 and formation fluids at pore-scale levels and its application to the recovery of shale gas

The lattice Boltzmann method (LBM) can simulate the CO2 displacement processes in a two-dimensional or three-dimensional (3D) pore structure, but until now, the CO2 displacement mechanisms had not been thoroughly investigated and the 3D pore structure of real rock had not been directly taken into account in the simulation of

Prospect of shale gas recovery enhancement by oxidation-induced rock burst

The organic matter and pyrite in shale rocks can produce a large number of dissolved pores and seams to improve the gas deliverability of the matrix pore throats to the fracture systems. Meanwhile, in the oxidation process, released heat and increased pore pressure will make shale rock burst, inducing expansion

Development of gas-tight threads based on API round threads and its evaluation

Fig. 2. Photos of a gas-tight thread.

It is shown that the gas sealing performance of this gas-tight thread is good, and the results of ultimate internal pressure cycling and the thermal cycling test on sealing pipe ends meet the requirements of ISO 13679. Besides, its internal pressure strength, tensile strength and collapse strength are much higher

Improved Water Use Estimates for Drilling and Hydrualic Fracturing in Northeastern Colorado

The development of unconventional resources in tight shales has stimulated considerable growth of oil and gas production in Northeastern Colorado, but has led to concerns about added demands on the region’s strained water resources. Northeastern Colorado’s semi-arid environment, population growth, competing water demands and uncertainty about drilling and hydraulic fracturing water requirements have resulted in scrutiny and conflict surrounding water use for tight shales. This study collects water use data from wells in Northeastern Colorado to improve water estimates and to better understand important contributing factors.

This study shows that the number of hydraulic fracturing stages is a better measure of the future water demands for horizontal wells. Vertical wells use significantly less water than horizontal wells and will be less prevalent in the future. Introduction Water resources in Northeastern Colorado and the western United States are constantly

Comparative Study and Analysis of the Development of Shale Gas between China and the USA

Figure 1. The relationship between shale gas and other types of oil and gas reservoir (revised from Schenk C. J. & Pollastro R. M., 2001 [5] ).

This paper presents the importance of the formation principle of shale gas and the energy application, and compares the progress of shale gas studies, exploitation technology as well as the study hot-points between China and the USA. Meanwhile, this paper states the difficulties and challenges with the development of shale

Fault reactivation and earthquakes with magnitudes of up to Mw4.7 induced by shale-gas hydraulic fracturing in Sichuan Basin, China

Figure 6 Numerical model for coupled thermal-hydrological-mechanical simulation of injections in horizontal wells for hydraulic fracturing.

The geologic reasons why earthquake magnitudes associated with hydraulic fracturing operations are so high in this area are discussed. Because hydraulic fracturing operations are on the rise in the Sichuan Basin, it would be beneficial for the geoscience, gas operator, regulator, and academic communities to work collectively to elucidate the

Examining the Effects of Environmental Policy on Shale Gas Production: The Case of Alberta, Canada

Figure 2. CO/RE model. (After Konschnik and Boling 2014).

This paper applies the CO/RE model of Konschnik and Bolingin examining Alberta’s environmental regulatory framework and the impact; it will have on further shale gas production in the province. Aside from the identification of risks associated with increased seismicity, the results of this examination suggest that the current regulatory environment