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An Analytical Model for Capturing the Decline of Fracture Conductivity in the Tuscaloosa Marine Shale Trend from Production Data

Figure 1. Schematic chart between two fractures. (a) Virtual boundary between two fractures. (b) Schematic chart of pressure distribution.

An Analytical Model for Capturing the Decline of Fracture Conductivity in the Tuscaloosa Marine Shale Trend from Production Data Production data analyses with the model revealed that the pressure-dependent fracture conductivity in the TMS in the Mississippi section declines following a logarithmic mode, with dimensionless coefficient χ varying between 0.116 and

Cyclic CH4 Injection for Enhanced Oil Recovery in the Eagle Ford Shale Reservoirs

Figure 1. The sketch of CH4 injection process in the fractured horizontal well (CH4 molecules diffuse into different nanopores).

The confined phase behavior was incorporated in the model considering the critical property shifts and capillary pressure. Subsequently, we built a field-scale simulation model of the Eagle Ford shale reservoir. The fluid properties under different pore sizes were evaluated. Finally, a series of studies were conducted to examine the contributions of

Pore Structure Characterization and the Controlling Factors of the Bakken Formation

Figure 1. Location of the Williston Basin and study area.

The Bakken Formation develops micropores, mesopores, and macropores. However, the Upper and Lower Bakken shale are dominated by micropores, while the Middle Bakken tight reservoir is dominated by mesopores. The total pore volume and specific surface area of the Middle Bakken are significantly higher than those of the Upper and

United States Tight Oil Production 2018

U.S. tight oil shale oil production 11-01-18 permian Eagle Ford Bakken Bonespring Wolfcamp Spraberry Woodford

Figure 1 shows the United Stated Tight Oil Production in percentages. We can see here which are the main Tight Oil producers in U.S.: Spraberry, Bakken, Eagle Ford, Wolfcamp, Bonespring and Niobrara-Codell are the six biggest tight oil players in the United State controlling 89% of the total tight oil

U.S. dry shale gas production 2018

The total production of dry shale gas in the United States in the month of November 2018 was 63,36bcf per day: Marcellus, Permian, Utica, Eagle Ford, Bakken, Haynesville

Figure 1 shows the United Stated Dry Shale Gas Production in percentages. We can see here which are the main shale gas producers in U.S: Marcellus, Permian,  Utica,  Haynesville and  Eagle Ford are the biggest shale gas players in USA controlling 74,3% of the total shale gas production with Marcellus

Geological characteristics, main challenges and future prospect of shale gas

Fig. 2. Distribution diagram for onshore shale gas fields in the US [3].

It includes non-marine shale gas potential, core technology and equipment for resource deep than 3500 m, complex surface “factory mode” production, human geography and other non-technical factors. (4) Process economic evaluation under the conditions of government financial subsidies. China's shale gas project FIRR is about 8.0%–9.0%. Considering the global shale

The shale gas revolution: Barriers, sustainability, and emerging opportunities

Fig. 1. Map of the Barnett Shale formation and production. The map illustrates the county-level spatial distribution of shale gas production (main map) and average per-well production rate (inset).

Abstract Shale gas and hydraulic refracturing has revolutionized the US energy sector in terms of prices, consumption, and CO2 emissions. However, key questions remain including environmental concerns and extraction efficiencies that are leveling off. For the first time, we identify key discoveries, lessons learned, and recommendations from this shale gas revolution

Unconventional resource’s production under desorption-induced effects

Fig. 1. Desorption isotherms for four U.S. shale formations.

Hence, it is essential to investigate the effects of induced permeability, porosity, and stress by desorption on ultimate hydrocarbon recovery. We have developed a numerical model to study the effect of changes in porosity, permeability and compaction on four major U.S. shale formations considering their Langmuir isotherm desorption behavior. These resources

Optimization of Multiple Hydraulically Fractured Horizontal Wells in Unconventional Gas Reservoirs

Figure 5: Two scenarios of multiple horizontal well placement.

This paper demonstrates the accuracy of numerical modeling of multistage hydraulic fractures for actual Barnett Shale production data by considering the gas desorption effect. Six uncertain parameters, such as permeability, porosity, fracture spacing, fracture half-length, fracture conductivity, and distance between two neighboring wells with a reasonable range based on Barnett

Numerical simulation study on miscible EOR techniques for improving oil recovery in shale oil reservoirs

Fig. 15 Effect of the injected gas on oil viscosity (molar diffusion mechanism is OFF). a Natural gas, b CO2

Firstly, numerical simulation methods of compositional models have been incorporated with local grid refinement of hydraulic fractures to mimic the performance of these miscible gases in shale reservoirs conditions. Implementation of a molecular diffusion model in the LS-LR-DK (logarithmically spaced, locally refined, and dual permeability) model has been also conducted.

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

Production Decline Curves of Tight Oil Wells in Eagle Ford Shale

This study derives typical production curves of tight oil wells based on monthly production data from multiple horizontal Eagle Ford shale oil wells.

  Abstract This study derives typical production curves of tight oil wells based on monthly production data from multiple horizontal Eagle Ford shale oil wells. Well properties initial production (IP) rate and production decline rate were documented, and estimated ultimate recovery (EUR) was calculated using two empirical production decline curve models, the

U.S. Tight Oil Production 2017

U.S. Tight Oil Production. Eagle Ford, Bakken, Spraberry, Bonespring, Wolfcamp, Niobrara-Codell, Woodford, Austin Chalk, Marcellus, Utica, Emanuel Martin

The total Tight Oil production in the United States in the month of August 2017 was 4,75MMbbl per day being the main producing fields Eagle Ford with 1,17MMbbl/d, Bakken with 1,02MMbbl/d, Spraberry with 0,93MMbbl/d, Wolfcamp with 0,55MMbbl/d, Bonespring with 0,35MMbbl/d and Niobra-Codell with 0,33MMbbl/d according to the monthly report submitted

U.S. Dry Shale Gas Production 2017

U.S. Dry Shale Gas Production 2017. Antrim, Bakken, Woodford, Barnett, Fayetteville, Eagle Ford, Haynesville, Marcellus, Utica, Permian, Rest of US Shale. Emanuel Martin.

The total production of dry shale gas in the United States in the month of August 2017 was 46,029 Bcf per day being the main producing fields Marcellus with 17,545Bcf/d, Permian with 5,082Bcf/d, Haynesville with 4,389bcf/d, Utica with 4,348Bcf/d, Eagle Ford with 4,085Bcf/d, Barnet with 2,795Bcf/d and Woodford with 2,483Bcf/d

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