Production Patterns of Eagle Ford Shale Gas: Decline Curve Analysis Using 1084 Wells

Guo, Kang; Zhang, Baosheng; Aleklett, K.; Höök, Mikael

doi:10.3390/su8100973

Cited by 18 publications

(10 citation statements)

References 19 publications

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“…Tight oil and gas reserves are not likely as expansive as initially estimated [42]. Despite the potential health and environmental risks [43], tight gas production will be necessary towards smoothing the drop in conventional gas production that is projected by mid-century [39,44].…”

Section: Reserve Estimatesmentioning

confidence: 98%

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The Climate-Independent Need for Renewable Energy in the 21st Century

Warner

Jones

2017

Energies

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Abstract:In December 2015 the nations of the world agreed, in principle, to limit global warming to no more than 2 • C above pre-industrial levels. In order to achieve this goal, recent publications have shown that (1) more than 50% of known fossil fuel reserves need to remain unused, and (2) the timing of the transition away from fossil fuels needs to achieve 50% renewable energy by 2028, an expansion of renewable sources of 37-fold in the next 12 years. This rate of expansion is unprecedented and unlikely to be achieved. Even utilizing the 50% of fossil fuels untapped in a <2 • C scenario results in significant expansion of renewable energy sources by 2100. Here we examine three fossil fuel reserve estimates and two per capita energy consumption tracks to understand how dominant renewable energy sources need to be during the second half of the 21st century. We find that per capita energy consumption rates are a more significant factor in the demand for renewable energy infrastructure, as wide ranging estimates of fossil fuel reserves still result in peak production by mid-century. At either of the consumption rates, attempting to uphold the 2 • C global warming goal would demand more energy from renewable sources than was produced from all sources in 2014. In total, the world will likely require between 600 and 2000 exajoules of renewable energy by the year 2100, a significant expansion from the 13 produced in 2014. Despite meaningful gains in renewable energy sources, the transition away from fossil fuels is not keeping pace with rising global population, and expansion of global per capita consumption. Even in the absence of global warming concerns, renewable energy infrastructure needs to immediately begin significant expansion.

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Section: Reserve Estimatesmentioning

confidence: 98%

“…The resurgence has been attributed to tight production. Most of the tight production in the United States is from small sweet spots and exhibit sharp and predictable depletion rates [38,39]. Aided by the recent drop in oil prices worldwide, the boom has called into question the notion of peak oil.…”

Section: Reserve Estimatesmentioning

confidence: 99%

The Climate-Independent Need for Renewable Energy in the 21st Century

Warner

Jones

2017

Energies

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“…The production pattern of shale gas well differs widely to conventional gas well and production patterns developed by Guo et al [24] disclose that production pattern of a shale gas well exhibits property of rapidly attaining a peak production followed by steep decline which concludes shale gas wells have high initial flow rate, shorter lifespan and a low long-term production level. Contrary to fractured shale gas wells; conventional gas wells, depending on their permeability, have lower initial flow rate, steadily attaining a peak production, low or moderate decline, with shorter transient flow regime, and longer lifespan.…”

Section: Production Modellingmentioning

confidence: 99%

“…Arps has identified three types of production decline behavior: Exponential (b = 0), Harmonic (b = 1) and Hyperbolic (0 < b < 1) where Cheng et al [27] identifies hyperbolic form of equation i.e., (D i ≥ 0), (0 < b < 1) as commonly used for production modelling and a most favored choice in industrial practice. Guo et al [24] attribute this common use of equation to its strong empirical compliance with relatively lower requirement of input data. The equation reveals two most important parameters needed to define and estimate the production profile of a well over its lifetime: well's initial production rate and decline rate or its trajectory over the well's lifetime.…”

Section: Production Modellingmentioning

confidence: 99%

Economic Feasibility Analysis of Shale Gas Extraction from UK’s Carboniferous Bowland-Hodder Shale Unit

Ahmed

Gomari

2018

Resources

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For many years, shale gas exploitation has been generating contradictory views in the UK and remains subject of rising debates throughout these years. Favorably backed by the government, looking upon it as potential mechanism for gas import independency and competitiveness in global gas industry while strongly opposed by stakeholders (mainly public), idea of shale gas exploitation remains disputed with no substantial progress in past years. And this irresolution is worsened by obscurity of estimates for potential reserves and conflicting assessments on potential impact of shale gas. Yet, in case shale industry is signaled to search and extract resources, there remains another scrutiny stage that shale industry will be subjected to i.e., its extraction must be economically feasible as extracting unconventional resources is financially expensive and riskier than conventional. Hence, this study aims at analyzing the economics of UK's most prolific Bowland shale play development by a financial model that discovers gas prices range required to earn capital cost on investment in Bowland shale play and is tested on three development plans where it determines that based on given set of hypothesis and past decade's average gas price of $6.52/Mcf, none of the development plans hold enough probability of adding value, however, hybrid plan formulated by combination of consistent drilling and refracturing proves as economically sustainable with a RGP mean $7.21/Mcf, significantly lower than $9.76/Mcf mean for 'drilling only' plan. It is found that required gas price is most sensitive to initial production rate and drilling costs where ±10% variation offsets RGP by ≈±8% and ±7%.

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“…Unconventional reservoirs have shown great potential for energy supply in long-term applications [1,2]. Shale and tight formations are common examples of unconventional resources, and they are considered as vast hydrocarbon resources based on their availability and the huge storage capacity [3].…”

Section: Introductionmentioning

confidence: 99%

Gas Production from Gas Condensate Reservoirs Using Sustainable Environmentally Friendly Chemicals

et al. 2019

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Unconventional reservoirs have shown tremendous potential for energy supply for long-term applications. However, great challenges are associated with hydrocarbon production from these reservoirs. Recently, injection of thermochemical fluids has been introduced as a new environmentally friendly and cost-effective chemical for improving hydrocarbon production. This research aims to improve gas production from gas condensate reservoirs using environmentally friendly chemicals. Further, the impact of thermochemical treatment on changing the pore size distribution is studied. Several experiments were conducted, including chemical injection, routine core analysis, and nuclear magnetic resonance (NMR) measurements. The impact of thermochemical treatment in sustaining gas production from a tight gas reservoir was quantified. This study demonstrates that thermochemical treatment can create different types of fractures (single or multistaged fractures) based on the injection method. Thermochemical treatment can increase absolute permeability up to 500%, reduce capillary pressure by 57%, remove the accumulated liquids, and improve gas relative permeability by a factor of 1.2. The findings of this study can help to design a better thermochemical treatment for improving gas recovery. This study showed that thermochemical treatment is an effective method for sustaining gas production from tight gas reservoirs.

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Production Patterns of Eagle Ford Shale Gas: Decline Curve Analysis Using 1084 Wells

Cited by 18 publications

References 19 publications

The Climate-Independent Need for Renewable Energy in the 21st Century

The Climate-Independent Need for Renewable Energy in the 21st Century

Economic Feasibility Analysis of Shale Gas Extraction from UK’s Carboniferous Bowland-Hodder Shale Unit

Gas Production from Gas Condensate Reservoirs Using Sustainable Environmentally Friendly Chemicals

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