Microseismic 101: Monitoring and Evaluating Hydraulic Fracturing to Improve the Efficiency of Oil and Gas Recovery from Unconventional Reservoirs

2015 ◽  
Author(s):  
Adam Yousefzadeh ◽  
Qi Li ◽  
Roberto Aguilera
Keyword(s):  
Hydraulic Fracturing ◽  
Oil And Gas ◽  
Unconventional Reservoirs ◽  
Gas Recovery

scholarly journals The Local Economic and Welfare Consequences of Hydraulic Fracturing

2019 ◽  
Vol 11 (4) ◽  
pp. 105-155 ◽  
Author(s):  
Alexander W. Bartik ◽  
Janet Currie ◽  
Michael Greenstone ◽  
Christopher R. Knittel
Keyword(s):  
Willingness To Pay ◽  
Hydraulic Fracturing ◽  
Equilibrium Model ◽  
Household Income ◽  
Oil And Gas ◽  
Economic Indicators ◽  
Spatial Equilibrium ◽  
Welfare Impacts ◽  
Gas Recovery ◽  
Spatial Equilibrium Model

Exploiting geological variation and timing in the initiation of hydraulic fracturing, we find that fracking leads to sharp increases in oil and gas recovery and improvements in a wide set of economic indicators. There is also evidence of deterioration in local amenities, which may include increases in crime, noise, and traffic and declines in health. Using a Rosen-Roback-style spatial equilibrium model to infer the net welfare impacts, we estimate that willingness-to-pay (WTP) for allowing fracking equals about $2,500 per household annually (4.9 percent of household income), although WTP is heterogeneous, ranging from more than $10,000 to roughly 0 across 10 shale regions.(JEL D12, K42, L71, Q35, Q51, Q53, R41)

scholarly journals In situ transformation of hydraulic fracturing surfactants from well injection to produced water

2019 ◽  
Vol 21 (10) ◽  
pp. 1777-1786 ◽  
Author(s):  
Brandon C. McAdams ◽  
Kimberly E. Carter ◽  
Jens Blotevogel ◽  
Thomas Borch ◽  
J. Alexandra Hakala
Keyword(s):  
Environmental Impact ◽  
Hydraulic Fracturing ◽  
Oil And Gas ◽  
Produced Water ◽  
Unconventional Reservoirs ◽  
Oil And Gas Development ◽  
Hydrocarbon Recovery ◽  
Fracturing Fluids ◽  
Unconventional Oil And Gas

Chemical changes to hydraulic fracturing fluids within fractured unconventional reservoirs may affect hydrocarbon recovery and, in turn, the environmental impact of unconventional oil and gas development.

Efficient evaluation of gas recovery enhancement by hydraulic fracturing in unconventional reservoirs

2016 ◽  
Vol 35 ◽  
pp. 873-881 ◽  
Author(s):  
Junchao Li ◽  
Zhengdong Lei ◽  
Huiying Tang ◽  
Changbing Tian ◽  
Bin Gong
Keyword(s):  
Hydraulic Fracturing ◽  
Unconventional Reservoirs ◽  
Gas Recovery

Laboratory-Scale-Model Testing of Well Stimulation by Use of Mechanical-Impulse Hydraulic Fracturing

SPE Journal ◽  
2015 ◽  
Vol 20 (03) ◽  
pp. 536-549 ◽  
Author(s):  
Luke P. Frash ◽  
Marte Gutierrez ◽  
Jesse Hampton
Keyword(s):  
Hydraulic Fracturing ◽  
Oil And Gas ◽  
Mechanical Energy ◽  
Scale Model ◽  
True Triaxial ◽  
Gas Recovery ◽  
Well Production ◽  
Well Injectivity ◽  
Stimulation Method ◽  
Mechanical Impulse

Summary Reservoir stimulation is commonly used to increase well-production rates and enable economic oil and gas recovery from conventional and unconventional reservoirs. One potential stimulation method that has been laboratory tested as a means to increase well injectivity after conventional hydraulic fracturing is mechanical-impulse hydraulic fracturing (MIHF). MIHF is a high-strain-rate stimulation method that uses a mechanical-energy source as an alternative to rapid gas expansion. Field-scale viability of MIHF was evaluated by use of elastic mechanics and thermodynamics. Results from laboratory tests are presented in which associated flow data indicated significant increases to well injectivity after MIHF stimulation. Tests were performed in two granite specimens with dimensions of 300×300×240 mm3 and 300×300×300 mm3, respectively. The first specimen was unconfined at room-temperature conditions, whereas the second was subjected to heating and true-triaxial confinement. Stimulated well injectivity was evaluated with a series of step-constant-pressure and step-constant-flow injection tests.

Packer-Induced Stresses During Hydraulic Well Fracturing

1981 ◽  
Vol 103 (4) ◽  
pp. 336-343 ◽  
Author(s):  
W. E. Warren
Keyword(s):  
Hydraulic Fracturing ◽  
Oil And Gas ◽  
Circular Cylindrical Shell ◽  
Elastic Solid ◽  
Gas Recovery ◽  
Linear Elastic ◽  
Analytical Approximations ◽  
Induced Stresses ◽  
The Difference

Well bore stresses induced by inflatable packers during hydraulic fracturing operations are investigated. The geologic formation is modeled as an unbounded homogeneous isotropic linear elastic solid containing an infinitely long circular cavity, while the packer is modeled as a semi-infinite thin-walled circular cylindrical shell. For given packer properties, these induced stresses are shown to depend on the difference between packer pressure and fracturing pressure and can become significant. Typical numerical results are obtained and presented graphically. Analytical approximations for the maximum values of these stresses are also presented. While these effects are of no importance in the usual application of hydraulic fracturing to enhance oil and gas recovery, they are crucial in attempts to estimate in-situ stresses from hydraulic fracturing pressure data.

scholarly journals Numerical modeling of porous ceramics microstructure

2019 ◽  
Vol 1 (22) ◽  
pp. 5-17 ◽  
Author(s):  
Danuta Miedzińska
Keyword(s):  
Finite Element Method ◽  
Numerical Modeling ◽  
Hydraulic Fracturing ◽  
Porous Ceramics ◽  
Unconventional Reservoirs ◽  
Gas Release ◽  
Small Particles ◽  
Gas Recovery ◽  
Composite Fabrication ◽  
New Material

The presented research is directed to the porous ceramics microstructural behaviour assessment with the use of numerical methods. Such new material can be used for thermal insulation, filters, bio-scaffolds for tissue engineering, and preforms for composite fabrication. One of the newest and most interesting applications, considered in this work, is a usage of those materials for production of proppants for hydraulic fracturing of shale rocks. The hydraulic fracturing is a method of gas recovery from unconventional reservoirs. A large amount of fracturing fluid mixed with proppant (small particles of sand or ceramics) is pumped into the wellbore and its pressure causes the rock cracking and gas release. After fracturing the fluid is removed from the developed cracks leaving the proppant supporting the fracture. In the paper the grain porous ceramics which is used for proppant particles preparation was studied. The influence of grains distribution on the porous ceramics mechanical behaviour during compression was simulated with the use of finite element method.

Shale, Quakes, and High Stakes: Regulating Fracking-Induced Seismicity in Oklahoma, USA and Lancashire, UK

2019 ◽  
Vol 3 (1) ◽  
pp. 1-14
Author(s):  
Miriam R. Aczel ◽  
Karen E. Makuch
Keyword(s):  
United States ◽  
Hydraulic Fracturing ◽  
Shale Gas ◽  
Seismic Activity ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
High Volume ◽  
The United States ◽  
Horizontal Drilling ◽  
Induced Seismic Activity

High-volume hydraulic fracturing combined with horizontal drilling has “revolutionized” the United States’ oil and gas industry by allowing extraction of previously inaccessible oil and gas trapped in shale rock [1]. Although the United States has extracted shale gas in different states for several decades, the United Kingdom is in the early stages of developing its domestic shale gas resources, in the hopes of replicating the United States’ commercial success with the technologies [2, 3]. However, the extraction of shale gas using hydraulic fracturing and horizontal drilling poses potential risks to the environment and natural resources, human health, and communities and local livelihoods. Risks include contamination of water resources, air pollution, and induced seismic activity near shale gas operation sites. This paper examines the regulation of potential induced seismic activity in Oklahoma, USA, and Lancashire, UK, and concludes with recommendations for strengthening these protections.

Simulation of proppant transport and fracture plugging in the framework of a radial hydraulic fracturing model

2020 ◽  
Vol 35 (6) ◽  
pp. 325-339
Author(s):  
Vasily N. Lapin ◽  
Denis V. Esipov
Keyword(s):  
Numerical Model ◽  
Hydraulic Fracturing ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Injection Rate ◽  
Fluid Injection ◽  
Subtraction Technique ◽  
Gas Industry ◽  
Proppant Transport ◽  
Hydraulic Fracture Propagation

AbstractHydraulic fracturing technology is widely used in the oil and gas industry. A part of the technology consists in injecting a mixture of proppant and fluid into the fracture. Proppant significantly increases the viscosity of the injected mixture and can cause plugging of the fracture. In this paper we propose a numerical model of hydraulic fracture propagation within the framework of the radial geometry taking into account the proppant transport and possible plugging. The finite difference method and the singularity subtraction technique near the fracture tip are used in the numerical model. Based on the simulation results it was found that depending on the parameters of the rock, fluid, and fluid injection rate, the plugging can be caused by two reasons. A parameter was introduced to separate these two cases. If this parameter is large enough, then the plugging occurs due to reaching the maximum possible concentration of proppant far from the fracture tip. If its value is small, then the plugging is caused by the proppant reaching a narrow part of the fracture near its tip. The numerical experiments give an estimate of the radius of the filled with proppant part of the fracture for various injection rates and leakages into the rock.

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