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Showing 1 to 20 of 28 for “"Fracturing Fluid"”.
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Accounting for Remaining Injected Fracturing Fluid
The technology of multi-stage fracturing of horizontal wells made the development of shale gas reservoirs become greatly successful during the past decades. A large amount of fracturing fluid, usually from 53,000 bbls to 81,400 bbls, is injected into the reservoir to create the fractures. However, …
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Optimization of fracturing fluid to increase shale gas production
… producing was demonstrated. Although the hydro-fracturing technology has been conducted in field frequently, sometimes the decrease of permeability has been observed after the treatment. To figure out this phenomenon, the investigation started from the basic characterization of matrix. Believed …
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Risk assessment of groundwater contamination from hydraulic fracturing fluid spills in Pennsylvania
… risk of groundwater contamination from hydraulic fracturing and the shale gas extraction process at large. While several notable incidents of groundwater contamination near shale gas wells have been investigated, the exact causes are uncertain and widely disputed. One of the most frequently …
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Impact of slickwater fracturing fluid compositions on the petrophysical properties of shale and tightsand
<p>"A tight reservoir always requires hydraulic fracturing before production to increase production rate. The additives in hydraulic fluids are highly considerable for a successful stimulation. A friction reducer is often used to reduce the flowing friction in the wellbore during hydraulic …
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Comparison Study of Liquid CO2 and Water as a Fracturing Fluid for Improved Gas Production in Tight Reservoirs
… like horizontal drilling and hydraulic fracturing. Hydraulic fracturing substantially improves production however it is crucial to understand how fracture growth and production comparison when different fluid systems like water and CO2 based systems are being used. In this thesis, based …
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Experimental and Numerical Investigation of Nanotechnology on Foam Stability for Hydraulic Fracturing Application
Hydraulic fracturing is a well-known stimulation technique for creating fractures in a subsurface formation to achieve profitable production rates in a wellbore. The process involves the injection of a high-pressure fracturing fluid to induce fractures around the wellbore in a target interval …
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Surface spills at unconventional oil and gas sites: a contaminant transport modeling study for the South Platte alluvial aquifer
Hydraulic fracturing has revolutionized the U.S.’s energy portfolio by making shale reservoirs productive and commercially viable. However, the public is concerned that the chemical constituents in hydraulic fracturing fluid, produced water, or natural gas itself could potentially impact …
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Model for a Shale Gas Formation with Salt-Sealed Natural Fractures
… higher salinity than the injected fracture fluid may suggest that the injected low salinity fracturing fluid dissolved salts that sealed an existing natural fracture system. In this scenario, the effective permeability would represent that of the natural fracture system induced by salt …
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Characterization of Filter Cake Buildup and Cleanup under Dynamic Fluid Loss Conditions
Hydraulic fracturing is a popular stimulation method in tight gas and shale gas reservoirs that uses a viscous fluid to fracture the reservoir rock and uniformly transport proppant to create a highly conductive path that is kept open by the proppant after fracturing. This method is used to improve …
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Numerical simulation of fluid flow, proppant transport and fracture propagation in hydraulic fractures for unconventional reservoirs.
… The proppant transport and suspension in thin fracturing fluid used in unconventional reservoirs are considerably different from those of fracturing fluids in conventional reservoirs, due to the very low viscosity of fracturing fluids used in the unconventional reservoirs, poor ability to …
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Fracture Stimulation by Nano-assisted Foam-based Fluids in High-Temperature Reservoirs
Fracture stimulation, or hydraulic fracturing, has been increasingly implemented to extract and enhance oil and gas production from unconventional resources with very low permeability. In this stimulation technique, fracturing fluid is injected at very high pressure into the underground to initiate …
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Production Analysis and Enhancement in The Unconventional Tight Formations
… drilled in Alberta using multistage hydraulic fracturing for tight/shale oil and gas development. Analysis of the existing wells’ performance and development of production enhancement techniques are of critical interest for the improvement of the development efficiency in these formations. …
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Geomechanical review of hydraulic fracturing technology
Hydraulic fracturing as a method for recovering unconventional shale gas has been around for several decades. Significant research and improvement in field methods have been documented in literature on the subject. The heterogeneous nature of shale has made hydraulic fracturing design to be unique …
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Correlstion between the volume of slurry and the volume of fracture in Barnett Shale
… permeability in Barnett shale requires hydraulic fracturing to generate wellbore contact with the reservoir in order to achieve economic gas rates by the concept of a single fracture half-length. This is the reason for using fracture half-length of the hydraulic fracture area dimensions through …
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Water management in hydraulic fracturing-a planning and decision optimization platform
Recent developments in hydraulic fracturing technology have enabled cost-effective production of unconventional resources, particularly shale gas in the U.S. The process of hydraulic fracturing is water intensive, requiring 4-7 million gallons of water per well, to which a range of chemicals must …
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Analysis and optimization of coalbed methane gas well production
… into the fractures in the strata by a foam fracturing fluid. The sand acts to support the fracture system, increasing the permeability of formation, and allowing the methane gas to flow to the wellbore. By treating the sand particles with certain reagents, it is possible to render them …
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Application of the Finite Element Method to Solve Coupled Multiphysics Problems for Subsurface Energy Extraction
… estimate the fracture roughness and the type of fluid filling the fracture. The focus of this research study in chapter 2 is to illustrate how the compliance ratio of rough fractures can diverge from the compliance ratio of smooth fractures. The imperfect interface of the fracture is modeled with …
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Coupled 3-d numerical simulation of proppant transport and fluid flow in hydraulic fracturing
Hydraulic fracturing is one of the most common and important stimulation techniques used in oil and gas industry to create high conductivity flow paths for hydrocarbons to flow from the reservoir matrix to the wellbore. Hydraulic fracturing is a complex process including different physical and …
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Emergence of Delamination Fractures around Casing and Its Stability
… failures may lead to upward flow of drilling fluid or formation fluid, which may have significantly adverse consequences like loss of reserve and environmental hazards. In order to maintain wellbore integrity in the long term, it is expedient to examine the causes of failures around the …
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New Models and Analysis Techniques for Diagnostic Fracture Injection Tests
… explores various aspects of hydraulic fracturing diagnostic testing with a primary focus on accurately assessing in-situ stresses and determining formation permeability. Traditional fracture injection/shut-in tests (DFIT’s) play a critical role in this assessment; however, their …
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