After hydraulic fracturing, the geometric characteristics of rock morphology is a crucial means for evaluating the effectiveness of fracture stimulation in enhancing production. In order to quantitatively …Web
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Hydraulic fracturing is a technique in which large volumes of water and sand, and small volumes of chemical additives are injected into low-permeability subsurface formations to increase oil or natural gas flow. The injection pressure of the pumped fluid creates fractures that enhance gas and fluid flow, and the sand or other coarse material ...Web
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Hydraulic fracturing. James Speight, in Shale Oil and Gas Production Processes, 2020. Abstract. Hydraulic fracturing (hydraulic fracture stimulation, fraccing) is a process through which a large number of fractures are created mechanically in the rock, thus allowing the natural gas and/or crude oil trapped in subsurface formations to move …Web
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This is particularly true for tight sands, shales and coalbed methane formations. Hydraulic fracturing (aka fracking, which rhymes with cracking) stimulates wells drilled into these formations, making profitable otherwise prohibitively expensive extraction. Within the past decade, the combination of hydraulic fracturing with …Web
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Hydraulic fracturing — commonly known as "fracking" — has led to a boom in U.S. energy production, with a number of benefits. According a 2014 report from the Federal Reserve Bank of Kansas City, …Web
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Hydraulic fracturing technology has gone through significant developments via continuous advances and method improvements in its application. These advances and improvements have brought hydraulic fracturing to new heights and new geographies in the oil and gas industry having contributed significantly to the reduction in the …Web
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During hydraulic fracturing, pressurized fluid is injected through a well into a subsurface rock layer in order to open the fractures. Hydraulic fracturing requires large volumes of water mixed with chemicals and proppants …Web
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1. Introduction Hydraulic fracturing in combination with horizontal drilling has had a profound impact on the energy sector by providing access to hydrocarbons in low permeability …Web
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The firm's research concluded that fluid end cavitation is the most undiagnosed cause of failure in the hydraulic fracturing sector. Weighing as much as a car and costing between $50,000 and $80,000, fluid ends are where the slurry of water and sand undergoes a rapid pressurization from about 100 psi to 10,000 psi.Web
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Hydraulic fracturing is a particularly environmentally damaging form of extraction, requiring huge quantities of water and sand, releasing toxic chemicals into the groundwater and air, and fragmenting and disturbing landscapes (Kreipl and Kreipl, 2017; Gallegos, 2015; Lave & Lutz, 2014). Yet capitalist logic would seem to endorse this form …Web
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and comprehensive overview of hydraulic fracturing model-ling techniques. Specically, the review will focus on three aspects: (1) the underlying physical processes involved in hydraulic fracturing; (2) the classical and modern hydrau-lic fracturing models; and (3) commercial simulators for hydraulic fracturing design and evaluation. The remain-Web
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Hydraulic fracturing is a necessary technique for shale gas exploitation. In order to have efficient stimulation treatment, a complex fracture network has to be developed, whereas with rich bedding planes and natural fractures, the mechanism of forming a fracture network is not fully understood and it is so tricky to predict …Web
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The main objective of the research is to study the effects of massive hydrate size, approaching angle and displacement on hydraulic fracture propagation. …Web
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Hydraulic fracturing has been widely applied to stimulate the natural gas and oil production from unconventional reservoirs. To optimize the design of hydraulic fracturing in this application, an accurate estimation of the initiation and propagation of hydraulic fractures is indispensable. However, it still remains challenging as a result of the complex stress …Web
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Hydraulic fracturing is a key technology in unconventional reservoir production, yet many simulators only consider the single-phase flow of shale gas, ignoring the two-phase flow process caused by the retained fracturing fluid in the early stage of production. In this study, a three-dimensional fluid–gas–solid coupling reservoir model is …Web
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After multistage hydraulic fracturing of shale gas reservoir, a complex fracture network is formed near the horizontal wellbore. In postfracturing flowback and early-time production period, gas and water …Web
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The interactions between hydraulic fracture morphology and fluid transport mechanisms after large-scale fracturing in low-permeability carbonate reservoirs are important …Web
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Hydraulic fracturing technology is currently the most direct way to improve the production efficiency of oil and gas. Complex fracture network, generated by hydraulic fracturing technology, is recognized as the main flow channel of oil and gas in unconventional reservoirs [[9], [10], [11]].In past decades, many analytical, numerical and …Web
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Abstract The interaction of natural and hydraulic fractures may facilitate lateral fluid propagation in an unconventional reservoir resulting in fast fluid pressure transmission from treatment wells to a fault zone and potential fault shear slip reactivation and associated induced seismicity. Several induced earthquakes (up to 4.1 Mw) occurred …Web
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The hydraulic model selection is a critical phase while designing any hydraulic fracturing treatment. It has been found through the monitoring of actual field treatments that fracture grows in a complicated manner because of layering, heterogeneity, and natural fractures in the formation [].Therefore, selecting a fracturing model is highly …Web
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The fracturing and well pattern optimization of fractured reservoirs is a hot spot in petroleum engineering. In this study, taking the tight oil reservoirs of the Yanchang Formation in the Ordos Basin as an example, an optimized plan of hydraulic fracturing and well pattern deployment of the fractured tight reservoir were systematically studied using …Web
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Hydrofracking is a controversial oil and gas extraction technique developed in the late 1940s to gain access to fossil energy deposits previously inaccessible to drilling operations. The process, "hydraulic fracturing", literally involves the smashing of rock with millions of gallons of water--along with sand and a undisclosed assortment of …Web
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The Defining Series: Elements of Hydraulic Fracturing. Published: 09/09/2015. A well's ability to produce hydrocarbons or receive injection fluids is limited by the reservoir's natural permeability and near-wellbore changes resulting from drilling or other operations. Hydraulic fracturing, also known as hydraulic stimulation, improves ...Web
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Simply speaking, hydraulic fracturing is a process to fracture underground rocks by injecting pressurized fluid into the formation, for which a schematic illustration is given in Fig. 1.With respect to the underlying physics, hydraulic fracturing involves three basic processes: (1) deformation of rocks around the fracture; (2) fluid flow in the …Web
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Dynamic fluid loss tests provide the best method for simulating the fluid loss process during hydraulic fracturing. Through the use of these tests and a reasonable theoretical model for the rate of fracture growth, fracture length can be predicted with acceptable accuracy.Introduction. Successful design of hydraulic fracture treatments …Web
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Hydraulic fracturing refers to the procedure of creating fractures in rocks and rock formations by injecting a mixture of sand and water into the cracks to force underground to open further. The ...Web
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Pulsating hydraulic fracturing (PHF) is an effective stimulation technology that has attracted attention in the past years. To obtain the ideal fracturing effect, it is necessary to understand the response characteristics of the rock under pulsating pressure. However, the current mathematical models are unable to simulate the fatigue …Web
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The hydraulic fracturing method was used to calculate the horizontal principal stress difference (σH-σh). It showed that as the buried depth increases, σH-σh tends to decrease first and then increase. Small-scale fracturing should be used for areas with smaller σH-σh values. Fracturing construction parameters have an impact on oil ...Web
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Hydraulic fracturing is a very complex process that has not yet been fully understood. Furthermore, the number of stages, length of fracture clusters in each stage, proppant and fracturing fluid compatibilities, optimum spacing length, proppant transport and placement, proppant and frac-fluid compatibility, and optimum spacing are some of …Web
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The interaction mode of induced fracture and natural fracture plays an important role in prediction of hydraulic fracture propagation. In this paper, a two-dimensional hydromechanical coupled discrete element model is first introduced in the framework of particle flow simulation, which can well take into account mechanical and …Web
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Hydraulic fracturing of saturated brittle rock is a common discontinuous multi-physics phenomenon. The evolution and flow behavior of hydraulic fractures are the key to multi-field coupling in saturated brittle porous media. A fluid-solid-phase multi-field coupling modeling method for hydraulic fracturing is proposed and implemented by ...Web
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After hydraulic fracturing, the geometric characteristics of rock morphology is a crucial means for evaluating the effectiveness of fracture stimulation in enhancing production. In order to quantitatively analyze the surface undulations of marine and continental shale morphology further following hydraulic fracturing, a method for …Web
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For hydraulic fracturing treatments, the formation of field-scale FNs is a progressive growth process from local to full domain, where the fracture initiation path under the core-plunger scale plays a decisive role. On account of this, the macroscopic morphology of HFs near-wellbore and its interaction with bedding planes are discussed. ...Web
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Hydraulic fracturing is a well-stimulation technique used commonly in low-permeability rocks like tight sandstone, shale, and some coal beds to increase oil and/or gas flow to a well from petroleum-bearing rock …Web
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