... completion. In a low permeability environment, multistage fracturing has recently proven to be one of the best options for horizontal completions in tight reservoirs, and increasing the number of fracturing stages will potentially provide a better well productivity. This type of well completion can pose...

... hydraulic fracturing to realize commercial development. As relatively long period of drainage and regional depressurization are needed before the initiation of coalbed methane (CBM) production, the fractures firstly offer channels for drainage. Meanwhile, it is easy for the soft coal and proppants...

... (3) − ∇ · [ v → p c p ] + q ˙ p ,   i n j   / ρ p − q ˙ p , w f / ρ p = ∂ ∂ t [ c p ] Abstract The staged fracturing and microseismic monitoring techniques are used for horizontal well stimulation...

... In addition to the diversion systems mentioned above, an advanced FF SPD designed for fracturing applications in unconventional formations was also developed to ensure conductivity is preserved in the far-field once the fracture closes. The advanced FF SPD is composed of both a dissolvable...

... a mixture of soluble solid particles and an engineered proppant to ensure the temporarily bridged fractures re-open and remain propped for hydrocarbon flow after the soluble material has fully dissolved thus producing conductivity that was not previously attainable ( Gomaa et al. 2016c ). Advantages...

... Abstract Stress field near a hydraulic fracture will be altered during the process of propagation. These stress changes and induced deformation can change the porosity and aperture of the natural fractures, which eventually will change the permeability so that the SRV will be enhanced. Plastic...

... Abstract Production rapid decline is the major problem for the tight sandstone reservoirs in Jilin oilfield. For the particular reservoir investigated in this study, production is not only subjected to the reservoir properties, but also the well completion designs especially fracturing...

... fluid modeling drilling fluids and materials fracturing materials equation of state drilling fluid management & disposal proppant acidizing corrosion inhibitor fracturing fluid high temperature deep well reservoir Upstream Oil & Gas concentration temperature deep well...

... Abstract Unconventional gas reservoirs (shale gas, tight gas and coal bed methane) constitute a large percentage of natural gas supply. Hydraulic fracturing is commonly used to break-up rock matrix and connect natural fractures and cleats to create gas flow pathways. Application of hydraulic...

... where β is the angle between natural fracture orientation to the minimum in-situ stress, can be associated with the friction angle ϕ as β =( π + ϕ )/2 ( Jeager and Cook, 1979 , Zhang, 2013 ). In what follows, a typical hydraulic fracture subject to a non-hydrostatic in-situ stress...

...Introduction The accurate modeling of interaction between flow and geomechanics has become critical for hydraulic fracturing in tight/shale gas reservoirs. Hydraulic fracturing exhibits a strong interaction between flow and geomechanics in stress, temperature, pore volume, and permeability...

... Abstract Stimulated reservoir volume (SRV) has become the key means to the development of shale gas, and the natural fractures influence the complex of fracture network of SRV, significantly. However, currently, the researches on natural fractures are still focus on the geological description...

... Abstract Hydraulic fracturing is an effective approach to bring economic productions for unconventional gas reservoirs. A numerical model is developed to model the complex fracture network after hydraulic fracturing. Particular treatments for full-tensor effects and fractures of different...

...Seismic Attributes Analysis Abstract The storage space of shale can be broadly divided into matrix pore and fracture, of which matrix pore mainly refers to the native micro holes and the secondary micro holes or microcracks formed through hydrocarbon generation by organic matter, clay...

... has a gentle slope and another has a steep slope which is similar with Fracturing wells( Fig. 4 ). Though correlation coefficient is not good, it can be concluded that wells on high part of the anticline have a big probability for high production. Structure In the beginning single domain...

... Abstract For the oil reservoirs with permeability less than 10×10 -3 μm 2 , the recovery rate is unsatisfactory because of poor reserve abundance, low pressure, low injection rate and high initial water saturation. This paper discusses the necessity and rationality of injection well fracturing...

... Three vertical joints set and bedding plane are defined based on the natural fracture dips and strikes data to represent natural fractures in the modelling. The dips and strikes are from the core analysis and verified by dip meters. The rock friction angles, tensile strength and cohesion strength...

... Abstract Stress perturbations near a fault are of great importance for fracturing and drilling design in petroleum engineering. Gravitational, tectonic, and earth structure related effects are major concerns for in-situ stresses determinations. The stress magnitude change, principal stress...

... Detailed analysis of experimental data shows that reservoir flow noise volume is a complex function of flow rate, differential pressure and reservoir quality. It follows that SNL is well suited for detecting producing fractures in shale wells with low flow rates but high drawdown pressures...

... Abstract Generating sufficiently complex fracture network is a prerequisite for horizontal shale gas wells to obtain industrial gas flow. Microseismic monitoring can visually represent the stimulated reservoir volume (SRV) and its dynamic process, which plays an important role in the adjustment...