What Is Stimulated Reservoir Volume?

Mayerhofer, Michael; Lolon, Elyezer; Warpinski, N.R.; Cipolla, Craig L.; Walser, Douglas W.; Rightmire, Claude Michael

doi:10.2118/119890-pa

Cited by 478 publications

(218 citation statements)

References 11 publications

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“…The numerical model built for the representative element volume of the fracture is applied to estimate the performance following every iteration stage, which assumes that the homogeneous reservoir and each staged fractal fracture are open, and the existing natural fractures are not modeled. Since conductivity declines further from fracture networks [29,30], the multi-scale conductivity is also considered in the simulation.…”

Section: Resultsmentioning

confidence: 99%

Numerical Simulation of Fluid Flow through Fractal-Based Discrete Fractured Network

Wang

et al. 2018

Energies

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Abstract:In recent years, multi-stage hydraulic fracturing technologies have greatly facilitated the development of unconventional oil and gas resources. However, a quantitative description of the "complexity" of the fracture network created by the hydraulic fracturing is confronted with many unsolved challenges. Given the multiple scales and heterogeneity of the fracture system, this study proposes a "bifurcated fractal" model to quantitatively describe the distribution of induced hydraulic fracture networks. The construction theory is employed to generate hierarchical fracture patterns as a scaled numerical model. With the implementation of discrete fractal-fracture network modeling (DFFN), fluid flow characteristics in bifurcated fractal fracture networks are characterized. The effects of bifurcated fracture length, bifurcated tendency, and number of bifurcation stages are examined. A field example of the fractured horizontal well is introduced to calibrate the accuracy of the flow model. The proposed model can provide a more realistic representation of complex fracture networks around a fractured horizontal well, and offer the way to quantify the "complexity" of the fracture network in shale reservoirs. The simulation results indicate that the geometry of the bifurcated fractal fracture network model has a significant impact on production performance in the tight reservoir, and enhancing connectivity of each bifurcate fracture is the key to improve the stimulation performance. In practice, this work provides a novel and efficient workflow for complex fracture characterization and production prediction in naturally-fractured reservoirs of multi-stage fractured horizontal wells.

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Section: Resultsmentioning

confidence: 99%

Numerical Simulation of Fluid Flow through Fractal-Based Discrete Fractured Network

Wang

et al. 2018

Energies

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“…The basic approach it to commonly refer the volume of microseismic response cloud as SRV, under the premise that each of the reservoir cell contribute to production (Mayerhofer et al, 2010). However, this analysis approach disregards some of the critical fracture characteristics, like connectivity between different fractures and the conductivity distribution of the fracture system.…”

Section: Microseismic Methodsmentioning

confidence: 99%

“…The concept of " Unconventional" mostly reflect the technology, knowledge and also the experience at present (Lolon et al, 2009;Mayerhofer et al, 2006), which could change into the "Conventional" reservoir with the rapid development of the science and technology. The important development technology of unconventional reservoirs, such as shale gas is hydraulic fracturing with stimulated reservoir volume, which could stimulate the formation and increase the reservoir contact significantly (Mayerhofer et al, 2010). Moridis et al (2010) divided the complex fracture network system into four types of media in unconventional reservoir, the fracture in different region have large differences either in fracture geometry or in the fracture properties.…”

Section: Introductionmentioning

confidence: 99%

A review of stimulated reservoir volume characterization for multiple fractured horizontal well in unconventional reservoirs

Wang¹,

Zheng²,

Sheng³

et al. 2017

Adv. Geo-Energ. Res.

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Unconventional resource exploration has boosted U.S. oil and gas production, which is successfully by horizontal well drilling and hydraulic fracturing. The horizontal well with multiple transverse fractures has proven to be effective stimulation approach could increase reservoir contact significantly. Unlike the single fracture planes in typical low permeability sands, fractures in shales tends to generate more complex, branching networks. The concept of stimulated reservoir volume (SRV) was developed to quantitative measure of multistage fracture interact with natural fractures in unconventional reservoir. However, the simple fracture modeling of the past do not suitable for the complex scenarios simulation. This paper reviews the mainstream characterization method of stimulated reservoir volume in shale reservoirs, including microseismic interpretation, rate transient analysis method, analytical and semi-analytical method and numerical method. Finally, the systematic evaluation of application conditions with respect to each method and further research directions for characterization method are proposed.

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“…Many corrections to obtain the apparent permeability of shale matrix have been proposed to take the non-Darcy flow behavior and gas slippage effect into account [4][5][6]. The gas can then be travelled through a complex fracture network induced by hydraulic fracturing stimulation process, which creates a high permeable region called stimulated reservoir volume (SRV) [7,8]. Mainly, two types of fractures are involved in this SRV region: the widely distributed reactivated preexisting natural fractures with complex geometry and the newly created sparsely distributed hydraulic fractures with relatively less complex geometry.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Influencing Factors on the Well Performance in Shale Gas Reservoir

Dai¹,

Xue²,

Wang³

et al. 2017

Geofluids

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Due to the ultralow permeability of shale gas reservoirs, stimulating the reservoir formation by using hydraulic fracturing technique and horizontal well is required to create the pathway of gas flow so that the shale gas can be recovered in an economically viable manner. The hydraulic fractured formations can be divided into two regions, stimulated reservoir volume (SRV) region and non-SRV region, and the produced shale gas may exist as free gas or adsorbed gas under the initial formation condition. Investigating the recovery factor of different types of shale gas in different region may assist us to make more reasonable development strategies. In this paper, we build a numerical simulation model, which has the ability to take the unique shale gas flow mechanisms into account, to quantitatively describe the gas production characteristics in each region based on the field data collected from a shale gas reservoir in Sichuan Basin in China. The contribution of the free gas and adsorbed gas to the total production is analyzed dynamically through the entire life of the shale gas production by adopting a component subdivision method. The effects of the key reservoir properties, such as shale matrix, secondary natural fracture network, and primary hydraulic fractures, on the recovery factor are also investigated.

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What Is Stimulated Reservoir Volume?

Cited by 478 publications

References 11 publications

Numerical Simulation of Fluid Flow through Fractal-Based Discrete Fractured Network

Numerical Simulation of Fluid Flow through Fractal-Based Discrete Fractured Network

A review of stimulated reservoir volume characterization for multiple fractured horizontal well in unconventional reservoirs

Analysis of the Influencing Factors on the Well Performance in Shale Gas Reservoir

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