Integration of microseismic and other post-fracture surveillance with production analysis: A tight gas study

Clarkson, Christopher R.; Beierle, Joshua

doi:10.1016/j.jngse.2011.03.003

Cited by 86 publications

(19 citation statements)

References 49 publications

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“…27, which exhibits an apparent radial flow period that could be interpreted for a kh and pressure value. The kh estimate for this well (0.182 md*m or 0.60 md*ft) is within the range of values obtained from rate-transient analysis (Clarkson and Beierle, 2011) and appears to be reasonable. Also, the estimated bottomhole pressure is consistent with Fig.…”

Section: Tight Gas Examplessupporting

confidence: 77%

“…Periodic testing of this nature could allow for effective half-length and conductivity to be monitored, perhaps for the purposes of identifying re-stimulation candidates. It should be noted that in our tight gas examples, a low-complexity fracture (planar) fracture system embedded in a single-porosity reservoir was assumed in the analysis, which is consistent with microseismic observations (see Clarkson and Beierle, 2011). However, in shale gas reservoirs, a natural fracture network may have to be considered in the analysis (Ozkan et al, 2009;Apaydin et al, 2011).…”

Section: Tight Gas Examplessupporting

confidence: 76%

“…Both analytical and empirical methods have been advanced. In previous work (Clarkson et al, 2009;Clarkson and Beierle, 2011), we categorized production analysis methods into: a) straight-line (flow-regime) methods; b) type-curve methods; c) analytical and numerical simulation and d) empirical methods. Straight-line analysis involves first the identification of flow regimes, followed by analysis of the flow regime data on specialty plots to obtain hydraulic fracture or reservoir property information.…”

Section: Rate-transient and Production-data Analysismentioning

confidence: 99%

See 2 more Smart Citations

Unconventional gas reservoir evaluation: What do we have to consider?

Clarkson

Jensen

Chipperfield³

2012

Journal of Natural Gas Science and Engineering

Self Cite

136

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Section: Tight Gas Examplessupporting

confidence: 77%

Section: Tight Gas Examplessupporting

confidence: 76%

Section: Rate-transient and Production-data Analysismentioning

confidence: 99%

See 1 more Smart Citation

Unconventional gas reservoir evaluation: What do we have to consider?

Clarkson

Jensen

Chipperfield³

2012

Journal of Natural Gas Science and Engineering

Self Cite

136

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“…However, the application of traditional approaches to unconventional oil/gas reservoirs may lead to uncertainty in production prediction [5]. Recently, many RTA methods have been developed or modified to account for tight gas [23,[37][38][39], tight oil [40], shale gas [33,[41][42][43][44][45][46][47], etc. Uzun et al conducted multi-phase RTA in unconventional reservoirs [2].…”

Section: Introductionmentioning

confidence: 99%

“…Uzun et al conducted multi-phase RTA in unconventional reservoirs [2]. Integrated approaches are also applied to estimate the parameters and forecast production, such as the combination of analytical and empirical methods [5], the integration of straight-line analysis, type curves and reservoir simulation [39].…”

Section: Introductionmentioning

confidence: 99%

An Improved Rate-Transient Analysis Model of Multi-Fractured Horizontal Wells with Non-Uniform Hydraulic Fracture Properties

Cheng

Rui

et al. 2018

Energies

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Although technical advances in hydraulically fracturing and drilling enable commercial production from tight reservoirs, oil/gas recovery remains at a low level. Due to the technical and economic limitations of well-testing operations in tight reservoirs, rate-transient analysis (RTA) has become a more attractive option. However, current RTA models hardly consider the effect of the non-uniform production on rate decline behaviors. In fact, PLT results demonstrate that production profile is non-uniform. To fill this gap, this paper presents an improved RTA model of multi-fractured horizontal wells (MFHWs) to investigate the effects of non-uniform properties of hydraulic fractures (production of fractures, fracture half-length, number of fractures, fracture conductivity, and vertical permeability) on rate transient behaviors through the diagnostic type curves. Results indicate obvious differences on the rate decline curves among the type curves of uniform properties of fractures (UPF) and non-uniform properties of fractures (NPF). The use of dimensionless production integral derivative curve magnifies the differences so that we can diagnose the phenomenon of non-uniform production. Therefore, it's significant to incorporate the effects of NPF into the RDA models of MFHWs, and the model proposed in this paper enables us to better evaluate well performance based on long-term production data.

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Effect of advective flow in fractures and matrix diffusion on natural gas production

Karra

Makedonska

Viswanathan

et al. 2015

Water Resources Research

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Although hydraulic fracturing has been used for natural gas production for the past couple of decades, there are significant uncertainties about the underlying mechanisms behind the production curves that are seen in the field. A discrete fracture network‐based reservoir‐scale work flow is used to identify the relative effect of flow of gas in fractures and matrix diffusion on the production curve. With realistic three‐dimensional representations of fracture network geometry and aperture variability, simulated production decline curves qualitatively resemble observed production decline curves. The high initial peak of the production curve is controlled by advective fracture flow of free gas within the network and is sensitive to the fracture aperture variability. Matrix diffusion does not significantly affect the production decline curve in the first few years, but contributes to production after approximately 10 years. These results suggest that the initial flushing of gas‐filled background fractures combined with highly heterogeneous flow paths to the production well are sufficient to explain observed initial production decline. These results also suggest that matrix diffusion may support reduced production over longer time frames.

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Integration of microseismic and other post-fracture surveillance with production analysis: A tight gas study

Cited by 86 publications

References 49 publications

Unconventional gas reservoir evaluation: What do we have to consider?

Unconventional gas reservoir evaluation: What do we have to consider?

An Improved Rate-Transient Analysis Model of Multi-Fractured Horizontal Wells with Non-Uniform Hydraulic Fracture Properties

Effect of advective flow in fractures and matrix diffusion on natural gas production

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