A Parametric Comparison of Horizontal and Vertical Well Performance

Mukherjee, Hemanta; Economides, Michael J.

doi:10.2118/18303-pa

Cited by 241 publications

(89 citation statements)

References 9 publications

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“…The nonlinear streamlines result in an additional pressure drop. Mukherjee and Economides [45] presented a formulation to take this additional pressure drop into consideration. …”

Section: Region 1 In This Region the Diffusivity Equation Is Given Bymentioning

confidence: 99%

A Mathematical Pressure Transient Analysis Model for Multiple Fractured Horizontal Wells in Shale Gas Reservoirs

et al. 2018

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Multistage fractured horizontal wells (MFHWs) have become the main technology for shale gas exploration. However, the existing models have neglected the percolation mechanism in nanopores of organic matter and failed to consider the differences among the reservoir properties in different areas. On that account, in this study, a modified apparent permeability model was proposed describing gas flow in shale gas reservoirs by integrating bulk gas flow in nanopores and gas desorption from nanopores. The apparent permeability was introduced into the macroseepage model to establish a dynamic pressure analysis model for MFHWs dual-porosity formations. The Laplace transformation and the regular perturbation method were used to obtain an analytical solution. The influences of fracture half-length, fracture permeability, Langmuir volume, matrix radius, matrix permeability, and induced fracture permeability on pressure and production were discussed. Results show that fracture half-length, fracture permeability, and induced fracture permeability exert a significant influence on production. A larger Langmuir volume results in a smaller pressure and pressure derivative. An increase in matrix permeability increases the production rate. Besides, this model fits the actual field data relatively well. It has a reliable theoretical foundation and can preferably describe the dynamic changes of pressure in the exploration process.

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“…The nonlinear streamlines result in an additional pressure drop. Mukherjee and Economides [45] presented a formulation to take this additional pressure drop into consideration. …”

Section: Region 1 In This Region the Diffusivity Equation Is Given Bymentioning

confidence: 99%

A Mathematical Pressure Transient Analysis Model for Multiple Fractured Horizontal Wells in Shale Gas Reservoirs

et al. 2018

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“…It is worth noting that fluid flow from the fractures to the horizontal wellbore is radial in the near-well region ( Figure 3). In order to minimize the error caused by linear flow approximation, a choke flow factor is introduced [42]:…”

Section: Fracture Flowmentioning

confidence: 99%

Pressure Transient Behavior of Horizontal Well with Time-Dependent Fracture Conductivity in Tight Oil Reservoirs

et al. 2017

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This work presents a discussion on the pressure transient response of multistage fractured horizontal well in tight oil reservoirs. Based on Green's function, a semianalytical model is put forward to obtain the behavior. Our proposed model accounts for fluid flow in four contiguous regions of the tight formation by using pressure continuity and mass conservation. The time-dependent conductivity of hydraulic fractures, which is ignored in previous models but highlighted by recent experiments, is also taken into account in our proposed model. We also include the effect of pressure drop along a horizontal wellbore. We substantiate the validity of our model and analyze the different flow regimes, as well as the effects of initial conductivity, fracture distribution, and geometry on the pressure transient behavior. Our results suggest that the decrease of fracture conductivity has a tremendous effect on the well performance. Finally, we compare our model results with the field data from a multistage fractured horizontal well in Jimsar sag, Xinjiang oilfield, and a good agreement is obtained.

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“…Because of the variation of streamline, an additional pressure drop can occur. It is apparent that solving the problem of transverse hydraulic fractures of multistage fracturing horizontal well needs to append a flow-convergence skin factor S c , and the definition of those kinds of skin factor is presented as follows (Mukherjee andEconomies 1991, Ekaterina Stalgorova andLouis Mattar 2013):…”

Section: Seepage Model For Infinite-conductivity Fracturesmentioning

confidence: 99%

“…Besides, in terms of NFR, the stress sensitivity of natural fractures has certain influence on well performance (Samaniego et al 1980;Pedrosa and Petrobras 1986;Archer 2008;Wang 2014), especially for these kinds of ultra-low permeability; therefore, the stress sensitivity is also considered in this paper. Finally, the flowconvergence effects and formation damage by fracturing fluid are also considered with the conception of flow-convergence skin (Mukherjee and Economies 1991;Stalgorova and Mattar 2013) and hydraulic fracture skin.…”

Section: Introductionmentioning

confidence: 99%

Pressure transient analysis of multistage fracturing horizontal wells with finite fracture conductivity in shale gas reservoirs

Dai

Jia

et al. 2016

Environ Earth Sci

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A new analytical solution of pressure transient analysis is proposed for multistage fracturing horizontal well (MFHW) with finite-conductivity transverse hydraulic fractures in shale gas reservoirs. The effects of absorption, diffusion, viscous flowing, stress sensitivity, flow convergence, skin damage and wellbore storage are simultaneously considered as well in this paper. Laplace transformation, source sink function, perturbation method and superposition principle are, respectively, employed to solve related mathematical models of reservoir system and hydraulic fracture system. And then boundary element method (BEM) is applied to couple reservoir system and hydraulic fracture system. The transient pressure is inverted from Laplace space into real time space with Stehfest numerical inversion algorithm. Based on this new solution, the distribution of transient pseudo-pressure for MFHW with multiple finite-conductivity transverse hydraulic fractures is obtained. Different flowing regimes are identified, and the effects of relevant parameters are analyzed as well. The essence of this paper is considering the effects of transient gas flowing occurrence in finite-conductivity hydraulic fractures with BEM. Compared with some existing models and numerical simulation model of shale gas reservoirs, this proposed new model can provide a relative more accurate analysis of the relevant parameters, especially for the fracture conductivity. In conclusion, this new model provides the relative accurate and comprehensive evaluation results for multistage fracturing horizontal technology.

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A Parametric Comparison of Horizontal and Vertical Well Performance

Cited by 241 publications

References 9 publications

A Mathematical Pressure Transient Analysis Model for Multiple Fractured Horizontal Wells in Shale Gas Reservoirs

A Mathematical Pressure Transient Analysis Model for Multiple Fractured Horizontal Wells in Shale Gas Reservoirs

Pressure Transient Behavior of Horizontal Well with Time-Dependent Fracture Conductivity in Tight Oil Reservoirs

Pressure transient analysis of multistage fracturing horizontal wells with finite fracture conductivity in shale gas reservoirs

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