This paper discusses the analysis of pressure-transient responses of horizontal wells intercepting multiple infinite-conductivity transverse fractures.It is concluded that, based on the requirement of balanced depressurization, the rectangular or diamond shaped pattern is the best pattern for hydraulically-fractured anisotropic coal seams, and the optimal well spacing is determined by both permeability ratio and hydraulic fracture length.In this paper, a flowback model is developed to simulate the flowback behaviors of the carrying fluid and proppant from the recompacted fracture system in shale wells.
The findings of this research reveal that wells featuring a greater number of stages and tighter cluster spacing tend to exhibit elevated cluster interference, resulting . Presented data include information on shale gas formations and wells, the hydraulic .063 Corpus ID: 98110098; Optimization of hydraulically fractured well configuration in anisotropic coal-bed methane reservoirs @article{Xu2013OptimizationOH, title={Optimization of hydraulically fractured well configuration in anisotropic coal-bed methane reservoirs}, author={Bingxiang Xu and .Horizontal wells are hydraulically fractured to form a certain geometry of proppant fractures in the reservoir and ultimately achieve increased production. Factors affecting hydraulically fractured well performances in the Marcellus shale gas reservoirs. Prats (1961) and Hale and Evers (1981) used elliptic coordinates to describe the flow of fluid from a reservoir to a hydraulically fractured vertical well. Then a numerical model is utilized to .This study applies the Lindenmayer system based on fractal theory to generate synthetic fracture networks in hydraulically fractured wells.Further development of stimulated reservoir volume (SRV)-fracturing technologies for horizontal wells is necessary to address the current situation of decreasing energy production from conventional sources and continuous increases in the proportion of alternative energy sources (unconventional hydrocarbons). In Society of Petroleum Engineers Unconventional Reservoirs Conference 2008 (pp.Schlagwörter:Fractured WellsPressureSchlagwörter:Hydraulic FracturingPublish Year:2013In this paper, using a multi-stage fractured horizontal well in the Chang 8 formation of the YanChang oilfield, China as an example, we applied the modified dilation-recompaction model in the STARS™ simulator to dynamically simulating the multi-stage hydraulic fracturing process of the well (CMG 2015). On one hand, the most classical paper on naturally fractured reservoirs was introduced by Warren and Root ( 1963 ) who presented a model to study the characteristic behavior of a porous .Schlagwörter:Yan Jin, Kang Ping Chen, Mian ChenPublish Year:2015well section develops stress trajectory patterns near the wellbore with an elliptical region through the neutral points outlining a so-called fracture cage (Figure 11 c), with the elliptical .In this paper, a triple-porosity dual-permeability model is developed for simulating the flow mechanism of shale gas. The wells were completed using plug-and-perf completion and were hydraulically fractured using a zipper fracturing pattern in three-well layout for 41 stages in total. A new analytical expression is derived to model the flow through natural fractures with .Schlagwörter:Hydraulically Fractured WellsPressure
As hydraulic fracturing technology has been widely used in practices, drilling a fractured horizontal well (FHW) is a common measure to improve the ultimate . The fracturing of horizontal wells has recently gained wide acceptance as a viable completion option to maximize the return on investment.In the present study, considering the geometry of the fracture, a new semi-analytical model for hydraulically fractured wells in the shale gas reservoirs and tight . The applied flow model is based on complex analysis methods, which can quantify the flow near the fractures, and being gridless, is computationally faster than traditional discrete volume .Data relevant for modeling multiphase gas and water flow in shale gas formations are collated from diverse sources.Schlagwörter:Hydraulic Fracturing WellHorizontal Well FracturingPublish Year:2019
Well Test Analysis for Hydraulically-Fractured Wells
The focus of this study is to investigate the effect of well orientation on the gas production from hydraulically fractured wells in shale formations that contain .In using hydraulically fractured wells for aggressive reservoir exploitation, the spacing of vertical wells and/or transverse fractures in long horizontal wells becomes quite an important . The dynamics of the water phase within fractures is controlled by many mechanisms, such as relative permeability, .Lateral sections of the wells T-1, T-3, and T-5 are within the lower Eagle Ford formation at approximately 3292 m. • Key factors include orientations of maximum principal .Utilizing the discrete fracture model (DFM), a transient flow model is established for fractured horizontal wells in tight oil reservoirs, accounting for threshold . A systematic verification is conducted to ensure the validity .Production from a hydraulically fractured well involves two flow regions, the flow from the reservoir to the fracture, and the flow along the fracture into the wellbore. average fracture half-length and spacing and estimate .The fractures are essential to the recovery and performance of tight reservoirs wells.Berumen and Tiab ( 1996) and Pedroso and Correa ( 1997) modeled the pressure behavior of a fractured vertical well with stress-sensitive conductivities by .054 Reference: PETROL 4544 To appear in: Journal of Petroleum Science and Engineering Received Date:25 July 2017Schlagwörter:Hydraulically Fractured WellsHydraulic Fracturing WellThese two issues: (1) naturally fractured reservoirs and (2) hydraulically fractured wells were originally separated from the well testing point of view.
The model is fully analytical and hence it is convenient to be applied to . This model is solved using the finite-volume method (FVM), and an . Maximizing the total .This chapter focuses on the application of Tiab’s direct synthesis (TDS) technique for practical and accurate interpretation of pressure tests on vertical wells in . The elliptic coordinates ( ξ, θ) are defined by: (12) x ( ξ, θ) = x f cosh ξ cos θ y ( ξ, θ) = x f sinh ξ sin θ.These days, hydraulic fracturing is widely applied in the gas reservoir development with low permeability, which can improve the production of the well and .Macrolithotypes control the pore-fracture distribution heterogeneity in coal, which impacts stimulation via hydrofracturing and coalbed methane (CBM) production in the reservoir. A new model is developed that calculates the productivity of a hydraulically fractured well, including the effect of fracture-face damage caused by fluid leakoff. Consider, for example, the stabilized flow regime, which corresponds to the steady-state solution of the governing equations for the motion of the reservoir fluid.
, 2013) with complex fracture patterns have been investigated extensively, there is a lack of understanding of pressure transient behaviors for hydraulically fractured vertical wells with fishbone . The determination of optimal well pattern and well spacing in such a system is the key parameter for higher well productivity and optimized CBM field development plan. The SRV is characterised by Warren-Root dual-porosity model. Flow equations under the streamline method. Accordingly, appropriate analytical pressure-transient models and analysis procedures are provided to determine fracture properties, i.Schlagwörter:Publish Year:2018Fracture Linear FlowFreddy Humberto Escobar Currently, the application of FMM–based simulation has been limited to using tartan grids to model the hydraulic fractures (HFs). In this study, well pattern and .Reservoir drainage towards producer wells in a hydraulically and naturally fractured reservoir is visualized by using an analytical streamline simulator that plots streamlines, time-of-flight contours and drainage contours based on complex potentials.This paper presents an analytical model for fractured horizontal wells in anisotropic closed or semi-infinite, homogenous or naturally .For the hydraulically fractured horizontal wells, the fluid movement in the formation is generally described by multilinear flow.Schlagwörter:Hydraulic Fracturing WellHorizontal Well Fracturing Without assigning the fracture .The analytical solution for a hydraulically fractured well with finite conductivity fracture in a multiwell system with well interference is presented based on the superposition principle, the early-time approximate solutions of trilinear flow and the infinite-conductivity fracture model. Recently, fast–marching–method (FMM) –based flow simulation has shown great promise for rapid modeling of unconventional oil and gas reservoirs.In hydraulically fractured and anisotropic CBM reservoirs, pressure propagation and resulting drainage area is in elliptical geometry.From a fluid mechanics point of view, fluid production from a hydraulically fractured well involves two flow regions: the flow from the reservoir to the fracture and .Then a numerical model is utilized to simulate the whole well flow regimes and pressure transient characteristics of multiple fractured horizontal wells.
Machine learning-based fracturing parameter optimization for
To this end, the theoretical .Utilizing the discrete fracture model (DFM), a transient flow model is established for fractured horizontal wells in tight oil reservoirs, accounting for threshold pressure gradient (TPG), stress sensitivity effect, hydraulic fracture parameters, and fracture distribution pattern. Thus, an accurate forecast of the . In this paper, a rectangular composite model of a tight gas reservoir was established to describe a fractured well with an SRV.Schlagwörter:Fractured WellsAcademic PublishingGrid SimulationsIn this paper, we present efficient numerical methods to handle both long-term well performance and transient behavior simulations for hydraulic fractured wells in .168) Pub Date : 2017-12-20, DOI: 10.Autor: Leng Tian, Leng Tian, Daoyong Yang, Sixu Zheng, Bo Feng The existing models assume either .Even though well testing characteristics of vertical wells and horizontal wells (Craig and Blasingame, 2006, Restrepo and Tiab, 2009, Zhou et al. The solution is obtained by Green’s and source functions.The results reveal that the interporosity flow coefficient, storativity ratio, natural-fracture permeability anisotropy, and reservoir size play significant roles on the . Different lengths and widths of network .
Optimization of hydraulically fractured well configuration in
Schlagwörter:Hydraulically Fractured WellsShanshan Yao, Fanhua Zeng, Hong LiuSchlagwörter:Horizontal Well FracturingShale GasHydraulic FracturingAn analytical well test model for hydraulically fractured wells with changing conductivity in stratified reservoirs has been presented. The use of tartan grids adversely impacts the . Key factors include orientations of maximum principal .Parametric optimization of vector well patterns for hydraulically fractured horizontal wells in tight sandstone reservoirs Journal of Petroleum Science and Engineering ( IF 5.
Furthermore, a procedure for optimization of CBM .
This is especially true in the case of tight formations. The development of fluid . Results of the new model are compared with three previous models (McGuire and Sikora 1960; Prats 1961; Binder and Raymond 1967).
The reservoir flow .Schlagwörter:Hydraulic Fracturing WellPublish Year:2018Cited By:45A generalized framework is developed to optimize vector well patterns in tight sandstone reservoirs.It is concluded that, based on the requirement of balanced depressurization, the rectangular or diamond shaped pattern is the best pattern for hydraulically-fractured .Hydraulic fracturing in shale formations containing natural fractures can lead to complex and branched fracture networks which may fail to efficiently access .This article is a synopsis of paper SPE 65156,Integrated Downhole Monitoring of Hydraulically Fractured Production Wells, by Matt Bell, SPE, and Hans Kraaijevanger, SPE, Petroleum Development Oman LLC, and Christophe Maisons, Magnitude, originally presented at the 2000 SPE European Petroleum Conference, ., & Ertekin, T.Schlagwörter:Hydraulically Fractured WellsShale GasPublish Year:2019
Analytical solution and mechanisms of fluid production from
Parametric optimization of vector well patterns for hydraulically fractured horizontal wells in tight sandstone reservoirs Leng Tian, Daoyong Yang, Sixu Zheng, Bo Feng PII: S0920-4105(17)31011-2 DOI: 10. introduced the classical trilinear model, whose analytical solution provides the information of the pressure transient response of 1-D flow in three regions: hydraulic fractures, the stimulated reservoir region .
Schlagwörter:Fractured WellsMarkersSchlagwörter:Fractured WellsPublish Year:2020Design and life cycle considerations for unconventional reservoir wells.Multiple transverse hydraulic fractures are generated when all wellbores are drilled in the direction of the minimum horizontal stress.The dynamics of the water phase within the created hydraulic fractures and reactivated natural fractures (induced fractures) has significant impact on both short- and long-term performance of a hydraulically fractured well. The log data were used for one of the parameters used .Schlagwörter:Publish Year:2018Leng Tian, Leng Tian, Daoyong Yang, Sixu Zheng, Bo FengSchlagwörter:Hydraulically Fractured WellsMultiple Fractured Horizontal Wells Google Scholar Osholake, T.The analytical solution for a hydraulically fractured well with finite conductivity fracture in a multiwell system with well interference is presented based on .
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