Numerical investigation of hydraulic fracture deflection in large-angle oblique horizontal wells with staged multi-cluster fracturing

Wang, Xiaohua; Zhang, Fengshou; Tang, Meirong; Du, Xianfei; Hou, Bing; Tang, Jizhou

doi:10.1016/j.geoen.2023.211436

Cited by 12 publications

(5 citation statements)

References 80 publications

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“…, 2018; Wang and Liu, 2022, 2023; Wang et al. , 2023a, b, c). The researches have provided the direct evidence about the applicability of the method to the simulation of the multistage hydrofracturing of horizontal wells in shale reservoirs, and the effectiveness of the method and program for solving hydraulic fracturing problems is verified.…”

Section: Numerical Models and Cases Of Multi-well Hydrofracturingmentioning

confidence: 99%

“…Under different well spacing, the contact slip events caused by fracturing is obviously smaller than the damage events caused by hydraulic fracturing (Wang et al. , 2023a, b, c).…”

Section: Introductionmentioning

confidence: 97%

“…With the increase of well spacing, the effect of fracturing-induced stratal movement and squeezing deformation decrease (Wang et al. , 2023a, b, c). With the increase of well spacing, the pressure derivative of transition flow becomes smaller and the start time is gradually delayed.…”

Section: Introductionmentioning

confidence: 99%

“…At the same time, increasing the fluid injection rate can delay the deflection of the hydraulic fracture and extend the propagation distance along the fracture (Wang et al. , 2023a, b, c). Related to the injection rate, the longer the oil production time of the parent well, it will also lead to fracture.…”

Section: Introductionmentioning

confidence: 99%

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Frac-hits and connections of multi-well hydrofracturing fracture network involving the variable factors: well spacing, perforation cluster spacing and injection rate

Wang,

Li,

Liu

2024

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PurposeWith the development of fracturing technology, the research of multi-well hydrofracturing becomes the key issue. Frac-hits in multi-well hydrofracturing has an important effect on fracture propagation and final production of fractured well; in the process of hydrofracturing, there are many implement parameters that can affect frac-hits, and previous studies in this area have not systematically targeted the influence of a single parameter on multi-well hydrofracturing. Therefore, it is of great significance to study the occurrence rule and influence of frac-hits for optimizing the design of fracturing wells.Design/methodology/approachBased on the proposed numerical models, the effects of different fracturing implement parameters (perforation cluster spacing, well spacing and injection rate) on frac-hits are compared in numerical cases. Through the analysis of fracture network, stress field and microseismic, the effects of different fracturing implement parameters on frac-hits and connections are compared.FindingsThe simulation results show that the effect of perforation cluster spacing and well spacing on frac-hits is greater than that of injection rate. Smaller well spacing makes it easier for fractures between adjacent wells to interact with each other, which increases the risk of frac-hits and reduces the risk of fracture connections. Smaller perforation cluster spacing results in larger individual fracture lengths and greater deflection angles, which makes the possibility of frac-hits and connections greater. The lower the injection rate, the lower the probability of frac-hits.Originality/valueIn this study, the influence of different fracturing implement parameters on frac-hits and connections in multi-well hydrofracturing is studied, and the mechanism of frac-hits and connections is analyzed through fracture network, stress field and microseismic analysis. Different simulation results are compared to optimize fracturing well parameter design and provide reference for engineering application.

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Section: Numerical Models and Cases Of Multi-well Hydrofracturingmentioning

confidence: 99%

“…Under different well spacing, the contact slip events caused by fracturing is obviously smaller than the damage events caused by hydraulic fracturing (Wang et al. , 2023a, b, c).…”

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Frac-hits and connections of multi-well hydrofracturing fracture network involving the variable factors: well spacing, perforation cluster spacing and injection rate

Wang,

Li,

Liu

2024

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“…Archie first defined the classification of rock types as units of rock formed under the same sedimentary conditions. He experienced comparable diagenesis leading to a relationship between porosity-establishes a powerful and worthwhile procedure for NMR T2 distribution correction in hydrocarbon zone for uncored and partially cored wells 47,48,[56][57][58][59][60][61][62][63][64][65][66][67] . The fuzzy c-means (FCM) technique efficiently solves fuzzy clustering issues.…”

Section: Introductionmentioning

confidence: 99%

Hydraulic flow unit and rock types of the Asmari Formation in the Mansouri oilfield, an application of the Flow zone index and Fuzzy C-means clustering methods

Eftekhari,

Memariani,

Maleki

et al. 2023

Preprint

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Rock types are the reservoir's most essential properties for special facies modeling in a defined range of porosity and permeability. This study used the fuzzy c-means clustering technique to identify rock types in 280 core samples from one of the wells drilled in the Asmari reservoir in the Mansouri field, SW Iran. Four hydraulic flow units were determined for studied data after classifying the flow zone index with histogram analysis, normal probability analysis, and the sum of square error methods. Then two methods of flow zone index and fuzzy c-means clustering were used to determine the rock types in given wells according to the results obtained from the implementation of these two methods in-depth, and continuity index acts, the fuzzy c-means methods with continuity number 3.12 compared to flow zone index with continuity number 2.77 shows more continuity in depth. The relationship between permeability and porosity improved utilizing hydraulic flow unit techniques considerably. This improvement is achieved using the flow zone index method study. So that in the general case, all samples increased from 0.55 to 0.81 in the first hydraulic flow unit and finally 0.94 in the fourth hydraulic flow unit. The samples were characterized by similar flow properties in a hydraulic flow unit. In comparison, the obtained correlation coefficients in the fuzzy c-mean method are less than the general case in all hydraulic flow units. This study aims to determine the flowing fluid in the porous medium of the Asmari reservoir employing the c-mean fuzzy logic. Also, by determining the facies of the rock units, especially the siliceous-clastic facies and log data in the Asmari Formation, the third and fourth flow units have the best flow units with high reservoir quality and permeability. Results can compared to the flow unit determination in other nearby wellbores without cores.

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DEM Modeling of Simultaneous Propagation of Multiple Hydraulic Fractures Across Different Regimes, from Toughness- to Viscosity-Dominated

Li,

Zhang,

Wang

et al. 2023

Rock Mech Rock Eng

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Numerical investigation of hydraulic fracture deflection in large-angle oblique horizontal wells with staged multi-cluster fracturing

Cited by 12 publications

References 80 publications

Frac-hits and connections of multi-well hydrofracturing fracture network involving the variable factors: well spacing, perforation cluster spacing and injection rate

Frac-hits and connections of multi-well hydrofracturing fracture network involving the variable factors: well spacing, perforation cluster spacing and injection rate

Hydraulic flow unit and rock types of the Asmari Formation in the Mansouri oilfield, an application of the Flow zone index and Fuzzy C-means clustering methods

DEM Modeling of Simultaneous Propagation of Multiple Hydraulic Fractures Across Different Regimes, from Toughness- to Viscosity-Dominated

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