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1-20 of 79
Keywords: wellbore stability
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Proceedings Papers
Transient Effects of Time-Dependent Drilling Fluids on Wellbore Stability
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0426
...-dependent rheology of gelled fluid. The hydraulic model is then coupled with a wellbore stability model to study the effect of dynamic pressures on wellbore integrity. The method of characteristics is employed to solve the governing equations of the hydraulic model. Failure analysis is performed to evaluate...
Proceedings Papers
Numerical Simulation of Wellhole Stability in Cretaceous Fractured Water-Sensitive Formation in Tarim Basin
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0477
... fluid density, fracture permeability, number of fractures and drilling fluid immersion time on the wellbore stability. The results show that: (1) increasing density is beneficial to improve the wellbore stability at the early stage; (2) with the increase of the fracture permeability, the wellbore state...
Proceedings Papers
A Statistical Approach to Estimate the Drilling Mud Window Based on Field Data and Ten Failure Criteria in Depleted Reservoirs - New Modified Failure Criterion
Available to PurchaseAhmed Alsubaih, Kamy Sepehrnoori, Alberto Lopez Manriquez, D. Nicolas Espinoza, H. Raed Allawi, Swadi Hayfaa
Publisher: American Rock Mechanics Association
Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0799
..., drilling operations cost more than eight million dollars due to wellbore instability problems (Peng & Zhang, 2007), which wastes 10 percent of the wells budget (Aadnoy & Ong, 2003). Therefore, the main stages of well planning depend on wellbore stability (Bell & Gough, 1979). Thus, to avoid...
Proceedings Papers
Study on the Mechanism of Wellbore Stability and Drilling Fluid Technology Countermeasures in Ultra-Deep Composite Salt Formations in the Tarim Basin
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0052
... and rock mechanical strength, and elucidated the control mechanism of wellbore stability of composite salt rock; experiments were carried out on the dissolution rate and creep characteristics of salt rock, and a model for characterizing the density and chlorine content of drilling fluids for maintaining...
Proceedings Papers
Study on Wellbore Stability of the Intrusions in Manshen Block, Tarim Basin
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0042
... the plugging property has great influence on the wellbore stability. The research achievements are helpful to guide similar strata to improve wellbore instability. 1. INTRODUCTION As global energy consumption continues to increase, achieving efficient development of deep and ultra-deep resources has become...
Proceedings Papers
Discrete Element Analysis of Wellbore Stability Mechanisms in Broken Formations
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0843
... ABSTRACT: Clarifying the mechanism of wellbore stability in broken formations is crucial due to the discontinuous deformation and stress characteristics of such rocks. Conventional continuum-based rock mechanics methods need to be improved for these formations. The discrete element method (DEM...
Proceedings Papers
Study on the Mechanism of Wellbore Stability and Drilling Fluid Technology Countermeasures in the Ultra-Deep Fractured Formation of Southwest Tarim Depression
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0838
... is clarified, a suitable calculation model of wellbore stability is established, and a reasonable safe drilling fluid density window is proposed. Technical countermeasures of drilling fluid are put forward from the perspective of engineering geomechanics. The results show that the ultra-deep fractured...
Proceedings Papers
Study on the Mechanism of Wellbore Instability in Complex Shale Formations Considering Fault Influence: A Case Study of Fushan Oilfield
Available to PurchaseXing Yu, Haizhu Wang, Tongyao Liang, Qirui Huang, Xuhao Fan, Yunpeng Zhang, Bin Wang, Sergey Stanchits, Alexey Cheremisin
Publisher: American Rock Mechanics Association
Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0886
... ABSTRACT: Fault is the main controlling factor of wellbore stability in multi-layer complex fault block reservoirs. For a long time, the industry has not clearly understood the mechanism, and the wellbore stability design has not fully considered the fault factors, and the effect of the anti...
Proceedings Papers
Development and Validation of a New Wellbore Stability Prediction Model for Complex Reservoirs: Application to the Keshen Gas Field in the Tarim Basin
Available to PurchaseYingjun Liu, Chenggang Xian, Hui Zhang, Guoqing Yin, Ke Xu, Zhimin Wang, Shujun Lai, Jingrui Liang, Ziwei Qian
Publisher: American Rock Mechanics Association
Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0105
... ABSTRACT: The objective of this paper is to propose a new method for predicting the safe mud density window of drilling fluid in the Keshen gas field, located in the Tarim Basin. The study focuses on applying this method to analyze wellbore stability in the complex and high-pressure...
Proceedings Papers
A Graph-Based Drained Wellbore Stability Analysis in Mohr-Coulomb Rock Formation Under Hydrostatic in Situ Stress Field
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0097
... the rock formation. Wellbore stability must be maintained during both wellbore drilling and the well construction phase to support the structural integrity an oil and gas well. In the wellbore drilling, the rock mass inside the circular borehole is relaxed progressively and removed eventually, which...
Proceedings Papers
Borehole Stability Analysis for an Injection Well in Superhot Rock Drilled with Millimeter Wave Technology
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-1166
... that are likely limited in producible fluids. Among the other challenges associated with in-situ HPHT environments, the injection of lower-temperature water imposes further complexity on the stress conditions due to dynamic thermomechanical interactions. Understanding its influence on wellbore stability...
Proceedings Papers
A Four-Pressure Profile Prediction Method for Horizontal Wells in Conglomerate Formations
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0333
... the collapse, leakage and rupture pressure of discontinuous conglomerate formation with strong heterogeneity and random distribution of gravel. Therefore, in order to improve the drilling wellbore stability in conglomerate formations, it is necessary to propose a new method to accurately predict the pre...
Proceedings Papers
Application of Artificial Intelligence in Prediction of Wellbore Stability Using Well Logging and Drilling Data
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0598
... progress and increasing the cost of the drilling operation. Conventional wellbore stability prediction relies on some deterministic physical models, involving some empirical coefficients which are difficult to determine and often dependent on field experience. In addition, some complex factors...
Proceedings Papers
Impact of Drilling Mud Intrusion on Borehole Stability in Naturally Fractured Rocks: A Coupled DEM-DFN Investigation
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0050
..., and failure criteria (Zhao et al., 2012; Mansourizadeh et al., 2016; Liu et al., 2021; Li et al., 2019; Zhang et al., 2020; Li et al., 2022; Aslannezhad et al., 2021). Both theoretical and field data have indicated that an appropriate increase in mud weight does benefit wellbore stability in continuous media...
Proceedings Papers
Wellbore Stability Analysis of Poroelastic Media Based on Reliability Analysis Theory
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0886
... ABSTRACT Wellbore stability is often affected by the randomness and ambiguity of geomechanical parameters. Finding an effective method to analyze the borehole instability subjected to uncertainties can help improve the borehole collapse and drilling-induced tensile fracture prediction...
Proceedings Papers
Wellbore Stability Analysis of Inclined Shale Wells Using a Fully Anisotropic Hydraulic-Mechanical Coupled FEM Model
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0122
... ABSTRACT Shale rock is typically anisotropic in both elasticity and strength, but traditional wellbore stability models generally assume that shale rock is isotropic or partially anisotropic, and the influence of hydraulic-mechanical coupling is usually ignored, so the effect of arbitrary...
Proceedings Papers
Study on the Dynamic Change Law of Collapse Pressure in Mudstone Strata-Taking Block D as an Example
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0125
... geological subdiscipline mechanical parameter reservoir section borehole coefficient drilling fluid mudstone collapse pressure invasion time drilling fluid invasion time drilling fluid chemistry wellbore stability drilling fluid intrusion mudstone section engineering rock mechanical parameter...
Proceedings Papers
Development of a Wellbore Stability Prediction Model Using Multiple Regression with Missing Core Samples: A Case Study of the Shunbei Oil and Gas Field
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0257
... ABSTRACT The Shunbei oil and gas field, characterized by its intricate deep fault-karst reservoirs and fractured carbonate lithology, presents formidable challenges to wellbore stability during drilling and completion phases, precipitating adverse events such as wellbore collapse and fluid...
Proceedings Papers
Experimental Investigations of Composite Halite Core with a Hard Rock Creep Behavior
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0068
... ABSTRACT: Rock salt, mainly comprised of NaCl, exhibits inherent softness and has a good rheology property, resulting in complex creep patterns and fracture evolution for wellbore stability. They are, even coming from underground, facing weathering and dissolution & precipitation process...
Proceedings Papers
Fully Coupled Thermo-Hydro-Mechanical Model for Wellbore Stability Analysis of a CBM Horizontal Well
Available to PurchasePublisher: American Rock Mechanics Association
Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0190
...) coupling effect and coal shrinkage induced by methane desorption that happened in the underbalanced condition. However, most previous studies ignored the influence of T-H-M coupling and coal shrinkage on wellbore stability. Therefore, a fully coupled T-H-M model with local thermal equilibrium condition...
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