Results 11 to 20 of about 5,239 (198)

Mechanism of Borehole Stability in Fractured Formation With Discrete Fracture Network

open access: yesEnergy Science & Engineering
Due to the high degree of rock block dispersion and the extensive development of natural fractures in the fractured formation, the drilling fluid loss and wellbore instability accidents occur frequently during the drilling process.
Shuxin Dong   +4 more
doaj   +2 more sources

Wellbore Instability Prediction by Geomechanical Behavioral Modeling in Zilaie Oil Field [PDF]

open access: yesJournal of Petroleum Science and Technology, 2023
Wellbore instability is a critical problem during oil and gas reservoirs’ drilling and production phase, for which analytical, numerical, experimental, and field methods have been widely discussed.
Amin Tohidi   +2 more
doaj   +1 more source

Integrated 3D Mechanical Earth Modelling to Intensively Investigate the Wellbore Instability of Zubair Oil Field, Southern Iraq

open access: yesIraqi Geological Journal, 2021
Wellbore instability in the Zubair oil field is the main problem in drilling operations. This instability of the wellbore causes several problems including poor hole cleaning, tight hole, stuck pipe, lost circulation, bad cementing, and well kick or ...
Abbas Dakhiel
doaj   +1 more source

Experimental validation of multiphase flow models and testing of multiphase flow meters: A critical review of flow loops worldwide [PDF]

open access: yes, 2016
Around the world, research into multiphase flow is performed by scientists with hugely diverse backgrounds: physicists, mathematicians and engineers from mechanical, nuclear, chemical, civil, petroleum, environmental and aerospace disciplines ...
Bello, O. O.   +2 more
core   +4 more sources

Analysis of Wellbore Stability considering the Interaction between Fluid and Shale

open access: yesGeofluids, 2023
Reservoir shale has the characteristics of bedding planes, strong anisotropy, and strong imbibition ability under ultralow water saturation, which has an important impact on wellbore stability of horizontal wells.
Long Chang   +7 more
doaj   +1 more source

Experimental Study of Wellbore Instability in Clays [PDF]

open access: yesJournal of Geotechnical and Geoenvironmental Engineering, 2011
This paper presents the results of an extensive program of laboratory model wellbore tests that have been performed to study wellbore instability in saturated clays. The tests were conducted on resedimented Boston blue clay (RBBC) anisotropically consolidated to vertical effective stresses up to 10 MPa by using two custom-built thick-walled cylinder ...
Abdulhadi, Naeem O.   +2 more
openaire   +3 more sources

Prediction of the lifespan of cement at a specific depth based on the coupling of geomechanical and geochemical processes for CO2 storage [PDF]

open access: yes, 2019
The injection of carbon dioxide (CO2) captured from combustion-based processes into underground formations is one of a number of plausible methods to reduce its release into the atmosphere and consequential greenhouse gas warming.
Bagheri, Mohammadreza   +2 more
core   +1 more source

Assessment of zonal isolation risk to changes in design parameters [PDF]

open access: yes, 2017
The Well Containment Screening Tool (WCST) focuses on well integrity evaluation after well control incident. The WCST favors a greater wall thickness and, hence, a narrower cementing annulus, potentially increasing the risk of cement loss.
Zhang, Huidong, active 21st century
core   +1 more source

An Investigation of Wellbore Instability in Problematic Formations from Eridu Oil Field, Southern Iraq

open access: yesIraqi Geological Journal, 2023
Wellbore instability is a main challenge and contribute to suspending the drilling operations that lead to over-well time, known as Non-productive time (NPT).
Ahmed Kareem, Faleh Almahdawi
doaj   +1 more source

Development of configurational forces during the injection of an elastic rod [PDF]

open access: yes, 2015
When an inextensible elastic rod is 'injected' through a sliding sleeve against a fixed constraint, configurational forces are developed, deeply influencing the mechanical response.
Bigoni, D.   +3 more
core   +3 more sources

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