Pore pressure prediction from well logs: Methods, modifications, and new approaches

J Zhang - Earth-Science Reviews, 2011 - Elsevier
Pore pressures in most deep sedimentary formations are not hydrostatic; instead they are
overpressured and elevated even to more than double of the hydrostatic pressure. If the …

Borehole stability analysis accounting for anisotropies in drilling to weak bedding planes

J Zhang - International journal of rock mechanics and mining …, 2013 - Elsevier
Borehole instabilities pose significant challenges to drilling and completion operations,
particularly in regions with weak bedding planes and pre-existing fractures where formations …

A review of mathematical modelling approaches to tackling wellbore instability in shale formations

A Ibrahim - Journal of Natural Gas Science and Engineering, 2021 - Elsevier
Drilling through reactive shale formations is normally associated with borehole instability
and is a problem the petroleum industry continues to face every day, with enormous losses …

Geomechanical modeling using the depth-of-damage approach to achieve successful underbalanced drilling in the Gulf of Suez Rift Basin

WK Abdelghany, AE Radwan, MA Elkhawaga… - Journal of Petroleum …, 2021 - Elsevier
Typical oil and gas reservoirs producing in the Gulf of Suez are now extensively depleted in
terms of recovery of conventional resources and display declining production levels and …

A wellbore stability model for formations with anisotropic rock strengths

H Lee, SH Ong, M Azeemuddin, H Goodman - Journal of Petroleum …, 2012 - Elsevier
Shale formations, due to the presence of laminations and weak planes, exhibit directional
strength characteristics. In most conventional wellbore stability analyses, rock formations are …

In-situ stresses controlling hydraulic fracture propagation and fracture breakdown pressure

Y Zhang, J Zhang, B Yuan, S Yin - Journal of Petroleum Science and …, 2018 - Elsevier
In-situ stress impact on hydraulic fracturing is investigated to enhance hydraulic fracturing
performance. Lithology-controlled lower and upper bounds of the horizontal stresses are …

Assessment of pore pressure, wellbore failure and reservoir stability in the Gabo field, Niger Delta, Nigeria-Implications for drilling and reservoir management

OE Agbasi, S Sen, NJ Inyang, SE Etuk - Journal of African Earth Sciences, 2021 - Elsevier
This work investigates a 3400m thick Tertiary succession from the prolific Gabo hydrocarbon
field in the Niger Delta and presents a well-scale geomechanical model to address the pore …

Geomechanical assessment of the lower Turonian AR-F limestone member, Abu Gharadig Field, Egypt: implications for unconventional resource development

S Farouk, S Sen, T Abu-Alam, K Al Kahtany… - Frontiers in Earth …, 2022 - frontiersin.org
This study evaluates the unconventional reservoir geomechanical characteristics of the
Lower Turonian Abu Roash-F (AR-F) carbonates from the Abu Gharadig field, onshore …

Lithology-dependent minimum horizontal stress and in-situ stress estimate

Y Zhang, J Zhang - Tectonophysics, 2017 - Elsevier
Based on the generalized Hooke's law with coupling stresses and pore pressure, the
minimum horizontal stress is solved with assumption that the vertical, minimum and …

Real-time prediction of formation pressure gradient while drilling

A Abdelaal, S Elkatatny, A Abdulraheem - Scientific Reports, 2022 - nature.com
Accurate real-time pore pressure prediction is crucial especially in drilling operations
technically and economically. Its prediction will save costs, time and even the right decisions …