Results 71 to 80 of about 11,928 (225)

Effect of single straight, intersecting and T-shaped natural fractures on horizontal wellbore stability in shale reservoirs

open access: yesJournal of Petroleum Exploration and Production Technology
The development of natural fractures can easily lead to horizontal wellbore instability caused by stress concentration after drilling in shale reservoirs, which is not conducive to the safe development of shale gas, but how different natural fractures ...
Xiaoming Wang   +3 more
doaj   +1 more source

Large‐Scale Hydrogen Storage: Surface and Subsurface Challenges

open access: yesChemBioEng Reviews, Volume 13, Issue 2, April 2026.
This review examines underground hydrogen storage with emphasis on the interaction between surface facilities and subsurface reservoirs. Variable renewable hydrogen requires compression, buffering, and purification before injection, while subsurface processes influence wellhead pressure, temperature, and composition.
Mostafa Montazeri   +3 more
wiley   +1 more source

Initial Feasibility Study to Drill and Core the Ocean Mantle [PDF]

open access: yes, 2011
An initial feasibility study (Pilisi and Whitney, 2011) of drilling through the Mohorovičić discontinuity (Moho) into the oceanic mantle specifically focused on future requirements for planning, drilling and coring a hole 500 m into the oceanic mantle ...
Bill Whitney, Nicolas Pilisi
core   +1 more source

Optimal mud pressure design using nonlinear failure criteria for wellbores in shaley sedimentary reservoir

open access: yesDeep Underground Science and Engineering, Volume 5, Issue 1, Page 144-159, March 2026.
The present study uses the Modified Mohr‐Coulomb true‐triaxial failure criterion (MMC_TT), which predicts the strength of rock better than the MGC criterion in laboratory true‐triaxial tests to overcome the limitations. Moreover, based on the data from previously published five vertical wells in the Krishna‐Godavari basin (K‐G basin), an empirical ...
Ravindra K. Burnwal, Aditya Singh
wiley   +1 more source

An overview of hydraulic fracturing and other formation stimulation technologies for shale gas production [PDF]

open access: yes, 2013
The technology of hydraulic fracturing for hydrocarbon well stimulation is not new, but only fairly recently has become a very common and widespread technique, especially in North America, due to technological advances that have allowed extracting ...
GANDOSSI Luca
core   +1 more source

Mechanical property variation mechanisms of granite subjected to real‐time high temperatures and subsequent cooling treatment

open access: yesDeep Underground Science and Engineering, Volume 5, Issue 1, Page 277-295, March 2026.
This study investigates the coupled thermo‐mechanical behavior of granite during heating and cooling through a combination of laboratory tests and finite element analysis. The thermal conductivity, mineral composition, mass loss rate, micro‐crack observation, and thermal fracture characteristics of granite under various temperature conditions are ...
Rui Pang   +8 more
wiley   +1 more source

An overview of hydraulic fracturing and other formation stimulation technologies for shale gas production - Update 2015 [PDF]

open access: yes, 2015
The technology of hydraulic fracturing for hydrocarbon well stimulation is not new, but only fairly recently has become a very common and widespread technique, especially in North America, due to technological advances that have allowed extracting ...
GANDOSSI Luca, VON ESTORFF Ulrik
core   +1 more source

Study on the Law of Multi‐Fracture Propagation in Different Fracturing Fluid Viscosity

open access: yesEnergy Science &Engineering, Volume 14, Issue 3, Page 1339-1352, March 2026.
Samples and equipment Sample preparation Test equipment Analysis of test results Fracture propagation morphology Influence of fracturing fluid viscosity on crack initiation time/(fracture initiation pressure) Evolution law of injection pressure Cumulative relation curve of pressure–time–acoustic ABSTRACT Using the TCHFSM‐I large‐scale accurate triaxial
Zhixing Zhang   +4 more
wiley   +1 more source

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