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Now showing items 31-40 of 87
Tortuosity of Tight Rocks
(2022-05)
Tortuosity is a rock property that controls transport processes in porous media. It is essential in advective, diffusive transport and flow of electric current, especially in tight rocks which are characterized by low ...
A DISLOCATION-BASED BOUNDARY ELEMENT METHOD TO MODEL PRESSURIZED FRACTURES
(2019)
A significant portion of hydrocarbon and geothermal resources in the world, and especially in the United States, is unconventional. Some of the unconventional resources have special geological structures so that their ...
EXPERIMENTAL INVESTIGATION OF THE EFFECTS OF ROTATIONAL SPEED AND WEIGHT ON BIT ON DRILLSTRING VIBRATIONS, TORQUE AND RATE OF PENETRATION
(2017-05-12)
Experimental investigation was carried out on an automated drilling rig fabricated for the Drillbotics competition. The effects of rotational speed and weight on bit were observed on drillstring vibrations, torque and rate ...
Bacillus lipopeptide biosurfactants: Purification, structure-activity relationship, and in-situ production in oil reservoirs.
(2006)
Alternatively, biosurfactant activity can be manipulated by formulation of biosurfactant mixtures with different properties. The efficacy of biosurfactants from individual strains, and mixtures of biosurfactants from ...
Drilling Foam Rheology and Hydraulics at High Pressure and Elevated Temperature
(2020-05-08)
Foam has been successfully used as the motive fluid for different operations such as well stimulation, underbalanced drilling, enhanced oil recovery (EOR), cleanout, and acidizing operations in the oil and gas industry. ...
Acoustic anisotropy measurements and calibration of the non-hydrostatic in-situ stresses in a wellbore.
(2007)
The comparison of the static and dynamic stress-strain data (measured from borehole strain gages and velocities) indicates that velocities have to be calibrated according to the rock type to take into account the specific ...
Modeling Multicomponent Gas Flow in Liquids Rich Shales
(2016-05)
Production data acquired from liquids-rich shale reservoirs show a few very interesting trends:
1. A relatively constant gas-oil ratio (GOR) or condensate-gas ratio (CGR) although flowing bottomhole pressures may be below ...
Investigation on the Effect of Drillstring Stiffness on Downscaling Drillstring Vibrations
(2021-05-16)
Drillstring vibrations provide one of the most important challenges to drilling efficiency today. These vibrations can cause many issues such as decreased energy transfer from the to drive to the bit, fluctuating drilling ...
EXPERIMENTAL STUDY OF PROPPANT TRANSPORT IN HORIZONTAL AND DIRECTIONAL WELLS
(2016)
Wellbore cleanouts represent the main application of the coiled tubing (CT) industry. A typical cleanout operation designed to remove solids from the wellbore using stationary circulation method involves tripping the CT ...
Laboratory Characterization of Reservoir Stimulation and Heat Extraction with Application to EGS
(2019-12)
Enhanced or engineered geothermal systems (EGS) could enable extraction of significant geothermal energy from hot relatively dry rock reservoirs. However, issues related to reservoir creation in different type of rocks and ...