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Keywords: leakage
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Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0439
... ABSTRACT: The Gulf of Mexico (GoM) is home to more than 50,000 oil and gas wells with approximately 30,000 wells that are plugged and abandoned leading to concerns of oil and gas leakage where currently, little to no monitoring is performed. The cement used when completing and eventually...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1873
.... reservoir geomechanics failure criteria confinement Engineering Upstream Oil & Gas criterion international journal Reservoir Characterization strength Mining Science boundary shear strength Rock mechanics leakage Hoek failure envelope fracture Byerlee Mogi low confinement 1...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1872
... ABSTRACT: In order to solve the problem that how far the horizontal extended-reach well can extend in carbonate formations, three kinds of extension limit prediction models in carbonate formations are established based on three types of leakage pressure, including fracturing leakage, fracture...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0265
... facilities and assessed leakage or failure mechanisms along with their degree of severity, in part to inform risk-based assessments of subsurface geologic storage of fuels and wastes (such as carbon dioxide). This paper summarizes the past occurrences and several hundred others of varying severity (from...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-100
... leakage through a leaking fault. Introduction In the past years, several novel approaches to reduce CO 2 emissions in the atmosphere have been proposed by the scientific community. Storing CO 2 in the subsurface is considered one of the most promising method to decrease the rate of increasing CO 2...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-736
... Abstract: Although methane leakage from oil and gas wells has received significant attention in the last thirty years, emission estimates still range between 1-9% of production. In more recent years methane leakage has been under scrutiny by industry, governments and the public. Methane...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-228
... Ehime prefecture in Japan (Figure 1). In the borehole tests, threshold pressure, that is the capillary pressure at onset of the gas leakage from the test interval, was evaluated at two intervals with different permeability. Whereas in a chamber test, pore pressure around the chamber and water/gas flow...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-358
... transportation rehabilitation tunnel section maintenance leakage deformation corrosion china excavation reservoir characterization defect transverse deformation rail transportation longitudinal deformation inspection tunnel inspection tunnel defect construction activity steel bolt tunnel 1...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-569
... Abstract Leakage to the atmosphere of a significant fraction of injected CO 2 would constitute a failure of a geological CO 2 storage project. We present a numerical model that simulates flow and transport of CO 2 into heterogeneous subsurface systems. The model, StoTran, is a flexible...
Proceedings Papers

Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-7753
... bubbles. Their displacement pressure is sufficient to overcome the capillary entry pressure posed by shallow aquifers and thus cause groundwater contamination. casing and cementing casing design Alberta shallow aquifer wellbore annular space leakage casing-head valve cement sheath gas slug...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-246
... the fault. We also show that the effects of the hydromechanical heterogeneities within the reservoir are negligible relative to those between the caprock and the reservoir. fault core variation hydromechanical heterogeneity Upstream Oil & Gas Simulation leakage injection Fault Zone...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-255
..., focusing on short-term integrity of the sealing caprock, and hence of potential leakage of either brine or CO 2 to shallow groundwater aquifers during active injection. We account for a stress/strain-dependent permeability and study the leakage through a fault zone as its permeability changes during a...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-577
... different unit. In the present work we perform a probabilistic assessment of the mechanical deformation caused by the CO 2 injection and the potential for fault leakage and contamination of the producing interval in the adjacent block. For the majority of the cases, in the range of the evaluated parameters...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-148
... correlation operation enhanced recovery leakage water leakage shotcrete contractor Fluid Dynamics specific leakage concrete lining excavation Reservoir Characterization grout take tunnel excavation consumption injection hydropower project Himalaya grout consumption rock mass tunnel...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-221
... estimations, which can result in more confident and meaningful risk assessment and decision making. Artificial Intelligence Reservoir Characterization CO2 capture machine learning subsurface storage Bayesian Inference probability density Simulation leakage porosity consequence equivalent...
Proceedings Papers

Paper presented at the 45th U.S. Rock Mechanics / Geomechanics Symposium, June 26–29, 2011
Paper Number: ARMA-11-537
... 1.0x10 -18 m2 could reduce air leakage to an acceptable leakage rate of less than 1% using an operational pressure range between 5 and 8 MPa at a depth of 100 m. It was also noted that initial saturation of the lining was very important, and air leakage could be effectively prevented when the lining is...
Proceedings Papers

Paper presented at the 45th U.S. Rock Mechanics / Geomechanics Symposium, June 26–29, 2011
Paper Number: ARMA-11-218
... Characterization concrete liner portal phyllite Acknowledgement extensometer Survey Point lining construction Belden Tunnel Upstream Oil & Gas tunnel 2 operation Canyon geologic mapping slope movement siphon leakage tunnel deformation The Belden hydro-electric project of Pacific Gas and...
Proceedings Papers

Paper presented at the 43rd U.S. Rock Mechanics Symposium & 4th U.S. - Canada Rock Mechanics Symposium, June 28–July 1, 2009
Paper Number: ARMA-09-146
... desorption from a large coal volume. These parameters affect the emission rates and ventilation requirements, as well as water inflow into the working environment. Stopping leakage, on the other hand, is a secondary stress dependent factor in estimation of emissions, as convergence of the roof and floor...
Proceedings Papers

Paper presented at the Vail Rocks 1999, The 37th U.S. Symposium on Rock Mechanics (USRMS), June 7–9, 1999
Paper Number: ARMA-99-0593
... INTRODUCTION ABSTRACT: The many hard rock subsea tunnels having been completed along the coast of Norway the last 20 years offer excellent opportunities to study the key factors determining stability and water leakage of such projects. This paper is discussing the issue based on research...
Proceedings Papers

Paper presented at the The 26th U.S. Symposium on Rock Mechanics (USRMS), June 26–28, 1985
Paper Number: ARMA-85-0487-1
... interest. 2 MAJOR LEAKAGES IN TUNNELS Recent articles in the Norwegian tunneling literature describe some dramatic cases of water inflows in tunnels, in connection with a dozen or so recent hydro power developments. LØset (1980) describes inflows of 12-15 mS/minute at a pressure of 2-3 MPa in the Tyrveli...

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