Theoretical Test Case of the Injection of 100,000 t of CO2 into the Altmark Depleted Gas Field

Abstract. Fluid extraction from producing hydrocarbon reservoirs can cause anthropogenic land subsidence. In this work, a 3-D finite-element (FE) geomechanical model is used to predict the land surface displacements above a gas field where displacement observations are available. An ensemble-based data assimilation (DA) algorithm is implemented that incorporates these observations into the response of the FE geomechanical model, thus reducing the uncertainty on the geomechanical parameters of the sedimentary basin embedding the reservoir. The calibration focuses on the uniaxial vertical compressibility cM, which is often the geomechanical parameter to which the model response is most sensitive. The partition of the reservoir into blocks delimited by faults motivates the assumption of a heterogeneous spatial distribution of cM within the reservoir. A preliminary synthetic test case is here used to evaluate the effectiveness of the DA algorithm in reducing the parameter uncertainty associated with a heterogeneous cM distribution. A significant improvement in matching the observed data is obtained with respect to the case in which a homogeneous cM is hypothesized. These preliminary results are quite encouraging and call for the application of the procedure to real gas fields.

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A gravity-driven runoff and erosion model for sediment transfers at the catchment scale

E3S Web of Conferences ◽

10.1051/e3sconf/20184004019 ◽

2018 ◽

Vol 40 ◽

pp. 04019 ◽

Cited By ~ 2

Author(s):

Florent Taccone ◽

Germain Antoine ◽

Olivier Delestre ◽

Nicole Goutal

Keyword(s):

Numerical Code ◽

Test Case ◽

Catchment Scale ◽

Erosion Model ◽

New Model ◽

Infiltration Model ◽

Mountain Watersheds ◽

Hydraulic Network ◽

Gravity Driven ◽

Theoretical Test

The aim of this work is to simulate hydraulic transfers and upstream erosion sources in steep and erodible mountain watersheds with a physicallybased hydraulic model. In such environments, immature debris flows and shallow landslides can be the largest sources of sediments transported at the outlet. To simulate these phenomena, a gravity-driven erosion model and a 1D vertical infiltration model have been developed in the TELEMAC 2D numerical code. In this new erosion model, the motion of the granular flow is described with a fully dynamic system and a Coulomb-like bottom friction treatment, more adapted to the properties of the flow. The new model is first qualitatively evaluated on a theoretical test case: a steep plot with a slope break is used to evaluate the erosion and deposition dynamics of a single immature debris flow. Then, the model is confronted to field data on a real catchment (Draix, in the Southern French Alps). First, the infiltration model is successfully calibrated in order to simulate two different rain events. Then, the new erosion model is applied at the catchment scale. The numerical results show a very realistic behavior compared to the field observation, providing erosion in the upper parts of the hillslopes and deposition in the hydraulic network. This work opens promising perspectives, for example by coupling this new model with a classical and complementary velocity-driven model for the erosion, deposition and transfers in the hydraulic network.

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Comparison of heat tracer models in the estimation of upward flux through streambed sediments

Hydrology and Earth System Sciences Discussions ◽

10.5194/hessd-9-4305-2012 ◽

2012 ◽

Vol 9 (4) ◽

pp. 4305-4332 ◽

Cited By ~ 1

Author(s):

M. Shanafield ◽

C. L. Shope ◽

W. A. McKay

Keyword(s):

Numerical Model ◽

Water Movement ◽

Winter Season ◽

Analytical Models ◽

Test Case ◽

Groundwater Temperature ◽

Order Of Magnitude ◽

Theoretical Test ◽

Streambed Sediments ◽

Heat As A Tracer

Abstract. Although many studies examine the use of heat as a tracer to determine vertical infiltration of water into the streambed, few consider the case where both water and heat flow (advection and conduction) are in the upwards direction. In this study, we compare the usefulness of both a one-dimensional numerical model and two analytical solutions for the case where water movement is upwards and the (flat) groundwater temperature is greater than the diel temperatures at the surface. We first create a theoretical test case to compare expected temperature traces at various depths within the sediment column for each model both in the presence and absence of a vertical temperature gradient. These theoretical results are discussed in light of the assumptions inherent in the models. Then the models are applied to a study area located along a reach of the Truckee River in Nevada, USA, during the winter season and flux estimates both between models and between sensor depths are compared. Our results show that despite violation of some assumptions inherent in the analytical models, flux estimates over the entire vertical streambed column can be within one order of magnitude of the numerical model under some conditions. Further, predictions of downwards flux obtained using only the shallow sensors highlight the need to consider the physical processes to be measured when choosing sensor depth, especially when advection and conduction are upwards.

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Religious Melancholy in the Romantic Period: William Cowper as Test Case

Romanticism ◽

10.3366/e1354991x09000622 ◽

2009 ◽

Vol 15 (2) ◽

pp. 144-155 ◽

Cited By ~ 1

Author(s):

Jane Darcy

Keyword(s):

Test Case ◽

Romantic Period ◽

William Cowper

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From Hard Money to Branch Banking

California History ◽

10.1525/ch.2016.93.1.26 ◽

2016 ◽

Vol 93 (1) ◽

pp. 26-44

Author(s):

Larry Schweikart ◽

Lynne Pierson Doti

Keyword(s):

West Coast ◽

Financial Sector ◽

Gold Rush ◽

Test Case ◽

The West ◽

Branch Banking

In Gold Rush–era California, banking and the financial sector evolved in often distinctive ways because of the Gold Rush economy. More importantly, the abundance of gold on the West Coast provided an interesting test case for some of the critical economic arguments of the day, especially for those deriving from the descending—but still powerful—positions of the “hard money” Jacksonians.

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CHARACTERISTICS OF GAS ACCUMULATION IN A LESS EFFICIENT TIGHT-GAS RESERVOIR, HE 8 INTERVAL, SULIGE GAS FIELD, ORDOS BASIN, CHINA

Геология и геофизика ◽

10.15372/gig20160706 ◽

2016 ◽

Keyword(s):

Ordos Basin ◽

Tight Gas ◽

Gas Reservoir ◽

Gas Field ◽

Gas Accumulation ◽

Tight Gas Reservoir

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THE ANYUE GIANT GAS FIELD IN THE SICHUAN BASIN AS THE LARGEST GAS FIELD IN MARINE CARBONATE DEPOSITS FROM DOMESTIC CHINA

Russian Geology and Geophysics ◽

10.15372/rgg2020127 ◽

2020 ◽

Keyword(s):

Sichuan Basin ◽

Gas Field ◽

Marine Carbonate ◽

The Sichuan Basin ◽

Carbonate Deposits

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Biblical Literacy and the English King James Liberal Bible

Postscripts The Journal of Sacred Texts and Contemporary Worlds ◽

10.1558/post.v7i2.197 ◽

2014 ◽

Vol 7 (2) ◽

pp. 197-211

Author(s):

James Crossley

Keyword(s):

Cultural Heritage ◽

Test Case ◽

Biblical Literacy ◽

The Public ◽

Public Arena ◽

The Bible ◽

Liberal Capitalism ◽

The Rich ◽

Popular Nationalism ◽

King James Bible

Using the 400th anniversary of the King James Bible as a test case, this article illustrates some of the important ways in which the Bible is understood and consumed and how it has continued to survive in an age of neoliberalism and postmodernity. It is clear that instant recognition of the Bible-as-artefact, multiple repackaging and pithy biblical phrases, combined with a popular nationalism, provide distinctive strands of this understanding and survival. It is also clear that the KJV is seen as a key part of a proud English cultural heritage and tied in with traditions of democracy and tolerance, despite having next to nothing to do with either. Anything potentially problematic for Western liberal discourse (e.g. calling outsiders “dogs,” smashing babies heads against rocks, Hades-fire for the rich, killing heretics, using the Bible to convert and colonize, etc.) is effectively removed, or even encouraged to be removed, from such discussions of the KJV and the Bible in the public arena. In other words, this is a decaffeinated Bible that has been colonized by, and has adapted to, Western liberal capitalism.

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