Three-dimensional unified geological model of the Milk River Transboundary Aquifer (Alberta, Canada – Montana, USA)

2015 ◽  
Vol 52 (2) ◽  
pp. 96-111 ◽  
Author(s):  
Marie-Amélie Pétré ◽  
Alfonso Rivera ◽  
René Lefebvre
Keyword(s):  
Sustainable Use ◽  
Three Dimensional ◽  
Geological Model ◽  
Gas Field ◽  
Transboundary Aquifer ◽  
3D Geological Model ◽  
Stratigraphic Framework ◽  
International Boundary ◽  
Geological Units ◽  
International Border

The Milk River Transboundary Aquifer (Canada–USA) has been so intensively used over the 20th century that concerns have risen about the durability of this resource since the mid-1950s. This aquifer actually corresponds to the middle Virgelle Member of the Upper Cretaceous Milk River Formation (called Eagle Formation in Montana). To assess the conditions needed for a sustainable use of the aquifer, a comprehensive and unified portrait of the aquifer is needed across its international boundary. The stratigraphic framework and geometry of geological units on both sides of the international border were thus unified in a 50 000 km2 three-dimensional (3D) geological model. The Virgelle Member is 0–60 m thick and it subcrops near the border and along both sides of the Sweetgrass Arch. It dips away from the subcrop areas in a semi-radial pattern. The Medicine Hat gas field hosted by the Alderson Member (Alberta), which is separated from the other members by a regional unconformity, and the Tiger Ridge gas field near the Bears Paw Mountains (Montana) limit the extent of the aquifer. The unified 3D geological model forms the necessary basis for conceptual and numerical hydrogeological models of the Milk River Aquifer.

scholarly journals Numerical Simulation of Mining-Induced Stress Evolution and Fault Slip Behavior in Deep Mining

2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Zhenhua Jiao ◽  
Lei Wang ◽  
Ming Zhang ◽  
Jiong Wang
Keyword(s):  
Rock Burst ◽  
Underground Mining ◽  
High Stress ◽  
Three Dimensional ◽  
Elastic Strain Energy ◽  
Fault Reactivation ◽  
Reverse Fault ◽  
Geological Model ◽  
Stress Evolution ◽  
3D Geological Model

The ground pressure distributes significant variation in underground mining near fault. Fault reactivation is an important factor to induce the rock burst. Therefore, characterizing geological settings in mining areas by the geological information can improve the accuracy of simulation. To investigate the characteristic of mining stress evolution and reactivation of the F16 reverse fault during the retreat Mining-Induced s in Yima coalfield, a three-dimensional digital elevation model based on GIS platform was applied. The 3D geological model includes three working faces, and F16 fault was constructed by AutoCAD software. Then, the 3D geological model was imported into the FLAC3D code to simulate the potential of mining-induced fault reactivation. The simulation results illustrate that the footwall of F16 fault is a high stress concentration area. Affected by F16 fault and the huge thick gravel rock in the roof, the coal seam near the fault accumulates a large amount of elastic strain energy, which increases the potential of rock burst hazards in the process of mining.

scholarly journals Study on the Construction of 3D Geological Model of Quaternary Loose Sedimentary Strata Based on the Global Stratigraphic Discrete Points

Water ◽  
2022 ◽  
Vol 14 (1) ◽  
pp. 75
Author(s):  
Jixiang Zhu ◽  
Yan Lu ◽  
Guanghui Zhang ◽  
Xiaoyuan Zhou ◽  
Guangjun Ji
Keyword(s):  
Spatial Variation ◽  
Control Point ◽  
Three Dimensional ◽  
Discrete Control ◽  
Geological Model ◽  
Borehole Data ◽  
Stratigraphic Sequence ◽  
3D Geological Modeling ◽  
3D Geological Model ◽  
Variation Characteristics

Accurately depicting the spatial structure characteristics of Quaternary loose sedimentary strata is not only of great significance for the research of Quaternary geological evolution, but also for the analysis of spatial variation characteristics of the inner hydrogeological and engineering geological attributes of the strata. In this study, an approach for constructing a 3D geological model of Quaternary loose sedimentary strata is proposed based on global stratigraphical discrete points. The approach obtains the discrete control point set of each stratum by using limited borehole data for interpolation and encryption, and the contact relationships and intersection modes of adjacent strata can be determined via the analysis of stratigraphic sequence; finally, taking these as the professional basis, the construction of the 3D geological model of Quaternary loose sedimentary strata can be carried out. This application can not only accurately describe the three-dimensional spatial distribution characteristics of the Quaternary loose sedimentary strata, it can also be used to perform a layered simulation of the spatial variation characteristics of the inner geological properties of the Quaternary loose sedimentary strata, such as lithology, porosity, and water content, by taking the three-dimensional spatial framework of each stratum as the simulation boundary. Finally, this study takes the citizen center of Xiong’an new area as an example in order to verify the reliability and advancement of the 3D geological modeling scheme.

Geothermal exploration of Paleozoic formations in Central Alberta

2013 ◽  
Vol 50 (5) ◽  
pp. 519-534 ◽  
Author(s):  
Simon Weides ◽  
Inga Moeck ◽  
Jacek Majorowicz ◽  
Dan Palombi ◽  
Matthias Grobe
Keyword(s):  
Regional Scale ◽  
Three Dimensional ◽  
Geothermal Gradient ◽  
Rock Properties ◽  
Geological Model ◽  
Field Development ◽  
Geothermal Reservoirs ◽  
Geostatistical Methods ◽  
3D Geological Model ◽  
Alberta Basin

This study explores the distribution of Paleozoic formations in the Central Alberta Basin and investigates rock properties with regard to their usability as geothermal reservoirs. The study area of this regional-scale investigation is about 160 km × 200 km in size and located around Edmonton where the basin depth ranges between 1.8 and 3.5 km. A three-dimensional (3D) geological model was developed based on stratigraphic tops from about 7000 wells from the database of the Alberta Geological Survey (AGS). Spatial distribution and thickness of deep formations were established in the 3D geological model. Porosity and permeability of four Devonian carbonate formations — Cooking Lake, Leduc, and Nisku formations, and Wabamun Group — were investigated using data from more than 50 000 core analyses. Average porosity of the Devonian strata in the study area ranges from 4.5% (Nisku) to 8.7% (Wabamun), average permeability is between 3.5 × 10−15 m2 (Wabamun) and 26 × 10−15 m2 (Leduc). The distribution of both parameters was analyzed using geostatistical methods. Based on an average geothermal gradient and the geometry of formations from the 3D modeling study, an estimation of formation temperatures for the Paleozoic formations is presented. Temperature in the Cambrian Basal Sandstone Unit ranges from 62 °C in the shallower northeast (1.8 km) to 122 °C in the deeper southwest (3.5 km); temperature in the Devonian strata ranges from 22 to 87 °C. With these new results, potential geothermal reservoirs can be delineated in the Alberta Basin around Edmonton, enabling future detailed exploration and field development.

scholarly journals 3D Geological Model of Potential CO2 Storage: Abandoned Oil and Gas Field LBr-1in the Vienna Basin

2017 ◽  
Vol 114 ◽  
pp. 2772-2780 ◽  
Author(s):  
Juraj Francu ◽  
Miroslav Pereszlényi ◽  
Fridtjof Riis ◽  
Ondřej Prokop ◽  
Lukáš Jurenka ◽  
...  
Keyword(s):  
Oil And Gas ◽  
Co2 Storage ◽  
Geological Model ◽  
Vienna Basin ◽  
Gas Field ◽  
3D Geological Model ◽  
Oil And Gas Field

scholarly journals Evaluating quality of 3D geological models: a case study of horizon US2 in the Latitudinal Ob region

2019 ◽  
pp. 45-51
Author(s):  
Uliana Yu. Solopakhina
Keyword(s):  
Western Siberia ◽  
Complex Structure ◽  
Three Dimensional ◽  
Geological Model ◽  
Additional Information ◽  
3D Geological Model ◽  
Geological Models ◽  
Hydrocarbon Reserves

In recent years, there has been a downward trend in easily recoverable hydrocarbon reserves in the Cretaceous sediments of Western Siberia. In this regard, interest in the horizon US2 has increased. Collectors of this horizon have a complex structure, which leads to the appearance of significant errors in geological models. The development of the methodological basis for the analysis of the accuracy of geological models, in particular three-dimensional, can solve this issue.The article gives a technique for analyzing the quality of a 3D geological model: a case study of horizon US2. As a result of the work, the following conclusions were drawn: firstly, there is the need to update geological models after drilling each well; secondly, the possible causes of the discrepancy between the actual and forecasted indices are revealed; thirdly, usage a map of the residuals of the absolute elevations of the horizon US2, as additional information, can minimize risks when drilling wells and increase the reliability of 3D geological model.

Three-Dimensional Modeling of Stratified Geologic Body and Application

2012 ◽  
Vol 220-223 ◽  
pp. 2866-2869
Author(s):  
Shao Hua Liu ◽  
Xin Hai Wang ◽  
Tang Jun
Keyword(s):  
Three Dimensional ◽  
Geological Model ◽  
Three Dimension ◽  
Three Dimensional Modeling ◽  
Visual Technology ◽  
Dimensional Modeling ◽  
3D Geological Model ◽  
Geological Research

Visual technology and three-dimension modeling of Geologic bodies have important meaning in the fields of geological research and resource explore. Based on TIN surface, this paper realizes the model reconstructing of stratified geological entity three-dimension, with the aid of three-dimensional graphic library OpenGL, the visualization and any section view of geological three-dimension model can be achieved, which offers powerful support for excavating the information of 3D geological model

Sign in / Sign up

Export Citation Format

Share Document