A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The Role of Shallow Surface Investigations in Appalachian Shale Energy Development
Engineers and geologists within the Appalachian Basin (encompassing the Utica and Marcellus formations) focus on the location and composition of shale layers located thousands of feet below the Earth's surface. However, the soil and rock encountered within the top 30 meters (100 ft) can have a direct impact on the ability of the resources to be developed. A properly designed geotechnical investigation - consisting of site reconnaissance, geophysics and/or geotechnical drilling - can assist in identification of and anticipatory design for geohazards from the construction phase through a lifetime of well pads, water impoundments, midstream transmission systems, or access roads. This paper presents three case studies of geotechnical investigations for midstream operations that were performed during the preliminary design phase of the projects. Case Study #1 consists of a geophysical investigation performed on sensitive federal land in conjunction with geotechnical drilling operations in order to identify the appropriate geometry for a horizontal directional drill (HDD) installation of a 0.61-m (2-ft) diameter pipeline. Case Study #2 discusses a geotechnical drilling investigation and foundation design performed for the construction of a natural gas transmission facility. Case Study #3 presents the geotechnical drilling investigation for the design of a structure to support a natural gas transmission line/state route crossing located in an area that is to be subjected to longwall mining in the near future.
The Role of Shallow Surface Investigations in Appalachian Shale Energy Development
Engineers and geologists within the Appalachian Basin (encompassing the Utica and Marcellus formations) focus on the location and composition of shale layers located thousands of feet below the Earth's surface. However, the soil and rock encountered within the top 30 meters (100 ft) can have a direct impact on the ability of the resources to be developed. A properly designed geotechnical investigation - consisting of site reconnaissance, geophysics and/or geotechnical drilling - can assist in identification of and anticipatory design for geohazards from the construction phase through a lifetime of well pads, water impoundments, midstream transmission systems, or access roads. This paper presents three case studies of geotechnical investigations for midstream operations that were performed during the preliminary design phase of the projects. Case Study #1 consists of a geophysical investigation performed on sensitive federal land in conjunction with geotechnical drilling operations in order to identify the appropriate geometry for a horizontal directional drill (HDD) installation of a 0.61-m (2-ft) diameter pipeline. Case Study #2 discusses a geotechnical drilling investigation and foundation design performed for the construction of a natural gas transmission facility. Case Study #3 presents the geotechnical drilling investigation for the design of a structure to support a natural gas transmission line/state route crossing located in an area that is to be subjected to longwall mining in the near future.
The Role of Shallow Surface Investigations in Appalachian Shale Energy Development
Henning, John T. (author) / Ladavat, Steven (author)
Shale Energy Engineering Conference 2014 ; 2014 ; Pittsburgh, Pennsylvania, United States
Shale Energy Engineering 2014 ; 121-132
2014-05-13
Conference paper
Electronic Resource
English
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