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Title: Imaging Geothermal Resources with 3D Seismic Attributes

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Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
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Conference: Presented at: Stanford Geothermal Meeting, Palo Alto, CA, United States, Jan 26 - Jan 28, 2015
Country of Publication:
United States

Citation Formats

Mellors, R J, Marks, N, Pullammanappallil, S, Casteel, J, Yang, T, Moore, J, and Jones, C. Imaging Geothermal Resources with 3D Seismic Attributes. United States: N. p., 2015. Web.
Mellors, R J, Marks, N, Pullammanappallil, S, Casteel, J, Yang, T, Moore, J, & Jones, C. Imaging Geothermal Resources with 3D Seismic Attributes. United States.
Mellors, R J, Marks, N, Pullammanappallil, S, Casteel, J, Yang, T, Moore, J, and Jones, C. 2015. "Imaging Geothermal Resources with 3D Seismic Attributes". United States. doi:.
title = {Imaging Geothermal Resources with 3D Seismic Attributes},
author = {Mellors, R J and Marks, N and Pullammanappallil, S and Casteel, J and Yang, T and Moore, J and Jones, C},
abstractNote = {},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2015,
month = 1

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  • We have applied the attenuation inversion technique developed by Evans and Zucca (1988) to a seismic tomographic data set taken at Newberry Volcano by Achauer et al. (1988). Our preliminary results suggest that the interpretation of the velocity data by Achauer et al. that a magma chamber is present 3 km beneath the caldera is not confirmed by the attenuation data.
  • The fracture systems that act as conduits for fluids play an important role in the extraction of geothermal energy in both liquid- and vapor-dominated fields. Hydraulic fracturing is a common engineering practice used to enhance fluid production from reservoirs with low permeability. In hot dry rock (HDR) and in vapor-dominated reservoirs that are being depleted, it is necessary to inject water to produce steam. This process generally requires hydraulic fracturing in advance to enhance the recovery. Therefore, fracture imaging and characterization are important in obtaining a better understanding of geothermal reservoirs. In this paper the authors present two new techniquesmore » for seismic characterization of fracture systems. The first technique involves the detection and characterization of existing fractures with a seismic source at the surface and a hydrophone array in a borehole, i.e., the hydrophone vertical seismic profiling (VSP). P- and S-waves impinging on an open fracture induce fluid flow from the fracture into the borehole and generate tube waves in the borehole. Orientations of fractures can be determined by using the ratios of an S-wave generated tube wave to a P-wave generated tube wave. The second technique is the high-precision location of induced earthquakes during hydrofracturing for imaging the fracture. These approaches provide the means to obtain much more detailed information about fracture systems within geothermal reservoirs.« less
  • A shallow geothermal reservoir in the Pueblo of Jemez in New Mexico may indicate a commercial-scale geothermal energy potential in the area. To explore the geothermal resource at Jemez Pueblo, seismic surveys are conducted along three lines for the purpose of imaging complex subsurface structures near the Indian Springs fault zone. A 3-D magneto-telluric (MT) survey is also carried out in the same area. Seismic and MT imaging can provide complementary information to reveal detailed geologic formation properties around the fault zones. The high-resolution seismic images will be used together with MT images, geologic mapping, and hydrogeochemistry, to explore themore » geothermal resource at Jemez Pueblo, and to determine whether a conunercial-scale geothermal resource exists for power generation or direct use applications after drilling and well testing.« less
  • J. N. Louie, Pullammanappallil, S., and Honjas, W., 2011, Advanced seismic imaging for geothermal development: presentation 32 at the New Zealand Geothermal Workshop 2011, Nov. 21-23, Auckland.