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Title: SPE-6 Waveforms for Accelerometer Independent Review Panel

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  1. Los Alamos National Laboratory
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
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Report Number(s):
DOE Contract Number:
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Resource Relation:
Conference: DAG Accelerometer Design Independent Review Panel ; 2017-01-17 - 2017-01-17 ; Las Vegas, Nevada, United States
Country of Publication:
United States

Citation Formats

Steedman, David Wayne. SPE-6 Waveforms for Accelerometer Independent Review Panel. United States: N. p., 2017. Web.
Steedman, David Wayne. SPE-6 Waveforms for Accelerometer Independent Review Panel. United States.
Steedman, David Wayne. Thu . "SPE-6 Waveforms for Accelerometer Independent Review Panel". United States. doi:.
title = {SPE-6 Waveforms for Accelerometer Independent Review Panel},
author = {Steedman, David Wayne},
abstractNote = {},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Feb 09 00:00:00 EST 2017},
month = {Thu Feb 09 00:00:00 EST 2017}

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  • Hydraulic fracturing is an important tool for natural gas and oil exploitation, but its optimization has been impeded by an inability to observe how the fracture propagates and what its overall dimensions are. The few experiments in which fractures have been exposed through coring or mineback have shown that hydraulic fractures are complicated multi-stranded structures that may behave much differently than currently predicted by models. It is clear that model validation, fracture optimization, problem identification and solution, and field development have all been encumbered by the absence of any ground truth information on fracture behavior in field applications. The solutionmore » to this problem is to develop techniques to image the hydraulic fracture in situ from either the surface, the treatment well, or offset wells. Several diagnostic techniques have been available to assess individual elements of the fracture geometry, but most of these techniques have limitations on their usefulness. For example, tracers and temperature logs can only measure fracture height at the wellbore, well testing and production history matching provide a productive length which may or may not be different from the true fracture length, and tiltmeters can provide accurate information on azimuth and type of fracture (horizontal or vertical), but length and height can only be extracted from a non-unique inversion of the data. However, there is a method, the microseismic technique, which possesses the potential for imaging the entire hydraulic fracture and, more importantly, its growth history. This paper discusses application of advanced technology to the microseismic method in order to provide detailed accurate images of fractures and their growth processes.« less
  • Abstract not provided.
  • An evaluation panel was organized to aid in the selection of an appropriate solid form for the high level wastes generated by chemical processing of fuels at the Idaho Chemical Processing Plant. This report is a summary of the panel's findings. The panel agrees that the best choice is borosilicate glass because its performance is acceptable, it represents a well developed process and hence it can be implemented expeditiously. In-can melt appears to be the best process at this time, however, development may result in the continuous melt process proving to be better. Stabilized calcine in a matrix, based onmore » the data presently available, may be acceptable. The ratings are based on performance predicted from scanty experimental evidence. If these preliminary observations stand up, the performance of stabilized calcine in fuetap should be satisfactory and the more attractive processing characteristics of this form would prevail. The glass-crystalline and the other crystalline forms have not been developed to a point demonstrating superior performances that would justify their replacing borosilicate glass. System performance improvements great enough to justify more R and D, and probable higher cost, must be also shown. An objective basis to conclude that increased leach resistance will decrease risk to humans does not now exist.« less