Determination of Barometric Efficiency and Effective Porosity, Boreholes UE-25 C#1, UE-25 C#2, and UE-25 C#3, Yucca Mountain, Nye County, Nevada PDF Download
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Author: Arthur L. Geldon
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ISBN:
Category : Atmospheric pressure
Languages : en
Pages : 28
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Author: Arthur L. Geldon
Publisher:
ISBN:
Category : Atmospheric pressure
Languages : en
Pages : 28
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Author:
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Category :
Languages : en
Pages : 21
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Simultaneous records of water-level altitudes in boreholes UE-25 cNo. 1, UE-25 cNo. 2, and UE-25 cNo. 3 (the C-holes) and atmospheric pressure at and near the C-holes were obtained from July 15 to September 8, 1993, to determine the barometric efficiency of the entire uncased section of each of the C-holes, for the purpose of analyzing pumping tests. Each of the C-holes is 3,000 feet deep. About 1,600 feet of each borehole is open in Miocene tuffaceous rocks. Water-level altitudes in the C-holes fluctuate in response to Earth tides and changes in atmospheric pressure, which are characteristics of wells completed in an elastic, confined aquifer. The barometric efficiency of the C-holes in this study was analyzed by filtering simultaneously collected water-level-altitude and atmospheric-pressure data to remove the influences of Earth tides and semi-diurnal heating and cooling and then regressing filtered water-level-altitude changes as a function of filtered changes in atmospheric pressure. The average barometric efficiency of the uncased sections of boreholes UE-25 cNo. 1 and UE-25 cNo. 3 was determined to be 0.94. Malfunctioning equipment prevented determining the barometric efficiency of bore-hole UE-25 cNo. 2. An average effective porosity of 0.36 was calculated from barometric efficiency values determined in this study and a specific storage value of 0.497 x 10−6 per foot that was determined previously from geophysical logs of the C-holes. A porosity of 0.36 is consistent with values determined from geophysical logs and core analyses for the Calico Hills Formation.
Author:
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Category : Hydrology
Languages : en
Pages : 128
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Author:
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ISBN:
Category :
Languages : en
Pages : 85
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The purpose of this report is to characterize the hydrogeology of saturated tuffaceous rocks penetrated by boreholes UE-25c No. 1, UE-25c No. 2, and UE-25c No. 3. These boreholes are referred to collectively in this report as the C-holes. The C-holes were drilled to perform multiwell aquifer tests and tracer tests; they comprise the only complex of closely spaced boreholes completed in the saturated zone at Yucca Mountain. Results of lithologic and geophysical logging, fracture analyses, water-level monitoring, temperature and tracejector surveys, aquifer tests, and hydrochemical sampling completed at the C-hole complex as of 1986 are assessed with respect to the regional geologic and hydrologic setting. A conceptual hydrogeological model of the Yucca Mountain area is presented to provide a context for quantitatively evaluating hydrologic tests performed at the C-hole complex as of 1985, for planning and interpreting additional hydrologic tests at the C-hole complex, and for possibly re-evaluating hydrologic tests in boreholes other than the C-holes.
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Category : Bible
Languages : en
Pages :
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![Drilling, Logging, and Testing Information from Borehole UE-25 UZ[number-sign]16, Yucca Mountain, Nevada PDF](https://books.google.com/books/content/images/frontcover/7n_IjwEACAAJ?fife=w80-h100)
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Category :
Languages : en
Pages :
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Borehole UE-25 UZ[number-sign]16 is the first of two boreholes that may be used to determine the subsurface structure at Yucca Mountain by using vertical seismic profiling. This report contains information collected while this borehole was being drilled, logged, and tested from May 27, 1992, to April 22, 1994. It does not contain the vertical seismic profiling data. This report is intended to be used as: (1) a reference for drilling similar boreholes in the same area, (2) a data source on this borehole, and (3) a reference for other information that is available from this borehole. The reference information includes drilling chronology, equipment, parameters, coring methods, penetration rates, completion information, drilling problems, and corrective actions. The data sources include lithology, fracture logs, a list of available borehole logs, and depths at which water was recorded. Other information is listed in an appendix that includes studies done after April 22, 1994.
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Category :
Languages : en
Pages : 140
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Pumping and injection tests conducted in 1983 and 1984 in boreholes UE-25c {number_sign}1, UE-25c {number_sign}2, and UE-25c {number_sign}3 (the c-holes) at Yucca Mountain, Nevada, were analyzed with respect to information obtained from lithologic and borehole geophysical logs, core permeameter tests, and borehole flow surveys. The three closely spaced c-holes, each of which is about 3,000 feet deep, are completed mainly in nonwelded to densely welded, ash-flow tuff of the tuffs and lavas of Calico Hills and the Crater Flat Tuff of Miocene age. Below the water table, tectonic and cooling fractures pervade the tuffaceous rocks but are distributed mainly in 11 transmissive intervals, many of which also have matrix permeability. Information contained in this report is presented as part of ongoing investigations by the US Geological Survey (USGS) regarding the hydrologic and geologic suitability of Yucca Mountain, Nevada, as a potential site for the storage of high-level nuclear waste in an underground mined geologic repository. This investigation was conducted in cooperation with the US Department of Energy under Interagency Agreement DE-AI08-78ET44802, as part of the Yucca Mountain Site Characterization Project.
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Category :
Languages : en
Pages :
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This Data Qualification Report uses corroborating data methods according to Attachment 2 of AP-SIII. 2Q, Rev. 00, ICN 3, ''Qualification of Unqualified Data and the Documentation of Rationale for Accepted Data'', to qualify flowing interval data from a borehole spinner log. This report was prepared in accordance with Data Qualification Plan DQP-NBS-GS-000005, Rev. 00. These data were collected under the Yucca Mountain Site Characterization Project (YMP) Quality Assurance Requirements and Description (QARD) document but are unqualified because unqualified software was used in data reduction. The unqualified flow log was run in Borehole UE-25c No. 3 in 1995. Corroborative evidence is available from independent flow logs run in the same borehole in 1984 by an earlier investigator. This corroborative support is unusually strong because it represents a second measurement of the same data. The corroborating data agree well with the data being qualified and support the adequacy of the data. The unqualified software, the TERRASTATION code by Terrasciences Inc., is widely used and accepted by the technical community for non-project applications. The widespread acceptance of the software further supports the adequacy of the data. In view of the evidence provided by the corroborating data and general acceptance of the software, the Data Qualification Team has concluded that the flowing interval data considered in this report are adequate for generalized use. These data are qualified for use by the YMP and can be appropriately used in a wide variety of applications, so long as consideration is given to accuracy, precision, and representativeness of the data for an intended use in a technical product.
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Category :
Languages : en
Pages :
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The qualification is being completed in accordance with the Data Qualification Plan DQP-NBS-GS-000006, Rev. 00 (CRWMS M & O 2001). The purpose of this data qualification activity is to evaluate for qualification the unqualified developed input and porosity output included in Data Tracking Number (DTN) M09910POROCALC.000. The main output of the analyses documented in DTN M09910POROCALC.000 is the calculated total porosity and effective porosity for 40 Yucca Mountain Project boreholes. The porosity data are used as input to Analysis Model Report (AMR) 10040, ''Rock Properties Model'' (MDL-NBS-GS-000004, Rev. 00), Interim Change Notice [ICN] 02 (CRWMS M & O 2000b). The output from the rock properties model is used as input to numerical physical-process modeling within the context of a relationship developed in the AMR between hydraulic conductivity, bound water and zeolitic zones for use in the unsaturated zone model. In accordance with procedure AP-3.15Q, the porosity output is not used in the direct calculation of Principal Factors for post-closure safety or disruptive events. The original source for DTN M09910POROCALC.000 is a Civilian Radioactive Waste Management System (CRWMS) Management and Operating Contractor (M & O) report, ''Combined Porosity from Geophysical Logs'' (CRWMS M & O 1999a and hereafter referred to as Rael 1999). That report recalculated porosity results for both the historical boreholes covered in Nelson (1996), and the modern boreholes reported in CRWMS M & O (1996a, b). The porosity computations in Rael (1999) are based on density-porosity mathematical relationships requiring various input parameters, including bulk density, matrix density and air and/or fluid density and volumetric water content. The main output is computed total porosity and effective porosity reported on a foot-by-foot basis for each borehole, although volumetric water content is derived from neutron data as an interim output. This qualification report uses technical assessment and corroboration to evaluate the original subject DTN. Rael (1999) provides many technical details of the technical assessment and corroboration methods and partially satisfies the intent of the qualification plan for this analysis. Rael presents a modified method based on Nelson (1996) to recompute porosity and porosity-derived values and uses some of the same inputs. Rael's (1999) intended purpose was to document porosity output relatively free of biases introduced by differing computational methods or parameter selections used for different boreholes. The qualification report necessarily evaluates the soundness of the pre-Process Validation and Re-engineering (PVAR) analyses and methodology, as reported in Rael (1999).
Author: Fenix & Scisson
Publisher:
ISBN:
Category : Borings
Languages : en
Pages : 112
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This report is a compilation of data from sixteen boreholes drilled under the guidance of the U.S. Geological Survey to help identify the areas water table. The sixteen boreholes were drilled between April, 1983 and November, 1983 in Area 25 of the Nevada Test Site and in Bureau of Land Management land adjacent to the Nevada Test Site. Data presented in the hole histories include all locations, daily activities, review of hole conditions, geophysical log lists and video tape lists, and microfiche copies of all geophysical logs run in hole by Fenix & Scisson, Inc. subcontractor
