Results of mercury-injection capillary pressure tests on outcrop samples in the Tyonek area of Cook Inlet

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What does this data set describe?

Title:
Results of mercury-injection capillary pressure tests on outcrop samples in the Tyonek area of Cook Inlet
Abstract:
This data set conveys information about samples collected during fieldwork in the Tyonek area of Cook Inlet. Samples were collected from outcrops for Mercury Injection Capillary Pressure (MICP) analyses.
Supplemental_Information:
The data are available in tabular format as comma delimited ASCII files organized into four entities as described in this metadata file under the "Entity_and_Attribute_Information" section. The tables are as follows:
sample locations 	Summarizes sample name, formation from which the samples were collected, coordinates of sample location, and brief description of MICP samples (Table_1)
properties 		Summarizes pore system and capillary properties for MICP analyses (Table_2 and Table_17)
height data 		Summarizes height data for MICP analyses (Table_3, Table_11, and Table_18)
MICP raw data 		Summarizes raw data for MICP samples (Table_4 through Table_10, Table_12 through Table_16, and Table_18 through Table_25)
  1. How should this data set be cited?

    Loveland, A.M., 2010, Results of mercury-injection capillary pressure tests on outcrop samples in the Tyonek area of Cook Inlet: Raw Data File RDF 2010-1, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -151.93033
    East_Bounding_Coordinate: -150.90815
    North_Bounding_Coordinate: 61.35918
    South_Bounding_Coordinate: 61.15849

  3. What does it look like?

  4. Does the data set describe conditions during a particular time period?

    Calendar_Date: 2010
    Currentness_Reference: publication date

  5. What is the general form of this data set?

    Geospatial_Data_Presentation_Form: tabular digital data

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      This is a Point data set.

    2. What coordinate system is used to represent geographic features?

      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.00001. Longitudes are given to the nearest 0.00001. Latitude and longitude values are specified in Decimal degrees.

      The horizontal datum used is North American Datum of 1927.
      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6378137.
      The flattening of the ellipsoid used is 1/298.25722210088.

  7. How does the data set describe geographic features?

    Table_1.csv
    Table 1 is a summary of samples collected in the Homer area of Cook Inlet for Mercury Injection Capillary Pressure analysis. Information includes sample name, the formation from which the samples were collected, coordinates of sample collection, and a brief sample description. (Source: Alaska Division of Geological & Geophysical Surveys)

    Sample
    "Sample" refers to the name of the sample given by the geologist. Naming convention is based on the two-digit year, the two- or three-letter collector initials, and the measured section station number followed by a dash and a number representing the meter in the measured section at which the sample was collected. (Source: Alaska Division of Geological & Geophysical Surveys)

    These attributes are names assigned by the geologist and are unrepresentable.

    Formation
    Refers to the geologic unit from which a sample was collected. (Source: Alaska Division of Geological & Geophysical Surveys)

    ValueDefinition
    West Foreland FormationTertiary sedimentary unit
    Tyonek FormationTertiary sedimentary unit

    Latitude
    Refers to a position on earth with respect to the equator (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:61.15849
    Maximum:61.35978
    Units:decimal degrees

    Longitude
    Refers to a position on earth with respect to the prime meridian (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:-150.90815
    Maximum:-151.93033
    Units:decimal degrees

    Sample Description
    A brief description of sample lithology and other significant characteristics (Source: Alaska Division of Geological & Geophysical Surveys)

    Sample descriptions are documented in the field and are sample-specific, therefore unrepresentable

    properties
    Tables summarizing of pore system and capillary properties for Mercury Injection Capillary Pressure analyses performed on samples from the Tyonek area. Composed of Table_2.csv and Table_17.csv. (Source: Alaska Division of Geological & Geophysical Surveys)

    Sample Depth (ft.)
    This describes the sample name and meterage at which the sample was collected within a measured section. (Source: Alaska Division of Geological & Geophysical Surveys)

    These attributes are names assigned by the geologist and are unrepresentable.

    Porosity (%)
    This attribute refers to the porosity of the sample. (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:17.8
    Maximum:33.1
    Units:percent

    Kair (md)
    Refers to the Klinkenberg porosity of the sample. (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:0.0052
    Maximum:0.791
    Units:millidarcies

    Median Aperture
    Refers to the median aperture of the sample. (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:0.0246
    Maximum:0.2928

    Entry
    Refers to the capillary pressure at mercury saturations of "entry" (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:229
    Maximum:3390

    5%
    Refers to the capillary pressure at mercury saturation of 5%. (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:320
    Maximum:4738

    7.5%
    Refers to the capillary pressure at mercury saturation of 7.5%. (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:333
    Maximum:5024

    10%
    Refers to the capillary pressure at mercury saturation of 10%. (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:342
    Maximum:5279

    height data
    Tables summarizing height data for Mercury Injection Capillary Pressure analyses. Composed of Table_3.csv, Table_11.csv and Table_18.csv (Source: Alaska Division of Geological & Geophysical Surveys)

    Capillary pressure (psia) 0%
    Refers to the capillary pressure at 0% (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:223
    Maximum:3390

    Capillary pressure (psia) 5%
    Refers to capillary pressure at 5%. (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:320
    Maximum:4738

    Capillary pressure (psia) 7.5%
    Refers to the capillary pressure at 7.5%. (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:333
    Maximum:5024

    Capillary pressure (psia) 10%
    Refers to the capillary pressure at 10%. (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:342
    Maximum:5279

    Height in feet 0% (gas)
    Refers to the height in feet at 0% (gas) (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:98
    Maximum:1446

    Height in feet 5% (gas)
    Refers to the height in feet at 5% (gas) (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:137
    Maximum:2022

    Height in feet 10% (gas)
    Refers to the height at 10% (gas) (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:146
    Maximum:2252

    Height in feet 7.5% (gas)
    Refers to the height at 7.5% (gas) (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:142
    Maximum:2144

    Height in feet 0% (oil)
    Refers to the height at 0% (oil) (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:132
    Maximum:1959

    Height in feet 5% (oil)
    Refers to the height in feet at 5% (oil) (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:185
    Maximum:2739

    Height in feet 7.5% (oil)
    Refers to the height at 7.5% (oil) (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:192
    Maximum:2904

    Height in feet 10% (oil)
    Refers to the height at 10% (oil) (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:198
    Maximum:3051

    MICP raw data
    Summarizes the raw data for Mercury Injection Capillary Pressure samples. Composed of Table_4.csv, Table_5.csv, Table_6.csv, Table_7.csv, Table_8.csv, Table_9.csv, Table_10.csv, Table_12.csv, Table_13.csv, Table_14.csv, Table_15.csv, Table_16.csv, Table_18.csv, Table_19.csv, Table_20.csv, Table_21.csv, Table_22.csv, Table_23.csv, Table_24.csv and Table_25.csv (Source: Alaska Division of Geological & Geophysical Surveys)

    Capillary Pressure (psia)
    Refers to the capillary pressure measured in units of absolute pressure per square inch. (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:1.64
    Maximum:59500
    Units:psia

    Pore Aperture Diameter (microns)
    Refers to the diameter of the pore aperture measured in units of microns. (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:0.0036
    Maximum:130
    Units:microns

    Cumulative Bulk Vol. (%)
    Refers to the cumulative bulk volume measured as a percentage. (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:0.00
    Maximum:19.98
    Units:percent

    Wetting Phase Saturation (%)
    Refers to the percent of saturation in the wetting phase of mercury injection capillary pressure analysis. (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:0.00
    Maximum:100
    Units:percent

    Incremental Wetting Phase Change (%)
    Refers to the incremental wetting phase change in percent. (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:0.00
    Maximum:9.77
    Units:percent

    Saturation Change per psia
    Refers to the saturation change in relation to the capillary pressure. (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:0
    Maximum:0.0178
    Units:percent


Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

    Funding for this work was provided by Benchmark Oil and Gas, Pioneer Natural Resources, Chevron North American Exploration and Production Company, and the State of Alaska.

  3. To whom should users address questions about the data?


Why was the data set created?

This data set was created to provide sample collection location as well as summarize descriptions of the samples, such as the formation from which they were collected, and a brief physical description of the sample.


How was the data set created?

  1. From what previous works were the data drawn?

    Adkison and others (1975) (source 1 of 8)
    Adkison, W.L., Kelley, J.S., and Newman, K.R., 1975, Lithology and palynology of Tertiary rocks exposed near Capps Glacier and along the Chuitna River, Tyonek Quadrangle, southern Alaska: U.S. Geological Survey Open-file Report OFR 75-21.

    Type_of_Source_Media: paper
    Source_Contribution: Geologic formation identification in the Tyonek area

    Barnes (1966) (source 2 of 8)
    Barnes, F.F., 1966, Geology and coal resources of the Beluga-Yentna region Alaska: U.S. Geological Survey Bulletin B 1202-C.

    Other_Citation_Details: 54 p., 7 plates
    Type_of_Source_Media: paper
    Source_Contribution: Geologic formation identification in the Tyonek area

    Calderwood and Fackler (1972) (source 3 of 8)
    Calderwood, K.W., and Fackler, W.C., 1972, Proposed stratigraphic nomenclature for Kenai Group, Cook Inlet basin, Alaska: AAPG Bulletin v. 56.

    Other_Citation_Details: p. 739-754.
    Type_of_Source_Media: paper
    Source_Contribution: Geologic formation identification in the Tyonek area

    Flores and others (1994) (source 4 of 8)
    Flores, R.M., Stricker, G.D., and Roberts, S.B., 1994, Miocene coal-bearing strata of the Tyonek Formation:.

    Other_Citation_Details: p. 95-114.
    This is part of the following larger work.

    Till, A.B., and Moore, T.E., 1994, Geologic Studies in Alaska by the U.S. Geological Survey: U.S. Geological Survey Bulletin B 2107.

    Type_of_Source_Media: paper
    Source_Contribution: Geologic formation identification in the Tyonek area

    Flores and others (1997) (source 5 of 8)
    Flores, R.M., Stricker, G.D., and Stiles, R.B., 1997, Tidal influence on deposition and quality of coals in the Miocene Tyonek Formation, Beluga Coal Field, upper Cook Inlet, Alaska:.

    Other_Citation_Details: p. 137-156
    This is part of the following larger work.

    Dumoulin, J.A., and Gray, J.E., 1997, Geologic Studies in Alaska by the U.S. Geological Survey, 1995: U.S. Geological Survey Professional Paper P 1574.

    Type_of_Source_Media: paper
    Source_Contribution: Geologic formation identification in the Tyonek area

    Magoon and others (1976) (source 6 of 8)
    Magoon, L.B., Adkison, W.L., and Egbert, R.M., 1976, Map showing geology, wildcat wells, Tertiary plant fossil localities, K-Ar age dates, and petroleum operations, Cook Inlet, Alaska: U.S. Geological Survey Miscellaneous Investigations Map I 1019.

    Other_Citation_Details: 3 sheets
    Type_of_Source_Media: paper
    Source_Scale_Denominator: 250000
    Source_Contribution: Geologic formation identification in the Tyonek area

    Varva and others (1992) (source 7 of 8)
    Varva, C.L., Kaldi, J.G., and Sneider, R.M., 1992, Geological applications of capillary pressure: a review: American Association of Petroleum Geologists Bulletin June 1992, Vol. 76, Issue 6.

    Other_Citation_Details: p. 840-850
    Type_of_Source_Media: paper
    Source_Contribution: Summarizes the geological application of MICP

    Swanson (1981) (source 8 of 8)
    Swanson, B.F., 1981, A simple correlation between permeabilities and mercury capillary pressures: Journal of Petroleum Technology Vol. 33, Issue 12.

    Other_Citation_Details: p. 2498-2504
    Type_of_Source_Media: paper
    Source_Contribution: Permeability calculation

  2. How were the data generated, processed, and modified?

    Date: 2009 (process 1 of 2)
    Outcrop samples were collected from six measured sections within the Beluga, Tyonek, and West Foreland Formations near Tyonek, Alaska. Outcrop locations and geologic formations were selected and interpreted based on preexisting geologic mapping.

    Data sources used in this process:

    • Adkison and others (1975)
    • Barnes(1966)
    • Calderwood and Fackler (1972)
    • Flores and others (1994)
    • Flores and others (1997)
    • Magoon and others (1976)

    Date: 2009 (process 2 of 2)
    Analyses were performed by PetroTech Associates, Houston, Texas. Pieces of rock in each sample were examined using a reflected light microscope (magnifications of 5X to 50X) and a brief description of the rock properties was made (see below). A representative portion of the bulk sample was selected for capillary pressure analysis and trimmed to a size that would fit the sample holder. The sample was then placed in a low temperature convection oven and dried to a constant weight. The high-pressure, mercury injection capillary pressure (MICP) analysis was carried out using a Micromeritics 9420 mercury porosimeter. Penetrometers with 15 cc sample chambers were used for all analyses. Each test utilized a pressure table containing 118 separate pressure points from 1.5 to 59,500 psia, and the volume of mercury injected was measured at each point. The collected data were corrected for closure; that is, intrusion related only to the mercury conforming to the sample surface. Porosity and permeability values were generated for each of the samples using the MICP data. The porosity was measured using an Archimedes bulk volume and the pore volume based on the closure corrected volume of mercury injected. Permeability was calculated using the Swanson Equation (Swanson, 1981).

    Data sources used in this process:

    • Swanson (1981)
    • Varva and others (1992)

  3. What similar or related data should the user be aware of?


How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?

    The latitude and longitude values in this report were collected with handheld GPS units which are accurate to approximately 4 meters. Formation names were interpreted on the basis of prior geologic mapping. To facilitate accurate analysis care was taken to collect fresh, unweathered, fracture-free samples that appeared to be representative of low-permeability lithologies cropping out within the field area. PetroTech Associates did not provide documentation of per/sample or general procedural error ranges, however, more information regarding their analytical procedures can be found in the process steps section (below).

  2. How accurate are the geographic locations?

    The horizontal position accuracy on point data is approximately 4 meters based on the error range in the handheld GPS units used to collect spatial information.

  3. How accurate are the heights or depths?

  4. Where are the gaps in the data? What is missing?

    This dataset includes all samples submitted for MICP analysis.

  5. How consistent are the relationships among the observations, including topology?

    No topologic relationships are present in this data set.


How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints:
This report, map, and/or data set are available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below).
Use_Constraints:
Any hardcopies or published data sets utilizing these data sets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. User specifically agrees not to misrepresent these data sets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys.

  1. Who distributes the data set? (Distributor 1 of 1)

    State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
    c/o Energy Section Geologist
    3354 College Road
    Fairbanks, Alaska 99709-3707
    USA

    (907) 451-5020 (voice)
    907-451-5050 (FAX)
    dggspubs@alaska.gov

    Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays
    Contact_Instructions:
    Please view our web site (<http://www.dggs.dnr.state.ak.us>) for the latest information on available data. Please contact us using the e-mail address provided above when possible.
  2. What's the catalog number I need to order this data set?

  3. What legal disclaimers am I supposed to read?

    The State of Alaska makes no express or implied warranties (including warranties of merchantability and fitness) with respect to the character, function, or capabilities of the electronic services or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products, any failure thereof, or otherwise, and in no event will the State of Alaska's liability to the requester or anyone else exceed the fee paid for the electronic service or product.

  4. How can I download or order the data?


Who wrote the metadata?

Dates:
Last modified: 06-Jan-2010
Metadata author:
Energy Section Geologist
Alaska Division of Geological & Geophysical Surveys
3354 College Road
Fairbanks, Alaska 99709-3797
USA

(907)451-5020 (voice)

Metadata standard:
FGDC Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)


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