Mercury injection capillary pressure (MICP) results from outcrop samples in the Tyonek, Beluga, and West Foreland Formations, Tyonek and Talkeetna quadrangles, Alaska

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Frequently anticipated questions:


What does this data set describe?

Title:
Mercury injection capillary pressure (MICP) results from outcrop samples in the Tyonek, Beluga, and West Foreland Formations, Tyonek and Talkeetna quadrangles, Alaska
Abstract:
The State of Alaska Division of Geological & Geophysical Surveys (DGGS) is currently engaged in a multi-year study of the hydrocarbon potential of the Tertiary and Mesozoic strata in Cook Inlet basin. This report summarizes mercury injection capillary pressure (MICP) data for 38 outcrop samples collected from the Tyonek, Beluga, and West Foreland Formations in the Tyonek and Talkeetna quadrangles. All samples were collected from measured stratigraphic sections. The Tyonek Formation samples have unimodal pore systems and the majority have well defined to sharp intrusion profiles. The Beluga Formation samples are characterized by unimodal pore systems and relatively broad intrusion profiles. The West Foreland Formation samples have much more heterogeneous pore structures and a majority of the samples display some level of bimodality. Six samples from within the various formations have entry pressures above 500 psia and these were evaluated for potential seal capacity. Three of the samples are Type C seals, under the Sneider Classification, and have an average potential seal capacity for oil of 565 feet, and 417 feet for gas (assuming 7.5% hydrocarbon saturation in the seal). One sample from the Beluga Formation is a Type B seal capable of trapping 2,670 feet and 1,971 feet of oil and gas, respectively. The best seals (Type A and A*) are from the West Foreland Formation, upper member, and have much higher potential seal capacities, up to 7,132 feet of oil and 5,265 feet of gas for the Type A* seal.
Supplemental_Information:
The DGGS metadata standard extends the FGDC standard to include elements that are required to facilitate our internal data management. These elements, referred to as "layers," group and describe files that have intrinsic logical or topological relationships. Attribute information for each layer is included in this metadata file under the "Entity_and_Attribute_Information" section. The metadata "layer" provides the metadata, codesets, or other documentation files applicable to all layers. The data layer(s) are titled: >sample-location-details: A CSV file with sample reference numbers, latitude, longitude, and rock unit (formation). >micp-data: This folder contains Excel spreadsheets (one file for each individual sample; file names correspond to sample number preceded by a "t " ). The contents in each Excel file include worksheets with the following information: Sheet1 (data for individual sample), Chart1 (Bulk Volume), Chart2 (Pore Volume), Chart3 (Pore Aperture Size Distribution). >micp-summary: This folder includes Excel spreadsheets with summary data for the samples analyzed. The spreadsheets are: 1) tyonek-pore-size-distribution.xlsx - Pore aperture size distribution charts for Tyonek Formation samples. Note that the PetroTech cover letter refers to this file as Figure 2a; 2) tyonek-pore-volume-graph-data.xlsx - Tyonek Formation, type section, pore volume graph and data. Note that the PetroTech cover letter refers to this file as Figure 1a; 3) beluga-pore-size-distribution.xlsx - Pore aperture size distribution charts for Beluga Formation samples. Note that the PetroTech cover letter refers to this file as Figure 2b; 4) beluga-pore-volume-graph-data.xlsx - Beluga Formation pore volume graph and data. Note that the PetroTech cover letter refers to this file as Figure 1b; 5) west-foreland-pore_size-distribution.xlsx - Pore aperture size distribution charts for West Foreland Formation samples. Note that the PetroTech cover letter refers to this file as Figure 2c; 6) west-foreland-pore-volume-graph-data.xlsx - West Foreland Formation pore volume graph and data. Note that the PetroTech cover letter refers to this file as Figure 1c; 7) pore-system-properties.xlsx - Pore system properties of the Tyonek Formation, Beluga Formation, and the West Foreland Formation. Note that the PetroTech cover letter refers to the tables within these files as Table 2a-2c.
  1. How should this data set be cited?

    Loveland, A.M., and Associates, PetroTech, 2013, Mercury injection capillary pressure (MICP) results from outcrop samples in the Tyonek, Beluga, and West Foreland Formations, Tyonek and Talkeetna quadrangles, Alaska: Raw Data File RDF 2013-4, Alaska Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.

    Online Links:

    Other_Citation_Details: 5 p.

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -151.98276
    East_Bounding_Coordinate: -150.65359
    North_Bounding_Coordinate: 62.52868
    South_Bounding_Coordinate: 61.15744

  3. What does it look like?

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

    Calendar_Date: 2011
    Currentness_Reference: ground condition

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

    Geospatial_Data_Presentation_Form: ASCII tabular files

  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?

      The horizontal datum used is North American Datum of 1927.
      The ellipsoid used is North American Datum of 1927.
      The semi-major axis of the ellipsoid used is 6378206.4.
      The flattening of the ellipsoid used is 1/294.9786982.

  7. How does the data set describe geographic features?

    rdf2013-4-sample-location-details
    A CSV file with sample reference numbers, latitude, longitude, and rock unit (formation). (Source: PetroTech Associates and Alaska Division of Geological & Geophysical Surveys)

    Sample_ID
    Label assigned in the field to identify the sample. (Source: Alaska Division of Geological & Geophysical Surveys)

    Follows DGGS convention 20YYAAA9999-99a: YY=last two digits of year, AAA=geologist initials (one to three characters), 9999-99a (1-4 digits, a dash, decimal number optionally followed by an optional alpha character)= station number of the measured section - height from base in meters, alpha character indicates the sample was duplicated. Geologists' initials represent the following: DL = Dave LePain, DJM = David J. Mauel.

    Latitude
    Latitude, NAD27 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:61.15744
    Maximum:62.52868
    Units:decimal degrees

    Longitude
    Longitude, NAD27 (Source: Alaska Division of Geological & Geophysical Surveys)

    Range of values
    Minimum:-151.98276
    Maximum:-150.65359
    Units:decimal degrees

    Formation
    This field differentiates between rocks sampled from the Beluga Formation, West Foreland Formation, upper member, and the measured sections that were tentatively assigned to the Tyonek Formation (indicated with a query mark). (Source: Alaska Division of Geological & Geophysical Surveys)

    Formal codeset
    Codeset Name:National Geologic Map Database Geologic Names Lexicon GEOLEX
    Codeset Source:Geologic unit assignments were based on the nomenclature presented in: National Cooperative Geologic Mapping Program, and Association of American State Geologists, National Geologic Map Database Geologic Names Lexicon GEOLEX: U.S. Geological Survey, available online, <http://ngmdb.usgs.gov/Geolex/> (accessed 07/11/2013).

    rdf2013-4-micp-data
    This folder contains Excel spreadsheets (one file for each individual sample; file names correspond to sample number preceded by a "t " ). The contents in each Excel file include worksheets with the following information: Sheet1 (data for individual sample), Chart1 (Bulk Volume), Chart2 (Pore Volume), Chart3 (Pore Aperture Size Distribution). (Source: PetroTech Associates and Alaska Division of Geological & Geophysical Surveys)

    rdf2013-4-micp-summary
    This folder includes Excel spreadsheets with summary data for the samples analyzed. The spreadsheets are: 1) tyonek-pore-size-distribution.xlsx - Pore aperture size distribution charts for Tyonek Formation samples. Note that the PetroTech cover letter refers to this file as Figure 2a; 2) tyonek-pore-volume-graph-data.xlsx - Tyonek Formation, type section, pore volume graph and data. Note that the PetroTech cover letter refers to this file as Figure 1a; 3) beluga-pore-size-distribution.xlsx - Pore aperture size distribution charts for Beluga Formation samples. Note that the PetroTech cover letter refers to this file as Figure 2b; 4) beluga-pore-volume-graph-data.xlsx - Beluga Formation pore volume graph and data. Note that the PetroTech cover letter refers to this file as Figure 1b; 5) west-foreland-pore_size-distribution.xlsx - Pore aperture size distribution charts for West Foreland Formation samples. Note that the PetroTech cover letter refers to this file as Figure 2c; 6) west-foreland-pore-volume-graph-data.xlsx - West Foreland Formation pore volume graph and data. Note that the PetroTech cover letter refers to this file as Figure 1c; 7) pore-system-properties.xlsx - Pore system properties of the Tyonek Formation, Beluga Formation, and the West Foreland Formation. Note that the PetroTech cover letter refers to the tables within these files as Table 2a-2c. (Source: PetroTech Associates and Alaska Division of Geological & Geophysical Surveys)


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?

    This work was supported by State of Alaska Capitol Improvement Project funding.

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

    Alaska Division of Geological & Geophysical Surveys
    Attn: James Weakland
    GIS Analyst
    3354 College Road
    Fairbanks, AK 99709-3707
    USA

    (907)451-5029 (voice)
    dggsgis@alaska.gov

    Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays


Why was the data set created?

The State of Alaska Division of Geological & Geophysical Surveys (DGGS) is currently engaged in a multi-year study of the hydrocarbon potential of the Tertiary and Mesozoic strata in Cook Inlet basin. This report summarizes mercury injection capillary pressure (MICP) data for 38 outcrop samples collected from the Tyonek, Beluga, and West Foreland Formations in the Tyonek and Talkeetna quadrangles. All samples were analyzed by PetroTech Associates, Houston, TX. The capillary pressure data for this publication is provided in its native spreadsheet format. The manuscript provides correspondence from PetroTech Associates describing the methods used in MICP analyses of the samples in this report, a summary of the data, and references cited.


How was the data set created?

  1. From what previous works were the data drawn?

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

    Date: 2011 (process 1 of 2)
    Sample collection - Samples were collected from measured stratigraphic sections from the Tyonek, Beluga, and West Foreland Formations in the Tyonek and Talkeetna quadrangles

    Date: 2012 (process 2 of 2)
    Mercury injection capillary pressure analysis - Mercury injection capillary pressure analysis - Samples were submitted to PetroTech Associates, Houston, TX for mercury injection capillary pressure analysis. Following receipt of the samples, a representative portion of each was trimmed to fit the sample holders and examined under reflected light microscopy to note any irregularities that might affect the data quality. The rock surfaces were cleaned of any mold or dust and the samples then dried to a constant weight in a low temperature oven before being analyzed. During capillary pressure testing , the volume of mercury injected was measured at 118 pressure points from 1.64 to 59,500 psia. These data were then corrected for closure. The "closure" volume is the amount of mercury intrusion that occurs as the mercury conforms to the sample surface, filling any irregularities, prior to entering the pore system. The resultant data and comparative plots are provided in this data release. See manuscript for references.

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

    Finzel, E.S., Gillis, R.J., Ridgway, K.D., and LePain, D.L., 2009, Preliminary evaluation of basin margin exhumation and provenance of Cenozoic strata, Chuitna and Beluga rivers area, Cook Inlet forearc basin, Alaska: Preliminary Interpretive Report PIR 2009-4, Alaska Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.

    Online Links:

    Other_Citation_Details: 16 p
    Gillis, R.J., 2013, Overview of 2012 field studies: Upper Alaska Peninsula and west side of lower Cook Inlet, Alaska: Preliminary Interpretive Report PIR 2013-1, Alaska Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.

    Online Links:

    Other_Citation_Details: 48 p
    Gillis, R.J., LePain, D.L., Ridgway, K.D., and Finzel, E.S., 2009, A reconnaissance view of an unnamed fault near Capps Glacier, northwestern Cook Inlet basin, and its potential as a regional-scale, basin-controlling structure: Preliminary Interpretive Report PIR 2009-3, Alaska Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.

    Online Links:

    Other_Citation_Details: 9 p
    Helmold, K.P., LePain, D.L., Wilson, M.D., and Peterson, C.S., 2013, Petrology and reservoir potential of Tertiary and Mesozoic sandstones, Cook Inlet, Alaska: A preliminary analysis of outcrop samples collected during 2007-2010 field seasons: Preliminary Interpretive Report PIR 2013-5, Alaska Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.

    Online Links:

    Other_Citation_Details: 34 p
    Herriott, T.M., Wartes, M.A., Stanley, R.G., Lillis, P.G., Helmold, K.P., Decker, P.L., and Gillis, R.J., 2013, Oil-stained sandstones of the Upper Jurassic Naknek Formation and Upper Cretaceous Kaguyak Formation, Kamishak Bay area, lower Cook Inlet, Alaska (poster): AAPG Pacific Section Meeting, Monterey, CA, April 23, 2013: Poster and Presentation Herriott, T.M. and others, 2013, Alaska Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.

    Online Links:

    Other_Citation_Details: 1 sheet
    Hickey, J.J., Wilson, M.D., and Reifenstuhl, R.R., 2007, Petrographic study of 50 samples from the Tertiary sandstone of Cook Inlet, Alaska: potential tight gas reservoirs: Report of Investigation RI 2007-2, Alaska Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.

    Online Links:

    Other_Citation_Details: 64 p
    LePain, D.L., Lillis, P.G., Helmold, K.P., and Stanley, R.G., 2012, Migrated hydrocarbons in exposure of Maastrichtian nonmarine strata near Saddle Mountain, lower Cook Inlet, Alaska: Report of Investigation RI 2012-1, Alaska Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.

    Online Links:

    Other_Citation_Details: 13 p
    LePain, D.L., 2009, Preliminary results of recent geologic investigations in the Homer-Kachemak Bay area, Cook Inlet Basin: Progress during the 2006-2007 field season: Preliminary Interpretive Report PIR 2009-8, Alaska Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.

    Online Links:

    Other_Citation_Details: 187 p
    Loveland, A.M., and Associates, PetroTech, 2013, Mercury injection capillary pressure (MICP) results from outcrop samples in the Tyonek, Beluga, and West Foreland Formations, Tyonek and Talkeetna quadrangles, Alaska: Raw Data File RDF 2013-4, Alaska Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.

    Online Links:

    Other_Citation_Details: 5 p
    Loveland, A.M., 2010, Results of mercury-injection capillary pressure tests on outrcrop samples in the Tyonek area of Cook Inlet: Raw Data File RDF 2010-1, Alaska Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.

    Online Links:

    Other_Citation_Details: 102 p
    Reger, R.D., 2009, Reinterpretation of the Kaloa deposits near Granite Point, northwestern Cook Inlet, Alaska: Preliminary Interpretive Report PIR 2009-2, Alaska Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.

    Online Links:

    Other_Citation_Details: 8 p
    Shellenbaum, D.P., Gregersen, L.S., and Delaney, P.R., 2010, Top Mesozoic unconformity depth map of the Cook Inlet Basin, Alaska: Report of Investigation RI 2010-2, Alaska Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.

    Online Links:

    Other_Citation_Details: 1 sheet, scale 1:500,000
    Zippi, P.A., and Loveland, A.M., 2012, Palynological analysis of 228 outcrop samples from the Kenai, Seldovia, and Tyonek quadrangles, Cook Inlet region, Alaska: Raw Data File RDF 2012-1, Alaska Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.

    Online Links:

    Other_Citation_Details: 10 p


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

  1. How well have the observations been checked?

    This publication is intended to provide timely release of raw field and analytical data. The results and methodology provided by PetroTech Associates have not been reviewed by DGGS staff or others to assess the accuracy of the data. Cases in which the outcrop formation assignment is uncertain are query marked in the 'sample-location-details' table.

  2. How accurate are the geographic locations?

    Location coordinates were obtained using handheld GPS units with a typical error of 7 m or less. Sample coordinates represent the location of the bottom of the stratigraphic measured section from which each sample was collected.

  3. How accurate are the heights or depths?

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

    The spreadsheets used to generate the charts showing potential seal capacity (figures 3-6) were not provided to DGGS. The PetroTech Associates lab was able to analyze all of the MICP samples that were submitted. Additional MICP data releases for other Cook Inlet locations are planned.

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

    Not applicable


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 dataset is available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below).
Use_Constraints:
Any hard copies or published datasets utilizing these datasets 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. The user specifically agrees not to misrepresent these datasets, 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. The State of Alaska makes no express or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data 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 or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.

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

    Alaska Division of Geological & Geophysical Surveys
    3354 College Road
    Fairbanks, AK 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 website (<http://www.dggs.alaska.gov>) 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?

    RDF 2013-4

  3. What legal disclaimers am I supposed to read?

    The State of Alaska makes no expressed or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data 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 or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor 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: 12-Jul-2013
Metadata author:
Metadata manager
3354 College Road
Fairbanks, AK 99709-3707
USA

(907)451-5020 (voice)

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


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