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Title: Investigation of gas hydrate-bearing sandstone reservoirs at the "Mount Elbert" stratigraphic test well, Milne Point, Alaska

Abstract

In February 2007, the U.S. Department of Energy, BP Exploration (Alaska), Inc., and the U.S. Geological Survey conducted an extensive data collection effort at the "Mount Elbert #1" gas hydrates stratigraphic test well on the Alaska North Slope (ANS). The 22-day field program acquired significant gas hydrate-bearing reservoir data, including a full suite of open-hole well logs, over 500 feet of continuous core, and open-hole formation pressure response tests. Hole conditions, and therefore log data quality, were excellent due largely to the use of chilled oil-based drilling fluids. The logging program confirmed the existence of approximately 30 m of gashydrate saturated, fine-grained sand reservoir. Gas hydrate saturations were observed to range from 60% to 75% largely as a function of reservoir quality. Continuous wire-line coring operations (the first conducted on the ANS) achieved 85% recovery through 153 meters of section, providing more than 250 subsamples for analysis. The "Mount Elbert" data collection program culminated with open-hole tests of reservoir flow and pressure responses, as well as gas and water sample collection, using Schlumberger's Modular Formation Dynamics Tester (MDT) wireline tool. Four such tests, ranging from six to twelve hours duration, were conducted. This field program demonstrated the ability to safelymore » and efficiently conduct a research-level openhole data acquisition program in shallow, sub-permafrost sediments. The program also demonstrated the soundness of the program's pre-drill gas hydrate characterization methods and increased confidence in gas hydrate resource assessment methodologies for the ANS.« less

Authors:
;  [1];  [2];  [3];  [4];  [3]
  1. ASRC Energy Services, Anchorage, AK
  2. USGS, Denver, CO
  3. BP Exploration (Alaska) Inc., Anchorage, AK
  4. RPS Energy Canada, Calgary, Alberta, Canada
Publication Date:
Research Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR; BP Exploration (Alaska), Inc., Anchorage, AK; U.S. Geological Survey, Denver, CO
Sponsoring Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR; BP Exploration (Alaska), Inc., Anchorage, AK; U.S. Geological Survey, Denver, CO
OSTI Identifier:
936572
Report Number(s):
DOE/NETL-IR-2008-208; NETL-TPR-2165
TRN: US200818%%770
DOE Contract Number:  
None cited
Resource Type:
Conference
Resource Relation:
Conference: 6th International Conference on Gas Hydrates (ICGH 2008), Vancouver, BC, Canada, July 6-10, 2008
Country of Publication:
United States
Language:
English
Subject:
03 NATURAL GAS; ALASKA; NATURAL GAS DEPOSITS; STRATIGRAPHY; GAS HYDRATES; WELL LOGGING; SITE CHARACTERIZATION; gas hydrates; coring; Alaska North Slope; formation pressure testing

Citation Formats

Boswell, R M, Hunter, R, Collett, T, Digert, S, Hancock, S, Weeks, M, and Mt. Elbert Science Team. Investigation of gas hydrate-bearing sandstone reservoirs at the "Mount Elbert" stratigraphic test well, Milne Point, Alaska. United States: N. p., 2008. Web.
Boswell, R M, Hunter, R, Collett, T, Digert, S, Hancock, S, Weeks, M, & Mt. Elbert Science Team. Investigation of gas hydrate-bearing sandstone reservoirs at the "Mount Elbert" stratigraphic test well, Milne Point, Alaska. United States.
Boswell, R M, Hunter, R, Collett, T, Digert, S, Hancock, S, Weeks, M, and Mt. Elbert Science Team. 2008. "Investigation of gas hydrate-bearing sandstone reservoirs at the "Mount Elbert" stratigraphic test well, Milne Point, Alaska". United States. https://www.osti.gov/servlets/purl/936572.
@article{osti_936572,
title = {Investigation of gas hydrate-bearing sandstone reservoirs at the "Mount Elbert" stratigraphic test well, Milne Point, Alaska},
author = {Boswell, R M and Hunter, R and Collett, T and Digert, S and Hancock, S and Weeks, M and Mt. Elbert Science Team},
abstractNote = {In February 2007, the U.S. Department of Energy, BP Exploration (Alaska), Inc., and the U.S. Geological Survey conducted an extensive data collection effort at the "Mount Elbert #1" gas hydrates stratigraphic test well on the Alaska North Slope (ANS). The 22-day field program acquired significant gas hydrate-bearing reservoir data, including a full suite of open-hole well logs, over 500 feet of continuous core, and open-hole formation pressure response tests. Hole conditions, and therefore log data quality, were excellent due largely to the use of chilled oil-based drilling fluids. The logging program confirmed the existence of approximately 30 m of gashydrate saturated, fine-grained sand reservoir. Gas hydrate saturations were observed to range from 60% to 75% largely as a function of reservoir quality. Continuous wire-line coring operations (the first conducted on the ANS) achieved 85% recovery through 153 meters of section, providing more than 250 subsamples for analysis. The "Mount Elbert" data collection program culminated with open-hole tests of reservoir flow and pressure responses, as well as gas and water sample collection, using Schlumberger's Modular Formation Dynamics Tester (MDT) wireline tool. Four such tests, ranging from six to twelve hours duration, were conducted. This field program demonstrated the ability to safely and efficiently conduct a research-level openhole data acquisition program in shallow, sub-permafrost sediments. The program also demonstrated the soundness of the program's pre-drill gas hydrate characterization methods and increased confidence in gas hydrate resource assessment methodologies for the ANS.},
doi = {},
url = {https://www.osti.gov/biblio/936572}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2008},
month = {1}
}

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