Timothy S. Collett

Overview of the Monitoring Program in the Alaska North Slope Extended-Duration Gas Production Test from Gas Hydrate

Abstract As a part of an extended-duration gas production test conducted under the JOGMEC-DOE-USGS Collaborative Gas Hydrate R&D Project in Alaska, one of the main objectives was to understand the behavior of gas hydrate formation and the production system during long-term depres...

Operational Overview of the JOGMEC-DOE-USGS Gas Production Test from Gas Hydrate on the Alaska North Slope

Abstract To understand the long-term production behavior of gas hydrate, an extended-duration gas production test was conducted under the JOGMEC-DOE-USGS Collaborative Gas Hydrate R&D Project in Alaska. The production test began in September 2023 using an electric submersible pum...

Geological & Petrophysical Findings from Production Test Wells of Gas Hydrate Reservoirs at the Kuparuk State 7–11–12 Site in the Prudhoe Bay Unit on the Alaska North Slope

Abstract As part of a long-term production test targeting gas hydrate reservoirs at the Kuparuk State 7–11–12 site in the Prudhoe Bay Unit on the Alaska North Slope, two production wells (PTW-1 and PTW-2) and one monitoring well (GDW) were drilled in 2023. This study advances res...

Alaska North Slope HYDRATE 02 Geo Data Well Multicomponent Inversion and NMR Log and Core Analysis of the B1 Sand Gas Hydrate Reservoir

Abstract The Collaborative Gas Hydrate R&D Project in Alaska, a joint initiative by the Japan Organization for Metals and Energy Security, the U.S. Department of Energy, and the U.S. Geological Survey, aims to advance understanding of gas hydrate reservoir systems and their produ...

Strength, Stiffness, and Poisson’s Ratio Measurements for Cements Used in the Well Completions for the Extended-Duration Gas Production Test on the Alaskan North Slope

Abstract As part of an extended-duration production test from a natural gas hydrate reservoir on the Alaska North Slope, a suite of optical-fiber sensors was encased in the completion cement to provide stable downhole monitoring around each of the four project wells. How the sens...

Lithological Control of Gas Hydrate Saturation Determined by Pressure Core Analysis in Subpermafrost Reservoirs of the Alaska North Slope (HYDRATE-02 Geo Data Well)

Abstract Quantitatively degassing pressure cores by controlled depressurization is a key approach to characterizing gas hydrate reservoirs by measuring the gas hydrate saturation (Sh) of sediments. We measured Sh for 53 core sections from the Alaska North Slope during the JOGMEC-...

Characterizing Physical Properties and Controls on Gas Hydrate Saturation Using Borehole Log and Core Data at the Alaska North Slope Gas Hydrate Production Test Site

Abstract The JOGMEC-DOE-USGS Collaborative Gas Hydrate R&D Project in Alaska has acquired a wealth of geophysical data at the Kuparuk State 7-11-12 site on the Alaska North Slope to facilitate site characterization and interpretation of the 2023–2024 extended duration reservoir r...