Alaska Oil Discoveries

Transcription

1 Identifying new prospects in Alaska's North Slope trends. Chris Williams, MS., PG. Geoscience Advisor

2 Stratigraphic Column Era M.Y.A. Albian ~113 Formation Oil and Gas Producing Areas Kuvlum, Hammerhead. Ugnu, Badami, Sourdough. West Sak, Schrader Bluff, Nikaitchuk, Orion, Polaria, Tabasco. Tarn, Meltwater. Umiat, Fish Creek, Simpson, Pikka, Willow, Gubik, East Umiat, Square Lake, Wolf Creek, Oumalik, Meade. Nanuq, Nuna/Moraine, Cassin, Smith Bay. Point Thomson, Kuparuk, Point McIntyre, Miln Point, Fiord Kuparuk, Niakuk, Burger, Walakpa. Alpine, Lookout, Spark, Rendezvous. Fiord (Nechelik). South Barrow, East Barrow. Kemik. Prudhoe Bay, Northstar, Raven, Sandpiper, Kavik. Lisburne. Endicott, Liberty. March, 2018 Presentation Chris Williams 2/13

3 Nanushuk and Torok Trend Seismic Cross-section The Nanushuk formation topset shales are excellent at trapping hydrocarbons, therefore making stratigraphic trapping an important element in this trend. March, 2018 Presentation Chris Williams 3/13

4 Recent Discoveries Pikka (Horseshoe) Willow Smith Bay Operator Armstrong/Repsol ConocoPhillips/Anadarko Caelus Energy Alaska Location Colville Delta Northeast NPR-A NPR-A Depth TVD ~ 4,200 ~3,600 Trap Type Stratigraphic topset play Stratigraphic topset play Submarine Fan Complex Discovery Well Qugruk 3 Tiŋmiaq 2, 6 Tulimaniq 1 Net Pay <250 ( ) Nanushuk fm Nanushuk fm Torok fm Hydrocarbon Gravity 30 API 44 API API Ave. Porosity (log) 22% Water Saturation (~30%) Tested Flow Rates 2,100 bopd (vert.) 3,200 bopd (vert.) Field Production Rates <120k bopd (120k bopd) 40k to 100k bopd 200k bopd Estimated Ultimate Recovery 1,400 mmbo (1,200 MMbo) 300 MMbo 1,800 4,000 MMbo March, 2018 Presentation Chris Williams 4/13

5 Pikka and Willow Type Logs PIKKA WILLOW March, 2018 Presentation Chris Williams 5/13

6 Pikka Willow Horseshoe March, 2018 Presentation Chris Williams 6/13

7 Albian (~113 m.y.a.) Nanushuk Trend Map Pt. Barrow Smith Bay Reservoir quality sediments washed eastward off the Brooks Range were deposited, in sand-prone fluvial systems, marine sheet sands on the shelf and turbidite fan complexes further out into basin. Willow Pikka Prudhoe Bay March, 2018 Presentation Chris Williams 7/13

8 North Slope Area March, 2018 Presentation Chris Williams 8/13

9 Beneficial Properties to Map 1) Thermal maturity 2) Sand Distribution 3) Bedding thickness 4) Water saturation (Pay Isopach Mapping) 5) Faulting Patterns (Structural Mapping) 6) Grain Size Distribution (Stratigraphic Mapping) 7) Litho Facies Depositional Environment 8) Porosity 9) Permeability 10) Formation Pressures 11) Natural fractures (and orientation) Thermal Transformation of Kerogen 85 F (29.4 C) 220 F (104.4 C) 302 F (150 C) 356 F (180 C) March, 2018 Presentation Chris Williams 9/13 Sand Distribution

10 Play Analysis is a Systematic Approach to Geological Exploration that Overlaps Mapped Attributes to defines Regions of Higher Probability of Success. Play Analysis Attributes to Overlap Probabilities 100% 75% 75% 50% 50% 25% 25% 0% Gff40 March, 2018 Presentation Chris Williams 10/13 Source Rock Presence Thermal Maturity Temperature Migration Distance Sediment Distribution Reservoir Quality Thickness Clastic - Carbonate Porosity - Permeability Trapping Mechanisms Structural Stratigraphic Salt - Faults Hydrocarbon Production Oil Gas Rates API Gravity % CO2

11 Play Analysis is a Systematic Approach to Geological Exploration that Overlaps Mapped Attributes* to defines Regions of Higher Probability of Success. Attributes* Maps Reservoir Quality Thermal Maturity Trapping Mechanisms Probability of Success Map 100% 75% 75% 50% March, 2018 Presentation Chris Williams 11/13 50% 25% 25% 0%

12 Prospecting on Alaska s North Slope. After Performing Play Analysis, creating Geomodels and running Simulations are essential in determining economic viability. Reservoir Porosity Geomodel March, 2018 Presentation Chris Williams 12/13 Gff40 Cascade and Chinook, Developing the lower tertiary with the first FPSO in the US Gulf of Mexico Oil & Gas Journal, 2012

13 Thank You Chris Williams, MS., PG. Geoscience Advisor March, 2018 Presentation Chris Williams 13/13