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A series of short and steep unidirectionally migrating deep-water channels, which are typically without levees and migrate progressively northeastward, are identified in the Baiyun depression, Pearl River Mouth Basin. Using three-dimensional seismic and well data, the current study documents their morphology, internal architecture, and depositional history, and discusses the distribution and depositional controls on the bottom current–reworked sands within these channels.

Unidirectionally migrating deep-water channels consist of different channel-complex sets (CCSs) that are, overall, short and steep, and their northeastern walls are, overall, steeper than their southwestern counterparts. Within each CCS, bottom current–reworked sands in the lower part grade upward into muddy slumps and debris-flow deposits and, finally, into shale drapes.

Three stages of CCSs development are recognized: (1) the early lowstand incision stage, during which intense gravity and/or turbidity flows versus relatively weak along-slope bottom currents of the North Pacific intermediate water (NPIW-BCs) resulted in basal erosional bounding surfaces and limited bottom current–reworked sands; (2) the late lowstand lateral-migration and active-fill stage, with gradual CCS widening and progressively northeastward migration, characterized by reworking of gravity- and/or turbidity-flow deposits by vigorous NPIW-BCs and the CCSs being mainly filled by bottom current–reworked sands and limited slumps and debris-flow deposits; and (3) the transgression abandonment stage, characterized by the termination of the gravity and/or turbidity flows and the CCSs being widely draped by marine shales. These three stages repeated through time, leading to the generation of unidirectionally migrating deep-water channels.

The distribution of the bottom current–reworked sands varies both spatially and temporally. Spatially, these sands mainly accumulate along the axis of the unidirectionally migrating deep-water channels and are preferentially deposited to the side toward which the channels migrated. Temporally, these sands mainly accumulated during the late lowstand lateral-migration and active-fill stage.

The bottom current–reworked sands developed under the combined action of gravity and/or turbidity flows and along-slope bottom currents of NPIW-BCs. Other factors, including relative sea level fluctuations, sediment supply, and slope configurations, also affected the formation and distribution of these sands. The proposed distribution pattern of the bottom current–reworked sands has practical implications for predicting reservoir occurrence and distribution in bottom current–related channels.

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This article concentrates on the question, Which parameters govern recovery factor (RF) behavior in channelized turbidite reservoirs? The objective is to provide guidelines for the static and dynamic modeling of coarse reservoir-scale models by providing a ranking of the investigated geologic and reservoir engineering parameters based on their relative impact on RF. Once high-importance (H) parameters are understood, then one can incorporate them into static and dynamic models by placing them explicitly into the geologic model. Alternatively, one can choose to represent their effects using effective properties (e.g., pseudorelative permeabilities). More than 1700 flow simulations were performed on geologically realistic three-dimensional sector models at outcrop-scale resolution. Waterflooding, gas injection, and depletion scenarios were simulated for each geologic realization. Geologic and reservoir engineering parameters are grouped based on their impact on RF into H, intermediate-importance (M), and low-importance (L) categories. The results show that, in turbidite channel reservoirs, dynamic performance is governed by architectural parameters such as channel width, net-to-gross, and degree of amalgamation, and parameters that describe the distribution of shale drapes, particularly along the base of channel elements. The conclusions of our study are restricted to light oils and relatively high-permeability channelized turbidite reservoirs. The knowledge developed in our extensive simulation study enables the development of a geologically consistent and efficient dynamic modeling approach. We briefly describe a methodology for generating effective properties at multiple geologic scales, incorporating the effect of channel architecture and reservoir connectivity into fast simulation models.
Show more American Association of Petroleum Geologists (AAPG)
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Some bold and creative geologists, full of the entrepreneur spirit, helped turn the Falkland Islands into a success story.

American Association of Petroleum Geologists (AAPG)
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This month’s column deals with seismic waveforms and facies classification.

American Association of Petroleum Geologists (AAPG)
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Closest of trends: Geoscientists experienced a huge “aha!” moment that started with the realization that Pennsylvania’s Marcellus Shale and Texas’ Eagle Ford Shale have a lot in common.

American Association of Petroleum Geologists (AAPG)
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The discrimination of fluid content and lithology in a reservoir is an important characterization that has a bearing on reservoir development and its management.

American Association of Petroleum Geologists (AAPG)
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A new, specially funded, designated speaker has been added to the prestigious AAPG Distinguished Lecture program for the 2012-13 season.

American Association of Petroleum Geologists (AAPG)
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For more than 100 years, shale oil has referred to the product of pyroly­sis of oil shale, whereas oil shale refers to organic rich (kerogen) rock that has never reached the oil window.

American Association of Petroleum Geologists (AAPG)
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Spreading the word: Nine speakers have been selected for AAPG’s prestigiousDistinguished Lecture program for the 2012-13 North American tours.

American Association of Petroleum Geologists (AAPG)
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Exotic beauty: Malaysia’s Langkawi Geopark is a beautiful creation for tourists. For geologists, it’s paradise.

American Association of Petroleum Geologists (AAPG)
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In-Person Training
Houston Texas United States 24 January, 2017 25 January, 2017 33528 Desktop /Portals/0/PackFlashItemImages/WebReady/gtw-deepwater-shelf-2016-hero.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true Engineering, Development and Operations, Reservoir Characterization, Geochemistry and Basin Modeling, Basin Modeling, Geophysics, Clastics, Sedimentology and Stratigraphy, Deep Sea / Deepwater, Deepwater Turbidites, Shelf Sand Deposits, Structure, Structural Analysis (Other), Fractured Carbonate Reservoirs, Stratigraphic Traps, Subsalt Traps
 
Houston, Texas, United States
24-25 January 2017

The goal of this event is to bring together new technologies and developments in both exploring for new frontiers and developing known provinces in both deepwater and shelf environments. The event brings together geology, geochemistry, engineering, and geophysics.

Yangon Myanmar 21 February, 2017 22 February, 2017 34913 Desktop /Portals/0/PackFlashItemImages/WebReady/AAPG-EAGE-MGS-Myanmar-Geosciences-Conference-Hero-v2.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true Structure, Geochemistry and Basin Modeling, Sedimentology and Stratigraphy, Business and Economics, Engineering, Basin Modeling, Petroleum Systems, Oil and Gas Analysis, Maturation, Clastics, Carbonates, Evaporites, Economics, Reservoir Characterization, Development and Operations, Production
 
Yangon, Myanmar
21-22 February 2017

"Mapping and Interpreting Deep Water Clastic Reservoirs"

Primary Instructor:
Robert C. Shoup, Subsurface Consultants & Associates LLC, Houston, Texas, USA.

Venue:
Sule Shangri-La Yangon Hotel

Pricing:
AAPG/EAGE/MGS Members : USD445
Non-Members : USD495

Fee includes course materials, lunch and two breaks.


The organizers reserve the right to cancel or reschedule courses in the event of insufficient registrations. Every effort will be made to give attendees no less than 7 business days notice of cancellation. The organizers will not be responsible for any costs incurred due to course cancellation.


Yangon Myanmar 25 February, 2017 28 February, 2017 34027 Desktop /Portals/0/PackFlashItemImages/WebReady/AAPG-EAGE-MGS-Myanmar-Geosciences-Conference-Hero-v2.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true Structure, Geochemistry and Basin Modeling, Sedimentology and Stratigraphy, Business and Economics, Engineering, Basin Modeling, Petroleum Systems, Oil and Gas Analysis, Maturation, Clastics, Carbonates, Evaporites, Economics, Reservoir Characterization, Development and Operations, Production
 
Yangon, Myanmar
25-28 February 2017

The Myanmar Geosciences Society will offer a 4-day/3-night field trip to the Kalaw Basin to visit Mesozoic sediments of Kialaw Basin and view conspicuous surface geologic expressions of Sagaing Strike Slip Fault and Shan Boundary fault (Suture Zone), as well as various Paleozoic to Tertiary outcrops along the road sections.

Dar Es Salaam Tanzania 06 March, 2017 08 March, 2017 33259 Desktop /Portals/0/PackFlashItemImages/WebReady/sc-ar-sequence-stratigraphy-tanzania-hero-1.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true Sedimentology and Stratigraphy, Business and Economics, Engineering, Clastics, Carbonates, Reserve Estimation, Reservoir Characterization, Production, Bitumen/Heavy Oil, Coalbed Methane, Stratigraphic Traps, Subsalt Traps
 
Dar Es Salaam, Tanzania
6-8 March 2017

The paradigm of sequence stratigraphy has entered a new phase and these once revolutionary concepts are now applied in pre-drill exploration at ever-increasing resolution. The concepts also prove useful in production geology, especially in enhanced oil recovery efforts in previously abandoned fields.

Windhoek Namibia 10 April, 2017 12 April, 2017 33241 Desktop /Portals/0/PackFlashItemImages/WebReady/sc-ar-sequence-stratigraphy-a-predictive-tool-for-e-p-industry-hero-1.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true Engineering, Production, Reservoir Characterization, Sedimentology and Stratigraphy, Carbonates, Clastics, Coalbed Methane, Bitumen/Heavy Oil, Subsalt Traps, Stratigraphic Traps, Business and Economics, Reserve Estimation
 
Windhoek, Namibia
10-12 April 2017

The paradigm of sequence stratigraphy has entered a new phase and these once revolutionary concepts are now applied in pre-drill exploration at ever-increasing resolution. The concepts also prove useful in production geology, especially in enhanced oil recovery efforts in previously abandoned fields.

Kampala Uganda 29 May, 2017 31 May, 2017 33266 Desktop /Portals/0/PackFlashItemImages/WebReady/sc-ar-sequence-stratigraphy-uganda-hero-1.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true Sedimentology and Stratigraphy, Business and Economics, Engineering, Clastics, Carbonates, Reserve Estimation, Reservoir Characterization, Production, Bitumen/Heavy Oil, Coalbed Methane, Stratigraphic Traps, Subsalt Traps
 
Kampala, Uganda
29-31 May 2017

The paradigm of sequence stratigraphy has entered a new phase and these once revolutionary concepts are now applied in pre-drill exploration at ever-increasing resolution. The concepts also prove useful in production geology, especially in enhanced oil recovery efforts in previously abandoned fields.

Online Training
24 October, 2013 24 October, 2013 1499 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-geomechanical-data-from-petrophysical-logs.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
24 October 2013

This e-symposium will be introducing signal processing techniques as a means to maximize extracting geomechanical data from petrophysical logs.

13 December, 2012 13 December, 2012 1494 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-petrophysics-of-shales.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
13 December 2012

The course will review core data, petrophysical comparisons, rock physics modeling (including pseudo logs and mechanical properties).

08 December, 2011 08 December, 2011 1480 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-connectivity-in-fluvial-systems.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
8 December 2011

This e-symposium focuses on methods for predicting connectivity within clastic fluvial systems.

01 January, 2013 01 January, 9999 1459 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-cc-giant-oil-and-gas-fields.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
1 January 2013 - 1 January 9999

There are more approximately 1,000 oil and gas fields in the world that have been classified as "giant," containing more than 500 million barrels of recoverable oil and /or 3 trillion cubic feet of gas.

07 November, 2013 07 November, 2013 1500 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-from-qualitative-to-quantitative-interpretations.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
7 November 2013

This e-symposium presentation places the interpretation of deep-water turbidites discernible in 3-D seismic inversion data within a geological context.

28 April, 2011 28 April, 2011 1471 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-niobrara-petroleum-system-a-major-tight-resource-play.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
28 April 2011

The Niobrara Petroleum System of the U.S. Rocky Mountain Region is a major tight petroleum resource play.

17 February, 2011 17 February, 2011 1469 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-siliclastic-sequence-stratigraphy.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
17 February 2011

This presentation is designed for exploration/production geologists and geological managers or reservoir engineers.

11 November, 2010 11 November, 2010 1465 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-geochemical-evaluation-of-eagle-ford-group-source.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
11 November 2010

This e-symposium is ideal for geologists, geophysicists, engineers and other geoscientists who are involved in gas shale exploration and production.

29 April, 2010 29 April, 2010 1457 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-seismic-stratigraphy-seismic-geomorphology-of-deep-water.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
29 April 2010

This presentation will focus on the seismic stratigraphic and seismic geomorphologic expression of deep-water deposits, including both reservoir and non-reservoir facies.

22 October, 2009 22 October, 2009 1452 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-fluvial-stratigraphy.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
22 October 2009

This course can help you gain the ability to describe the complex and highly variable reservoirs, which are typified by complex internal heterogeneity.

14 February, 3000 14 February, 3000 7817 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-generic-hero.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
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