DEVELOPMENT OF A 3-D DEPOSITIONAL MODEL OF BRAIDED-RIVER GRAVELS AND SANDS TO IMPROVE AQUIFER CHARACTERIZATION

2004 ◽  
pp. 139-169 ◽  
Author(s):  
IAN A. LUNT ◽  
JOHN S. BRIDGE ◽  
ROBERT S. TYE
Keyword(s):  
Depositional Model ◽  
Braided River ◽  
Aquifer Characterization

scholarly journals Stratigraphy and Depositional Model of Palaeogene Dongying Braided-River Delta Sandstones, L Field, Bohai Bay Basin, Offshore Eastern China

2019 ◽  
Vol 9 (1) ◽  
pp. 1
Author(s):  
Qianping Zhang ◽  
Zongbin Liu ◽  
Xinwu Liao ◽  
Hongying Li ◽  
Yujuan Liu ◽  
...  
Keyword(s):  
Eastern China ◽  
River Delta ◽  
Distribution Area ◽  
Bohai Bay ◽  
Depositional Model ◽  
Braided River ◽  
Bohai Bay Basin ◽  
Fluid Production ◽  
Production Knowledge ◽  
Channel Deposits

Fluid production of L field, Bohai Bay Basin, offshore eastern China is mainly from the Palaeogene Dongying D interval. The stratigraphy framework and depositional model of the braided-river delta system within the D interval are investigated using seismic, well log, core data and production response. The D interval is interpreted as having been deposited in a lowstand system tract. And two progradational successions are recognized, including in ascending order the D2 and D1. The younger sandstone in the D1 interval is of greater thickness and larger distribution area than the elder sandstone in the D2 interval. Six core facies and five log patterns are recognized and interpreted to be underwater distributary channels, levees, overbank splays, mouth bars, sheet sand and shalier interchannel deposits. Channel deposits occur along the trend of thickest D2 and D1 sandstones. The sandstones that flank each side of the channel deposits are interpreted to be levee and overbank splay deposits. The sandstones that develop at terminal distributary channel mouth are interpreted to be mouth bar and sheet sand deposits. Channel-flank deposits can form good-quality reservoir sandstones, but they contain interbedded siltstones and thus have lower porosity and permeability than do channel deposits. The facies distributions predicted for the D interval match trends of the daily total fluid production. Knowledge gained from study of the L field has application to the development of other fields with similar depositional and diagenetic histories.

Standardized Workflow for Aquifer Characterization in Neuquén Unconventional Oil & Gas Blocks

2020 ◽  
Author(s):  
Lisandro G. Rodríguez ◽  
Juan M. Reynaldi ◽  
John B. Angel Alvarez ◽  
Sebastian María ◽  
Betina Laurenzano ◽  
...  
Keyword(s):  
Aquifer Characterization ◽  
Unconventional Oil ◽  
Oil Gas

Lithostratigraphy of the Palaeoproterozoic Hekpoort Formation (Pretoria Group, Transvaal Supergroup), South Africa

2020 ◽  
Vol 123 (4) ◽  
pp. 655-668
Author(s):  
N. Lenhardt ◽  
W. Altermann ◽  
F. Humbert ◽  
M. de Kock
Keyword(s):  
South Africa ◽  
Bushveld Complex ◽  
Sedimentary Rocks ◽  
Type Locality ◽  
Large Igneous Province ◽  
Braided River ◽  
River Systems ◽  
The West ◽  
Igneous Province ◽  
Transvaal Supergroup

Abstract The Palaeoproterozoic Hekpoort Formation of the Pretoria Group is a lava-dominated unit that has a basin-wide extent throughout the Transvaal sub-basin of South Africa. Additional correlative units may be present in the Kanye sub-basin of Botswana. The key characteristic of the formation is its general geochemical uniformity. Volcaniclastic and other sedimentary rocks are relatively rare throughout the succession but may be dominant in some locations. Hekpoort Formation outcrops are sporadic throughout the basin and mostly occur in the form of gentle hills and valleys, mainly encircling Archaean domes and the Palaeoproterozoic Bushveld Complex (BC). The unit is exposed in the western Pretoria Group basin, sitting unconformably either on the Timeball Hill Formation or Boshoek Formation, which is lenticular there, and on top of the Boshoek Formation in the east of the basin. The unit is unconformably overlain by the Dwaalheuwel Formation. The type-locality for the Hekpoort Formation is the Hekpoort farm (504 IQ Hekpoort), ca. 60 km to the west-southwest of Pretoria. However, no stratotype has ever been proposed. A lectostratotype, i.e., the Mooikloof area in Pretoria East, that can be enhanced by two reference stratotypes are proposed herein. The Hekpoort Formation was deposited in a cratonic subaerial setting, forming a large igneous province (LIP) in which short-termed localised ponds and small braided river systems existed. It therefore forms one of the major Palaeoproterozoic magmatic events on the Kaapvaal Craton.

A Braided River

2013 ◽  
Author(s):  
John Tucker
Keyword(s):  
Braided River

He awa whiria—A “Braided River”: An Indigenous Māori Approach to Mixed Methods Research

2021 ◽  
pp. 155868982098402
Author(s):  
Rhiannon Martel ◽  
Matthew Shepherd ◽  
Felicity Goodyear-Smith
Keyword(s):  
Mixed Methods ◽  
New Zealand ◽  
North American ◽  
Mixed Methods Research ◽  
Mixed Methodology ◽  
Braided River ◽  
Research Framework ◽  
Research Philosophy

While literature on mixed methodology predominantly focuses on North American and European philosophical stances, non-Eurocentric worldviews and indigenous philosophies are also relevant to mixed methods research. This article aims to present the indigenous Māori worldview ( te ao Māori) and how this lends itself to mixed methods research, in a New Zealand European and Māori partnership, to conduct bicultural research. The authors use the Māori metaphor He awa whiria (braided river) to describe combining the strengths of two distinct worldviews into a “workable whole.” A framework brings together these two different paradigms as equals, incorporating both numerical and opinion-driven results. The authors illustrate this with a research example of creating a bicultural research framework, underpinned by mixed methods research philosophy.

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