Study on Genesis and Distribution of High Quality Reservoir in Chang3 Formation in Southwest Ordos Basin

2020 ◽  
pp. 3843-3852
Author(s):  
Jingzhe Guo ◽  
Qi Yang ◽  
Ya Li ◽  
Ming Zhao
Keyword(s):  
Ordos Basin ◽  
High Quality ◽  
High Quality Reservoir

scholarly journals Potential hydrocarbon reservoirs of Albian–Paleocene age in the Nuussuaq Basin, West Greenland

2017 ◽  
pp. 49-52
Author(s):  
Morten L. Hjuler ◽  
Niels H. Schovsbo ◽  
Gunver K. Pedersen ◽  
John R. Hopper
Keyword(s):  
Hydrocarbon Exploration ◽  
Reservoir Rock ◽  
High Quality ◽  
West Greenland ◽  
Petroleum Systems ◽  
Oil Seeps ◽  
Reservoir Potential ◽  
Volcanic Reservoirs ◽  
High Quality Reservoir ◽  
Volcanic Series

The onshore Nuussuaq Basin in West Greenland is important for hydrocarbon exploration since many of the key petroleum systems components are well exposed and accessible for study. The basin has thus long served as an analogue for offshore exploration. The discovery of oil seeps on Disko, Nuussuaq, Ubekendt Ejland, and Svartenhuk Halvø (Fig. 1) in the early 1990s resulted in exploration onshore as well. In several wells, oil stains were observed in both the siliciclastic sandstone and in the volcanic series. An important aspect of any petroleum system is a high quality reservoir rock. The aim of this paper is to review petrophysical aspects of the reservoir potential of key stratigraphic intervals within the Nuussuaq and West Greenland Basalt groups. Reservoir parameters and porosity–permeability trends for potential siliciclastic and volcanic reservoirs within the relevant formations of the Nuussuaq Basin are discussed below.

The Oil Accumulation Law of Putaohua Oil Layer in Taidongarea, Songliao Basin

2013 ◽  
Vol 868 ◽  
pp. 142-145
Author(s):  
Zai Qiang Wang
Keyword(s):  
Songliao Basin ◽  
High Quality ◽  
Oil Accumulation ◽  
Single Fault ◽  
Double Peaks ◽  
Core Logging ◽  
Match Type ◽  
Reservoir Type ◽  
Distributary Channel ◽  
High Quality Reservoir

The research on Putaohua oil layer in Taidong,Songliao Basin using core,logging and seisimic information shows that oil is divided into belts from east to west influenced by faults striking from south to north and oil potential is getting poorer from east to west, oil is mainly distributed in the middle of Putaohua oil layer showing double peaks, and the main reservoir type is fault-lithology reservoir formd by NStrending faults and NW trending channel sandbody on the slope dipping to the southeast. According to the match type between fault and sandbody in single trap ,we draw the accumulation law that oil accumulation area is controlled by single fault-terrace belt; the high-quality reservoir is composed of underwater distributary channel and river sheet sand; vertical oil accumulation height is influenced by fault lateral sealing ability; and oil accumulation horizon is controlled by the match type between fault and sandbody.

scholarly journals A near-shore clastic-carbonate mixing mode in a continental rift basin (early Oligocene, eastern Shijiutuo Uplift, Bohai Bay Basin, China): sedimentology, reservoir characteristics and exploration practice

2020 ◽  
Vol 9 (1) ◽  
Author(s):  
Xiao-Feng Du ◽  
Hao Liu ◽  
Xiao-Bo Huang ◽  
Zhang-Qiang Song ◽  
Wei Xu ◽  
...  
Keyword(s):  
Oil And Gas ◽  
Steep Slope ◽  
Bohai Bay ◽  
Rift Basin ◽  
Bohai Bay Basin ◽  
High Quality ◽  
Early Oligocene ◽  
Near Shore ◽  
Shahejie Formation ◽  
High Quality Reservoir

Abstract A comprehensive sedimentary and reservoir analysis was conducted based on seismic, well logging, core and relative test data, taking Members 1 and 2 of Shahejie Formation of the early Oligocene in the steep slope belt, eastern Shijiutuo Uplift (STU), Bohai Bay Basin (BBB) as a case. The study indicates that a near-shore mixed fan deposit formed in the study area and developed characteristics and pattern of a high-quality reservoir. The mixed clastic-carbonate rocks constitute Members 1 and 2 of Shahejie Formation which developed along the steep slope belt and is named as a near-shore mixed fan. The mixed fan of the study area is mainly composed of microfacies of proximal channel, mixed deposited channel, mixed clastic beach, mixed bioclastic (grain) beach, with vertical multi-stage superimposition feature, and basically a similar shape as modern near-shore fans. It constitutes a new depositional type developing in the steep slope belt of a characteristic and complex lacustrine rift basin in the study area. This mixed fan in the steep slope of eastern STU is controlled by comprehensive factors including tectonics, clastic material supply, climate, palaeogeomorphology and hydrodynamic conditions. The reservoir quality of Members 1 and 2 of Shahejie Formation of eastern STU is, however, actually controlled by the sedimentary environment and diagenesis processes. Coarse-grained mixed rocks of near-shore fans, rich in bioclastics, can form excellent reservoirs, characterized by resistance to compaction, easy to dissolution, little influenced by burial depth and high production of oil and gas, which enable them become key exploration targets of medium-deep strata of BBB. Analyses of high-quality reservoir, its controlling factors and the oil and gas exploration implications of the near-shore mixed fan developing in the study area give a deeper insight into discussions of the same type of mixed rocks of other lacustrine rift basins worldwide.

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