Distribution Characteristics and Main Controlling Factors of Oil and Gas in the Bohai Sea Area

Based on the analysis of the relationships between the conditions of structures, sedimentations, source rocks, cap rocks, faults, oil and gas migration passages and traps and hydrocarbon accumulation, the controlling factors of hydrocarbon accumulation and distribution was studied in Talaha-changjiaweizi area. It is held that the source rocks control the hydrocarbon vertical distribution, the drainage capabilities control the hydrocarbon plane distribution, fracture belts control the hydrocarbon accumulation of Talaha syncline, underwater distributary channel is a favorable accumulation environment and reservoir physical properties control the oil and water distributions. Therefore, it is concluded that source rocks, fracture belts, sedimentary microfacies and reservoir physical properties are the main controlling factors of hydrocarbon accumulation and distribution in Talaha-changjiaweizi area.

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Pore Structure Characterization and the Controlling Factors of the Bakken Formation

Energies ◽

10.3390/en11112879 ◽

2018 ◽

Vol 11 (11) ◽

pp. 2879 ◽

Cited By ~ 6

Author(s):

Yuming Liu ◽

Bo Shen ◽

Zhiqiang Yang ◽

Peiqiang Zhao

Keyword(s):

Pore Structure ◽

Oil And Gas ◽

Vitrinite Reflectance ◽

Total Pore Volume ◽

Nitrogen Adsorption ◽

Controlling Factors ◽

Structure Characterization ◽

Bakken Formation ◽

Main Controlling Factors ◽

Bakken Shale

The Bakken Formation is a typical tight oil reservoir and oil production formation in the world. Pore structure is one of the key factors that determine the accumulation and production of the hydrocarbon. In order to study the pore structures and main controlling factors of the Bakken Formation, 12 samples were selected from the Bakken Formation and conducted on a set of experiments including X-ray diffraction mineral analysis (XRD), total organic carbon (TOC), vitrinite reflectance (Ro), and low-temperature nitrogen adsorption experiments. Results showed that the average TOC and Ro of Upper and Lower Bakken shale is 10.72 wt% and 0.86%, respectively. The Bakken Formation develops micropores, mesopores, and macropores. However, the Upper and Lower Bakken shale are dominated by micropores, while the Middle Bakken tight reservoir is dominated by mesopores. The total pore volume and specific surface area of the Middle Bakken are significantly higher than those of the Upper and Lower Bakken, indicating that Middle Bakken is more conducive to the storage of oil and gas. Through analysis, the main controlling factors for the pore structure of the Upper and Lower Bakken shale are TOC and maturity, while those for Middle Bakken are clay and quartz contents.

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Oil and Gas Distribution and Main Controlling Factors in Foreland Basins, South America

Springer Series in Geomechanics and Geoengineering - Proceedings of the International Field Exploration and Development Conference 2019 ◽

10.1007/978-981-15-2485-1_295 ◽

2020 ◽

pp. 3186-3198

Author(s):

Ya-ming Liu

Keyword(s):

South America ◽

Oil And Gas ◽

Controlling Factors ◽

Foreland Basins ◽

Gas Distribution ◽

Main Controlling Factors

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Sequence stratigraphy of the lacustrine rift basin in the Paleogene system of the Bohai Sea area: Architecture mode, deposition filling pattern, and response to tectonic rifting processes

Interpretation ◽

10.1190/int-2019-0146.1 ◽

2020 ◽

Vol 8 (2) ◽

pp. SF57-SF79

Author(s):

Changgui Xu ◽

Lu Huan ◽

Song Zhangqiang ◽

Jia Donghui

Keyword(s):

Bohai Sea ◽

Rift Basin ◽

Third Order ◽

Sequence Stratigraphic ◽

The Bohai Sea ◽

Stratigraphic Model ◽

Architectural Patterns ◽

Sequence Boundaries ◽

Sea Area ◽

System Tract

The Bohai Sea area is a complex lacustrine rift basin characterized by multistage rifts, polycycle superimpositions, and multiple genetic mechanisms. We recognized three types of sequence boundaries from the Paleogene strata of offshore Bohai, including 2 first-, 3 second-, and 10 third-order sequence boundaries. The third-order wedges, composed of the low-stand system tract (LST), lake expansion system tract (EST), and high-stand system tract (HST), are significant for hydrocarbon exploration. The sequence stratigraphic patterns vary in different periods. We discovered that the LST and EST are mainly developed in the rifting stage, whereas the HST is developed in the subsidence stage. Sequences developed in different depressions present significant variations, but the migration of the depocenter from the margin to the center during basin evolution can still be clearly recognized. Vertically, episodic tectonism plays an important role in controlling the formation of sequence boundaries, sequence structural features, and sequence architectural patterns. However, various rift basin marginal tectonics control the lateral sequence architectures. Because each structure belt is characterized by a unique sequence framework due to the strong influence of basin rifting processes, we establish a corresponding sequence stratigraphic model for the specific tectonic environment using process-based sequence stratigraphic methods.

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The distribution characteristics of aerosol and CCN over the Bohai-sea gulf area, China

10.1063/1.4803403 ◽

2013 ◽

Author(s):

Ying Duan ◽

Jing Duan ◽

Yanshuo Qin

Keyword(s):

Bohai Sea ◽

Distribution Characteristics ◽

The Bohai Sea

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Spatial Distribution Characteristics of Oil Spills in the Bohai Sea Based on Satellite Remote Sensing and GIS

Journal of Coastal Research ◽

10.2112/si90-020.1 ◽

2019 ◽

Vol 90 (sp1) ◽

pp. 164 ◽

Cited By ~ 1

Author(s):

Lei Bing ◽

Qian-Guo Xing ◽

Xin Liu ◽

Na-Na Zou

Keyword(s):

Remote Sensing ◽

Spatial Distribution ◽

Satellite Remote Sensing ◽

Bohai Sea ◽

Oil Spills ◽

Remote Sensing And Gis ◽

Distribution Characteristics ◽

The Bohai Sea ◽

Spatial Distribution Characteristics

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Spatial distribution characteristics of sea-ice-hazard risk in Bohai, China

Annals of Glaciology ◽

10.3189/2013aog62a303 ◽

2013 ◽

Vol 54 (62) ◽

pp. 73-79 ◽

Cited By ~ 15

Author(s):

Wei Gu ◽

Chengyu Liu ◽

Shuai Yuan ◽

Ning Li ◽

Jinlong Chao ◽

...

Keyword(s):

Spatial Distribution ◽

Sea Ice ◽

Bohai Sea ◽

Hazard Index ◽

Bohai Bay ◽

Distribution Characteristics ◽

The Bohai Sea ◽

Hazard Risk ◽

Spatial Distribution Characteristics ◽

Marine Navigation

AbstractSea-ice hazard causes serious harm to aquaculture, marine navigation, offshore oil production and other activities in the Bohai Sea, China. To study the spatial distribution characteristics of sea-ice-hazard risk in Bohai is therefore desirable. The thickness and area of sea ice in the Bohai Sea during the winters (December–March) of 1987–2011 were estimated using data from the NOAA (US National Oceanic and Atmospheric Administration) satellite. The sea-ice thickness was converted into a sea-ice-hazard index after defining this index, and the different sea-ice-hazard risk grades were classified. The occurrence probability of sea-ice hazard was also calculated using fuzzy risk theory, and the spatial distribution characteristics of sea-ice-hazard risk in the Bohai Sea were studied. The results show that the sea-ice-hazard risk for offshore aquaculture decreased as the offshore distance increased. All the oilfields in Liaodong Bay are influenced by sea-ice hazard, two of the fields in Bohai Bay are slightly affected and the remaining fields are not influenced. The risk for marine navigation is related to the location of the port and the distance from the port. The risk in the port area is the highest; it is reduced by more than 30% at distances 10 km away from the port.

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Characteristics and controlling factors of deep buried-hill reservoirs in the BZ19-6 structural belt, Bohai sea area

Natural Gas Industry B ◽

10.1016/j.ngib.2019.01.011 ◽

2019 ◽

Vol 6 (4) ◽

pp. 305-316 ◽

Cited By ~ 1

Author(s):

Mingcai Hou ◽

Haiyang Cao ◽

Huiyong Li ◽

Anqing Chen ◽

Ajuan Wei ◽

...

Keyword(s):

Bohai Sea ◽

Controlling Factors ◽

Sea Area ◽

Buried Hill

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Main Controlling Factors of Hydrocarbon Accumulation at Different Phases: A Study on the Main Fault Depression Zones of Central H Basin

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.733.39 ◽

2015 ◽

Vol 733 ◽

pp. 39-42

Author(s):

Zi Li Fan

Keyword(s):

Early Phase ◽

Oil And Gas ◽

Late Phase ◽

Controlling Factors ◽

Source Rocks ◽

Delta Front ◽

Oil And Gas Exploration ◽

Gas Accumulation ◽

Main Controlling Factors ◽

Main Fault

To understand the oil and gas accumulation rules and main controlling factors of H Basin at different phases, approaches such as reservoir dissection and analysis on the spatial allocation of reservoir accumulation conditions are adopted to divide the reservoir of the main fault depression zones of central H Basin into early and late phases. The widely-spread oil and gas at early phase are obviously more than that of the late phase. The main controlling factors of reservoir accumulation at early phase include source rocks area, antithetic faults - tilted upheavals and sand body of fan delta front subfacies while that of the late phase include sources rocks area, inverted structure and long-term developed fractures. The achievement of the study expounded in this paper is significantly important to correctly understand the oil and gas accumulation rules of complicated faulted-block fields and guide the oil and gas exploration activities.

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