Oil and Gas Prospects in the Metamorphic Substrate of the Rift Basin in Eastern China—Taking the Exploration of the Buried Hill Inner Reservoir of Substrate Metamorphic Rock in the Liaohe Rift Basin as an Example

2021 ◽  
Vol 09 (06) ◽  
pp. 1019-1029
Author(s):  
兴明 廖
Keyword(s):  
Metamorphic Rock ◽  
Oil And Gas ◽  
Eastern China ◽  
Rift Basin ◽  
Buried Hill

The Cognition Decide the Exploration- The Exploration Study on Buried Hill Reservoir in the Liaohe Basin

2012 ◽  
Vol 616-618 ◽  
pp. 166-169
Author(s):  
Zong Zhan Xue ◽  
Deng Fa He ◽  
Xiao Heng Wang
Keyword(s):  
Source Rock ◽  
Metamorphic Rock ◽  
Oil And Gas ◽  
Technology Development ◽  
Oil Field ◽  
Oil Accumulation ◽  
Cave System ◽  
Liaohe Basin ◽  
Buried Hill ◽  
Liaohe Depression

In recent years the buried hill exploration was a main power for increasing reserve& production in the Liaohe oil field. By the research and analysis on the buried hill reservoir exploration in the Liaohe oil field in the paper, It point out that the previously mistake cognition was broken through in the buried hill reservoir exploration with the seismic, logging etc. technology development. The achievement list as: 1. The conclusion is drawn about the depth of the buried hill reservoir determined by the depth of the source rock which clarified the mistake about the buried hill reservoir formed only in the shallow formation. 2. The inner of the buried hill reservoir of the metamorphic rock is a fissure-cave system formed by the various and layered rocks which served as an oil accumulation place which broke through the cognition on no pore in the deep inner of the buried hill reservoir. 3.The reservoir-formed pattern is built on the study of the controlled factor in the buried hill reservoir which denied the barrier of the basalt layer for oil and gas translation over the buried hill reservoir .In this paper by the summary of the cognition breakthrough and achievement, it shows the next exploration direction in buried hill reservoir in the Liaohe depression.

scholarly journals Deep-water gravity flow deposits in a lacustrine rift basin and their oil and gas geological significance in eastern China

2021 ◽  
Vol 48 (2) ◽  
pp. 286-298
Author(s):  
Yingchang CAO ◽  
Jiehua JIN ◽  
Haining LIU ◽  
Tian YANG ◽  
Keyu LIU ◽  
...  
Keyword(s):  
Deep Water ◽  
Oil And Gas ◽  
Eastern China ◽  
Gravity Flow ◽  
Rift Basin ◽  
Geological Significance

Mesozoic–Cenozoic tectonic controls on the formation of large‐scale metamorphic rock buried‐hill reservoirs in Bozhong Sag, eastern China

2021 ◽  
Author(s):  
Xiaojian Liu ◽  
Mingcai Hou ◽  
Chengmin Niu ◽  
Qingbin Wang ◽  
Xintao Zhang ◽  
...  
Keyword(s):  
Large Scale ◽  
Metamorphic Rock ◽  
Eastern China ◽  
Buried Hill

Analysis of Fault Characteristics and Reservoir Forming Control in Middle Fault Depression Belt in Hailer-Tamtsag Basin

2012 ◽  
Vol 616-618 ◽  
pp. 174-184
Author(s):  
Yong He Sun ◽  
Lin Kang ◽  
Feng Xiang Yang ◽  
Xue Song Li
Keyword(s):  
Oil And Gas ◽  
Source Rocks ◽  
Fault System ◽  
Type I ◽  
Weathering Crust ◽  
Gas Migration ◽  
Block Boundary ◽  
System Type ◽  
Fracture Damage ◽  
Buried Hill

In order to reveal in middle fault depression belt of Hailer-Tamtsag Basin buried hill oil and gas migration and accumulation characteristics, we summarize controlling effect of fault on oil and gas migration and accumulation of buried hill, which by analysing genetic mechanism of buried hills based on fault systems formation and evolution. Research shows that three types of fault system in Hailer-Tamtsag Basin: early stretched fault system(Type I), early stretched middle tensile shearing fault system(Type I-II), early stretched middle tensile shearing reverse late fault system(Type I-II-III). Type I-II and I-II-III are stretching by NW tensional stress in Nantun group ,which afford tectonic framework for syngenesis buried hill and epigenetic buried hill. Type I make buried hills complicated .It is also favorable to ancient geomorphological buried hill in the fault less affected zones. Although they formed cracks dense zone easier, Type I-II and I-II-III fault system damage the reservoir which is not conducive to " hydrocarbon-supplying window " formation; Type I fault system have less promotion on the development of the buried hill reservoir, while it is conducive to hydrocarbon accumulation as the block boundary in buried hill hydrocarbon. Fault formed source rocks two kinds for hydrocarbon mode: unidirectional and bidirectional, which formed two reservoir-forming pattern: Unidirectional transportation hydrocarbon of weathering crust or hydrocarbon of fracture damage zones and bidirectional transportation hydrocarbon of weathering crust or hydrocarbon of fracture damage zones.

Influence of normal fault growth and linkage on the evolution of a rift basin: A case from the Gaoyou depression of the Subei Basin, eastern China

AAPG Bulletin ◽  
2017 ◽  
Vol 101 (02) ◽  
pp. 265-288 ◽  
Author(s):  
Yin Liu ◽  
Qinghua Chen ◽  
Xi Wang ◽  
Kai Hu ◽  
Shaolei Cao ◽  
...  
Keyword(s):  
Eastern China ◽  
Normal Fault ◽  
Rift Basin ◽  
Fault Growth

scholarly journals Reservoir Characteristics of Buried-hill Draping Zone in L Oilfield, Offshore China

2021 ◽  
Vol 10 (2) ◽  
pp. 33
Author(s):  
Yujuan Liu ◽  
Qianping Zhang ◽  
Bin Zheng ◽  
Jing Zhang ◽  
Zhaozhao Qu
Keyword(s):  
Seismic Data ◽  
Eastern China ◽  
Seismic Facies ◽  
Bohai Bay ◽  
Bohai Bay Basin ◽  
Sedimentary Characteristics ◽  
Reservoir Characteristics ◽  
Production Practices ◽  
Buried Hill ◽  
Different Parts

The reservoir in different parts of buried-hill draping zone is often quite different, so it is of great significance to clarify the reservoir characteristics for exploration and development. Based on core, well logging, seismic data and production data, reservoir characteristics of oil layer Ⅱ in the lower second member of Dongying Formation of L oilfield, Bohai Bay Basin, offshore eastern China are systematically studied. Analyses of seismic facies, well-seismic combination, paleogeomorphology, and sedimentary characteristics are carried out. Sediment source supply, lake level and buried hill basement geomorphology all contribute to reservoir quality. The research suggests that the different parts of buried-hill draping zone can be divided into four types. Reservoir thickness and physical properties vary. The area where the provenance direction is consistent with the ancient valley direction is a favorable location for the development of high-quality reservoirs. Under the guidance of the results, oilfield production practices in L oilfield offshore China are successful. Knowledge gained from study of L oilfield has application to the development of other similar fields.

High-resolution seismic processing technique with broadband,wide-azimuth, and high-density seismic data - A case study of thin-sand reservoir in eastern China

2021 ◽  
pp. 1-45
Author(s):  
Qin Su ◽  
Huahui Zeng ◽  
Yancan Tian ◽  
HaiLiang Li ◽  
Lei Lyu ◽  
...  
Keyword(s):  
Seismic Data ◽  
Oil And Gas ◽  
Single Point ◽  
Eastern China ◽  
High Density ◽  
Songliao Basin ◽  
Seismic Processing ◽  
Oil And Gas Exploration ◽  
Sand Body

Seismic processing and interpretation techniques provide important tools for the oil and gas exploration of the Songliao Basin in eastern China, which is dominated by terrestrial facies. In the Songliao Basin, a large number of thin-sand reservoirs are widely distributed, which are the primary targets of potential oil and gas exploration and exploitation. An important job of the exploration in the Songliao Basin is to accurately describe the distribution of these thin-sand belts and the sand-body shapes. However, the thickness of these thin-sand reservoirs are generally below the resolution of the conventional seismic processing. Most of the reservoirs are thin-interbeds of sand and mudstones with strong vertical and lateral variations. This makes it difficult to accurately predict the vertical and horizontal distribution of the thin-sand bodies using the conventional seismic processing and interpretation methods. Additionally, these lithologic traps are difficult to identify due to the complex controlling factor and distribution characteristics, and strong concealment. These challenges motivate us to improve the seismic data quality to help delineate the thin-sand reservoirs. In this paper, we use the broadband, wide-azimuth, and high-density integrated seismic exploration technique to help delineate the thin-reservoirs. We first use field single-point excitation and single-point receiver acquisition to obtain seismic data with wide frequency-bands, wide-azimuth angles, and high folds, which contain rich geological information. Next, we perform the near-surface Q-compensation, viscoelastic prestack time migration, seismic attributes, and seismic waveform indication inversion on the new acquired seismic data. The 3D case study indicates the benefits of improving the imaging of thin-sand body and the accuracy of inversion and reservoir characterization using the method in this paper.

Reservoir Characteristics of Buried Hill and Oil and Gas Distribution of Hailaer Basin - Case Study of Budate Formation of Sudeerte Oilfield

2014 ◽  
Vol 926-930 ◽  
pp. 4425-4428
Author(s):  
Hong Jun Fu
Keyword(s):  
Oil And Gas ◽  
Physical Property ◽  
Tectonic Stress ◽  
Dual Porosity ◽  
Weathering Crust ◽  
Gas Distribution ◽  
Mud Logging ◽  
Buried Hill ◽  
Structural High

Buried hill reservoirs are typically found in Sudeerte oilfield in Hailaer basin. In this paper, the lithology, physical property and electric property of buried hill reservoirs are studied incorporating core data, mud logging, wireline logging and seismic attributes data. The major reservoir types of Budate buried hill are confirmed to include porosity, fracture, cavern and dissolved pore, which belong to dual porosity reservoirs. Vertically, the reservoirs get worse with the increase of buried depth and are controlled horizontally by weathering crust position and tectonic stress, and locations nearby fractured belt and structural high positions are preferable places for the formulation of good reservoirs. Oil and gas within the reservoir mainly accumulated inside fractures and pores and reservoirs with plenty existence of fractures and pores have good oil and gas shows and vice versa.

Regional Seal as Key Controlled Elements of Petroleum Accumulation in the Rift Basin

2012 ◽  
Vol 524-527 ◽  
pp. 190-193
Author(s):  
Hai Yan Hu ◽  
Zhe Zhao ◽  
Song Lu ◽  
Hang Zhou Xiao
Keyword(s):  
Source Rock ◽  
Oil And Gas ◽  
Thickness Distribution ◽  
Normal Faults ◽  
Hydrocarbon Generation ◽  
Geological Condition ◽  
Rift Basin ◽  
Rift Basins ◽  
Northwest Germany ◽  
Petroleum Accumulation

Rift basin is an important petroleum basin type, in which about one third of oil and gas was discovered. To research on the main controlled elements of oil and gas accumulation, five typical rift basins in Europe are focused on the geological condition such as source rock, reservoir, seal, petroleum system, and accumulation with logging, hole, measured and analytical methods, and so on. The results showed the main regional seal controlled the petroleum distribution in the rift basin. Seals are defined by main regional seal, minor regional seas and local region according to thickness, distribution, lithostratigraphy. Viking Graben of North Sea has main regional seal about 3000m thick during late Jurassic and Cretaceous, about 81 percent of petroleum is in the Jurassic reservoir; Anglo-Dutch basin has main region thick seal during Triassic through Jurassic, and Permian reservoir accounted for 73 percent of basin reserves; Voring Basin has the main regional seal during Cretaceous through early Tertiary, the Jurassic reservoir has 85 percent of whole basin reserves; Northeast and Northwest Germany Basins have the evaporites as main regional seals during late Permian, and Permian reservoir accounted for more than 80 percent of basin reservoir, respectively. Rift Basin can develop reservoir like turbidite, source rock, seal in the basin dynamic opinion. Some main regional seals may develop overpressre because of quick subside and hydrocarbon generation at some conditions, it can strengthen seal capability. Oil and gas can migration to the main regional seal by normal faults caused by rifting, which can stop further migration so that they were accumulated under the main regional seal.

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