石油实验地质

Yang Zhaoyu, Sun Zhaocai, Chen Husheng, Guo Zhengwu, Yan Xiugan, LÜ Hua, Zhu Xia, Guan Shichong, Yang Pu, Han Xinmin

1984, 6(3): 161-179. doi: 10.11781/sysydz198403161

Abstract(541) PDF-CN(298)

Abstract:
In order to meet the needs of petroleum exploration of the "second round", this article makes a discussion on the prospect of petroleum resource in China on basis of analysing the conditions of petroleum geology. This paper presents petroleum prospects of the three domains, i.e., Meso-Cenozoic basins onland, Cenozoic basins along the coast and on the continental shelf, and the extensive Paleozoic sedimentary basins. It also suggests the direction for further search of oil and gas. It comes to a conclusion that petroleum geology of China is typical of "a basin community with multiple source, multiple combination, multiple trap-type and multiple cycle". And there is an exciting prospect of hydrocarbon resources.

THE STRUCTURE AND DYNAMICS OF THE CONTINENTAL LITHOSPHERE IN NORTH AND NORTHEAST CHINA PETROLIFEROUS REGIONS

Ma Xingyuan, Liu Guodong, Su Jian

1984, 6(3): 180-191. doi: 10.11781/sysydz198403180

Abstract(592) PDF-CN(395)

Abstract:
The continental lithosphere of north and northeast China exhibits many Meso-Cenozoic graben systems and basins. Among them the Songliao Basin and North China Plain are the largest. These are subtle indicators of the structure and dynamics of the lithosphere. The regional geology coupled with geophysics indicates that the location and extent of these basins coincide with areas in which the lithosphere is stretched, thinnered, highly fractured and in which the geothermal gradient and heat flow are increased. However the attenuation of the lithosphere was not solely due to shallow crust normal faulting. The formation of these large basin structures are connected with deep seated processes in the mantle. It is suggested that the fundamental controlling factor was the upward advection of the asthenosphere, which may be related to the large subcontinental convection induced by the subduction of Kula-Pacific Plates under the Japan islands since late Mesozoic.

A PRELIMINARY APPROACH TO THE INDO-CHINA MOVEMENT IN NORTH CHINA

Li Weiqian, Wu Yulan

1984, 6(3): 192-202. doi: 10.11781/sysydz198403192

Abstract(522) PDF-CN(265)

Abstract:
The Indo-China Movement in the North China area is characterized by gentle activities of upheaval and depression. Activities of faultdown and magmatism occurred only within the marginal area of the platform, somewhat similar to the epeirogenesis. This area experienced differentiational uplift and subsidence during the early episode of the Indo-China Movement, which can be referred as the stage of depression development within the continent. It appeared as regional uplift during the late episode. There developed gently folded and/or block-folded microbasins. It is evident that differentiational uplift and subsidence activities trending Ew did occur in the North China area during the Hecynian Movement. It took the Luliang Shan Mountain as the border, higher in the west and lower-in the east. And in the east part of the platform from Carboniferous to Permian the centre of subsidence was shifted clockwise from north to south. The platform was then changed into higher in the east and lower in the west with the centre of subsidence shifted counter-clockwise from northeast to southwest during the late episode of the Indo-China Movement. It reflects the previous compressional stress southnorthward was changed into northwestward in the regional stress field. The Yuxi (west Henan) depression of the late Triassic experienced a stage of the development of stable lakebasin, providing material base for sourceded. Paleo channel sand bars and related hydrocarbon pools of "oil generated in Cenozoic and accumulated in Mesozoic" might be formed on the erosional surface formed in the late episode of the Indo-China Movement.There is also a prospect for searching of gas traps in the coal-series associated with "oil generated in Cenozoic and accumulated in Mesozoic".

CHARACTERISTICS AND FORMATIONAL MECHANISM OF THE SEDIMENT GRAVITY FLOW OF THE TANGWANG LING FORMATION OF SHAANXI

Chen Wanchuan, Hao Shumin, Huang Jiabin

1984, 6(3): 203-212. doi: 10.11781/sysydz198403203

Abstract(591) PDF-CN(345)

Abstract:
The sediment gravity flow of the Tangwang Ling Formation can be divided into four types according to both their lithology and sedimentary characteristics, i.e., debris, clastic, grain and turbidity. This paper makes a statement on their characteristics, formational mechanism and development. The author suggests that the formation, development and distribution of the gravity flow of the Tangwang Ling Formation were under the effect of the second episode of the Caledonian and the control of differentiational uplift and subsidence faulting. Paleo-geographically it is referred as a residual ocean basin of foremountain faultdown type trending NEE. Sediments settled down by the gravity flow in this area are of the type of multiple-source faultdown-basin; the sediments were principally resulted from gravity flow in shallow water, rather than the so-called "glacial sediments".

AN APPROACH TO THE MULTIPLE SOURCE AND MULTIPLE MODE OF GAS FORMING IN CHINA

Xiong Shousheng, Zhang Wenda, Lu Peide, Wu Deyuan

1984, 6(3): 213-228. doi: 10.11781/sysydz198403213

Abstract(564) PDF-CN(305)

Abstract:
This paper states that gas can be formed under multiple geochemical reaction. On this basis, it focus on discussing the modes of forming gas and the gas prospect in China. It is suggested that natural gas is of multiple origin and can be formed from both organic and inorganic matrix. Gas can also be formed endogenically or epigenetically. And gas can be formed both at low or high temperatures, and even at the stage of metamorphism. Gas may be divided into three types according to their origin, biogenic gas, thermal gas, deep-source gas of ten kinds of mode of gas forming. This article makes a preliminary approach to the characteristics of various modes of gas forming and the geological conditions under which gas is formed.

CHARACTERISTICS OF PETROLEUM GEOLOGY SETTING AND HYDROCARBON PROSPECTS OF NORTHWESTERN CHINA

Kang Yuzhu

1984, 6(3): 229-240. doi: 10.11781/sysydz198403229

Abstract(528) PDF-CN(271)

Abstract:
The northwestern China (the area west to the Helan Shan-Liupan Shan and north to the Kunlun Shan-Qjnling) occupies an area of 2 million km². It takes the Xiyu System trending NWW and the latitudinal system trending EW as the back bone of the tectonic framework. The Hecynian Movement caused the tectonic system to take shape and develop forward. The Meso-Cenozoic basins are superimposed on different Paleozoic sediments, having oil-generating combinations with multiple series and multiple type of hydro-carbon deposits. Local structures were developed well within the basins. Hundreds of oil and gas shows and 42 oil or gas fields (or deposits) have been found in this area so far. Oil and gas prospect seems to be best in the Junggar, Tarim and Qaidam Basins, being thought as a promising area for the search of giant oil and gas fields. There is also a good oil and gas prospect in the Turpan-Hami, Santang Hu and Gansu Corridor Basins.

1984, 6(3): 241-252. doi: 10.11781/sysydz198403241

Abstract(566) PDF-CN(211)

Abstract:

1984, 6(3): 262-264. doi: 10.11781/sysydz198403262

Abstract(411) PDF-CN(194)

Abstract:

1984, 6(3): 265-270. doi: 10.11781/sysydz198403265

Abstract(522) PDF-CN(383)

Abstract:

1984 Vol. 6, No. 3

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