1993 Vol. 15, No. 4

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A NEW UNDERSTANDING OF THE CHARACTERISTICS OF PETROLEUM GEOLOGY IN THE KESHI DEPRESSION, SOUTHWEST TARIM
Chen Ronglin, Hu Min, Zhu Hongfa, Chen Yue, Xu Xiang
1993, 15(4): 319-324. doi: 10.11781/sysydz199304319
Abstract:
With a new understanding of petroleum geologic conditions in the Keshi Depression, southwest Tarim, the authors believe that the middle Jurassic Yangye Formation is the major source rocks in the Meso-Cenozoic systems of the area, the Kezilesu Gr. aeolian sandstones of the Lower Cretaceous could be e...
YENSHANIAN OIL/GAS GENERATION AND EVOLUTION IN WEST SICHUAN AND ITS OIL/GAS EXPLORATION PROSPECTS
Tao Hai
1993, 15(4): 325-334. doi: 10.11781/sysydz199304325
Abstract:
Since the Yenshanian movement is a peak stage for oil/gas generation of the Triassic source rocks in west Sichuan, the tectonic evolution in this stage would be significant for oil/gas accumulation in the area. On the basis of tectonic settings and sedimentary characters, the tectonic evolution in w...
ON THE DYNAMIC RESEARCH OF THE DEEP-SEATED STRUCTURE FOR THE BASIN-FOLD-MOUNTAIN SYSTEM IN YANGTZE AREA
Fan Xiaolin, Lu Guoxin, Jiang Hongkan
1993, 15(4): 335-342. doi: 10.11781/sysydz199304335
Abstract:
According to the data of seismic sounding, magnetotelluric sounding and the geother-mal flow measurement, a variety of planimetric maps and diagrams have been charted. Compared with the results of the regional geology and lithology research, the characteristic of the physical properties of the litho...
ON THE DISTRIBUTION OF FLUID PROPERTIES AND GEOCHEMICAL MODEL IN RESERVOIR DESCRIPTION
Xiong Qihua, Fang Chaoliang, Zhang Zhihuan, Ji Fahua
1993, 15(4): 343-349. doi: 10.11781/sysydz199304343
Abstract:
With the development of the theory on oil reservoir description, the studies on the distribution of fluid properties and geochemical models have become an important part of reservoir description. In this paper, the case studies were taken from the heavy viscous oil pools in the 1,2,3 sections of the...
THE DISTRIBUTION OF SEDIMENTARY FACIES IN THE CAMBRIAN SYSTEM OF THE YANGTZE AREA
Zhang Xinguo
1993, 15(4): 350-360. doi: 10.11781/sysydz199304350
Abstract:
Based on the studies of sedimentology and petrology from 13 field profiles and the comprehensive analysis on the sites of 285 profiles, three regional profiles were established. Furthermore, the sedimentary facies over the whole Yangtze region was systematically studied in detail, which also resulte...
THE IMPLICATIONS OF PETROLEUM GEOLOGY OF LACUSTRINE CARBONATE ROCKS
Zhou Shuxin, Wang Jianguo
1993, 15(4): 361-369. doi: 10.11781/sysydz199304361
Abstract:
The petroleum potential, reservoir conditions, the types of oil/gas pools and exploratory method of hidden oil/gas traps developed in lacustrine carbonate rocks were discussed. It is concluded that the carbonate rocks in semi-lacustrine and deep lacustrine facies would be good source rocks;and limes...
ON THE PROPERTY OF THE BASEMENT FORMATION IN THE PALEOZOIC BASINS OF THE YANGTZE AREA
Shan Xianglin
1993, 15(4): 370-384. doi: 10.11781/sysydz199304370
Abstract:
The basement duplex structures are widely developed in the Paleozoic basins of the Yangtze Area. The intermediate metamorphic and hypometamorphic basements in the lower structural level mainly consist of the metamorphic rocks attributed to the Archaean-Lower Proterozoic granulite-amphibolite facies ...
GEOCHEMICAL CHARACTERISTICS OF LOW-MATURITY CRUDE OIL IN THE XINJIANG JIMSAR DEPRESSION AND ITS PETROLIFEROUS POTENTIAL
Wang Yutao
1993, 15(4): 385-393. doi: 10.11781/sysydz199304385
Abstract:
In this paper, the physical properties and geochemical characteristics of crude oil from No.6 drilling well of the Jimsar Depression were studied. Thereafter, the correlation with adjacent regions were carried out in order to evaluate petroliferous potential in the Depression.
ON THE PARAMETER FOR ASSESSING MATURITIES OF ORGANIC MATTER IN SOURCE ROCKS DURING ARTIFICIAL MATURATION EXPERIMENTS
Li Zhi
1993, 15(4): 394-403. doi: 10.11781/sysydz199304394
Abstract:
Vitrinite-rich brown coal was sampled for our artificial maturation experiments to set up a corresponding relationship between telocolinite vitrinite reflectance and heating temperature (R°-TPY). By using such a relation, we can assess the maturities of all kinds of source rocks during the artificia...
POROSITY AND PERMEABILITY UNDER CONFINING PRESSURE CONDITION AND THEIR IMPORTANCE FOR GAS-RESERVOIR EVALUATION
Sun Tuo, Lin Wanxiang
1993, 15(4): 404-413. doi: 10.11781/sysydz199304404
Abstract:
By experiments the authors studied the pressure effects of rock formation on the development of porosity and permeablility and suggested the evaluating and grading mathods of relative physical property parameters suitable to unconventional reservoirs and gas-reservoirs. Furthermore, the sensitive ex...
A NEW METHOD TO CALCULATE THE ANCIENT THICKNESS OF SEDIMENTARY SEQUENCES
Mou Zhonghai
1993, 15(4): 414-422. doi: 10.11781/sysydz199304414
Abstract:
As the study and calculation on the ancient thickness of sedimentary sequences used to be based on the data of drilling wells and loggings, the application of the calculation is limited by the number of drilling wells. In this paper, the density logging data is applied combining with the thickness e...
THE TERTIARY SPOROPOLLEN ASSEMBLAGE IN THE JIUQUAN BASIN AND THE PALAEOENVIRONMENT
Ma Jinqian
1993, 15(4): 423-435. doi: 10.11781/sysydz199304423
Abstract:
As sporopollen is the generative cell of maternal plants, a paleo-vegetation and paleo-climate may be partially and approximately revealed by using the sporopollen spectrum. However, the characteristics of sporopollen assemblages from various Tertialry sequences in the Jiuquan Basin are approached w...