2006 Vol. 12, No. 4

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TEMPERATURE DIFFERENCE BETWEEN THE QINGHAI-TIBET PLATEAU AND ITS CONTIGUOUS AREAS
JIANG Fu-chu, WANG Shu-bin, FU Jian-li, WANG Yan, YIN Wei-de
2006, 12(4): 399-405.
Abstract (229) PDF (384KB)(7)
Abstract:
This paper briefly discusses the difference of temperatures between the western and eastern parts south of the Kunlun-Qinling mountains of China.Comparison between the measured temperatures at weather stations and the temperatures obtained by conversion of the measured temperatures at sea level show...
REDEFINITION OF THE EARLY PLEISTOCENE QANGZÊ FORMATION AND SEQUENCE STRATIGRAPHIC DIVISION IN THE ZANDA BASIN, NGARI, TIBET
ZHU Da-gang, MENG Xian-gang, SHAO Zhao-gang, YANG Chao-bin, HAN Jian-en, YU Jia, MENG Qing-wei, LÜ Rong-ping
2006, 12(4): 406-415.
Abstract (184) PDF (508KB)(9)
Abstract:
Based on the contact relationships,sedimentary cycles,sedimentary systems and lithofacies and lithologic characteristics of the stratigraphic section,the fluvio-lacustrine sediments of the early Pleistocene Qangzê Formation in the Zanda basin are divided into 2 sedimentary facies and 3 lithologic me...
MAGNETOSTRATIGRAPHIC STUDY OF LAKE SEDIMENTS IN JIAOCHANG, MAOXIAN COUNTY, SICHUAN
WANG Shu-bing, LI Yi, XIA Xiong-gang, FAN Zhen-fei, FU Jian-li, WANG Yan, JIANG Fu-chu
2006, 12(4): 416-422.
Abstract (204) PDF (325KB)(6)
Abstract:
The Jiaochang section in Maoxian County,Sichuan Province,is 101.1 m thick,in which lacustrine sediments are 98.0 m thick,consisting of light yellow-gray silt,clayey silt and silty clay.Paleomagnetic measurements indicate that all the samples show normal polarity except two samples that have negative...
MICROSTRUCTURES AND AGES OF ACTIVITY OF THE REVERSE FAULTS ALONG THE SOUTHERN MARGIN OF THE JUNGGAR BASIN
HAN Shu-qin, BING Ying, HU Ling
2006, 12(4): 423-428.
Abstract (329) PDF (730KB)(12)
Abstract:
The microstructures of fault gouge and tectonite in the Huo'erguosi-Manas-Tugulu reverse fault zones along the southern margin of the Junggar basin are studied and twelve samples of gypsum,fault gouge and quartz veins were collected and dated by using the electronic spin resonance(ESR) method.The re...
NUMERICAL SIMULATION AND DYNAMIC ANALYSIS OF THE STRESS FIELD OF THE INDO-AUSTRALIAN PLATE
FENG Xiang-dong, LIU Wei-hu, WEI Dong-ping
2006, 12(4): 429-440.
Abstract (313) PDF (558KB)(11)
Abstract:
The types and nature of the Indo-Australian plate are very complex.A 3D lithosphere model of the Indo-Australian plate is constructed and numerical simulation of the tectonic stress field of the Indo-Australian plate is performed by using the pseudo-3D finite element method and adopting the WSM2000 ...
CONTROLS OF NON-SYNDEPOSITIONAL FAULTS ON THE CHANGE IN THICKNESS OF STRATA ADJACENT TO FAULTS
YI Shun-hua, ZHU Zhang-xian, JIN Jun, DAN Wei
2006, 12(4): 441-444,440.
Abstract (186) PDF (318KB)(9)
Abstract:
This paper discusses the changes in thickness of strata adjacent to faults induced by non-syndepositional faulting according to outcrop-scale structural phenomena,geophysical maps,model experiments and domestic and foreign data. These changes are manifested by the following features:under the action...
A QUANTITATIVE MODEL OF HEAT PRODUCTION BY FAULTING AND ITS EFFECT ON THERMAL EVOLUTION OF HYDROCARBON SOURCE ROCKS
TONG Heng-mao, ZHANG Sheng-gen, HU Yuan-qing
2006, 12(4): 445-453.
Abstract (242) PDF (455KB)(9)
Abstract:
A quantitative heat-producing model of faulting was constructed proceeding from the basin stress state analysis and from the viewpoint of frictional heat production.On the basis of the model,the quantitative relationships between the heat quantity produced by fault plane friction and the fault natur...
SEDIMENTARY DIFFERENCE AND LOW-PERMEABILITY RESPONSE OF THE UPPER TRIASSIC YANCHANG FORMATION IN THE LONGDONG AREA, GANSU-EXAMPLES FROM THE CHANG 6 RESERVOIR IN HESHUI AND CHANG 8 RESERVOIR IN BAIMA
SHI Cheng-en, LUO Xiao-rong, WAN Xiao-long, LI Liang
2006, 12(4): 454-461.
Abstract (131) PDF (632KB)(5)
Abstract:
The Chang 8 reservoir at Baima in the Longdong area consists of delta-front underwater distributary channel deposits formed in the process of lake basin expansion,while the Heshui Chang 6 reservoir was mainly delta-front turbidity sand.They are low-and very low-permeability reservoirs respectively,b...
CHARACTERISTICS OF INTER-SALT NON-SANDSTONE RESERVOIRS AND GENESIS OF FRACTURES IN THE JIANGHAN OIL FIELD
XIANG Shu-an, LING Qing-zhen, TU Shui-jiang, WANG Feng
2006, 12(4): 462-468,453.
Abstract (273) PDF (515KB)(5)
Abstract:
Salt rhythms are well developed in the Qianjiang subbasin,Jianghan basin,and some rhythms contain oil accumulations of commercial value.The rocks consist predominantly of mudstone,evaporite,gypseous mudstone and glauberite dolostone.The reservoir spaces mainly include pores,cavities and fractures,wi...
GEOCHEMICAL CHARACTERISTICS OF HYDROCARBON SOURCE ROCKS IN THE NO. 2 STRUCTURAL BELT OF THE NANPU SUBBASIN, EASTERN HEBEI OIL FIELD, AND SOURCE ROCK CORRELATION
JIA Qi-shan, LI Sheng-li, MA Qian, XU Wen-shi
2006, 12(4): 469-475.
Abstract (199) PDF (350KB)(4)
Abstract:
The main oil-bearing horizons of the No.2 structural belt of the Nanpu subbasin are sandstone of the First Member of the Paleogene Dongying Formation and Ordovician limestone.Analysis of several items of organic geochemical markers of source rocks and crude oil samples from well LPN1 indicates that:...
QUANTITATIVE PREDICTION OF DISTRIBUTION OF TECTONIC FRACTURES IN THE YANCHANG FORMATION IN THE ZHENYUAN-JINGCHUAN AREA, ORDOS BASIN
ZHANG Lin-yan, FAN Kun, LIU Jin-dong, ZHOU Xin-gui, WANG Chun-yu, YUAN Yang-sen
2006, 12(4): 476-484.
Abstract (211) PDF (538KB)(7)
Abstract:
Detailed observations and statistics of tectonic fractures in outcrops,drilling cores and thin sections have been made and the basic characteristics, mechanics and origin of tectonic fractures in reservoirs of the Triassic Yanchang Formation in the Zhenyuan-Jingchuan area have been analyzed.Accordin...
FACTORS INFLUENCING THE EFFECTS OF HYDROFRACTURING IN A LOW-PERMEABILITY OILFIELD AND POTENTIAL EVALUATION USING ARTIFICIAL NEURAL NETWORK
SUN Dong-sheng, WANG Hong-cai, HOU Mo, ZHAO Wei-hua, SONG Qing-xin, LIU Zhen-hua, NIU Shu-fang
2006, 12(4): 485-491.
Abstract (226) PDF (313KB)(9)
Abstract:
Hydrofracturing is one of the main technical means for improving the recovery efficiency in low-permeability oil/gas fields.However,there are many factors that influence the hydrofracturing effects,including geological characteristics,physical properties of reservoirs and energy of strata.In order t...

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