最新刊期
卷 7 ， 期 3 ， 1986
- 摘要：It is Pointed out in this paper that the continental shelf of China is the na-tural extension of China's continent in seas,including five geological tectonic units which are,from north to south,Bohai Bay depression zone,Jiaodong-Liaodong uplift zone,North Jiangsu-South Yellow Sea depression zone,Zhe-jiang-Fujian-Guangdong uplift zone and the East China Sea-Northern South ChinaSea Shelf depression zone,arranging in NE and NNE directions.The distributionof Pre-Tertiary basement rocks of Chinese Continental Shelf may be dividedinto twelve areas as follows:1.Bohai area of Jurassic-Cretaceous distribution;2.The North Yellow Sea area of Pre-Cambrian metamorphic rocks;3.The South Yellow Sea area of Permian-Triassic carbonate rocks;4.The East China Sea area of Mesozoic rocks distribution;5.The Northern South China Sea area of Pre-Cambrian crystallized meta-morphic rocks;6.Guangdong-Guangxi coastal area of the Lower Paleozoic metamorphicrocks;7.Guangdong-Guangxi coastal area of the remnant Upper Paleozoic rocks;8.East Guangdong coastal area of Upper Triassic-Lower Jurassic marinefacies;9.Zhu-1 depression area of Middle and Upper Jurassic-Cretaceous vol-canic rocks;10.Penghu-Dongsha Islands area of Cretaceous marine facies;11.The Northern Shelf area of the South China Sea of Upper Cretaceous distribution;12.Deep-marine plain area of ocean basalts distribution.Pre-Tertiary basement rocks which underwent a long-term geological evolution with widely spread marine facies and continental facies deposits and varioustypes of magmatic rocks.Numerous tectonic zones and different kinds of re-servoirs may form basement rock oil and gas pools of younger source rock-elder reservoiring type and the basement rock themselve generating-basement rock reservoiring type.Therefore,oil and gas potential there may be prosperous.622|403|0更新时间：2023-05-30
- 摘要：Turbidity current deposits developed widely in Guizhou and Guangxi du-ring the Middle Triassic.Terrigenous materials came from island are in thesoutheast part of Guangxi,this is based on that:1.The turbidites in the southeast occured anterior to that in the northwest;2.The proximal facies in the southeast changes into distal facies in the northwest;3.Volcanic rocks decreasein thickness and even pinch out from southeast to northwest;4.The flow direc-tion of the flute castes point to NNE but not point to EW in the proximal facies;5.The scale of the flute castes changes gradually small from southeast to northwest.The quartz contentes are from 43 to 59%,SiO2 ranges from 70.46 to 72.04%,ratio of K2O to Na2O is less than 1 in the turbidite rocks,which isin accord with graywack of middle quartz content classified by Crook(1974),but it is in the range of high value.This shows that their formation condition maybe distent with oceanic crust but close to continental crust.In addition,the tur-bidity current deposits,ranging from 3000 to 5000 m in thickness throughout the study area,distributed extensively about 70000km2 in Guizhou,Guangxi and Yunnan,which are bounded by a marginal reef barrier in the north and avolcanic island arc in the south.It is shown that such sediments were formed in back-arc basin but not fore-arc trench.It is because the turbidites belong to back-arc basin that the sediments con-tain intercalated beds of volcanic rocks.More over,the closer to the islandarc,the greater the thickness.Since the continental crust of the back-arc basin changed thinner under the micro-spreading processes,mantle materials thus spil-led over to develop into basic,untrabasic intrusive bodies and slump conglo-merats that are resulted by faults.589|375|0更新时间：2023-05-30
- 摘要：The study of diagenesis,reservoir characters and the relationship between them indicates that there is a certain time conjunction relation between porosity evolu-tion and hydrocarbon reservoiring just as that between geological structure and hydrocarbon accumulation,and moreover,the former is more complicated.Therefore,the present porosity of rock samples in outcrops and holes which do notcontain hydrocarbon can not really reflect the reservoir characters of the rocks.Only the“porosity of accumulation stage”(i.e.the porosity of rocks in themain hydrocarbon migration and accumulation stage)can be one of the valuable parameters for the evaluation of hydrocarbon reservoirs.The study of diagenesis must be carried out in detail for determining the porosity of accumulation stage,so that one may clarify the history of porosity evolution.In the meantime,wemust analyze the history of hydrocarbon generation,migration accumulation and evolution,especially the relationship between the history of porosity evolutionand that of hydrocarbon evolution.535|787|0更新时间：2023-05-30
- 摘要：Central Yangzi Basin belongs to the central part of Yangzi Paraplatform.Its basement was formed by Zhongtiao-Wuling Orogenies.The basin experienced multy-stage and multy type tectogenesis dominated by compressive tectonic en-vironment,thus the open-sea basin in the Sinian-Middle Triassic,huge coal-bearing lacustrine basin of the intercont inent in the Late Triassic to Jurassic andmultycycle basin of the brine lake in the Cretaceous to Tertiary were formed before and after.The main tectonic units of the present time include Jianghan Basin in the central part of the platform,overthrust tectonic belts in the north-eastern and southeastern margin and gravity-glide faults in the west part ofthe region.The basin has congenitally favourable conditions for hydrocarbon generation due to its great thickness of sedimental covers and multyple source-reservoir rock as semblages.The above mentioned three tectonic units are still prospectivefor oil and gas exploration though marine sediments there were seriously damaged by Yanshan Orogeny.The authors suggest that we have to take the compre hensiveresearch with the purpose of breaking through the Paleozoic-Mesozoic oil and gad on the basis of regional geophysical prospecting and parameter-well drilling.575|402|0更新时间：2023-05-30
- 摘要：Since the original organic matters are rich in constituents of terrestrial higher plants,some characteristic biomarkers,such as high-carbon-numbern-alkanes,gammacerane,oleanane,Ni-porphyrin and perylene etc.,can be found in terrestrial source rocks and terrestrial crude oils.611|563|0更新时间：2023-05-30
- 摘要：The key of reef-and rock-building role of organisms is to explain their paleoecologic characters and reef-building functions.Different reef-building organ-isms in shapes,such as massive,lamellar or tubular,branching,encrusting and indefinite shapes of vagrant or floating organisms,can construct five kinds of autochonous limestones in distinct ways:framestone,coverstone,bafflestone,bindstone and biocement stone.The same shape of reef-building organisms may have similar reef-building functions and forming mechanisms even in various geo-logical times.That is,framestones,bafflestones and some coverstones may form primary framework of reef;bindstones,biocementstones and some coverstone sgenerally construct the secondary framework of reef.677|545|0更新时间：2023-05-30
- 摘要：自从塔北沙雅隆起雅克拉构造上的沙参2井喜获优质高产工业油气流之后,地矿部决定尽快扩大战果,组织了各有关地区局的三十多个石油勘探队,组成一支六千多人的勘探大军,对该隆起三万多平方公里的面积进行大规模的多工种联合勘探,找到了一批有利于贮存油气的圈闭构造,并在其不同构造部位部署了一批探井,经过一年多的精心施工,已有沙7和沙4两口井在中—浅层不同程度地见到了油气显示。493|470|0更新时间：2023-05-30
- 摘要：The Carboniferous and Permian Systems in central and south Hebei Pro-vince,remained primarily in some fault-depressed basins and paleosynclines,distri-but within an area of more than 3000km2 with buried depth of 1500-4600m anda total thickness of more than 1000m,In the Permian System,the Shiqianfeng Formation,the Upper and Lower Shihezi Formations are mainly terrestrial clas-tic sediments formed in oxidizing environment,the Shanxi Formation is coal-bearing strata;the Benxi and Taiyuan Formations of the Middle and Upper carbo-niferous are transitional facies of terrestrial and marine sediments in which theTaiyuan Formation consists of coal measure.The Shanxi Formation contains 4-12 coal beds with a total thickness of 8.5-27m;the Taiyuan Formation contains 2-11 coal beds,with a total thick-ness of 2.5-33.5 m.Much carbonaceous and dark mudstones can be found incoal measures.The content of chloroform bitumen“A”is more than 0.2% inthe coal beds,the content of residual organic carbon is generally 0.5-1.0% andchloroform bitumen“A”is 0.048-0.115% in the dark mudstones.Vitrinite reflec-tance of them is greater than 0.5%.These indices show that they are favour-able source rocks.To analyze the hydrocarbon generation of the basin in accordance with tec-togenesis and the conditions of thermoevolution,the Himalayan phase is consi-dered to be an important period,and then the Yanshan phase.The Carboniterous and Permian Systems here have composed a great source-reservoir-cap rock assemblage,which can receive oil and gas from the overlying Eogene too.Thus the assemblage has double oil sources.The trap type on thewhole is considred to be fault-block type.The authors suggest that Wen'an Slop is the most favourable area in oiland gas prospects,and then Shenxian and Langfang ranges;as for the south ofHebei,it is better to seek coal-formed gas.587|458|0更新时间：2023-05-30
- 摘要：A preliminary approach is made on the genetic types of the gases in North China based on the carbon isotope data and geological data.It is suggested that natural gas with δ13C-value less than -55‰ is generally biogenic gas or gasgenerated from coal seam;the one with δ13C-value ranging from -35‰ to 45‰is generally derived from humic-saproplic kerogens of the Tertiary;while theone whose δ13C-value is greater than -40‰ is mainly generated from coal mea-sures(including coal seams and carbonaceous shales)of the Permo-Carboni-ferous.600|343|0更新时间：2023-05-30
- 摘要：Yajiao oilfield is located between Qianjiang Depression and Jiangling De-pression of Jianghan Basin in central China.The oil is produced in the Qian-jiang Formation of the Eogene.Its specific gravity is more than 0.91,visco-sity more than 0.1Pa.s,sulphur content greater than 1%,saturated hydrocarbon content less than 38%.According to biomarker and other geological-geochemicaldata,it is inferred that the oil is derived from the Qianjiang Formation of Qianjiang Depression instead of Jiangling Depression.576|488|0更新时间：2023-05-30
- 摘要：The depth of Curie surface in Chuxiong Basin,Yunnan Province,is es-timated by application of aeromagnetic survey data.On this basis,the averagevalue of geothermal gradient of different regions in the basin is further calcu-lated.The result is that,geothermal gradients of the basin range from 1.4 to 3.9℃/100m,the average value is 2.8℃/100m.Three regions of high geother-mal gradient may be considered to be promising areas for hydrocarbon prospec-ting.598|440|0更新时间：2023-05-30
- 摘要：According to a comprehensive analysis of available new data including geolo-gical,geophysical,drilling,satellite images and various evidances of neotec-tonic movement in the Bohai Bay Basin and the adjacent areas,it is found thatthis region was controlled by NW-SE trend compressive stress field during themiddle and late stages of the Mesozoic,thus resulted the reactivation of theplatform,developed a series of NE trend compressed fractures and folds inechelon arrangement,the outcrops of which developed into favourable reservoirrocks with plenty of pores and fractures after long time wheathering and lea-ching.In the Eogene,the basin was controlled by tensile stress field in NW-SE direction,the basement rocks were tilted,leading to a series of rangesand depressions in NNE-NE echelon arrangement filled with rapid depositedsource rocks,as a compensation of the continuously subsided space.In the Neogene,the whole basin depressed in balance due to the clockwise shear move-ment.The range and depression structures then were covered by Neogene sedi-ments,thus formed the buried hills and provided necessary pressure and tem-perature for the generation of oil and gas.The rotational-shearing movement madethe oil and gas to migrate towards the buried hills.The evolution of the stressfield in the area is related to the subduction and compression of the Pacific-Kura Plate and the Indian Ocean Plate towards the Eurasian Plate in different timesand directions.The gushing of the mantle materials,on the other hand,canbe considered as the dynamic source of the tensile-stress field and the thermalsource for the evolution of hydrocarbon.566|415|0更新时间：2023-05-30
- 摘要：由地质矿产部海洋地质调查局“勘探二号”、“勘探三号”钻井平台在东海陆架盆地施工的“平湖二井”、“天外天一井”,最近分别试获了工业油气流。由“勘探二号”施工的“平湖二井”,位于东海陆架盆地浙东坳陷西湖凹陷的平湖构造上,距我国舟山群岛约260km。该井于4月19日钻至4105m,完成设计任务,经对主要含油气层段进行测试,获工业油气流。650|596|0更新时间：2023-05-30
- 摘要：It is shown clearly by lithologic nature,clay minerals and the characters of organic geochemistry that the basement of Kelameili region was full of risesand falls during the Permian,thus limited its deposition.During the Late Per-mian,the depressions subsided and extended in the early stage;it deepened and linked up in the middle stage,and extensively accepted sediments;but in thelate stage,the basement uplifted again,leading to sedimentary absence.The development history of the region provided favourable conditons for the forma-tion of source-reservoir-cover rock assemblage.Based on the source-reservoir-cover assemblage and trap conditions,it is suggested that the northeast margin of Wuchaiwan Depression,the north andwest margins of Dajing Depression,the east and west sides of the Zhangbei Uplift may exist lithologic oil pools which is composed mainly of sandbodies.The downthrow block of Kelameili piedmont fault,the nothern small block of the Shaquhe fault may exist oil pools of block-faulted type.520|419|0更新时间：2023-05-30
- 摘要：新疆克拉玛依油区,在八十年代采用先进技术,加强了勘探,探明储量逐年显著增加,取得了良好的经济效益。1979—1980年在克-乌断裂上盘石炭系变质岩中,相继打出了高产井,引起了人们的普遍关注,经过五年的努力,沿克-乌断裂带发现并开发了古生界变质岩油藏及推覆体油藏。使百口泉油田和白碱滩油田连片。而且还发现了乌尔禾夏子街油田。639|464|0更新时间：2023-05-30
- 摘要：The classification of hydrocarbon pools is an important approach to understand the formation characters and study the distribution regularities of the pools.Since single-factor classification can not explain the basic properties completely,the author suggests that a comprehensive classification should be adopted.Thatis to say,to term the pools according to the types of oil-controlling factors,trap forms,the origins and to subterm the pools in accordance of the textures of reservoir rocks and the states of hydrocarbon.Based on this pririciple,hydrocarbon pools can be divided into fold type,fault type,lithologic type,boundary belt type and further divided into 32 subtypes.Hydrocarbon pools of boundary belt type are further explained by the author.495|433|0更新时间：2023-05-30
- 摘要：台湾是我国现代油气勘探最早的地区之一,至今已有百余年的历史。早在1684年(康熙年间)就有关子岭枕头山(今台南县属)气苗的记述,1817年(嘉庆年间)、1861年(咸丰末年)有出磺坑油苗的报告,1878年(光绪四年)开始采用机械钻井和采油,1887年设立油矿局正式开发苗栗出磺坑地区的油气。1903—1945年日本侵占台湾四十三年,共钻井251口(其中生产井150口,探井27口),发现了台西盆地的锦水、竹东、山子脚、牛山、六重溪、冻子脚、竹头畸等七个油气田。这期间共掠夺原油约120.9万桶(约16.6万吨)、天然气10.4亿立方米(未计放空燃烧量)。642|477|0更新时间：2023-05-30
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