最新刊期
卷 11 ， 期 4 ， 1990
- 摘要：The oil and gas reservoirs that are mainly composed of continental feldspar-rich sandstones in the Songliao Basin have a distinctive diagenesis model due to high geother-mal field of the basin.After the study of diagenetic indication for the sandstone reservoirs buried at the depth of 500-3200m based on thin section,X-ray diffraction,SEM,electronic probe,the uniform temperature and salinity of the gas-liquid inclusions in the overgrowth of qartz and the quantitative analysis of diagenetic minerals in cathodoluminescence,this pa-per sets up a diagenetic model of feldspar-rich sandstones,divided the diagenetic evolutioninto 3 stages and 5 phases such as early stage,the early and late phases of the middle stage,the early and late phases of the late stage,and then points out three zones of secondary pores.关键词：松辽盆地;富长石砂岩;成岩模式;孔隙演化;次生孔隙发育带595|490|0更新时间：2023-05-30
- 摘要：Dachiganjing structural belt in the east margin of the Sichuan Basin which is com-posed of reversed linear high anticlines and hidden linear low anticlines under the reversed wing is a successful example in trapping gas in the main structure and the hidden structure under the circumstances that the high anticlines have been denuded partially and subjected to karst immersion on the shallower part.The main gas-bearing beds are Carboniferous soluble-pore dolomites and karst fissure limestones of the Permian Yangxin Series,the lat-er will be the main exploration target in after years The gas pools are mainly controlled by structural trap and gas-water differentiation distributed above-2500m in the main strucutre and above-4100m in the hidden structure.Scatters seriously the gas in the gas-bearing dolomites and limestones of the first member of Triassic Jialingjiang Formationdue to water immerion.The distribution of gas pools is dominated by“Water-immerion window”,structural trap and gas-water gravity differentiation,so gas is primarily preserved in the south plunging end of the main structure.The main difficulty for pre-exploration is hard to identify the structures formed by steep dipping beds through the seis-mic prospecting,thus the localities of exploration wells are almost always inaccurate.Ifwe could set the well localities on high positions to the best of one's ability,the efficiencyof success would be able to raise.Since the hidden low anticline which is closely related to the reverse of steep wing was formed late,the gas has less scatter and abundant reserve,it will be one of the main areas for gas exploration.Water of hydration differs from gra-vity water in physical properties,so their preservati on conditions and moving regular itiesare different.It is undoubtedly in appropriate to lump together the two when analyse the pressure field and gas-water relationship.As gas-producing fracture is a kind of linear medium,the“balance drilling”theory is not suitable for fracture gas pools.If we could prepare a kind of well-controlled device of high property and sufficient safety and developgas-obtaining technique from gush,we would be able to make a new breakthrough in the exploration of fracture-type gas pools.关键词：四川盆地;大池干井构造带;裂缝性气藏;重力水;结合水;岩溶水;压力场;平衡钻进;气藏动态;油气勘探613|530|0更新时间：2023-05-30
- 摘要：A new technique—Ion microprobe is used in the study of amorphinite.It is consi-dered that CH/C,CH3/C can be used as parameters of relative hydrocarbon generation potential.关键词：无定形体;离子探针;干酪根638|725|0更新时间：2023-05-30
- 摘要：Lacustrine carbonate rocks,distributed mainly at the upper part of the 4th Member and the middle and lower parts of the 1st Member in the Shahejie Formation,are impor-tant Eogene reservoirs in Bohai Bay Basin.They can be divided into framework,granular and micritic carbonate rocks.The framework carbonate rock bodies consists of reef,mound and framework organism layer.Reefs are predominently distributed in the clear water area on the subaqueous platforms or uplifts,the reef-core and front reef microfacies of which have the best hydrocarbon reserving condition with framework pores,organic visceral pores and solution pores.Mounds are distributed in the steep slope areas of fossilis lands or basins,the cores of which are the greatest in thickness,and the best in pores.Biobeds are distributed in the gentle slope areas of the basin or fossil islands,or in the deep water areas with terrigenous debris.These beds are usually not so thick and the pores are homogenous.The granular carbonate rock bodies,composed of beach,barrier,bar,sandpit and algal beach,etc.with fine primary and secondary pores,are distributed in shoreand shllow lake areas.The micritic carbonate rocks that are formed by chemical and bio-chemical deposition are distributed in shallow to deep lake areas,the reserving spaces in-clude interlayer fractures and solution channels.关键词：湖相碳酸盐岩;沉积模式;渤海湾盆地;下第三系713|512|0更新时间：2023-05-30
- 摘要：The thrust tectonic belts in the south margin of the Tianshan Mountains were region-ally controlled by N-S horizontal compressing stress field,thus forming E-W stretching fold-faulted tectonics.Those are macroscopically characterized by fan or reverse fan shapes.The belts could be divided into three kinds:1.thrusts mainly formed in Hercynian and distributed in the south flank of the Halicktao anticlinorium;2.imbricate tectonics formed in Indosinian-Yenshan Epoch and distributed in the fore part of south Tianshan;3.nappe tectonics characterized by thrusting up to several kilometres along sliding planesat low angles,developed in Himalayan Epoch and distributed in foreland depressions and the neighbouring inter montane basins.It is a intensive reformation to the thrust tectonics of the Hercynian and Indosinian-Yenshan Epoches.关键词：天山南缘;塔里木盆地;逆冲构造;叠瓦构造;推覆构造;构造演化718|560|0更新时间：2023-05-30
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BEHAVIOUR OF VISIBLE FLUORESCENCE OF AROMATIC HYDROCARBON IN COAL SERIES AND GEOLOGICAL SIGNIFICANCE
摘要：This paper studies the behaviour of visible fluorescence of more than 100 aromatic fraction samples extracted from various coal-series in China.The result shows that highly condensated aromatic compounds increases gradually during the maturation process of or-gantic matter,thus causing fluorescence“red shift”while the weathering and oxidization might cause fluorescence“violet shift”.The behaviour of fluorescence of aromatic hydro-carbon may be taken as fine potential index for maturation.关键词：煤;可溶有机物;显微荧光分析;煤系芳烃610|655|0更新时间：2023-05-30 - 摘要：The pore texture and origin of the Carboniferous-Permian reservoirs in the south slope of wulangar rise in the north part of Ordos Basin is studied by casting thin section,injecting mercury,SEM,etc..The result indicates that pore texture is not so good and the pores are mainly very small intra-interstitial materials and dissolved intragranular ones.The capillary pressure curves show dominatly type-4 and -5,especially type-5.Thepore texture therefore should be defined as grade 4 or grade 5.The reason caused the poorpore texture is related to the complicated and intensive diagenesis.Within 4 diagenesis stages,the compaction,filling and replacement in the first two stages greatly decreased the pore spaces,though there was dissolution in the third stage,they did not develop well and were filled again in the last stage.According to the fact that well No.Y17 has producedgas,the pores of the intra-interstitial kaolinite may still be available reserving spaces.关键词：储集层;孔隙类型;毛管压力曲线;石炭-二叠系;鄂尔多斯盆地1138|463|0更新时间：2023-05-30
- 摘要：Early Ordovician organic reefs in Songzi were firstly discovered by the authors.The reefs can be divided into algal buildup reef,stromatolite beded reef and lime-mud buildup reef,of which the algal buildup reef is best represented and composed of a series of mound,bread-like,beded-like reef bodies.Individual reef bodies are 1.5-22m high,6-50m wide,and the ratio of high/wide is 1:3.6-1:4.5.The main reef-building or-ganisms in situ are blue-green algae,recept aculitid algae,sponges and a few bryozoans.The accessory organisms are cephalopods (Hopecicoceras,Cameroceras),brachiopods,trilo-bites,echinoderms,bivalves,ostracods,etc.A complite reef body consists of reef base,reef core,reef cap,and interreef sedi-ments.The reef core can be divided into three microfacies from bottom to top:1.bind-stone,2.baffle-bindstone,3.bind-bafflestone.Correspondingly,the development of the reef bodies can be divided into three periods:foundation stage,development stage and decline stage.关键词：生物礁;藻礁灰岩;沉积环境;早奥陶世;松滋651|511|0更新时间：2023-05-30
- 摘要：Four fossil reef communities can be differentiated from Kefeng reef,Longlin region,Guangxi,in which three communities belong to Middle Permian (from Misellina zone to Neoschwagerina zone),and one belongs to Late Permian (Palaeofusulina zone).Many ofthe 25 genera and 38 species found here are restricted to Sphinetozoa,Inozoa and Scle-rospongiae.Baesd on the general characteristics of the communities,the sequence of Ke-feng reef can be divided into four distinct reef-cycles.And these cycles are correspongding to the flourish of the reef-building sponge communities.Some statistical data suggest that the size and form of calcisponges can indicate different environment.In general,those sponges lived in a higher-energy water are always smaller in their form and denser in distribution.The binding organisms play an important role in reef development.They are very abundant in quantity and important to the build-ing up a typical reef.关键词：生物礁;钙质海绵;生物群落;古生态;广西542|581|0更新时间：2023-05-30
- 摘要：The formation and evolution of mud-mounts in the Yinggehai Basin are closely related to hydrocarbon generation,migration and accumulation.1.The mud mounts are distributed in Oligocene Yacheng Formation and the Miocene Sanya and Meishan Formations.The formation,evolution and distribution is decided by material base—the rapidly deposited,high thickness and undercompacting mud shales,regional dynamics and gravity factor.2.Mud mounts themselves are source rocks;abnormal high temperature and high pressure produced by their evolution is the motive force for hydrocarbon generation and migration,especially for high pressure natural gases soluted in water.3.The mud mount uplift structural belts are mostly distributed in the central part of the basin or the deeper parts of the depressions that are favourable locations for hydrocar-bon migration and accumulation.It is predicted that the pools of mud mounts within thebasin are mainly anticline,semianticline and noze types,and then faulted-noze type.4.The mud mount uplift structral belts in the central part and the fault-block structural belts in the southeast,having abundant hydrocarbon source and fine accumulation and preservation conditions,are favourable enrichment zones,and should be taken as im-portant targets for recent exploration;No.1 fault-structural belt could be taken as explo-ration target in the future due to its poor accumulation and preservation conditions.关键词：莺歌海盆地;红河大断裂;泥丘;第三系;油气资源评价561|580|0更新时间：2023-05-30
- 摘要：The Mesozoic sedimentary-structural units within the area of 500000 km2 to the westof the Helan Mountains,south of the boundary line,east of Xinjiang and north of the Qi-lian Mountains are dividid into Alxa depressed region (including 11 depressions) andBeishan uplift region according to recent data of geology and geophysical exploration.Thebasements are composed of metamorphic rocks belonging to Pre-Caledonian,Caledonianand Hercynian Epoches and the overlying beds are composed of Meso-Cenozoic sedimentswhich range from 2000 to 8000m in thickness.The structural evolution shows distinctdifferentiation in east and west parts.Middle-Lower Jurassic and Lower Cretaceous sediments are better developed in thewestern depressions which have the conditions for hydrocarbon generation,but the areasare usually not broad enough (in more than 80 depressions,only 40% have the areasgreater than 1000km2).The Middle-Lower Jurassic to the west of Ejin Qi-Alxa Youqi,and the Lower Cretaceous in the northwest part of the corridor,Zongnan and Zongbei De-pressions have better oil potential.关键词：贺西地区;阿拉善坳陷区;含油气盆地;构造演化;中下侏罗统;下白垩统;油气;资源评价585|439|0更新时间：2023-05-30
- 摘要：According to the Paraffinicity and aromatizaion of light hydrocarbons,the familycomponents of C6,C7 and C8 hydrocarbons in condensates,five types of condensates inSichuan basin are classified.1.Mature condensates from terrestrial materials.2.supermature condensates predominatly from terrestrial materials.3.Mature condensates from lacustrine sapropelites.4.Supermature condensates from marine sapropelites.5.Mixed supermature condensates from different origion.Other geochemical data confirm that the condensate classification on the characters of light hydrocarbons is reliable.关键词：四川盆地;凝析油;有机地化特征537|660|0更新时间：2023-05-30
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