最新刊期
卷 13 ， 期 3 ， 1992
- 摘要：The main idea of studying the geological properties of natural gas in China is that to start from basin analysis,take thermal effect as fundamental principle,and use the view-point of dynamic equilibrium.Based on the theory of the relationship between basin,ther-mality,hydrocarbon,centered on the formation environment and the resources distribution of natural gas,three kinds of interrelated classification such as thermal,structural and oil-gas resources proportional classfications of the basins were proposed in this paper.Natural gas in China is mainly come from sets of immature sequences,coal-bearing formations,carbonate rook series and lacustrine clastic rooks,and belongs to five genetic types named as biogenic gas,biogenic-thermal catalytic gas,sapropelic gas,humic gas and deep sourced gas.The geological conditions to form big-and medium-size gas fields are:1.certain gas-generating capacity;2.conventional reservoir of considerable thickness;3.late gas-generating stage and pool-forming stage;4.the development of paleo-uplift and paleo-traps;5.favourable regional caprocks;6.faults and unconformities as passage ways forgas migration.There are mainly four gas-bearing domains in China including humic gas,marine carbonate rock gas,lacustrine sapropelic gas and biogas.They are mainly distribut-ed in four major gas provinces which are arranged in the following order:offshore North-west China,Central China and East China oil and gas provinces.The general policy fornatural gas exploration in China is"to explore large-medinm-and small size gas fieldscontemporaneously and to give consideration to long,medium and short terms planning"关键词：中国天然气;地质特征;盆热烃生运聚散动平衡;大中小并举;长中近兼顾601|452|0更新时间：2023-05-30
- 摘要：Structural system controls hydrocarbon distribution,of which first-stage structure of huge system controls the extent of oil province;two-stage or even secondary structure de-rived from the first-stage structure controls the distribution of oil fields within the province.Structural system resulting from rotation and shear,shear structural system and their compounding system play a considerably important role in hydrocarbon accumula-tion.Examples were used in this paper.关键词：地质力学;构造体系;油气勘查;新华夏构造体系;松辽油区;华北油区;江汉油区579|379|0更新时间：2023-05-30
- 摘要：Four problems on the evaluation and exploration of natural gas resources in China are discussed in this paper.1.Exploration stratagem of matural gas:our development policy is"to explore large-,medium-and small-size gas fields simultanneously,and to give consideraton to long-,medium-and short-term planning".2.Prospecting natural gas in oil-rich provinces:Songliao and Bohai Bay basins are the largest oil-bearing basins in China,and are relatively rich in different types of natural gas resources.Many medium-and small-size gas fields(pools)have been discovered in both basins.There are not only bright prospects,but also favorable conditions for explor-ing natural gas in the oil-rich provinces.Oil and gas can be explored simultaneously with low cost,high efficiency and high profit,and they can be explored and utilized in the near future.3.Resource evaluation and determination of exploration areas in structurally com-plex carbonate area in Southern China:an "overall geologic evaluation"should firstly be made in the area Where the carbonates have been croped out,and then choose some areas for key researches and experiments on exploration methods.The principles for favorable exploration area determination are(1)keeping away from the anticlinorium and focusing on the synclinorium;(2)preserving hydrocarbon better in low thermal regions than in high thermal regions.4.Gas exploration in low-porosity and low-permeability tight formation:we have successful experiences and unsuccessful lessons in exploring tight formation gas.Reason-able caution should be taken in exploration deployment for such gas.关键词：天然气;含气领域;评价选区;致密层气;碳酸盐岩区561|541|0更新时间：2023-05-30
- 摘要：Based on the study of mudstone compaction,1.the erosion and the deposit thickness of the Cretaceous in Shaanxi-Gansu-Ningxia Basin are calculated and the activity for dif-ferent places and different faults in the Cretaceous are contrasted;2.the characteristics of excessive pressure both in vertical and horizontal distribution are discussed according to the fluid pressure calculated;3.the relation between known oil-bearing situation and hy-drodynamic condition were analysed on the basis of excessive pressure distribution and re-ferring to the water salinity and type.关键词：陕甘宁盆地;泥岩压实;过剩压力;水动力条件574|382|0更新时间：2023-05-30
- 摘要：Two independent but interrelated Cenozoic structural systems—extensional structure and strike-slip structure developed in the Liaodongwan-Xialiaohe Basin.The extensional structure was the main structure styled in half graben-half horst assemblage that con-trolled the formation and evolution of the basin.The strike-slip structure was distributed in the east margin of the basin,reconstructed the extentianal structure and consisted of ligh-angle or nearly vertical basement strike-slip faults and verious associated structures including linar graben and horst,echelon folds,volcanic and mudstone diapir structures.The strike-slip structure with a dextral character may be related with activity of Tanlu deep fault since Oligocene.关键词：构造样式;伸展构造;走滑构造;郯庐深断裂;辽东湾-下辽河盆地699|1281|0更新时间：2023-05-30
- 摘要：The Wutong Formation of Upper Devonian is widely distributed in Southern Jiangsu Province and storm deposits developed in many places in this formation. According to the analysis characteristics,the storm deposits are considered to be proximal facies developed in litteral environment. A new kind of mega-ripple marks were found in the storm de-posits and named"tri-ridge ripple markes"which were resulted by interference of storm vortex flow in water bottom. So the authors point out that the tri-ridge ripple marks are one of discriminative feature for storm deposit especially for proximal storm deposits.关键词：苏南;五通组;风暴沉积;滨海相;三脊波痕632|515|0更新时间：2023-05-30
- 摘要：Mizhi intra-platform depression developed on the broad shallow water carbonate platform in Ordos epeiric sea during Early Ordovician.The area of the depression is about 70000 km2.It was formd by the combined effect of both the differential subsidence of the platform interior and the rise of sea level.The evolution process can be divided into three periods(lower Majiagou,upper Majiagou and Fengfeng).Each period can be subdivided into three stages.The first stage differential subsidence occurred in the platform interior,and sea level rose;the second stage,intense differential subsidence and evident rise of sea level resulted in formation of Mizhi intra-platform depression;the third stage,differential subsidence weakened gradually,the sea level fell,and the depression was filled.The evolution of Mizhi depression underwent three large-scale transgressive-regressive changes and formed three supercycles and three stratigraphic sequences corresponding respectively to lower Majiagou,upper Majiagou and Fengfeng Formations.Three perfect source-reservoir-cap assemblages were formed from the dark organic-rich micrite at the top of the transgressive limb of each supercycle to the evaporite at the upper part of the regres-sive branch.Mizhi intra-platform depression is a gas-bearing sag because of high organic maturation.Recently,the significant discovery of gas in Fengfeng sequence indicates that intra-platform depression has great potential to accumulate gas.The gas accumulated in porous dolomite reservoirs related closely to palaeokarst.A geological model shows that four types of stratigraphic traps existed in the depression.关键词：鄂尔多斯盆地;内台地坳陷;碳酸盐台地;陆表海;沉积旋回;层序地层;含油气性评价851|446|0更新时间：2023-05-30
- 摘要：Shaya uplift in North Tarim Region is situated between Amang and Kuqa oil-generating depressions with rich hydrocarbon source.Oil and gas accumulation is con-trolledby the large embossment,stratigraphic wedges,superposition structures and local structures developed on the uplift.The pool-forming model is considered to be:1.Three-layer structure in vertical.The upper one is composed of Meso-Cenozoic sandstone and characterized with secondary accumulation;the middle one is composed of Middle-Upper Paleozoic sandstone in wedge-shape,and characterized with primary and secondary accumulation;the lower one is composed of percolation bed and interior layer of weathered crust in Lower Paleozoic carbonate rocks,and characterized with primary accu-mulation. 2.Three accumulation fields in lateral including(1)the superimposed area of upper and lower structural layers in the north part of Shaya uplift;(2)the superimposed area of Upper-Middle Paleozoic wedge between two unconformities in the margin of the uplift;(3)three completely superimposed area in the south part of the uplift.关键词：塔里木盆地;油气富集带;古隆起;地层楔形体;构造圈闭;不整合面;披覆构造;油气藏类型748|492|0更新时间：2023-05-30
- 摘要：The Ordovician gypsums in Linfen,Shanxi Province,can be divided into four types,namely autochthonous precipited,allochthonous deposited,diagenetic replaced and veinfilledtypes.Theautochthonousgypsum includinglaminated gypsum,banded gypsum and massive gypsum,which were formed by chemical precipitation in saline water depressions of shallow platform.The diagenetic replaced gypsum contains stromatolitic gypsum,oolitic gypsum and nodular gypsum which were formed in the uplift of the shallow platform and occurred in vadose zone during the penecontemporaneous stage.The allochthonous de-posited gypsum includes rudaceous gypsum and edgewise gypsum formed in places be-tween the depressions and the uplifts.The vein-filled gypsum was formed in transforma-tion process of gypsum and anhydrite related to abnormal high pressure resulted from de-hydration and the absorbing expansion.关键词：山西临汾;奥陶系;石膏岩658|407|0更新时间：2023-05-30
- 摘要：Lishu area in southern Songliao Basin is a multi-overlapped fault-depressed basin de-veloped upon the Premesozoic metalmorphic basement during Late Jurassic-Middle Creta-ceous.The total thickness of Mesozoic strata in Shiwu fault-depression is about 10000m.The Wujiazi Formation is an important oil-gas source rock.The Quanto sandstone reser-voir developed in depression stage is the main deep-generated low-reserved reservoir. The distribution and thermal evolution of the source rock and two structural move-ments(late Denglouku and Nenjiang stages)controlled hydrocarbon distribution.The steep slope belt in the north of Shiwu faulted-depression is the principal area for hydro-carbon accumulation.From deep depression area to upwelling area,the present area could be divided into three semi-circle hydrocarbon accumulating belts such as Houwujia-hu gas belt,Xiaowujiazi oil-gas belt,Yangdachengzi thick oil belt.关键词：松辽盆地;梨树地区;盆地演化;五家子组;泉头组;油气藏形成条件;油气远景评价970|357|0更新时间：2023-05-30
- 摘要：Marine carbonate rocks in South China cover an area of 200?104 km2.From Upper Sinian to Lower Triassic,the total thickness of source rocks is up to several thousand me-ters with rich organic matter.But preservative condition underwent serious damage as in-tensive tectonic movements took place in Indo-China period.As faults and denuda-tion caused surface water to distroy reservoir,thus favourable preservation region must be the one that has fine covery rocks in vertical and good sealing hydrogeological condition in horizontal.The Middle Triassic-Jurassic,Silurian,Lower Cambrian in the study area are perfect regional covery rocks which may seal gas reservoir with more than 500m high gas column.There are three kinds of preservation area:1.Paloozoic bare zone;2.Meso-Cenozoic covering zone;3.The frontal zone of nappe structure.关键词：中国南部;海相;碳酸盐岩;油气保存条件795|447|0更新时间：2023-05-30
- 摘要：Hierarchy analysis in reservoir researches is a new methodology including hierarchy characterization and hierarchy modelling.The method made good use of stratigraphy,se-dimentology,event geology and structural geology as theoritical grounds,outcrop,recentsediment survey,flume experiment,seismic stratigraphy,sequence stratigraphy,log in-terpretation,formation test as means,and modern geomathematics,computor modelling as tools to do hierarchy analysis.The analysis process inreservoirs can be done by deter-mination,description,interpretation,modelling and combination of hierarchy.关键词：储层研究;层次表征;层次建模655|582|0更新时间：2023-05-30
- 摘要：Based on a large number of data and examples,the present trends and characteristics of world petroleum exploration have been summarized.By a research and analysis,this paper suggests the new development of petroleum geology,the application of plate tecto-nics theory,organic chemistry,seismic stratigraphy and mathematical geology,as well as the technique of reservoir assessment.关键词：油气勘探;大油气田;板块构造;有机地球化学;地震地层学;数学地质;储层评价1146|1016|0更新时间：2023-05-30
- 摘要：旧中国的地质调查机构中,地质调查所是历史最久、规模最大的一个。我国许多有成就的地质学家,都曾经在那里工作过。这个机构所做的工作,包括石油地质勘查在内,无论是野外勘查、室内研究,都非常出色。486|467|0更新时间：2023-05-30
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