最新刊期
卷 16 ， 期 4 ， 1995
- 摘要：A brief review for twenty five years of Deep Sea Drilling Project and Ocean Drilling Program(DSDP/ODP)was made in present paper. It is believed that the scientific ocean drilling has been the cradel of the modern geoscientific thought and global geology. About 182 km of deep sea cores recovered from the drilling of every ocean have verified directly the theory of global plate tectonics, carried within itself the newly-emerged geoscience branchpaleoceanograhpy,and provides a great quantities of information for such fundamental geoscience problems as the global changes, the high-resolution global stratigraphy, the deep ocean sedimentology,the global events and the origin of hydrocarbon resources in the world's oceans. Finally,brief prospects for the 21st century's ocean drilling program is discussed as well.关键词：大洋钻探;全球地质学;全球板块构造学说;高分辨率地层学;古海洋学;全球演化562|494|0更新时间：2023-05-30
- 摘要：The coast belt surrounding Bohai Bay of China contains a lot of continental oil and gas fields that extending to the sea. Hydrocarbon exploration and development in this region is very difficult due to the complexity of the earth surface environment. Within the region,petroleum geological condition is particularly favourable for the formation of oil and gas fields. There are well-developed source rocks, multiple reservoir series and types, wellmatched source-reservoir-cap rock assemblages, various kinds of oil and gas tarps and zonaldistributed structures. It is a complex body with multi-type of oil and gas pools that vertically superposed. In recent years, an overall exploration has been carried out by adopting the new technique of seismic exploration, boring and ocean engineering etc., a great number of high production wells in Shengli, Dagang Liaohe and Jidong Oilfieds have been drilled and considerable oil and gas reserves have been found.关键词：渤海湾;滩海区;油气资源;工程环境;勘探成果557|699|0更新时间：2023-05-30
- 摘要：Dark-green stiff clay of Late Pleistocene in the Yangzi River Delta is a buried Paleosol Bed.It possesses the basic property of soil:1.contains root holes,fragments and dark network humus of plants;2.underwent clayization;3.eluviaton and illuviation could be found;4.lacking of lamination.The distinct defferences between the paleosol and ordinary soil are:1.The upper part of the paleosol is light,stiff,and the ratio of hyperconsolidation is 2.1～2.2,but the lower part is less consolidated.This is contrary to ordinary soil; 2.The paleosol is green and yellow-green;3.The paleosol contains various types of nodules.They are mainly pyrite→siderite→dialogite→limonite and pyrolusite from top to bottom,reflecting a transition process of reducing-oxidizing environment.Oxygen-rich sea-water resolved the organic matter in the paleosol through the action of bacteria.With the consumption ot free oxygen and the reduction of oxidized ions,HS-,Fe+2,Mn+2 thus formed.This resultes in distinct changes of the colour,the hardness,the nodules and the clay minerals of the paleosol,thus changing the whole of the soil's property.关键词：长江三角洲;晚更新世;绿色硬粘土;古土壤;成岩作用597|537|0更新时间：2023-05-30
- 摘要：Algal-sponge reefs have been discovered recently in the upper part of the Lower Ordovician Fengxiang Formation, and their age corresponds to Late Tremedocian. The reefs consist mainly grainstone, mudstone,boundstone and bafflestone. The depositional sequence of the algal-sponge reefs suggests a evolution series starting from shallow to deep. The reefs grew on relief bases, and then enhanced the initial forms of the bases as they grew. Bounding and baffling were the main factors in the formation of Calathium-algal and algal-PulchrilaminaArchaeoscyphia communities.关键词：下奥陶统;藻－海绵礁;宜昌611|855|0更新时间：2023-05-30
- 摘要：Jiralangtu Depression is located at the southwestern part of the Wunit subbasin, Erlian Basin. It is a NE-trending half-graben with a fault belt in the north side and an overlap in the south side. The depression subsided in the early stage and uplifted in the late stage. Two kinds of genetic heavy oils could be found within the depression such as primary heavy oil and biodegraded heavy oil. Each of them has its own formative mechanism and geochemical features. Geochemical analysis of the crude oils shows that the heavy oil pools distributed along the southwestern slope of the Jirgalangtu Depression contain slightly-intermediately biodegraded immature heavy oils.关键词：二连盆地;吉尔嘎朗图凹陷;稠油成因;生物降解稠油;微量金属元素;降解序列621|653|0更新时间：2023-05-30
- 摘要：Fractal pore measurement of 28 samples collected from Upper Jurassic sandstone were made using a statistical analysis of structural features on fracture surfaces of SEM pictures.The fractal pore measurement indicates that there are two types of fractal pores. The depositional fractal pores and diagenetic fractal pores. The depositional fractal pores are formed of original irregular grain surfaces during deposition. The fractal dimension is less than 2.50,the fractal porosity is generally less than 5%, the fractal pores amount to 15% of the total pores. The diagenetic fractal pores resulted from authigenetic clay minerals, qaurts and dissolution of fieldspars. The fractal dimension of those fractal pores is greater than 2.50,the fractal porosity is usually higher than 5%, and the fractal pores are more than 50%-80%. No fractal pores caused by carbonate cements could be found. Almost all the pores in mudstone are fractal pores while there is no fractal pores in diabase.关键词：交南断鼻;砂岩储层;分形孔隙;分形维数;沉积分形;成岩分形692|547|0更新时间：2023-05-30
- 摘要：The heterogeneity, the complexity of source rock distribution, the heterogeneity of source rock types and evolution that resulted from multi-stage tectonic actions in Shiwu Fault-Depression are the main factors causing oil,oil-type gas and coal-gas to distribute regulaly. Multi-series of reservoir-cap assemblages and multi-stage trapping provide multi layer reservoir spaces for oil and gas enrichment; faults and unconformity surfaces are passages for hydrocarbon migration and accumulation. The key period in forming hydrocarbon pools was Nenjiang stage and the key factor was the matching of trap formation period with hydrocarbon generation, migration and accumulation period. According to above mentioned, two hydrocarbon pool forming types, three pool forming ways and six pool forming models have been concluded.关键词：十屋断陷;不均一性;油型气;煤型气;分布规律;成藏模式592|496|0更新时间：2023-05-30
- 摘要：In application of the formation test data of well drilling and well completion collected from some early exploration wells, node analysis was made so as to draw a reasonable plan for the production forecast and production regulation. On the basis of the node analysis principle and early well test data, the present article suggests the basic equations to draw input and output curves and provides friction-damping coefficient for new prospect areas. The above mentioned method has been proved to be very useful in certain oil fields' production of west China for the past five years.关键词：节点分析;地层测试;产能配制516|666|0更新时间：2023-05-30
- 摘要：Non-structural traps are well developed in Tarim Basin and the types are various. The traps include: overlap traps and cut-blocking traps relating to unconformity;buried-hill traps relating to paleo-uplift; lithologic traps relating to the sedimentation of river, delta and shallow lake. The formation of the non-stractural traps was controlled by paleostructural framework. The traps formed primarily in the Hercynian, Indo-China and Yenshan Periods and were distributed in paleouplift and paleoslope belts,thus constituting a paleouplift-buried hill-lithologic trap series.关键词：塔里木盆地;非构造圈闭;特征;分布规律507|951|0更新时间：2023-05-30
- 摘要：The conglomerate reservoir of the Alshan Formation in Mongolin Oilfield is special in containing abundant volcanic debris. The reservoir could be divided into polygenic conglomerate, tuff conglomerate and volcanic breccia.The reservoir is characterized by low compositional maturity and low textural maturity.The conglomerate with coarse complex matrix is more favourable for oil reservation, and its main reservoiring spaces are intergranular matrix soluted pores. The polygenic conglomerate contains primarily intergranular soluted pores and has better permeability; the tuff conglomerate and volcanic briccia contain respectively intragranular pores and residual intergranular pores, and their permeability are poor.关键词：蒙古林油田;砾岩储层;岩石学;物性特征702|632|0更新时间：2023-05-30
- 摘要：Based on the geological condition,reservoir rock distribution and seismic reflection characteristics of the lower member of the Jiufutang Formation, Upper Jurassic in Jiaonan Structure, LudongDepression,it is proposed to take the lower member of the formation as the unit to make reservoir prediction of large section sedimentary model by velocity spectrum processing; to take sandstone set as the unit to make comprehensive reservoir prediction by seismic.data processing F to take interwell fractal analysis as theoritical basis and combine it with geostatistics to make individual sandbody predicting. The above memtioned prediction methods were adopted to predict hydrocarbon reservoirs and their distribution. It is constered that oil pools in the higher part of the structure are controlled by the strueture but that in the raking side possess the property of lithologic-structural pools. The sandbodies in the north side of Jiao-2, Jiao-12, Jiao-15 well-blocks and the southwest side of Jiao-2, Jiao-15 well-blocks are rather thick and have favourable physical features and hydrocarbon trapping condition.关键词：陆东凹陷;交南构造;九佛堂组;储层预测;含油性预测611|452|0更新时间：2023-05-30
- 摘要：By making use of log data and geological information, analyzing lithologic characteristics, the physical and electric behavior, the oil-gas bearing potential of reservoir rocks as well as their relations with each other, it is possible to establish the corresponding relations between log data and geological information. According to these relations, every well and every formation was analyzed and calculated so as to obtain precise reservoir parameters of the target formation in a block. The most important parameters include: shallness, mineral ingredients in the rock framework, the mean value of grain size, porosity, permeability .oil-saturation and the available thickness of the reservoir. The vertical andplanar distribution of the parameters reveals directly the variation property of reservoir's heterogeneity, porosity and permeability as well as oil and gas distribution.关键词：储层测井;多井评价;优化;孔隙度;渗透率;饱和度;有效厚度;泥质含量568|812|0更新时间：2023-05-30
- 摘要：The seismic analysis of the Early Cretaceous fault-subsidence stage in South Songliao Basin suggests that the depositional system including alluvial fan-delta, subaqueous fan, delta and fan-delta developed well, and they are favourable for oil and gas accumulation. The Denglouku Formation in the study area could be divided into shallow buried-weak compacted diagenetic factes,supergene dissolution diagenetic factes, deep-buried dissolution diagenetic factes and deep-buried compaction-dissolution diagenetic factes. The first two kinds are favourble factes for hydrocarbon accumulation.关键词：断陷期;沉积相;地震相;成岩作用;成岩相564|457|0更新时间：2023-05-30
- 摘要：Fractal technique is a new method of studying reservoir pore texture.The process includes: 1.making of SEM imagines;2.digitizing SEM imagines;3.counting geometrical features as a function of feature size;4.fitting the distribution probability of the feature and caculating fractal porosity.The principle and detailed technical process of the analysis are discussed in this paper,and the relative computer program is also developed. The result of practical use has been proved to be satisfactory.关键词：特征体;分形孔隙;储层;孔隙结构540|623|0更新时间：2023-05-30
- 摘要：Though the adaptability of sequence stratigraphic stereo model is poor,but the principle and the method of the model is still useful for continental basins. According to the principle of sequence stratigraphy, the Lower Cretaceous could be divided into five unconformities (T5,T4, T3, T1-1, T03) and three sequences. Analysed cores,well log and geological data, the first and the maximum lacustrine flooded areas have been defined, and the system realms corresponding to every sequence have been divided.It is proposed that sequence 1 is a incompletely developed one containing only low water level system3 sequences 2 and 3 are completely developed. Through sequence stratigraphic study, one can understand the properties and significance of the reflecting boundary described before Tnore clearly, and can know more about the sedimentary characteristics and spatial distribution of various sedimental bodies(as sandbodies).关键词：层序地层学;沉积体系;油气勘探;松辽盆地587|761|0更新时间：2023-05-30
- 摘要：Sandstone reservoirs of the Jiufutang Formation are submarine fan deposits which could be divided into middle and outer fans. The submArine fans underwent three evolution stages such as development, maturation and decline stages that correspond to Ⅲ, Ⅱ and Ⅰ sand formations, and these sand formations, in turn, equal to outer fan, the outer marginal blade and the inner marginal channel of the mid-fan. The porosity of the reservoir did not change much but its permeability varied intensely. This reveals serious heterogeneity of the sandbodies.According to the capillary pressure, the reservoirs could be divided into mid pore-mid permeability, mid pore-low permeability and mid pore-very low permeability types.关键词：陆东凹陷;九佛堂组;水下扇;毛管压力;储层分类559|482|0更新时间：2023-05-30
- 摘要：罗志立教授等主编的《龙门山造山带的崛起和四川盆地的形成与演化》一书,已由成都科技大学出版社出版问世。这是一部以论文形式构成的专著,分四编容纳50篇学术论文共90余万字的巨篇,是一部多学科、多角度、多层次、多维面的学术专著,反映我国学者、专家在这一领域的研究成就,是一部代表当代研究水平的力作。612|494|0更新时间：2023-05-30
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