川东南地区灯影组储层特征及其控制因素研究

川东南地区灯影组储层特征及其控制因素研究 施泽进，彭俊，王勇 “ 油气藏地质及开发工程 ” 国家重点实验室 (成都理工大学)，成都 610059 摘要 川东南地区灯影组是一套以潮坪相白云岩为主的地层，其储层主要分布在中、上 部。通过对灯影组储层薄片观察及物性资料分析发现，储集空间主要为次生溶蚀孔、洞、 缝，储层类型为低孔低渗的裂缝-孔洞型储层。储层发育受沉积相和成岩作用的双重影响， 沉积相是储层形成的基础，成岩作用则决定了储层的储集性能好坏；压实作用、胶结作用、 硅化作用是破坏孔隙的主要成岩作用，溶蚀作用(特别是表生期古喀斯特作用) 、破裂作用 是发育次生孔隙的主要成岩作用。 关键词川东南；灯影组；储层特征；控制因素 Reservoir features and controlling factors of Dengying Formation in Southeast Sichuan, China SHI Ze-jin, PENG Jun, WANG Yong State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610059, China Abstract: The Sinian Dengying Formation is a set of tidal flat dolostone in Southeast Sichuan. The dolostone reservoir is dominantly distributed over the top and middle of the Dengying Formation. Based on the flake observation and physical properties data of the reservoir in Dengying Formation, this study indicates that the main reservoir spaces are pores, caves and fissures with secondary origin and the reservoir is a fractured-porous type with low porosity and low permeability. The reservoirs development is influenced by both sedimentary facies and diagenesis and the sedimentary facies are the basis of its development and diagenesis process controlled by the reservoirs ability. Cementation, compaction and silicification are the major diagenesis for destroying pores. Denudation and fracturing are the major diagenesis for forming secondary pores. Key words: Sichuan Basin; Dengying Formation; reservoir characteristic; controlling factors 川东地区下-中三叠统的锶同位素曲线及年代地层划分 常晓琳，石和，罗威，宋莹，万明礼 成都理工大学沉积地质研究院，成都 610059 摘要从川东邻水和渠县采集的 73 个下中三叠统锶同位素样品获得了对应于地层累计 厚度的锶同位素演化曲线。与 C.Korte 等利用特提斯和中欧地区 219 个锶同位素数据及古 生物学研究所得出的对应于地质年龄值的上二叠统-三叠系锶同位素曲线对比，将川东下 中三叠统剖面进行了年代地层的划分对比。根据剖面中获得的牙形石化石，讨论了对四川 地区三叠系底界的确定，认为应尽可能采用综合的地层学方法对沉积地层进行年代地层划 分对比。 关键词川东地区; 三叠系 ; 锶同位素地层学; 三叠系底界; 牙形石 - 2 - Sr isotopic curve of the Lower-Middle Triassic of East Sichuan and the chronostratigraphic division CHANG Xiao-lin, SHI He, LUO Wei, SONG Ying, WAN Ming-li Institute of Sedimentary Geology, Chengdu University of Technology, Chengdu 610059, China Abstract: Strontium isotope stratigraphy is a new method to divide and contrast strata. This paper sets up an evolution curve of the strontium isotopic composition corresponding to the accumulative thickness based on 73 unaltered marine carbonate samples collected from Linshui and Quxian of East Sichuan. It is correlated with a curve corresponding to geologic time set up by C.Korte et al in the Upper Permian-Middle Triassic. The curve is based on 219 unaltered marine carbonate samples collected from the Asian Tethys and middle Europe and on the study of paleontology. And the section of Middle-Upper Triassic in East Sichuan is dated. The base of Triassic in Sichuan is discussed and defined according to the conodonts collected from some sections, and synthetical methods should be used in the chronostratigraphic division. Key words: East Sichuan; Triassic; strontium isotope stratigraphy; base of Triassic; conodonts 三江盆地绥滨坳陷下白垩统煤系烃源岩评价 侯仔明 1，徐宏节 2，胡志方 2 ，袁桂林 1，刘明慧 1 1.中国地质大学 海相储层演化与油气富集机理教育部重点实验室，北京 100083； 2.中国石化东北石油局，长春 130011 摘要根据烃源岩热解地球化学分析成果，应用所测岩样中有机碳(TOC)、吸附烃(S 1)、 干酪根热解烃(S 2)含量及氢指数 IH (S2/有机碳)，对绥滨坳陷滨参 1 井和绥 D1 井下白垩统煤 系地层中的煤系泥岩、碳质泥岩和煤岩从有机质丰度、有机质类型和成熟度三个方面进行 了烃源岩分析评价。这三种岩石样品中各项生油岩指标绝大多数都达到了中-好烃源岩评价 标准。绥滨坳陷下白垩统城子河组和穆棱组为两套具生烃潜力的煤系烃源岩。 关键词绥滨坳陷；有机质丰度；有机质类型；有机质成熟度 Evaluation of the source rocks from the Lower Cretaceous coal measure strata in the Suibin depression of Sanjiang basin, China HOU Zi-ming1， XU Hong-jie2， HU Zhi-fang2， YUAN Gui-lin1， LIU Ming-hui1 1.The Key Laboratory of Marine Reservoir Evolution and Hydrocarbon Accumulation Mechanism of the Ministry of Education, China University of Geosciences, Beijing 100083, China； 2.Northeast Petroleum Bureau of SINOPEC, Changchun 130011, China Abstract: According to the thermal decomposition analysis achievements of the mudstone, carbonaceous mudstone and coal samples gathered from the Lower Cretaceous coal measure strata of Well Bincan 1 and Well Sui D1 in the Suibin depression, this paper analyses the organic matter abundance, type and maturation with TOC, S1 (the absorption hydrocarbon), S2 (the hydrocarbon of kerogen decomposition) and IH (Hydrogen Index, S2/TOC). An absolute majority of samples have the ranges of organic richness from medium level to high level. The result of above analysis indicates that the Lower Cretaceous coal measure strata of Suibin depression, including the Lower Cretaceous Chengzihe Formation and Muleng Formation are the coal measure source rocks with a high hydrocarbon generating potential. - 3 - Key words: Suibin depression; organic matter abundance; organic matter type; maturation of organic matter 鄂尔多斯北部杭锦旗探区上古生界烃源岩评价 薛会 1，张金川 2，徐波 2 ，王毅 1，毛小平 2 1.中国石化石油勘探开发研究院,北京 100083; 2.中国地质大学能源学院, 北京 100083 摘要 鄂尔多斯盆地北部杭锦旗探区上古生界烃源岩问题争议大。通过有机地球化学分 析、盆地模拟等方法手段对研究区上古生界烃源岩展开研究。结果表明，上古生界发育石 炭系、二叠系两套烃源岩，煤层是最好的烃源岩，泥岩为差烃源岩。煤层有机碳的质量分 数最高，平均值为 61.32%；有机质类型好，以 型干酪根为主，属于生气型源岩；有机质 成熟度为 0.8%1.3%，已经进入生气高峰阶段。烃源岩生气强度为(0.11.3)10 9 m3/km2， 具备为研究区天然气成藏提供物质基础的条件。盆地模拟结果表明山西组总生气量大于太 原组，是主要的烃源岩层系。烃源岩从侏罗纪末进入大规模生烃阶段，生烃高峰为早白垩 世。研究区石炭系和二叠系煤层是上古生界天然气成藏的主要气源岩，天然气组分中甲烷 含量变化、天然气侧向运移距离等证据进一步佐证了上述观点，突出了研究区上古生界烃 源岩的原地性特征。 关键词烃源岩；上古生界；杭锦旗；鄂尔多斯盆地 Evaluation of Upper Paleozoic source rocks of the Hangjinqi block in the northern Ordos Basin, China XUE Hui1, ZHANG Jin-chuan2, XU Bo2, WANG Yi1, MAO Xiao-ping2 1.Exploration and Development Research Institute of SINOPEC, Beijing 100083, China; 2.Faculty of Energy Resources, China University of Geosciences, Beijing 100083, China Abstract： The source rock problem on Upper Paleozoic of the Hangjinqi block of the northern Ordos Basin has been hotly disputed. The paper researches the Upper Paleozoic source rocks in the study area by the ways of organic geochemistry and basin model. Carboniferous and Permian formations are two sets of source rocks in the study area. Coalbeds are the best source rocks in the study area, while mudstone is a bad source rock. The coalbed is characterized by 61.32% organic carbon. Type kerogen is the main one with 0.8%1.3% degree of organic metamorphism a gas- generating source rock and reaches the stage of gas-generating climax. The gas-generating intensity of this rock is (0.11.3)109 m3/km2, and this source rock could satisfy the needs of gas accumulation. The total gas-generating content of Shanxi Formation is more than that of Taiyuan Formation, and the former is the main source rock of the study area. The source rock started to generate gas extensively from Late Jurassic, and the gas-generating climax was in Early Cretaceous. The research shows that the coalbed of Carboniferous and Permian is the main source rock of the Upper Paleozoic gas reservoir of the study area. The methane content variety of gas composition and the gas lateral migration distance further verifies the above conclusion and indicates the gas accumulation in place of Upper Paleozoic of the study area. Key words: source rock; Upper Paleozoic; Hangjinqi; northern Ordos Basin - 4 - 鄂尔多斯盆地庆 64 井区延 10 油层的储层三维地质建模 张兵 1，郑荣才 1，张春生 2 1.“油气藏地质及开发工程” 国家重点实验室 (成都理工大学), 成都 610059； 2.长江大学地球科学学院，湖北 荆州 434012 摘要 探讨储层建模技术在鄂尔多斯盆地元城油田庆 64 井区延 10 油层的油藏描述中的 应用。通过取心井的岩心资料，综合运用岩性组合特征、沉积结构、构造特征、韵律特征、 古生物特征等相标志，认为延 10 油层属辫状河流相沉积；分析了辫状河道、心滩、天然堤、 洪泛平原 4 种沉积微相的岩性和电性特征，储层非均质性特征；采用序贯指示模拟技术建 立了研究区沉积微相模型，并以此模型为基础进一步建立了储层参数模型。验证结果表明， 在相控条件下所建模型与实际地质情况符合较好，为油藏数值模拟提供了精确的数据体， 也为准确评价油气田储层性质及井网加密调整、挖掘剩余油潜力提供了依据。 关键词鄂尔多斯盆地；元城油田；延安组；沉积相；储层；非均质性；地质建模 Reservoir sedimentary characteristics and reservoir modeling of Well Qing 64 zone in Yuancheng oilfield, Ordos Basin, China ZHANG Bing1, ZHENG Rong-cai1, ZHANG Chun-sheng2 1.State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610059, China; 2.Earth Science College of Yangtze University, Jingzhou 434023, China Abstract: According to drilling and core analysis testing and synthetically using the various facies characteristics, such as palaeontologies characteristics, deposition textures, structure features, and rhythmic features, the authors points out that the study area belongs to the braided stream facies deposition, and analyses the lithology of four kinds of sedimentary microfacies, such as braided channel, channel bar, natural levee, and flood plain, and the characteristics of cores, the electricity nature of the four microfacies including braid, batture, lateral levee, and flood plain. The sedimentary microfacies model and reservoir model of the study area are built by using lots of indicators. The modeling results show that under the control of facies models, the reservoir model can show the facts better, and the model is fit for developing the remaining oil and provides precise data for reservoir value simulation and reliable evidences for accurately evaluating reservoir features, adjusting infill wells and developing the potential of re-maining oil. Key words： Ordos Basin; Yuancheng oilfield; Yanan Formation; sedimentary facies; reservoir; heterogeneity; geological model building 黄骅坳陷缓坡带沙河街组物源体系分析 袁淑琴 1,2，刘子藏 1，李勇 3，肖敦清 1，蒲秀刚 1 1.大港油田勘探开发研究院，天津 300280; 2.“油气藏地质及开发工程” 国家重点实验室 (成都理工大学),成都 610059; 3.中国科学院地质与地球物理研究所，北京 100029 摘要黄骅坳陷缓坡带位于埕宁隆起和黄骅坳陷的过渡地区，地形坡度较小，显示为埋 藏型低角度缓坡带。根据砾石成分、砂岩成分、重矿物、砂体分散体系和沟-谷体系分析的 - 5 - 研究成果，对缓坡带的次级古物源口及古水系进行分解，将其从西到东分为西部物源口、 中部物源口和东部物源口。它们呈东西向线状分布于埕宁隆起的北侧缓坡带，古水系的轴 向垂直于主要构造线，具有线状物源的特点。此外，在该缓坡带上所发育的 3 条古水系以 短轴的横向水系为特征，水系走向呈近南北向，垂直于主要构造线。研究结果表明，3 个 次级物源口和古水系不仅控制了缓坡带上砾石成分、砂岩成分、重矿物组合在东西方向的 分区和变化，同时多级断阶也控制了砂体分散体系和沟-谷体系在南北方向上的空间展布形 态。 关键词沙河街组;古物源 ;古水系; 缓坡带; 黄骅坳陷 Provenance system of Paleogene Shahejie Formation in the gentle slope (ramp) of the Huanghua depression in Bohai Gulf, China YUAN Shu-qin1,2, LIU Zi-cang1, LI Yong3, XIAO Dun-qing1, PU Xiu-gang1 1.Institute of Exploration and Exploitation, Dagang Oil Field, Tianjin300280, China; 2.Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China; 3.State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610059, China Abstract: The gentle slope (ramp) of the Huanghua depression is a buried slope landform and located on the north slope of the Chengning uplift in the southeast of the Huanghua depression. It can be divided into three tectonic-geomorphologic units from south to north, that is, the outer belt, middle belt and inner belt. By the components of gravel and sandstone, heavy minerals and sandstone bodies dispersion system, the paleo-provenances and paleo-river systems on this slope are established. There are three paleo-provenances and paleo-river systems on the northern gentle slope (ramp) of the Huanghua depression, which are divided into the western, middle and eastern paleo-river system (corresponding to the three paleo-provenances) from west to east. The paleo- river system shows as a branch-river and its strike is vertical to the main tectonic line of the slope. The three paleo-provenances and paleo-river systems control the change of the components of gravel and sandstone, heavy minerals and sandstone bodies dispersion system from west to east on the northern gentle slope (ramp) of the Huanghua depression. Finally the characteristics of the paleo-provenances and paleo-river framework on the ramp of the Huanghua depression are summarized in this paper. Key words: Shahejie Formation; paleo-provenance system; paleo-river system; ramp; Huanghua depression 东濮凹陷地区东营组低熟原油地球化学特征及油源分析 张庆峰 1，沈忠民 1，罗小平 1，常振恒 2 1.“气藏地质及开发工程” 国家重点实验室 (成都理工大学), 成都 610059; 2.中国石化中原油田分公司勘探开发科学研究院,河南 濮阳 457001 摘要对东濮凹陷文留地区东营组原油的族组分、饱和烃色谱特征和生物标志化合物等 资料的分析，结果表明东营组含油砂岩抽提物饱和烃一般在 50%左右、非烃+芳烃为 50%、沥青质一般小于 5%;饱和烃同位素变化范围为 -27.3-28.1，族组分之间的碳同 位素分馏效应小; 饱和烃色谱特征差别较大。这主要是与原油不同深度时生物降解作用的 - 6 - 程度有关。甾萜烷系列中 C27 和 C29 重排甾烷含量低，重排甾烷 /规则甾烷的比值在 0.1 左右， C2920S/(20S+20R)为 0.20.4，三环萜烷、四环萜烷含量低，Ts 大于 Tm，奥利烷与 蜡烷 含量高，反映了高盐度沉积环境下形成的未熟-低熟油特征。油源对比结果显示文留地区西 部沙河街组第三段源岩与东营组油藏具有较好的亲源关系。 关键词文留地区；东营组；低熟油；生物标志化合物 Geochemical characteristics of crude oil and the analysis of oil sources of Dongying Formation in Wenliu area of Dongpu depression, China ZHANG Qing-feng1, SHEN Zhong-min1, LUO Xiao-ping1, CHANG Zhen-heng2 1.State Key Laboratory of Oil and Gas Reservoirs Geology and Exploitation, Chengdu University of Technology, Chengdu 610059, China; 2.Exploration and Production Research Institute of Zhongyuan Oil Field Branch Company, Puyang 457001, China Abstract: This paper analyzes the group component, the saturated hydrocarbon chromatogram and the biomarkers of the crude oil of Paleogene Dongying Formation in the Wenliu area of the Dongpu depression and the results show that the extractable matter, that is, saturated hydrocarbon from the oil sand of Dongying Formation occupies about 50%, and nonhydrocarbon and aromatic hydrocarbon occupies about 50%, and bitumen is usually 5%. The isotope of saturated hydrocarbon varies from -27.3 to -28.1 and the saturated hydrocarbon chromatogram differs greatly, because it haves something to do with the biodegradation degree of the crude oil in different depths. The C27- and the C29- diasteranes of the sterane and terpane have a low content, and the ratio of diasterane and regular-sterane is about 0.1, and C2920S/(20S+20R) is between 0.2 and 0.4. The tricyclic and tetracyclic terpanes are low, and Ts is more than Tm. The oleanane and the -wax alkanes are high reflecting the feature of unmature or low-mature oil under sedimentary environments with a high salinity. The analysis of the oil source expresses the intimate relationship between the mudstone of Member 3 of Paleogene Shahejie Formation in the west of Wenliu and the oil pools of Dongying Formation. Key words: Wenliu; Dongying Formation; low-mature oil; biomarker 大涝坝地区巴什基奇克组隔夹层特征及分布规律 雍自权 1，杨锁 1，钟韬 1，刘庆松 2，张琳羚 3 1.成都理工大学能源学院，成都 610059; 2.中国石油西南油气田分公司勘探事业部，成都 610041; 3.中国石油西南油气田分公司川中油气矿勘探开发研究所,四川 遂宁 629000 摘要塔里木盆地大涝坝地区下白垩统巴什基奇克组岩性剖面存在多套隔夹层，对油气 藏开发具有较大影响。通过沉积学及高分辨率层序地层学分析表明，沉积环境不同，隔夹 层成因、特点和分布规律有较大的差异。浅湖环境形成的 1 型隔夹层厚度最大，连续性最 好；分流间湾环境形成 2 型隔夹层及河道间环境形成的 1 型隔夹层厚度较薄，连续性差； 泛滥平原环境形成的 2 型隔夹层厚度较大，连续性较好。同时,隔夹层的分布规律与其所 处中长期基准面旋回背景密切相关。 1 型隔夹层分布于中长期旋回上升半旋回中下部，且 一般发育于高可容纳空间的短期旋回上升半旋回的上部； 1 型、 2 型隔夹层在中长期旋 - 7 - 回上升半旋回与下降半旋回转换处； 2 型隔夹层位于中长期旋回下降半旋回下部。在巴什 基奇克组剖面上，由下至上隔夹层厚度大致由薄变厚，在中长期旋回的上升半旋回与下降 半旋回转换处隔夹层厚度最大，然后向上隔夹层厚度变薄。 关键词巴什基奇克组；隔夹层;高分辨率层序地层学；分布规律 Features and distribution of insulating layers of Bashijiqike Formation in Dalaoba area, Tarim Basin, China YONG Zi-quan1, YANG Suo1, ZHONG Tao1, LIU Qing-song2, ZHANG Lin-ling3 1.College of Energy Resources, Chengdu University of Technology, 610059, China; 2.Exploration Department of Southwest Company, CNPC, Chengdu 610041, China; 3.Exploration and Development Institute, Chuanzhong Oil and Gas Mines, CNPC, Suining 629000, China Abstract: The insulating layers existing in a lithological profile of the Lower Cretaceous Bashijiqike Formation in Tarim Basin have influence on developing reservoirs. The cause of formation, the features and distribution principle are different with the difference of sedimentary environment according to the theory and analysis of sedimentology and high resolution sequence stratigraphy. Type 1 insulating layers formed in shallow lakes are the best in thickness and continuity. Type 2 and Type 1 respectively formed in branch bays and inter-channels are inferior in thickness and continuity. Type 2 developed in flooding plains is better in thickness and continuity. Also, the distribution principle of insulating layers is consanguineously associated with the middle-long term base level cycles where they are located. Type 1 insulating layers are distributed over the middle-lower section of the ascending semi long-middle term cycle and generally develop in the ascending semi-short term cycle in high accommodation. Type 1 and Type 2 ones develop in the transfer level between the ascending and descending semi-long-or- middle term cycles. Type 2 develops in the lower section of the descending semi-middle-long term cycles. The insulating layers are getting thicker from bottom to up in the profiles of Bashijiqike Formation and are the thickest in the transfer level between the ascending and descending semi-cycles of the middle-long term base level cycles, then get thinner upwards. Key words: Bashijiqike Formation; insulating layers; high resolution sequence; distribution principle 阿克库勒凸起中上奥陶统地层划分及加里东中期第幕古喀斯特 特征 刘存革 1,2，李涛 2，吕海涛 2，丁勇 2 1.中国石油大学盆地与油藏研究中心,北京 102249; 2.中国石化西北油田分公司,乌鲁木齐 830011 摘要随着阿克库勒凸起奥陶系油气勘探向外围拓展，需要重新认识中上奥陶统地层 划分方案和加里东中期第幕古喀斯特作用。通过岩心、FMI 成像测井、自然伽马能谱测 井和古生物资料的对比分析，认为恰尔巴克组 GR 尖峰下面的含泥灰岩段归于上奥陶统， 恰尔巴克组厚度受一间房组上段滩相沉积底形的控制，含泥灰岩段起到填平补齐的作用； FMI 成像测井和自然伽马能谱测井中 KU 和 KThU 两个参数能较好地划分该界线，新方案在 塔北具有借鉴意义。根据该地层划分方案，中上奥陶统在 S109S119S114 井以南地 - 8 - 区为连续沉积，以北的地区存在暴露剥蚀。加里东中期第幕喀斯特对北部的于奇地区影 响较大。 关键词阿克库勒凸起；中上奥陶统；地层划分；古喀斯特 Stratigraphic division of Middle-Upper Ordovician and characteristics of the first episode karstification of Middle Caledonian in Akekule uplift, Xinjiang, China LIU Cun-ge1,2, LI Tao2, LU Hai-tao2, DING Yong2 1.Basin 2.Northwest Oilfield Company of SINOPEC, Urumqi 830011, China Abstract: It is necessary to newly study the stratigraphic division of Middle-Upper Ordovician and the characteristics of the first episode karstification of Middle Caledonian along with the oil and gas exploration in the peripheral regions of the Akekule uplift in Xinjiang. Through comparing and analysing the bore cores, FMI image logging, NGS and conodont fossil, the argillaceous limestone segment under the GR peak of O3q (Upper Ordovician Qiaerbake Formation) belongs to Upper Ordovician, and the thickness of O3q is controlled by the bed form of shoal facies of O2yj (Middle Ordovician Yijianfang Formation). The argillaceous limestone developed in depression areas. FMI and two parameters of NGS, KU and KThU are effective means for this borderline, and this scheme is important for the north of Tarim area. According to this stratigraphic division scheme, the areas to the south of