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| 1 | 塔里木盆地奥陶系碳酸盐岩颗粒滩沉积组合及展布特征显示文摘本文综合露头、钻/测井、地震以及薄片等资料的研究,开展了塔里木盆地奥陶系碳酸盐岩颗粒滩沉积特征的研究。本次研究首次厘定了颗粒滩的划分标准,总结了塔里木盆地奥陶系发育藻粒滩、内碎屑滩、鲕粒滩和生物碎屑滩四类颗粒滩;明确了四类颗粒滩的微观和宏观沉积特征:藻粒滩由藻粒、球粒和藻团块构成,与结晶云岩互层沉积;内碎屑的含量和形态揭示了内碎屑滩的部位和沉积区的能量,内碎屑滩自鹰山组开始大规模发育;鲕粒滩主体区其他颗粒类型不发育,鲕粒滩主要分布在塔中和玉北地区的台缘带;生物碎屑滩由生物骨架碎屑和生物颗粒构成,与生物礁复合共生,集中在台缘带及台缘内侧分布,一间房组开始大规模发育。颗粒滩发育段对应低GR值,主体部位GR曲线呈箱型、漏斗型或钟型,侧缘部位呈指状或尖峰状,台缘带颗粒滩向台内迁移呈退积反射特征。在此基础上,建立了塔里木盆地碳酸盐岩颗粒滩的四种沉积组合样式:藻礁滩互层式、厚层滩加积式、薄层滩退积式和生物礁滩复合式。其中,藻礁滩互层式和礁滩复合式颗粒滩分布受相带影响,具有局限性,易于形成有效油气藏,在塔中地区奥陶系已得到证实。厚层滩加积式和薄层滩退积式颗粒滩在鹰山组分布广泛,结合颗粒滩的沉积展布规律及储层成因分析,得出鹰山组颗粒滩储层具有区域优势分布特征。 | 胡晓兰 樊太亮 高志前 李博 陈晓智 李昭 孟祥杰 李智峰 | 2014 | 沉积学报2014，32，3： | 26 |
| 2 | 四川盆地及其周缘地区寒武系洗象池群颗粒滩特征及分布显示文摘通过对野外露头剖面、钻井以及1︰200000区域地质调查等资料的综合研究,识别出四川盆地及其周缘地区寒武系洗象池群颗粒滩的岩石类型包括颗粒云岩、颗粒灰岩、细—中晶白云岩,颗粒类型主要为砂屑,次为鲕粒、砾屑以及少量生屑。发育潟湖—台内滩—潟湖、潟湖—台内滩—台坪、潮坪—潮缘滩—潮坪这3种向上变粗的沉积序列。单个旋回中的颗粒滩的厚度一般小于2.5m,垂向上多表现为频繁叠置的小规模薄型滩体,且横向规模小、可对比性差。平面上,颗粒滩主要分布在古隆起区和水下相对高地,整体为东北向分布。海平面升降和沉积能量的高低控制着颗粒滩发育规模,而构造条件决定了颗粒滩的横向连续性和平面分布。 | 赵爱卫 谭秀成 李凌 罗冰 洪海涛 刘吉伟 王勇 段卓 | 2015 | 古地理学报2015，17，1： | 21 |
| 3 | 轮古地区古岩溶成像测井响应特征及其对岩溶发育的指示作用显示文摘塔里木盆地轮古地区奥陶系碳酸盐岩储层受多期构造运动及古岩溶作用的叠加改造,该地区古岩溶作用形成的溶洞、裂缝等次生孔隙是主要的油气储集空间。因此古岩溶发育研究是碳酸盐储层评价极为重要的研究内容。文章在对轮古地区奥陶系碳酸盐岩储层大量成像测井资料处理基础上,主要通过对溶蚀裂缝、溶洞的成像测井响应特征进行分析,总结古岩溶标志的成像测井响应规律。高导缝在成像测井图像上表现为褐黑色正弦曲线,溶蚀缝表现为裂缝图像边缘不平直,未充填溶洞在图像上表现为暗色的团块分布,对于全充填洞,可在成像测井图中见到层理等沉积现象。溶蚀程度的差异可根据成像测井资料上解释的裂缝及溶洞中角砾的多寡来度量。轮古西井区,其大溶洞中角砾已溶蚀掉,部分溶洞充填泥砂,表明溶蚀程度很高;轮古中部各井溶洞中的角砾还比较大,单产状裂缝溶洞的规模比轮古西井区小,溶洞溶蚀程度较弱;轮古东井区未见单产状小溶洞,仅见大溶洞的雏形或只有交叉缝和溶蚀裂缝。对区域大量成像测井识别的洞穴数据统计结果表明轮古地区奥陶系洞穴型岩溶储层的分布主要受表层岩溶作用控制。 | 傅海成 邹长春 肖承文 祁兴中 王儒安 赵丹颖 孙健 | 2015 | 中国岩溶2015，34，2： | 7 |
| 4 | Geochemical Characteristics and Tectonic Significance of Triassic Granite from Taer Region, the Northern Margin of West Kunlun显示文摘Late Hercynian-early Indosinian (Triassic) granite is widely distributed around the Taer region of the northern margin of West Kunlun. The rock mass is mainly composed of calc-alkaline porphyroid biotite adamellite and characterized by SiO2-rich, high-Ca, moderate-alkaline, and strongly peraluminous attributes, and relatively low ΣREE with LREE enrichment and a moderate Eu anomaly. As shown in the trace element spider web diagram, distinct peaks appear for Th, La, Nd, and Zr and clearly low values appear for Ba, Nb, Sr, P, and Ti. Further, compared with the primitive mantle, Rb/Sr and Rb/Ba are considerably higher and Nd/Th and Nb/Ta are relative low, all falling into the scope of the crust-origin rocks, indicating the characteristics of the crust-origin S-type granite. The rock mass's zircon U-Pb isotopic age is determined to be 235.7 ± 3.9 Ma. On the basis of the age data, spatio-temporal location, lithology, and geochemistry of the rock mass, we conclude that the formation of the rock mass is closely related to the strong compressional orogenic movement (240 Ma) of the Tianshuihai terrane and the South Kunlun terrane. The rock mass is the product of the collision orogenic movement. However, distinct differences are observed between the studied rock mass and the synorogenic Bulunkou rock mass, which may be caused by the different collision strength and different positions with respect to the collision zone. | HUANG Jianguo YANG Ruidong YANG Jian CUI Chunlong | 2013 | Acta Geologica Sinica(English Edition)2013，87，2： | 6 |
| 5 | Influence of meandering river sandstone architecture on waterflooding mechanisms: a case study of the M-I layer in the Kumkol Oilfield, Kazakhstan显示文摘In order to explore the influence of sandstone architecture on waterflooding mechanisms using the architecture method, and taking as an example the M-I layer of the Kumkol oilfield in the South Turgay Basin, Kazakhstan, we portrayed the architecture features of different types of sandstones and quantitatively characterized heterogeneities in a single sand body in meandering river facies. Based on the waterflooding characteristics of point bar sand and overbank sand according to waterflooded interpretation results in 367 wells and numerical simulation results of well groups, we finally analyzed the remaining oil potential of the meandering river sandstone and pointed out its development directions at the high water cut stage. The result shows that because lateral accretion shale beds are developed inside single sand bodies, the point bar sand is a semi-connected body. The overbank sand is thin sandstone with poor connectivity, small area and fast lateral changes. The heterogeneity of the overbank sand is stronger than the point bar sand. The sandstone architectures control the waterflooding characteristics. In meandering river sandstones, the bottom of the point bar sand is strongly waterflooded, while the top of the point bar sand and most of the overbank sand are only weakly waterflooded or unflooded. The thickness percentage of unflooded zone and weakly waterflooded zone in point bar sand is 40%, and the remaining oil in its top part is the main direction for future development. | Wang Jincai Zhao Lun Zhang Xiangzhong Tian Zhongyuan Chen Xi He Ling | 2014 | Petroleum Science2014，11，1： | 5 |
| 6 | 台缘礁分类、特征、发育模式及与可容空间耦合关系——以塔里木盆地中东部地区良里塔格组良二段为例显示文摘塔里木盆地塔中东部地区晚奥陶世良里塔格组发育台缘礁。通过单井镜下薄片观察及礁相对比剖面发现,纵向上发育2~4个礁生长旋回,单个旋回厚度为30~80m,横向可对比性较好。根据可容空间变化与礁生长关系,将礁划分为退积礁、进积礁、并进礁3种类型,即:①垂向可容空间增加,即相对海平面上升速度大于礁生长速度时,形成退积礁;②垂向可容空间减少,即相对海平面上升速度小于礁生长速度时,形成进积礁;③垂向可容空间不变,即相对海平面与礁生长动态平衡,形成并进礁。并分别建立了3种礁的识别标志及与可容空间的耦合关系和成因模式:①退积礁,测井曲线表现为自然伽马(GR)低值,深双侧向测井均表现为近平直状,造礁生物以管孔藻,块状、枝状和板状珊瑚及苔藓虫为主,多发育于高水位沉积早期,台地向陆地迁移时期;②进积礁,测井曲线表现为自然伽马(GR)中—低值,深双侧向测井均表现为低值,造礁生物以海百合、浮游介形虫、隐藻等为主,多发育于高水位沉积晚期,海平面下降或静止时,台地边缘向盆地方向迁移,礁体层位逐渐抬高;③并进礁,测井曲线上表现为自然伽马(GR)低值,深浅双侧向测井表现为中高值;造礁生物以腹足类、棘皮类等及藻类为主,并进礁多发育于高水位沉积中期,台地边缘向两侧发生迁移,台缘宽度变大。 | 石平舟 王振宇 东玉 范坤宇 | 2019 | 天然气地球科学2019，30，5： | 4 |
| 7 | The Origin of Paleokarst in the Huanglong Formation of the Eastern Sichuan Basin:Evidence from δ^(13)C, δ^(18)O and ^(87)Sr/^(86)Sr显示文摘Karst rocks from the Huanglong Formation exposed at the margin of the Eastern Sichuan Basin can be divided into four types:slightly corroded, moderately corroded porous, intensely corroded brecciated and intensely corroded and replaced secondary calcic karstic rocks. The carbon, oxygen and strontium isotope compositions of the various karst rocks are analyzed systematically and compared to rocks without karst corrosion. The results indicate that(1) the Huanglong Formation in the eastern Sichuan Basin was a restricted bay supplied and controlled by freshwater in which mudmicrite and mud-dolomicrite exhibit low δ13C and δ18O values and high 87Sr/86 Sr ratios;(2) all types of karstic rocks in the paleokarst reservoirs of the Huanglong Formation in the research area are affected by atmospheric freshwater with the δ13C and δ18O values and 87Sr/86 Sr ratios in the original formation approaching those of atmospheric freshwater, which reflects ancient hydrological conditions, fluid properties, isotopic source and the fractionation effect;(3) the intensely corroded and replaced secondary limestone is affected by a variety of diagenetic fluids, often reflected by δ13C and δ18O values, while the 87Sr/86 Sr ratios exhibit the strong degree of the corrosion;(4) after comparing the 87Sr/86 Sr ratios of each type of karst rock, the diagenetic fluids are determined to be mainly atmospheric freshwater, and depending on the strength of corrosion, and the low 87Sr/86 Sr ratio fluids in the layer will participate in the karst process. The carbon, oxygen, and strontium isotopes of different karstic reservoirs can provide meaningful geochemical information for forecasting and evaluating the development and distribution rules of the Huanglong Formation at the margin of the eastern Sichuan Basin in time and space. | CHEN Haoru ZHENG Rongcai WEN Huaguo LI Shilin LI Shuang ZHOU Gang WEN Longbin | 2014 | Acta Geologica Sinica(English Edition)2014，88，6： | 0 |
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