柴达木盆地东部侏罗系煤系烃源岩生烃潜力评价及地球化学特征 陈中红 , 等。吉林大学学报(地球科学版), 2006 , 36 , 24-28 中图分类号 : P618. 13 文献标识码 :A 对柴达木盆地东部地区侏罗系的 大煤沟剖面、绿草山剖面进行了露头取样,并利用 Rock-Eval 生油岩评价仪、 色谱质谱仪、稳定同位素质谱仪等实验 分析测试技术对样品进行了地球化学特征分析。实验结果表明, 样品有机碳含量变化从 0.07% 到 56.8% ,有机质类型以 Ш 型有机质为主,少数为 Ⅱ型有机质,极少数为Ⅰ型有机质, 灰黑色油页岩及黑色炭质页岩是侏罗系中的优质烃源岩。检测样品 C 29 甾烷异构化参数 C 29 /(+) 、 C 29 20S/(20S+20R) 分布范围分别为 0.25 ~ 0.35、0.06 ~ 0.34,处于未熟-低熟状态。 侏罗系水体环境较浅,多为滨浅湖与沼泽环境,具有煤系烃源岩特点, 局部为水体比较咸化的半深湖 -深湖环境。 关键词:柴达木盆地,侏罗系,烃源岩地球化学,单体烃同位素,生物标志化合物 Sedimentary Environments and Generation Potentials of the Possible Source Rocks in Jurassic System in the Eastern Qaidam Basin, China Chen Zhonghong, et al , Journal of Jilin University(Earth science) 2006 , 36 , 24-28 (China University of Petroleum, Dongying, Shandong, 257061, China) In order to the investigation on the Sedimentary Environments and Generation Potentials of the Possible Source Rocks in the Jurassic System in the Eastern Qaidam Basin, the rock samples selected from the outcrop in the Jurassic System were analyzed including the organic carbon content, the parameters of pyrolysis, biomarker characters of saturated hydrocarbon and stable carbon isotope quality of individual n-alkanes by means of Rock-Eval, GC-MS, GC-MS-MAT and so on. The results showed that: the content of organic carbon ranged from 0.07% to 56.8%, most of the source rocks were type Ш of kerogen, a few of the source rocks were type Ⅱ of kerogen and few was type Ⅰ of kerogen. Gray-black oil shale and black charcoal shale were high quality source rocks in Jurassic system comparatively. The value of the parameters of C 29 20R/20 ( R+S ) and C 29 / ( + ) was 0.06 ~ 0.34 and 0.25 ~ 0.35 , and the organic matter was being in the stage of low maturity. The organic matters were mostly deposited in an environment of lake beach, shallow lake and marsh with oxidation, showing the characters of coal-measure rocks. A few of rock samples revealed a reducing environment of semi-deep lake or deep lake with high salty and water column stratification . Key words: Qaidam Basin, source rocks, sedimentary environment, bio-marker, carbon isotope
湖相烃源岩 R o 异常与无机元素相关性初探 陈中红等。地球化学, 2007 , 36 ( 3 ): 275-278 对东营凹陷牛 38 井主力烃源岩段沙河街三段 R o 值与对应的无机元素含量进行了相关性分析,结果表明: 牛 38 井沙河街组烃源岩中,钾、钠、锌、镍、镁、锂、钡、钴、铷等无机元素含量与 R o 值分布总体呈正相关性,其中钾、钠、铷等强碱金属元素含量与 R o 值正相关性相对较强;钙、锶、锰等金属元素含量与 R o 值总体呈负相关性;铁、硼含量与 R o 值相关性差。 关键词:湖相烃源岩, R o 异常,无机元素,有机质演化,东营凹陷 Correlation between inorganic elements and abnormal vitrinite reflectance in the lacustrine source rocks Chen Zhonghong, GEOCHIMICA , 2007 , 36 ( 3 ): 275-278 ( China University of Petroleum, Dongying , Shandong , 257061) To investigate the correlation between the inorganic elements and the abnormal vitrinite reflectance ( VR o ) , the Member 3 of Shahejie Formation is closely surveyed and analyzed. The results shows: the contents of K, Na, Zn, Ni, Mg, Li, Ba, Co, Rb have positive correlation with the value of VR o in the whole, especially for the strong alkali metals including K, Na and Rb show high positive correlation; the contents of Ca, Sr and Mn have negative correlation with the value of VR o in the whole; the contents of Fe and B have no correlation with the value of VR o for its little variety. Key words: source rocks of lacustrian source rocks, abnormal vitrinite reflectance, inorganic elements, organic matter evolution, Dongying depression.
东营凹陷烃源岩排烃的地质地球化学特征 陈中红等,地球化学, 2005 , 34 ( 1 ): 79-87 摘要:利用地质地球化学信息研究烃源岩的排烃行为是一种重要而有效手段,东营凹陷较为丰富的地质地球化学信息对研究烃源岩的排烃行为具有重要的意义。东营凹陷烃源岩排烃的地质地球化学特征显示其排烃行为存在较强的非均质性:单层泥岩边缘地区排烃效率高,单层泥岩内部排烃效率相对较低,这种现象在厚层泥岩中(大于 30m )表现更为明显,其中通常存在一定的相对滞排区;不同的压实阶段,排烃效率也不相同,快速压实带较缓慢压实带及稳定压实带排烃效率稍高。东营凹陷存在两类超压体系:一类是相对开放性质的,幕式排烃是其重要的排烃方式之一,其排烃效率较常压系统高,排烃效率平均在 50% 左右(常压体系排烃效率一般在 40% 左右);另一类是相对封闭性的,为良好的超压封存箱,其排烃效率较常压系统低,排烃效率平均在 20% 左右,其地质地球化学行为显示一定的滞排特征,排烃行为不明显。研究结果认为 压实不均衡是 东营凹陷 形成沙三中异常高压的主要原因,生烃作用是其形成沙四上超压的主要机制,而沙三下同时具备压实不均衡及生烃作用的双向增压效应。 关键词: 东营凹陷;地质地球化学;烃源岩;压实;排烃;超压 中图分类号: +, 文献标识码: - The Geochemistry Characteristics of hydrocarbon expulsion from source rocks in Dongying depression Chen Zhonghong, et al , GEOCHIMICA , 2005 , 34 ( 1 ): 79-87 (The University of Petroleum , Dongying , Shandong , China ,257061) Abstract: Using geochemistry information to study hydrocarbon-expulsion behavior is an important and effective measure. The abundance of the geochemistry information in Dongying depression has great significance in studying hydrocarbon-expulsion behavior. The geochemistry characteristics indicated that the hydrocarbon-expulsion in Dongying depression had stronger heterogeneity: the efficiency of hydrocarbon-expulsion in the edge of mud is much higher than the inner of the mud; the efficiency of hydrocarbon-expulsion in the edge of mud was much higher than in the inner of the mud, which was more obvious in the thick mud (thicker than 30m ) , and there were stagnant-expulsion zone in the thicker mud commonly; in different compaction phase the efficiency of hydrocarbon-expulsion had discrepancy, the efficiency of hydrocarbon-expulsion in the rapid-compaction phase was higher than in the slow-compaction phase and the stabilized-compaction phase. There were two types of overpressured systems: the open and the closed relatively. The episodic hydrocarbon-expulsion was an important hydrocarbon-expulsion behavior in the open system, and its efficiency was higher comparatively (50% averagely, higher than 40% in normal pressure system); the closed system was overpressure compartment and its efficiency of hydrocarbon expulsion is lower (averagely 20%), and the characteristics of geochemistry demonstrated the stagnant-expulsion. The disequilibrium compaction was considered to be the primary reason for the overpressure formation in the middle part of the Member 3 of Shahejie Formation, hydrocarbon-generation was the key factor for the overpressure in the upper part of the Member 4 of Shahejie Formation, and the overpressure in the lower part of the Member 3 of Shahejie Formation was a result of the both factors. Key words: Dongying depression; geochemistry; source rocks; compaction; hydrocarbon-expulsion ; overpressure
沉积盆地超压体系油气成藏条件及机理 陈中红 , 天然气地球科学, 2003 , 14 ( 2 ): 97-102 摘要 : 近年来的研究及勘探实践表明 , 沉积盆地的超压体系与油气藏特别是深层油气藏的关系非常密切。超压体系油气藏是未来油气勘探的重要方向之一。沉积盆地超压体系具有油气成藏的特定条件和方式。超压抑制和延迟了油气的生成和成熟、改善了深部储层的储集性能、增强了对烃类的封盖作用、扩大了液态窗的范围 , 为深层油气藏的勘探创造了有利条件。超压体系内油气的排放是以幕式进行的并以准封闭体系封存箱的形式构成独立的油气成藏系统。目前 , 在超压与油气生成关系方面仍然有许多有争议的看法 , 和对超压体系内油气成藏机理问题的研究还不够深入。这些争议和问题都亟待解决。 关键词 : 沉积盆地 ; 超压体系 ; 油气成藏 ; 油气生成 ; 幕式排放 ; 封存箱 中图分类号 : TE122 1 1 文献标识码 :A COND ITIONS AND M ECHANISM OF HYDROCARBON ACCUM ULATION IN OVERPRESSURED SYSTEM S IN SED IM ENTARY BASINS CHEN Zhonghong, Natural Gas Geoscience, 2003 , 14 ( 2 ): 97-102 ( U niversity of Petroleum , D ongy ing 257061, Ch ina ) Abstract : The research and practice of exp lo rat ion show that overpressure system s in sedimentary basin shave close relationship with hydrocarbon occurrence and are significant for exploration of deep reservoirs Overpressure inhibit s o r retards the genera ion and maturation of hydrocarbon and imp roves the porosity and permeability of the reservoirs 1 It also strengthens the sealing for hydrocarbon and broadens the range of liquid state window which determines the accumulation and pooling of natural gas 1 So it creates favorable condition s for the exp lo rat ion and development of reservoirs in the deep of basin Overpressure system s formes independent hydrocarbon accumulation system s as a form of compartment from which fluid releases resptitively through a cycle of healed state to fracturing state 1 There are still many problems to resolve, especially fo r the relation ship between overpressu re and hydrocarbon generat ion, which has been argued, and the m echan ism of hydrocarbon accumulat ion in overpressu re system s 1 The issues of hydrocarbon accum u lat ion in overpressure system s w ill be importan t task s for oil o r gas exploration in future. Key words : Sedimentary basin; Overpressure system; Hydrocarbon accumulation; Hydrocarbon genera 2 t ion; Episodic expulsion; Seal compartment
柴达木盆地东部第四系低丰度高效气源岩地球化学特征及成藏机理 陈中红 , 等,地球科学与环境学报, 2007 , 29 ( 1 ): 41-46 摘要 : 对柴达木盆地东部地区第四系鸭湖和盐湖剖面进行了露头取样 , 并利用 Rock 2 Eval 生油岩评价、色谱质谱等实验分析测试技术对样品进行了地球化学特征分析。实验结果表明 , 样品有机碳含量变化不大 , w ( TOC) 为 0. 15 % ~ 0. 75 % , w (S 1 + S 2 ) 为 (0. 24 ~ 2. 5) 10 - 3 。第四系气源岩中的有机质类型多以Ⅲ型有机质为主 , 少数为Ⅱ型 , 极少数为Ⅰ型。有机质主要来源于陆源生物为主的腐殖型和含腐泥腐殖型 , 是典型的低丰度有机质气源岩。 C 29 甾烷异构化参数 C 29 / ( + ) 、 C 29 20S/ (20S + 20R) 分布分别为 0. 34 ~ 0. 38 、 0. 27 ~ 0. 33 ,C 31 升藿烷 22S/ (22S + 22R) 分布为 0. 49 ~ 0. 56 , 显示第四系样品多处于未熟状态。巨厚的气源岩沉积厚度、第四纪寒冷的气候和高盐度的水体环境及有效的生储盖组合是形成第四系大型生物气藏的有利条件。 关键词 : 第四系 ; 气源岩 ; 地球化学 ; 生物标志化合物 ; 柴达木盆地 中图分类号 : P618. 130. 1 ; TE122. 113 文献标志码 : A 文章编号 : 1672 2 6561 (2007) 01 2 0041 2 06 Characteristics and Hydrocarbon - Accumulation Mechanism of Source Rocks with Low Abundance and High Eff iciency in Quaternary Period of Eastern Qaidam Basin CHEN Zhong - hong , et al , Journal of Earth Sciences and Environment, 2007 , 29 ( 1 ): 41-46 ( School of Earth Resource and I nf ormation , China Universi t y of Pet roleum , Dongy ing 257061 , S handong , China) Abstract : In order to investigate the characteristics and hydrocarbon accumulation mechanism of source rocks with low abundance and high efficiency in the Quaternary in the eastern Qaidam basin , the rock samples selected from the outcrop of Quaternary were analyzed , including the organic carbon content , the parameters of pyrolysis and biomarker characters of saturated hydrocarbon by means of Rock - Eval , GC 2 MS and so on. The result s show that the content of organic carbon ranges from 0. 15 % to 0.75 % , and the value of S 1 + S 2 ranges f rom 0.25 mg/ g to 2.5 mg/g, which displays it s limited hydrocarbon 2 generating potential. There were mainly type Ⅲ of kerogen , a few of type Ⅱ of kerogen , and few of type Ⅰ of kerogen. There was predominance of phytane to pristane , and the ratio of pristane to phytane was lowerer than 0. 5. The values of the parameters of C 29 / ( + ) and C 29 20S/ (20S + 20R) were 0. 34 ~ 0. 38 and 0. 27 ~ 0. 33 , and the organic matter was being in the stage of low maturity. The water temperature of the depositional lake was low and it s salinity was high. The unique depositional environment s of this area in the Quaternary are the important conditions for forming the large scale biogenic gas pools. The water environment with a high salinity slowed down the degradation rate of the organic matter . The methane bacteria activity was rest rained in cold environment for a long time and the generation peak of the biogenic gas was delayed. Moreover, the massive Quaternary dark mudstone and f requent developedsandstone in Sanhu area provide abundant gas source and constitute a favorable combination of reservoir. Key words : Quaternary System; gas source rocks ; geochemist ry ; biomarker ; Qaidam basin
济阳坳陷古近系烃源岩结构及排烃的非均一性 陈中红 , 石油勘探与开发, 2003 , 30 ( 6 ): 45-47 摘要 : 济阳坳陷古近系湖相纹层状泥页岩中的有机碳分布非均一性强烈 , 烃源岩结构有大段纯泥岩式、砂岩嵌入式、指状式、泥岩嵌入式、泥包砂式、砂包泥式和砂泥交互式等 , 其压实状态、压力分布状态及排烃特征互不相同。烃源岩压实不均衡导致排烃的非均一性 , 厚层烃源岩中的滞排现象和超压体系的幕式排烃特征是非均一性的两种极端体现。烃源岩排烃的非均一性为分阶段进行排烃模拟提供了新思路。 关键词 : 烃源岩 ; 排烃 ; 非均质性 ; 济阳坳陷 ; 古近系 The structure of source rocks and characteristics of hydrocarbon expulsion CHEN Zhong - hong , Petroleum Exploration and Development, 2003 , 30 ( 6 ): 45-47 Abstract : There are macroscopic and microscopic heterogeneities in the distribution of organic matter in the JiYang Depression and many forms of lithologic structure of the source rocks , showing an inhomogeneity of hydrocarbon expulsion from source rocks. In the formation the state of pressure and characteristics of hydrocarbon expulsion are different from each other. The phenomena of stagnant expulsion and abrupt expulsion suggest that there are two extreme states for hydrocarbon expulsion. The inhomogeneity of hydrocarbon expulsion is guidance for resource evaluation and prediction, which will be able to provide the ways for simulation of hydrocarbon expulsion. Key words: source rock; hydrocarbon expulsion; inhomogeneity; Jiyang Depression ; Palaeogene
芳烃地质色层效应的模拟实验 陈中红 , 等 , 石油实验地质, 2007 , 29 ( 6 ): 612-616 摘要 : 为考察芳烃系列地质色层效应 , 利用未混油或混油源岩样品在低温、加压条件下对块状暗色泥岩及灰质泥岩样品进行排烃模拟实验 , 实验样品来源于渤海湾盆地东营凹陷坨 73 井沙三下段 3 160 m 处泥岩及梁斜 61 井沙四上段 2 432 m 处灰质泥岩 , 两块样品有机碳含量分别为 3. 08 % 和 4. 0 %, 成熟度指标 R o 分别为 0. 42 % 和 0. 45 % 。实验结果显示 , 芳烃系列地质色层效应强弱与芳烃化合物分子量大小呈正相关关系 , 分子量越大 , 运移能力越弱 , 地质色层效应越不明显 ; 排烃过程造成萘等低分子量系列离子流含量整体升高 , 而三芳甾烷等高分子量系列离子流含量整体下降 ; 在系列内部 , 重排后的 1 ,3 ,6 - TMN ( 三甲基萘 ) 较 1 ,2 ,5 - TMN 容易运移 , 甲基取代菲比其对应的无取代基的母体菲难以运移 , 氧芴、硫芴及联苯系列内部各化合物相对含量变化较大 , 该系列化合物有关比值具有作为油气运移指标的潜力。 关键词 : 生物标志化合物 ; 芳烃 ; 地质色层效应 ; 排烃 ; 初次运移 ; 模拟实验 中图分类号 : TE122. 1 文献标识码 :A SIMULATION EXPERIMENT OF THE GEOCHROMATOGRAPHIC EFFECT OF AROMATIC HYDROCARBONS DURING HYDROCARBON EXPULSION Chen Zhonghong , et al , Petroleum Geology and Experiment, 2007 , 29 ( 6 ): 612-616 ( Col lege of Earth Resource and Information , China Universi t y of Pe roleum , Dong y ing , Shandong 257061 , China) Abstract : A simulation experiment has been conducted at a low temperat ure (150 ℃ ) and pressurized condition in order to study t he geochromatographic effect of t he aromatic compounds in the course of the hydrocarbon expulsion from t he black mudstone strata and t he calcilutyte strata. The samples used in the experiment are source rock samples wit h or without oil mixed , which were collected respectively from t he mudstone strata at 3 160 m in t he lower part of t he 3rd Member of Shahejie Formation , Well Tuo - 73 and t he calcilutyte strata at 2 432 m in t he upper part of t he 4t h Member of Shahejie Formation , Well Liangxie - 61 in the Dongying Sag , t he Bohai Bay Basin. The organic carbon content of the two samples are 3.08 % and 4. 0 % , and t he vit rinite reflectance ( R o ) are 0. 42 % and 0.45 % respectively. The result s show t hat the geochromatographic effect is directly related to the molecular weight , since the high - weight molecular hydrocarbon is more difficult to migrate and t he geochromatographic effect is thus more insignificant . The hydrocarbon expulion causes t he ion flow content of the light 2 weight hydrocarbon series , such as naphthalene , increase and t he ion flow content of t he high 2 weight hydrocarbon series, such as triaromtic sterane , decrease in t he whole. While within the hydrocarbon series , the rearranged 1 ,3 ,6 - TMN ( trimethyl naphthalene) can migrate more easily t han the 1 ,2 ,5 - TMN , whereas the dethylphenanthrene migrates more difficultly than the mot her phenenthrene; t he relative content s of the compounds in dibenzofurans , dibenzot hiophenes , and biphenyl series change greatly compared with the other series , and t he related ratios of the compounds within t he above hydrocarbon series are regarded as potential indicator s of hydrocarbon migration. Key words : biomarker ; aromatic hydrocarbon ; geochromatograp hic effect ; hydrocarbon expulsion ; primary migration ; simulation experiment
控制东营凹陷烃源岩排烃的几个关键因素 陈中红 西安石油大学学报, 2007,22( 6 ): 40 - 43 摘要 : 通过东营凹陷钻井取心的观察及不同结构烃源岩地质地球化学特征的比较 , 从内因、外因两个方面对烃源岩排烃的控制因素进行了分析 , 并且就烃源岩岩性结构对排烃及成藏的控制作用进行了初步研究 . 认为内因为有机质类型、丰度及成熟度 , 反映烃源岩中生烃母质的特征 , 东营凹陷大量样品测试结果显示烃源岩的生烃潜量、排烃量与有机质丰度呈良好的线性关系 ; 外部因素包括源岩的结构、源岩内有效的运移通道、压力的分布及外部的构造运动等各种地质作用及内、外部环境 . 研究结果表明 , 东营凹陷主力烃源岩沙四上及沙三下段具有多种岩性结构形式 , 其中沙四上及沙三下下部主要发育纹层状泥页岩 , 油气以远距离侧向运移为主 ; 沙三下上部及沙三中主要发育块状泥岩 , 油气以垂向运移为主 . 不同的排烃方式造成了油气分布的差异 , 沙四型原油分布于凹陷外围 , 沙三型原油分布于凹陷内围 , 混合型原油分布于中间地带 . 关键词 : 东营凹陷 ; 烃源岩 ; 岩性结构 ; 排烃 ; 成藏 Key factors of controlling the hydrocarbon expulsion of the source rock in Dongying Sag Chen Zhonghong Journal of Xian Shiyou University, 2007,22( 6 ): 40 - 43 Abstract : The factors of controlling the hydrocarbon expulsion of the source rock in Dongying Sag are analyzed from internal cause and external cause through the observation of drilling cores and the comparison of the geologic and geochemical characteristics of the source rocks with different structure. The controlling effect of the lithologic structure of the source rocks on the hydrocarbon expulsion of them and the hydrocarbon accumulation is studied. It is held that the internal controlling factors are the typy, abundance and maturation of organic matters ,which reflect the characters of the hydrocarbon generation material in the source rocks. The testing results of a lot of samples in the sag show that there are linear relationships between the potential hydrocarbon generation amount and the hydrocarbon expulsion of the source rock and the abundance of the organic matters. The external controlling factors include the effective migration pathways and the pressure distribution in the source rocks ,some geologic effects such as structure motion and external environment . The research results in thispaper show that ,there are many lithologic structures in the upper fourth member and the lower third member of Shajiehe Formation ,which are chief source rocks in the sag. Lamellar shale is mainly developed in the upper fourth member and the lower part of the lower third member ,and the hydrocarbon migration here is mainly lateral in a long distance.Massive shale is mainly developed in the upper part of the lower third member and the middle third member ,and the hydrocarbon migration here is mainly vertical. The different hydrocarbon expulsion forms cause the difference in hydrocarbon distribution: the hydrocarbon of the fourth member distributes in the periphery of the sag ,the hydrocarbon of the third member distributes in the central part of the sag ,and the mixed hydrocarbon of them distributes in the intermediate zone of the two regions. Key words : Dongying Sag; source rock; lithologic structure; hydrocarbon expulsion ; hydrocarbon accumulation
牛 38 井烃源岩排烃门限的确定 陈中红等 . 天然气工业 , 2005; 25 (11) : 7 ~ 9 对牛 38 井主力烃源岩段沙河街组三段进行了密集测试分析 , 以排烃潜力指数为研究参数 , 对牛 38 井沙三亚段排烃潜力指数剖面分布进行了分析。研究结果表明 , 牛 38 井沙三段开始形成规模排烃的临界饱和量为 300 mg/g, 排烃的临界饱和度为 8. 56% ( 考虑误差 , 其值在 2. 5% ~ 9. 5% 之间 ) , 在达到排烃高峰时 , Ⅰ型、Ⅱ 1 型、Ⅱ 2 型及Ⅲ型有机质的 HEA 值分别为 800 mg/g 、 600 mg/g 、 380 mg/g 、 160 mg/g, 对应的 HES 值分别为 64. 42% 、 29. 86% 、 13. 1% 、 1. 59% , Ⅲ型有机质不能达到排烃门限条件 , 基本为无效有机质。 主题词 烃源岩 排烃门限 临界饱和量 临界饱和度 东营凹陷 DETERM INING THE EXPELL ING HYDROCARBON THRESHOLD OF SOURCE ROCK OF WELL NIU 38 Chen Zhonghong, et al(China Petroleum University, Dongying). NATUR. GAS IND. v. 25, no. 11, pp. 7 - 9, 11 /25 /2005. ( ISSN 1000 - 0976; In Chinese) ABSTRACT: The member 3 of Shahejie Formation, main source rock section ofWellNiu 38 is closely surveyed and analyzed to investigate the expelling hydrocarbon threshold of the source rock. Taking S p /TOC as parameter, the S p /TOC value profile distribution of Sha 3 sub - member of Well Niu 38 is analyzed. The result shows: the critical saturation quantity of grand expelling hydrocarbon of Sha 3 member of Well Niu 38 is 300 mg/g and the critical saturation of expelling hydrocarbon is 8.5% ( considering error, it is 2. 5% - 9. 5% ) ; when reaching the peak of expelling hydrocarbon, the HEA values of organic matter of type Ⅰ , type Ⅱ 1 , type Ⅱ 2 and type Ⅲ respectively are 800 mg/g, 600 mg/g, 380 mg/g and 160mg/g and the corresponding HEA values respectively are 64. 42%, 29. 86%, 13.1% and 1. 59%; the organic matter of type Ⅲ fails to reach the expelling hydrocarbon threshold, almost being invalid one. SUBJECT HEAD INGS: Source rock, Expelling hydrocarbon threshold, Critical saturation quantity, Critical saturation, Dongying sag
烃源岩排烃作用研究现状及展望 陈中红 , 等 详文请见:地球科学进展, 2005 , 20 ( 4 ): 459-466 摘要 : 烃源岩排烃作用的研究在 20 世纪 80 年代以后取得了很大进展 , 主要体现在对烃源岩的排烃机理及控制因素的分析、煤成油排驱的理论研究及勘探突破、幕式排液的探讨及压实压裂双端元排烃模型的建立等方面。在针对研究现状分析的基础上 , 提出了几点研究方向及展望 : 加强对烃源岩剖面排烃特征的高分辨率研究 , 建立压实欠压实压裂三端元排烃模型 , 对存在严重非均质性的烃源岩进行烃源岩排烃分级评价 , 深入探讨排烃与油气成藏的关系。 关 键 词 : 烃源岩 ; 排烃作用 ; 幕式排液 ; 排烃模型 CURRENT SITUATION AND PROSPECT OF THE INVESTIGATION ON HYDROCARBON EXPULSION FROM SOURCE ROCKS CHEN Zhonghong, et al (Un iversity of Petroleum, Shandong Dongying 257061 , China) ADVANCES IN EARTH SCIENCE , 2005 , 20 ( 4 ): 459-466 Abstract: The investigation on hydrocarbon - expulsion from source rocks hasmade big advances in the following aspects: the mechanism and key factors on hydrocarbon expulsion, the research on the oil derived from coals and its exploration break, episodic hydrocarbon - expulsion, and establishment of compaction - fracturing model of hydrocarbon - expulsion. On the basis of current situation on the investigation, the paper brings forward several suggestions and prospects of the research: strengthen the high resolution research on the characteristics of the hydrocarbon - expulsion in the section of source rocks, set up the hydrocarbon - expulsion model including three phases ( compaction, uncompaction and cracking) , evaluate hydrocarbon 2 expulsion on classification of the anisotropic source rocks, and discuss the relation between hydrocarbon - expulsion and hydrocarbon accumulation. Key words: Source rocks; Hydrocarbon - expulsion action; Episodic hydrocarbon expulsion; Model of hydrocarbon - expulsion.
准噶尔盆地陆梁地区断裂-不整合面输导体系与油气运聚 陈中红等 详文请见:地球学报,2006,27(1):63-68 断裂是准噶尔盆地陆梁隆起油气远距离从源(盆1 井西凹陷) 到藏(陆梁油田) 的主要通道,其中基东断裂作为油源断 裂起了关键性的作用。不整合面也是该区油气顺利从源到藏的必要条件,不整合面分布的非均质性是造成该区油气分布差异性的一个重要影响因素。断裂与不整合面形成的断裂-不整合面输导体系是一个高效的输导网络,是油气顺利运聚、成藏的重要条件:二叠系顶面的不整合面与深部断裂组成的输导体系是沟通盆1 井西凹陷二叠系油源向上部侏罗系运移的主要通道,而白垩系底面的区域不整合面与中浅层正断层组成的输导体系是头屯河组和呼图壁河组油气成藏的主要因素。 关键词 准噶尔盆地 断裂 不整合面 输导体系 通道 运聚 Relationship between Passage Systems of Faults-Unconformities and Hydrocarbon Migration : A Case Study of the Lul iang Upl if t in the Junggar Basin CHEN Zhonghong et al ACTA GEOCSIENTICA SINICA,2006,27(1):63-68 Abstract Faults are main passages for long-distance hydrocarbon migration from source rocks to pools in Luliang uplift , and Jidong fault has played a key role in this aspect . The existence of unconformities makes up a prerequisite for hydrocarbon accumulation , and the inhomogeneity of unconformities seems to be an important factor for the differences in hydrocarbon accumulations in this area. The passage systems formed by faults and unconformities are effective pathway networks which are very important for hydrocarbon migration and accumulation. The passage system formed by the unconformity surface of Permian strata and the reverse faults at depth is a key factor for hydrocarbon migration from source rocks to Jurassic strata , and thepassage system formed by the unconformity face at the bottom of Cretaceous strata and the normal faults in J urassic strata is a necessary element for hydrocarbon migration from Jurassic to Cretaceous strata. Key words Junggar basin fault unconformity passage system migration pathway migration and accumulation
阳信洼陷古近系湖盆复合生烃 系统的地球化学特征 陈中红 湖泊科学, 2007 , 19 ( 2 ): 182-189 古近系沙河街组是阳信洼陷最重要的生烃层段。其湖盆充填具阶段性和沉积演化的旋回性,形成了由沙四段、沙三段与沙一段组成的复合生烃系统和不同的地球化学特征。利用 Rock-Eval 生油岩评价仪、 色谱质谱仪等实验 分析技术对不同层系样品进行了地球化学特征分析研究,其中生烃潜力指标包括 有机碳含量( TOC ) 、 残余生烃潜量( S 1 +S 2 )、氢指数 I H 、氯仿沥青 A ;成熟度指标包括热解峰温 T max 、 奇偶优势参数 OEP、 饱和烃轻重比 ( C 21 +C 22 ) / ( C 28 +C 29 ) 及 C 21- /C 22+ 、 镜质体反射率 R o 、莫烷 / 藿烷及甾烷 生物标志物参数 C 29 ( + ) 、 C 29 20S ( 20S+20R );古环境指标包括异构烷烃参数 Pr/Ph 、 Pr /n-C 17 、 Ph /n-C 18 及 伽马蜡烷等 。结果表明, 沙四段为弱还原 - 还原性的半深湖沉积,沉积了一套中等厚度、分布局限的烃源岩( TOC 平均为 1.5% ),其较深位置的烃源岩基本进入成熟阶段,多形成成熟油;沙三段属弱还原 - 还原性的半深湖 - 深湖环境,其烃源岩中有机质丰度较高( TOC 平均为 3.5% ),大部分烃源岩处于未成熟 - 低成熟状态,主要形成未熟油;沙一段为湖水咸化、还原性的半深湖相环境,其烃源岩中有机质丰度高( TOC 平均为 5% 左右),但处于未成熟阶段,主要生成生物气。 Multiplex Hydrocarbon- Generation System in Yangxin Sub-depression and Its Exploration Potential Chen Zhonghong, Journal of Lake Science, 2007 , 19 ( 2 ): 182-189 The shahejie Formation of Paleogene System is the most important hydrocarbon generation interval in Yangxin sub-depression. Multiplex-set hydrocarbon generation series of strata being of different geological-geochemical characteristics were formed because of the staging property of the filling and evolution of Paleogene lake basin and the cyclicity of sedimentary process. The organic carbon content, the parameters of pyrolysis and biomarker characters of saturated hydrocarbon was investigated by using the means of Rock-Eval, GC-MS. The Sha-4 hydrocarbon source rocks formed under the semi-saline to saline water environment, the content of organic matter(TOC) was 1.5% averagely, and most of them was being matured and formed into matured oil; The Sha-3 hydrocarbon source rocks formed under the deep-lake environment with fresh-slight saline water, the content of organic matter(TOC) was 3.5% averagely, and most of them was still immature and formed into immature oil; The Sha-1 immature hydrocarbon source rocks formed under the salt lake-saline water environment, the content of organic matter(TOC) was 5.0% averagely, they are formed into biogas. Key words: Yangxin subdepression, source rock, hydrocarbon generation system, geochemistry
准噶尔盆地陆梁地区复式油气成藏系统初探 陈中红等 地质科学, 41 (3) : 455 464 准噶尔盆地陆梁油田的发现表明盆地腹部具有复式油气成藏系统特征 , 形成多源、多藏和多期次的混源现象。该区可划分为玛湖凹陷环玛湖东斜坡油气成藏子系统、盆 1 井西凹陷石南油田油气成藏子系统及盆 1 井西凹陷陆梁油田油气成藏子系统。前者中 , 烃源灶为玛湖凹陷的风城组 , 成藏时期分别为晚三叠世及中侏罗世末期 , 成藏通道为不整合面及扇状砂体 , 主要形成扇体和古潜山油气藏。盆 1 井西凹陷石南油田油气成藏子系统中 , 烃源灶主要为盆 1 井西凹陷的风城组 , 成藏时期分别为早白垩世及古近纪末期 , 成藏通道主要为断层及不整合面 , 具有阶梯状成藏特征。盆 1 井西凹陷陆梁油田油气成藏子系统中 , 烃源灶主要为盆 1 井西凹陷的乌尔禾组 , 成藏时期分别为中侏罗世末期早白垩世及古近纪末期 , 成藏通 道主要为断层、不整合面及连通砂体 , 具有环状成藏特征。各子系统形成的原油特征也有着较大差异。各成藏子系统的分布基本受盆地的构造形态及烃源灶控制 , 即 : 玛湖凹陷环玛湖东斜坡油气成藏子系统相对比较独立 , 盆 1 井西凹陷陆梁油田油气成藏子系统是盆 1 井西凹陷石南油田油气成藏子系统的延续与发展。断层和不整合面构成的空间输导网络为各子系统的成藏创造了有利条件。 关键词 油气成藏系统 含油气系统 断裂 运移 准噶尔盆地 CHARACTERISTICS OFMULTIPLE HYDROCARBON ACCUMULATION SYSTEM S IN LUL IANG AREA, THE JUNGGAR BAS IN Chen Zhonghong et al CHINESE JOURNAL OF GEOLOGY,41 (3) : 455 464 (in Chinese) The investigations in Luliang area, the Junggar Basin showed the characteristics of the multiple hydrocarbon accumulation systems. Three hydrocarbon accumulation subsystems in the area could be divided, namely, the Mahu Sag East Slop of Circum 2 Mahu Sag subsystem ( the MM subsystem) , the Sag West of Well Pen - 1 to the Shinan Oilfield subsystem ( the PS subsys tem) and the Sag West of Well Pen - 1 to the Luliang Oilfield subsystem ( the PL subsystem).In the MM subsystem, the source rock was the Fengcheng Formation in the Mahu Depression, with petroleum accumulation times being Late Triassic and lateMiddle Jurassic. The pathways were mainly unconformities and fan 2 shaped sand 2 bodies. In the PS subsystem, the source rock was mainly the Fengcheng Formation in the SagWest of Well Peng - 1, with petroleum accumulation times being Early Cretaceous and Late Paleogene. The pathways were mainly faults and unconformities, and the accumulations being ladder 2 shaped. In the PL subsystem, the source rock was mainly theWuerhe Formation in the SagWest of Well Peng - 1, with petroleum accumulation times being late Middle Jurassic - Early Cretaceous and Late Paleogene. The pathways were mainly faults, unconformities and connected sand 2 bodies, and the accumulations being Ring - shaped. The characteristics of crude oil in every subsystem was different from each other.The distribution of above mentioned subsystems was controlled by structural modes and source rocks, so that the MM subsystem was comparatively independent, and the PL subsystem was a continuance and further development of the PS one. The pathway frameworks formed by faults and unconformities created some favorable conditions for hydrocarbon accumulation in the multiple hydrocarbon accumulation systems. KeyWords Hydrocarbon accumulation systems, Petroliferous systems, Faults, Migration, The Junggar Basin
详文请见:中国石油大学学报(自然科学版), 2003 , 27 ( 2 ): 19-22 准噶尔盆地陆梁地区油气运移方向研究 陈中红等 对准噶尔盆地陆梁地区油气运移方向的研究结果表明 , 陆梁油田的油气可能来源于盆 1 井西凹陷和玛湖凹陷。进一步对两者油气可能运移路径的构造形态和运移通道条件进行了分析 , 认为盆 1 井西凹陷的油气运移路径为一继承性的斜坡 , 深部的逆断裂和不整合面、中部的正断层及浅部的大套砂砾岩体可作为油气运移通道 , 其油气运移条件较玛湖凹陷有利。在此基础上 , 利用生物标志化合物 w ( 甾烷 C 29 20 S ) / w ( 20 S + 20 R) 和 w ( C 29 ) /w ( + ) 、烷烃碳同位素 13 C 和原油碳同位素 13 C 、原油物性等指标在油气二次运移过程中发生的运移效应并结合流体势进行分析认为 , 陆梁地区主要的油气运移方向为西南东北向。证实了盆 1 井西凹陷是该区主要的生油凹陷。 关键词 : 准噶尔盆地 ; 陆梁地区 ; 油气运移 ; 二次运移 ; 运移方向 HYDROCARBON MIGRATION DIRECTION INLULIANGSECTIONOF JUNGGAR BASIN CHEN Zhonghong et al Journal of the university of petroleum, 2003 , 27 ( 2 ): 19-22 The contrast of hydrocarbon source and the evolving structure history of Luliang region of Junggar basin indicated that the hydrocarbon mainly came from the western depression of Peng - 1 well and Mahu depression. For Peng - 1 Well , the migration conditions were more favorable than Mahu depression ,and the hydrocarbon migration paths were succeeding slopes. The thrust fault and unconformity surface in the deep formation, the normal fault in the middle and the grit at the bottom of Cretaceous system created the good conditions for hydrocarbon migration. Analysis on the migration effect using some parameters including geochromatography of biomarkers sterane w (C 29 20 S ) / w ( 20 S + 20 R) and w ( C 29 ) / w ( + ) , alkyl hydrocarbon carbon isotope 13 C and crude oil isotope 13 C , and physical property of crude oil also validated that the dist ribution of fluid potent ial field revealed the following conclusion. The secondary migration direction of main hydrocarbon in Luliang section was from southwest to northeast , which shows that Peng - 1 well was the main oil depression , though Mahu depression could provide some hydrocarbon in earlier time. Key words : Junggar basin ; Luliang section ; hydrocarbon migration ; hydrocarbon secondary migration ; migration direction
详文请见: 古地理学报 ,2003.5 ( 1 ): 120 126. 准噶尔盆地陆梁隆起不整合面与油气运聚关系 陈中红等 准噶尔盆地陆梁隆起不整合面十分发育 , 且与油气运聚关系非常密切 : 二叠系、三叠系底不整合面是该区侏罗纪末成藏的主控因素 , 侏罗系底不整合面是深部油气进入该系的有利通道 , 而白垩系底不整合面又是油气顺利从侏罗系进入白垩系的必要条件。研究区的不整合面有褶皱、断褶、超覆、削截、平行 5 种类型 , 各种类型的不整合面对研究区油气运聚作用也有着差异 , 其中断褶不整合面对油气的垂向运移与聚集作用最大 , 是研究区最为典型的油气成藏方式。不整合面的分布具有差异性、继承性、迁移性 , 三性对油气的演化和分配有着影响作用。 RELATION BETWEEN UNCONFORMITY SURFACE AND HYDROCARBON MIGRATION AND ACCUMULATION OF LULIANG UPLIFT IN JUNGGAR BASIN Chen Zhonghong et al JOURNAL OF PALAEOGEOGRAPHY , 2003.5 ( 1 ): 120 126. Luliang uplift in Junggar basin is abundant in unconformity surfaces, which are significant to the hydrocarbon migration and accumulation. The unconformity surfaces in the bottom of Permian system and Triassic system are the key factors for hydrocarbon accumulation in the late period of Jurassic. The unconformity surfaces in the bottom of Jurassic system are favorable to the migration of deep hydrocarbon accumulation in Jurassic system. The unconformity surfaces in the bottom of Creta ceous system are the necessary elements for the migration of hydrocarbon from the Jurassic system to the Cretaceous system. There are five types of unconformity surfaces, which played the different roles in the hydrocarbon migration and accumulation in the research section. The distribution of the unconformity surfaces has three characters of discrepancy, succession , and migration which have great influence on the hydrocarbon distribution and reallocation. Key words Junggar Basin , Luliang uplift , unconformity
详文见:石油学报, 2008 , 29 ( 4 ): 509-515 断陷湖盆超压分布与油气成藏 陈中红 等 渤海湾盆地沾化凹陷古近系的超压在渤南洼陷和五号桩洼陷的沙三段中下亚段大套泥岩和沙四段灰色膏盐岩段中分布 , 但在不同层位超压分布略有差别 ; 常压低压系统发育于上部层段 , 剖面上形成二元结构。从埋深上看 , 2 500 m 以上地层基本为常压或低压 , 2 500 m 以下地层开始出现较明显的压力异常。沾化凹陷超压系统对应主力烃源岩系沙三中、下亚段及沙四上亚段 , 生烃作用是超压的重要成因 , 但超压对生烃的抑制作用不明显。超压体系构成了准封闭的超压封存箱型自源油气成藏动力学系统 , 同时也通过幕式排放为浅层的新近系及古近系的沙三段上亚段东营组常压开放性它源油气成藏动力学系统提供油源及成藏动力。 断裂是超压体系泻压的重要渠道 , 也是油气幕式排放的主要途径 , 与断裂沟通的砂岩体及背斜构造是有利的勘探目标 , 超压泥岩体 周围的透镜状砂体是潜在的目标。 关键词 : 沾化凹陷 ; 断陷湖盆 ; 超压系统 ; 流体流动机制 ; 断裂 ; 油气成藏 Distribution characteristics of overpressure and its controll ing to hydrocarbon accumulation in terrigenous faulted basin CHEN Zhonghong et al ( Facul t y of Geo - Resources and I nf ormation , China Uni veristy of Pe roleum , Dongying 257061 , China) The overpressure in Zhanhua Sag of Bohai Bay Basin was dist ributed in the large series of mud in the middle and lower part s of the third member of Shahejie Formation and gypsum - salt rock in the forth member of Shahejie Formation. The dist ribution of overpressure in the various formations was different . There formed the binary st ructure on the section. The normal - compaction or normal - pressured (low pressured) system was formed at the formation above 2 500 m in depth, and the over - pressured system was formed at the formation below 2 500 m. The over - pressured system corresponds to the main source rocks. Hydrocarbon generation was an important mechanism for genesis of the overpressure system , but the suppression of overpressure on the hydrocarbon generation was not obvious. There are two kinds of fluid dynamics systems in Zhanhua Sag, including the normal - pressured opening fluid-dynamics system and over - pressured fluid - dynamics system , which result in two types of accumulation dynamic mechanisms. One is the self - sourced and sealed dynamic mechanism, and the other is the outward - sourced and opened mechanism. The former provided the oil - gas source and reservoir - forming driver for hydrocarbon accumulation. Fault s and ruptures are important pathways for episodic hydrocarbon - expulsion. So the sandstone - bodies communicated by faults and anticlines are the favorable prospect s for exploration, and the sand lens reservoirs around the over - pressured source rocks are the latent target s for the exploration of subtle t rap reservoirs. Key words : Zhanhua Sag ; faulted basin ; overpressure system; fluid flow mechanism; fault ; hydrocarbon accumulation Chen Zhonghong, Zha Ming. Distribution characteristics of overpressure and its controlling to hydrocarbon accumulation in terrigenous faulted basin. Acta Petrolei Sinica , 2008,29(4):509-515 (in Chinese)
详文请见:J. Lake Sci.(湖泊科学), 2008, 20(6): 705-714 http://www.jlakes.org . 东营凹陷古近系古湖盆演化与水化学场响应 陈中红 , 查 明 , 刘太勋 ( 中国石油大学 ( 华东 ) 地球资源与信息学院 , 东营 257061) 东营凹陷古近系水化学场分布与湖盆演化有着良好的对应关系 , 以 CaCl 2 水型为主的高矿化度地层水是东营凹陷古近系咸化湖盆的典型响应特征 , 矿化度从深到逐渐降低 , 体现出从咸化湖盆向微咸化湖盆及淡水湖盆演化的地球化学响应 . 剖面上可以划分为四种水文环境 : 强开放性水文流畅带 ( 地表到 1.1km) 、弱开放性水文流畅带 (1.1-2.0km) 、水文阻滞过渡带 (2.0-2.5km) 和封闭性水文迟缓带 (2.5km 以下 ), 水化学剖面的分带性与压力分布有着良好的对应关系 . 东营凹陷古近系水化学场经历了早期的沉积与淋滤的交替和新生代的埋藏封闭作用期 , 其中在东营运动时期古近系水化学场表现最为活跃 , 是深层卤水咸化地表浅层淡水从而使浅层出现高矿化度地层水的关键作用期 , 断裂的沟通起了重要作用 , 显示出断陷湖盆的典型特征 . 关键词 : 地层水化学场 ; 矿化度 ; 油气成藏 ; 断陷湖盆 ; 东营凹陷 Response and evolution of formation water chemical fields of the paleogene in Dongying sag CHEN Zhonghong, ZHA Ming LIU Taixun ( College of Georesources and Information , China University of Petroleum , Dongying 257061, P.R.China ) Abstract: The formation of water chemical characteristics in the Paleogene System had good response to the sedimentary conditions and its evolution in Dongying sag. The type of CaCl 2 formation water with high salinity was representative response of the brine lake of the Paleogene System in Dongying sag. The content of total salinity and chloride ion decreased from the deep depth to the lower, which was good response to the evolution of the Dongying sag from salted basin to freshwater basin. According to the vertica1 characteristics of the underground water formation, four hydrological environments can be classified: stronger formation water frequency alternation belt(0-1.1km), feeble formation water frequency alternation belt(1.1-2.0km), formation water alternate blocking belt (2.0-2.5km) and formation water alternate tardy belt (2.5km). In every belt the total salinity, ions and ion composition ratio had different responses, and the belts corresponded to the distribution of formation pressure. The formation water chemical field experienced deposition and leaching in early time and burial in later time. In the period of Dongying Movement the formation water chemical field was active, and salted water from the Member 4 of Shahejie Formation migrated to the lower, and in the course the faults played important roles, which demonstrated the representative characteristics of faulted basin. Keywords: Formation water chemical field; oil accumulation; salinity; faulted basin; Dongying sag Chen Zhonghong, et al. Response and evolution of formation water chemical fields of the paleogene in Dongying sag. Journal of Lake Sciences . 2008, 20(6): 705-714 (in Chinese)