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Hydrocarbon accumulation model of the Cretaceous in southern china

Science china Earth Sciences 2009年第S1期52卷 77-87页

作者： CHEN Bo1,ZHANG ChangMin1,LUO MingXia2,LEI QingLiang3,HAN DingKun3 & ZHOU XiaoJun4 1 Geoscience College of Yangtze University,Jingzhou 434023,china 2 Exploration and Development institute of Northwest Oilfield Branch,sinopec,Urumqi 830011,china 3 sinopec central-south company,changsha 410117,china 4 The Fifth Oil Production Plant of Huabei Oilfield company,Xinji 052360,china 1. Geoscience College of Yangtze University Jingzhou 434023 China 2. Exploration and Development institute of Northwest Oilfield Branch SINOPEC Urumqi 830011 China 3. sinopec central-south company Changsha 410117 China 4. The Fifth Oil Production Plant of Huabei Oilfield company Xinji 052360 China

The Cretaceous in southern china is mainly a set of red and mauve clastic rock,with evaporation layers. For lack of source rock,it has been paid little attention to in the exploration process. With the development of research on hydrocarbon exploration,the masses of Cretaceous reservoirs and shows have been found in recent years. This means that the Cretaceous has great exploration potential. According to the research,authors find that the high-quality reservoir and efficient cap rocks develop in the Cretaceous. At the same time,the Cretaceous and underlying Paleozoic-Early Mesozoic marine strata and overlying Cenozoic nonmarine strata constitute a superimposed basin. Moreover,high-quality source rocks developed in the above-mentioned two sets of strata. In the south,especially in the middle and lower Yangtze region since the Himalayan strong rift was associated with a large number of faults,These faults connect the Cretaceous reservoir and its overlying and underlying source rocks,forming the fault-based and unconformity-based discontinuous source-reservoir-cap accumulation assemblages. Because the Cretaceous has the abundant oil and gas from Paleogene source rocks or Mesozoic–Paleozoic source rocks with secondary hydrocarbon generation ability,three types of reservoirs develop in the Cretaceous:"new-generating and old-reservoiring" reservoirs,"old-generating andnew-reservoiring" reservoirs,and few "self-generating andself-reservoiring" reservoirs. The hydrocarbon enrichment depends on two key factors. Firstly,Cretaceous reservoirs are near to the source kitchens,so its oil and gas source is ample. Secondly,the fault system is well developed,which provides the necessary conducting systems for hydrocarbon accumulation.

关键词： the Cretaceous in southern china superimposed basin new-generating and old-reservoiring reservoirs old-generating and newreservoiring reservoirs secondary hydrocarbon generation hydrocarbon conducting systems

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Estimation of the amount of erosion at unconformities in the last stage of the Eocene Sanduo period in the Subei Basin,china

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Petroleum Science 2009年第4期6卷 383-388页

作者： Chen Liqiong Jiangsu Oilfield company,sinopec,Jiangsu 225009,china Jiangsu Oilfield company SINOPEC Jiangsu China

Strata erosion is a widespread phenomenon in sedimentary basins. The generation, migration, and accumulation of hydrocarbon is influenced by the scale of erosion, so estimating the amount of erosion is essential in the analysis of oil and gas bearing basins. According to the geological features in the Subei Basin and the actual data, using the integrated method, we estimated the level of erosion at the unconformities caused by the Sanduo event. By using the mudstone interval transit time method and the vitrinite reflectance method on data from typical wells, it can be concluded that the Gaoyou, Jinhu, and Hongze depressions suffered strong strata erosion from the late Eocene to Oligocene, and the total strata erosion thickness was 300–1,100 m. Different tectonic units in the same depression have extremely uneven erosion intensity: the low convex regions have the maximum erosion thickness, amounting to 800–1,100 m; the slope regions have an erosion thickness of generally 600–800 m; the erosion thickness of the slope-hollow transition zone is 300–500 m. For the whole basin, we used the strata thickness trend analysis method combined with the interval transit time and vitrinite reflectance methods to estimate the erosion thickness in the Sanduo period. The results show that the most severe erosion of the Sanduo event in the Subei Basin is between 1,000 m to 1,200 m, mainly located in depressions around the Jianhu Uplift; the deep hollow area has the least erosion, generally about 300–600 m, and the erosion in the slope area is about 600–900 m. Compared with the northern part, the southern part has relatively little erosion. It is also proved that the Sanduo movement has heterogeneous intensity, and the western region has greater intensity than the eastern region.

关键词： Unconformity estimation of erosion mudstone interval transit time method vitrinite reflectance method Subei Basin

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Carbon and hydrogen isotopic characteristics of natural gases from the Luliang and Baoshan basins in Yunnan Province, china

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Science china Earth Sciences 2006年第9期49卷 938-946页

作者： XU Yongchang1, LIU Wenhui2, SHEN Ping1, WANG Wanchun1, WANG Xiaofeng1, Tenger1, YAN Yaomin3 & LIU Ruobin3 1. Lanzhou Center of Oil & Gas Resources, Institute of Geology and Geophsics, Chinese Academy of Sciences, Lanzhou 730000, china 2. Research Institute of Petroleum Exploration and Production, sinopec, Beijing 100083, china 3. south Branch of Petroleum Exploration and Production company, sinopec, Kuming 650000, china 1. Lanzhou Center of Oil & Gas Resources Institute of Geology and Geophsics Chinese Academy of Sciences Lanzhou 730000 China 2. Research Institute of Petroleum Exploration and Production SINOPEC Beijing 100083 China 3. south Branch of Petroleum Exploration and Production company SINOPEC Kuming 650000 China

The Luliang and Baoshan basins of Yunnan Province are two small-sizedcontinental oil/gas-bearing sedimentary basins, which were developed at the bases of theCarboniferous and Devonian systems during the Late Tertiary, covering an area of 325 km^2 and 254km^2, respectively. Since the 1990s, there have been discovered small-sized natural gas pools inthese two basins. The natural gases are composed mainly of hydrocarbon gases, with nonhydrocarbonsaccounting for less than 2%. Of the hydrocarbon gases, methane accounts for more than 99%, and thecomponents above C_2 account for less than 0.2%. On the basis of previous studies of geologicalbackground, the composition of natural gases and their carbon isotopic composition, it has beendefined that these two gas pools are of bacterial origin. In this work we have comprehensivelymeasured the carbon and hydrogen isotopic composition of natural gases from these two basins andhave gone into the details of the mechanism of gas generation. The δ^(13)C_1 values of naturalgases from the Luliang Basin are within the range of -72.1 per thousand - -73.3 per thousand, andthe δD_(CH_4) values, -242 per thousand - -234 per thousand, indicating that the bacterial gasgeneration is dominated by the way of CO_2 reduction. It has been evidenced that undercontinental-facies fresh water conditions there did occur the CO_2 reduction as a process ofbacterial gas generation. The δ^(13)C_1 values of natural gases from the Baoshan Basin are withinthe range of - 62.5 per thousand - -63.5 per thousand, and the δD_(CH_4) values, -252 per thousand- -260 per thousand. These isotopic characteristics are fallen into transitional phase of acetatefermentation and CO_2 reduction as defined by Whiticar et al. (1986). An important discovery in theLuliang Basin is the carbon isotopic composition of ethane of purely biogenetic origin, i.e., itsδ^(13)C_2 values are within the range of - 61.2 per thousand - - 66.0 per thousand. These carbonisotopic values have been r

关键词： bacterial gas, carbon and hydrogen isotope, CO2 reduction, acetate fermentation.

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Fast synthesis of monodisperse TiO_2 submicrospheres via a modified sol-gel approach

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Rare Metals 2008年第1期27卷 1-4页

作者： WANG Hong＇en LI Bo YAN Zaoxuea LU Zhouguang CHENG Ruijing QIAN Donga College of Chemistry and Chemical Engineering Central South University Changsha 410083 China sinopec Changling Catalyst Division Yueyang 414012 China State Key Laborotory of Powder Metallurgy Central South University Changsho 410083China

Monodisperse titania glycolate submicrospheres were synthesized by a modified sol-gel route, in which ultrasonic treatment was introduced to improve the reaction efficiency. The as-prepared products were characterized by means of Fourier transform infrared spectrum （FT-IR）, transmission electron microscopy （TEM）, powder X-ray diffraction （XRD）, and scanning electron microscopy （SEM）. The results indicate that the as-prepared products are titania glycolate submicrospheres with diameters of 230-330 nm. The average particle diameter is estimated to be about 280 nm. Ultrasonic treatment has an important influence on the morphology of the produced titania glycolates. After calcination at 450°C for 2 h, these titania glycolates were completely converted into anatase TiO2. The morphology of TiO2 particles was well reserved during the calcination process except for a reduction of 18% in the average particle size.

关键词： TiO2 submicrosphere sol-gel monodisperse ultrasonic treatment

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Multi-level decollement zones and detachment deformation of Longmenshan thrust belt,Sichuan Basin,southwest china

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Science china Earth Sciences 2008年第S2期51卷 32-43页

作者： TANG LiangJie1,2,3,YANG KeMing4,JIN WenZheng1,2,3,L ZhiZhou4 & YU YiXin1,2,3 1 State Key Laboratory of Petroleum Resource and Prospecting,china University of Petroleum,Beijing 102249,china 2 Key Laboratory for Hydrocarbon Accumulation Mechanism,china University of Petroleum,Ministry of Education,Beijing 102249,china 3 Basin and Reservoir Research Center,china University of Petroleum,Beijing 102249,china 4 southwest Division company,sinopec,Chengdu 610081,china 1. State Key Laboratory of Petroleum Resource and Prospecting China University of Petroleum Beijing 102249 China 2. Key Laboratory for Hydrocarbon Accumulation Mechanism China University of Petroleum Ministry of Education Beijing 102249 China 3. Basin and Reservoir Research Center China University of Petroleum Beijing 102249 China 4. southwest Division company SINOPEC Chengdu 610081 China

As is well known that many decollement layers were developed in the Longmenshan thrust belt,Si-chuan Basin,china. Through field investigation,explanation of seismic profiles and analysis of the balanced sections,we can divide the decollement zones into 3 categories: (1) the deep level decolle-ment zones,including the crust-mantle decollement layer,intracrustal decollement layer,and presinian basal decollement layer. The main structural styles of their deformation are the crust-mantle decoup-ling detachment deformation,the basal ductile shear deformation,etc.; (2) the middle level decollement zones,including the Cambrian-Ordovician decollement layer,the Silurian decollement layer,etc.,the main structural styles of their deformation are the isopachous fold,the angular fold,the saddle struc-ture,and the combination styles of them; and (3) the shallow level decollement zones,including the Xujiahe Formation decollement layer of Upper Triassic and the Jurassic decollement layers,the main structural styles of their deformation are the thrust-nappe tectonic,the pop-up,the triangle zone ,the duplex,etc. Multi-level decollement zones not only made the Longmenshan thrust belt develop many different deformation styles from deep place to shallow place,but also made some local areas have the superimposition of the tectonic deformation apparently. This study indicates that the multi-level de-collement zones have a very important effect on the shaping and evolution of the Longmenshan thrust belt.

关键词： decollement layer structural styles multi-level decollement zones Longmenshan thrust belt

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元坝地区深层礁滩储层多尺度地震识别技术

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天然气工业 2011年第10期31卷 27-31,115-116页

作者：蒲勇中国石化勘探南方分公司

川东北地区礁滩储层埋深大,空间展布复杂多变,因针对深层复杂礁滩储层的地震预测技术还不够完善,一直制约着该区的勘探发展。为此,以川东北元坝地区长兴组礁滩储层为研究对象,对礁滩储层预测技术进行了探索和总结,形成一套以礁滩储层数... 详细信息

川东北地区礁滩储层埋深大,空间展布复杂多变,因针对深层复杂礁滩储层的地震预测技术还不够完善,一直制约着该区的勘探发展。为此,以川东北元坝地区长兴组礁滩储层为研究对象,对礁滩储层预测技术进行了探索和总结,形成一套以礁滩储层数值模拟技术、小波多尺度边缘检测技术、基于波形复杂程度的储层检测技术、礁滩复合体空间分布预测技术、地震属性分析技术、地震相分析及沉积相解释技术、低频伴影技术以及"相控法"精细储层描述技术等为核心的多尺度地震识别方法,并在元坝地区获得了良好的应用效果,落实了元坝地区长兴组台缘礁滩复合体、礁后浅滩、礁间滩、台内滩4种类型7个勘探目标,已完钻的井均钻遇白云岩储层,并均获得工业气流,表明该技术方法具有推广应用的价值。

关键词：四川盆地东北部元坝地区碳酸盐岩生物礁滩储集层晚二叠世地震勘探预测

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NEW BREAKTHROUGH OF HEAVY OIL UPGRADING TECHNOLOGY——INTEGRATION PROCESSES OF VRFCC/RMC FOR PRODUCTION OF HIGH VALUE PRODUCTS AND STEAM CRACKING FEED

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石油学报（石油加工） 2000年第4期16卷 91-93页

作者： LI Da dong 1,ZHONG Xiao xiang 1,LI Zhi qiang 2,CAO Xiang hong 3 (1 RIPP sinopec,Beijing 100083,china 2 BDI sinopec,Beijing 100724,china 3 sinopec,Beijing 100029,china) RIPP sinopec China 北京 100083 BDI sinopec 北京 100724 sinopec 北京 100029

An integration process of vacuum residue FCC(VRFCC)and moderate pressure hydro cracking(RMC),developed by RIPP and BDI,opens a new route for maximizing production of both high value products and the feed for steam cracking(SC).VRFCC technology has been put on stream at Yanshan Petrochemical Co (YPC)since November 1998.A 79 2%(mass percent)high value product(LPG+GSL+LCO)was surprisingly made on the test run from a resid feedstock of 85 0%(mass percent)Daqing crude VR *** facility coking was found during the *** is a renovating moderate pressure hydrocracking technology,the end point of the heavy VGO feed is as high as 534 ℃,and the RMC catalyst performance shows high hydrodenitrogenation activity and high ring opening *** process highlights the flexibility of product slates——maximum premium mid distillates yield(38 0%(mass percent))and/or maximum hydro unconverted bottoms(Hydro BTMs)yield(50%～70%(mass percent)).Over 30%(mass percent)ethylene was produced from SC process based on Hydro BTMs feed. The application of VRFCC/RMC integration at YPC not only covers the shortages of SC feed for 660 kt/a ethylene production capacity,but also increases the total yield of premium fuel products.

关键词：高附加值产品石油产品炼油技术

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sinopec and CNPC Join Hands to Keep Domestic Oil Market Stable

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china Oil & Gas 2003年第2期10卷 46-47页

作者： Yang XiangfengJiangsu Oilfield company,sinopec Jiangsu Oilfield company Sinopec

sinopec and CNPC have recently issued an urgent circular on the joint efforts to stabilize the country's oil products market. The State Development and Reform Committee has lowered the retail median prices of gasoline... 详细信息

关键词：中国石油化工总公司中国石油天然气总公司中国石油市场汽油柴油机

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Formation mechanism of carbonate cemented zones adjacent to the top overpressured surface in the central Junggar Basin,NW china

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Science china Earth Sciences 2010年第4期53卷 529-540页

作者： YANG Zhi1,2,ZOU CaiNeng1,3,HE Sheng2,LI QiYan1,HE ZhiLiang3,WU HengZhi5,CAO Feng1,MENG XianLong4,WANG FuRong2 & XIAO Qilin21 State Key Laboratory of EOR,Research Institute of Petroleum Exploration & Development,Petrochina,Beijing 100083,china 2 Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education,china University of Geosciences,Wuhan 430074,china 3 State Key Laboratory of EOR,Research Institute of Petroleum Exploration & Development,Petrochina,Beijing 100083,china 4 Research Institute of Petroleum Exploration and Production,sinopec,Beijing 100083,china 5 southwest Branch company,sinopec,Chengdu 610051,china 1. State Key Laboratory of EOR Research Institute of Petroleum Exploration & Development PetroChina Beijing 100083 China2. Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education China University of Geosciences Wuhan 430074 China3. State Key Laboratory of EOR Research Institute of Petroleum Exploration & Development Petrochina Beijing 100083 China5. Southwest Branch Company SINOPEC Chengdu 610051 China4. Research Institute of Petroleum Exploration and Production SINOPEC Beijing 100083 China

Carbonate cemented zones are normally adjacent to the top overpressured surface in the central Junggar Basin,NW *** carbon and oxygen isotopic compositions and petrological investigations of carbonate cements in the carbonate cemented zones indicate that:(1) carbonate cements are composed dominantly of ferrocalcite,ferroan dolomite,and ankerite;(2) carbonate cements are formed under a high temperature circumstance in the subsurface,and organic fluid migration has an important effect on the formation of them;and(3) carbon and oxygen ions in the carbonate cements migrate from the underlying overpressured *** suggests that the occurrence of carbonate cemented zones in this region results from multiple phases of organic fluid expulsion out of the overpressure compartment through geological *** study provides a plausible mechanism of the formation of carbonate cemented zones adjacent to the top overpressured surface in the clastic sedimentary basins,and has an important implication for understanding the internal correlation between the formation of carbonate cemented zones adjacent to top overpressured surface and geofluids expulsion out of overpressured system.

关键词： carbonate cemented zones formation mechanism stable carbon and oxygen isotopic top overpressured surface central Junggar Basin coal-bearing strata

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Quantitative description of characteristics of high-capacity channels in unconsolidated sandstone reservoirs using in situ production data

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Petroleum Science 2010年第1期7卷 106-111页

作者： Wang Xuezhong Wang Jianyong Wang Chuanfei Zeng Liufang Liu Xuewei Xinjiang Exploration ＆ Production Center Shengli Oilfield Company Sinopec Dongying Shandong 257000 China sinopec Beijing 100728 China china University of Petroleum Dongying Shandong 257061 China Gudong Oil Production Plant Shengli Oilfield Company Sinopec Dongying Shandong 257237 China Institute of Porous Flow ＆ Fluid Mechanics CNPC ＆ Chinese Academy of Sciences Langfang Hebei 065007 China

Quantitative description of the high-capacity channels in unconsolidated sandstone reservoirs, into which water was injected to improve oil recovery, is a hot topic in the field of reservoir development. This paper presents a novel approach to describing quantitatively the characteristics of connected macropores in unconsolidated sandstone reservoirs using in situ production data. Based on physical simulation for formation mechanisms of high capacity channels and interwell tracer test data, a mathematical model was established to describe high-capacity channels by grey correlation theory, flow mechanism of fluid in porous media and reservoir engineering, and a program was developed to describe quantitatively the channel characteristics. The predicted results were consistent with field monitoring data （80%）, so this model could be economically and effectively used to identify high-capacity channels.

关键词： High-capacity channel unconsolidated sandstone quantitative description physical simulation interwell tracer grey correlation theory

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