煤岩有机质演化过程中产油气量物质平衡优化模拟计算

基于物质平衡条件条件和油气产物特征，提出了用单纯形优化方法模拟计算煤岩有机质转化过程中油气产量的新方法。应用该方法对煤岩中稳定组、镜质组、丝质组自Ｒ０＝０．２％开始向更高变质程度转化过程中的ＣＨ４、Ｃ２Ｈ６、Ｃ３Ｈ８、Ｃ４Ｈ１０、ＣＯ２、Ｈ２Ｓ、Ｎ２、Ｈ２、Ｈ２Ｏ、ＯＩＬ（油）十种组合的产量进行模拟计算。通过数学分析，确定了各种产物组分的发生率与其转化程度之间的函数关系。与热模拟实验法和蒂索等人提     

盐湖相低熟油脂肪酸的组成与分布特征

对泌阳凹陷碱性盐湖相、舞阳凹陷盐湖相、襄城凹陷膏盐湖相、南阳凹陷淡水湖相低熟油脂肪酸组成和分布特征进行了分析与研究。结果表明这些不同盐湖相的低熟原油的脂肪酸为丰度不同的饱和正构酸、不饱和正构酸、少量异构酸、类异戊二烯酸及脂肪酸乙酯系列化合物。脂肪酸的组成和分布反映了原始有机质的来源。     

利用铀油关系寻找可地浸砂岩型铀矿

可地浸砂岩型铀矿多数赋存于产油气盆地,并与油气关系十分密切。本文通过对可地浸砂岩型铀矿的成因分类、与油气藏的关系及与气藏异同点的分析对比,总结了几种典型油气藏上方的放射性异常模式。以二连盆地可地浸砂岩型铀矿与油气藏的客观相伴关系为例,在鄂尔多斯盆地进行了应用试验,取得了一定效果。因此,利用铀油相伴关系,在油气勘探中注意寻找铀矿(化)床,在铀矿(化)床周围的有利构造部位加强油气勘探是十分重要的。     

利用核磁共振技术对丘陵油田低渗储层可动油的研究

为了定量评价储层可动油饱和度及渗流能力,应用核磁共振技术对丘陵油田40块岩心的可动油饱和度进行了定量测试.研究表明,丘陵油田低渗透储层可动油饱和度值的分布范围是4.8%~56.7%,平均值为33.4%.可动油饱和度高低与岩心孔隙度、渗透率及驱油效率呈正相关关系.各类储层可动油饱和度差异较大,储层沉积微相及物性决定了可动油饱和度和渗流能力的大小.     

膨胀石墨负载纳米TiO_2材料对机油的吸附和光催化降解

用溶胶凝胶法将纳米锐钛矿负载到膨胀石墨上,制备了即可吸油,又可降解油的膨胀石墨-TiO_2复合材料(EG-TiO_2)。在制备EG-TiO_2的工艺条件中,浸渍次数是影响其吸油能力的最主要因素,浸渍次数增多饱和吸油量下降。用失重法和红外光谱法研究EG-TiO_2催化降解机油的结果表明,EG-TiO_2对机油有明显的光催化降解效果,性能优于纯纳米TiO_2粉,其原因与EG-TiO_2中的纳米TiO_2具有三维立体薄片状结构及具有较高吸油性能有关。膨胀石墨负载纳米TiO_2材料对机油的吸附和光催化降解@曹宏$武汉工程大学材料学院!430074 @马恩宝$武汉工程大…     

Interactions between basalts and oil source rocks in rift basins： CO2 generation

Basalts interbedded with oil source rocks are discovered frequently in rift basins of eastern China, where CO2 is found in reservoirs around or within basalts, for example in the Binnan reservoir of the Dongying Depression. In the reservoirs, CO2 with heavy carbon isotopic composition (δ13C>-10‰ PDB) is in most cases accounts for 40% of the total gas reserve, and is believed to have resulted from degassing of basaltic magma from the mantle. In their investigations of the Binnan reservoir, the authors suggested that the CO2 would result from interactions between the source rocks and basalts. As the source rocks around basalts are rich in carbonate minerals, volcanic minerals, transition metals and organic matter, during their burial history some of the transition metals were catalyzed on the thermal degradation of organic matter into hydrocarbons and on the decomposition of carbonate minerals into CO2, which was reproduced in thermal simulations of the source rocks with the transition metals (Ni and Co). This kind of CO2 accounts for 55%-85% of the total gas reserve generated in the process of thermal simulation, and its δ13C values range from -11‰- -7.2‰ PDB, which are very similar to those of CO2 found in the Binnan reservoir. The co-generation of CO2 and hydrocarbon gases makes it possible their accumulation together in one trap. In other words, if the CO2 resulted directly from degassing of basaltic magma or was derived from the mantle, it could not be accumulated with hydrocarbon gases because it came into the basin much earlier than hydrocarbon generation and much earlier than trap formation. Therefore, the source rocks around basalts generated hydrocarbons and CO2 simultaneously through catalysis of Co and Ni transition metals, which is useful for the explanation of co-accumulation of hydrocarbon gases and CO2 in rift basins in eastern China.