基于老井资料的碳酸盐岩储层测井解释研究

碳酸盐岩储层岩性复杂，老油气区测井系列不全，测井定量解释的难度很大。文章选取研究区有利构造部位测井项目齐全的井，以取心和测试层段为研究基础，通过深入分析典型储层岩性、物性及含油气性在电性上的响应特征，分类建立了中子、密度与其它测井曲线的关系数据样本，用BP神经网络方法建立中子和密度曲线的构建模型并预测其它老井的中子和密度曲线；用最优化测井解释方法，在准确识别岩性的基础上完成较高精度的测井资料数字处理；结合试气和投产资料，建立储层及有效厚度评价标准，进行储层测井综合解释。用该方法对老气田12口井三叠系嘉二段储层进行了精细测井处理和解释，取得了比较满意的效果。分析认为：在碳酸盐岩储层测井解释中，岩性识别是关键；BP神经网络在构建测井曲线中有其独到之处，该研究思路和方法对老井复查工作有一定的参考使用价值。     

Reducing CO2 emissions from oil shale semicoke smoldering combustion by varying the carbonate and fixed carbon contents

One technique used to recover oil from ground oil shale, or to burn oil shale semicoke, consists of propagating a smoldering front through a packed bed. One drawback of this technique is that the mineral structure of the shale is decarbonated due to the high temperature of the front. This phenomenon causes 70% of the CO₂ emissions released during such processes. The remaining 30% result from the fixed carbon oxidation. With the aim of decreasing the front temperature and thus avoiding decarbonation at the front passage, the impact of two parameters was experimentally tested in this work: first, increasing the amount of carbonates, as they may play the role of a heat sink, and second, decreasing the amount of fixed carbon in the medium. It is shown that increasing the amount of carbonates can only decrease the front temperature to 800 °C but not lower, which is still too high to avoid decarbonation. On the other hand, the front temperature can be decreased enough for decarbonation to be almost completely avoided by reducing the amount of fixed carbon. At the low temperatures reached, almost all the fixed carbon is oxidized, but not all the oxygen transported in the air is consumed by the chemical front. The velocity of the front is consequently decreased.     

测井储层描述在塔中Ⅰ号礁滩体中的应用

塔中Ⅰ号坡折带上奥陶统礁滩体储层岩性以碳酸盐岩为主，在测井储层表征与定量评价中，由于储集空间的多样性及其组合的复杂性，给利用测井资料评价碳酸盐岩储层带来了一系列困难。文中以测井资料为基础，结合岩心、实验、试油等资料，划分出储层储集空间的类型和储层类型。分别建立了不同类型储层的各种测井响应特征及响应模板，并在此基础上建立了礁滩体储层类型的划分标准。根据不同储集类型的孔、渗关系，结合中国石油天然气行业标准，建立了礁滩体不同储层级别的解释图版和解释标准，所划分的储层级别与礁滩体沉积相带具有很好的对比关系，为测井储层评价和完井试油层段的选择提供了可靠的解释依据。     

测井在碳酸盐岩气藏储量计算中的应用

随着测井采集技术和测井资料评价技术的飞速发展,测井技术在储量计算中的应用越来越广泛,所起的作用也越来越重要.四川测井公司经过多年的探索与实践,通过开展探井测井精细解释、RFT地层测试技术应用及测井地震结合储层横向预测技术研究,已形成了一套应用测井资料全面、细致分析地层、构造、储层的测井精细解释技术,1997～2000年间,共完成了36口井的探井精细解释工作,取得了可喜的成果,在碳酸盐岩气藏储量计算中发挥了重要作用.     

无皂乳液聚合制备碳酸钙-聚苯乙烯复合物胶粒

研究了碳酸钙－苯乙烯－过硫酸铵体系的无皂乳液聚合反应。分别探讨了反应时间、引发剂用量、单体用量、碳酸钙用量对苯乙烯的转化率、碳酸钙的表观包覆率、包复率的影响及反应时间对复合物胶粒表面电性的影响。     

露头碳酸盐岩旋回层序的识别与划分

在海相碳酸盐岩新区勘探中，露头层序地层学是一种重要的勘探手段。归纳了露头碳酸盐岩米级旋回层序的识别特征和划分依据，识别和测量了北京西山丁家滩剖面的米级旋回层序，并分析其垂直叠加型式，划分了长周期旋回层序。结果表明，通常是４～６个向上变厚并变浅的米级旋回层序构成一个五级旋回层序；４个总体向上变厚并变浅的五级旋回层序构成一个四级旋回层序；３～５个四级旋回层序构成一个更大级别的总体向上变厚变浅的序列。图１表１参６（邹冬平摘）     

塔河油田奥陶系碳酸盐岩油藏堵水工艺技术浅谈

对塔河油田奥陶系碳酸盐岩油藏的储层特点进行了论述,并重点阐述了塔河油田堵水工艺的技术现状和需要重点研究的内容.对已经实施堵水的不同类型油井的现场试验效果进行了分析与评价,并在此基础上,通过对采用不同完井方式投产的油井所表现出的地层见水规律和出水原因的不同的分析,归纳出了几种较为典型的堵水地质模型,提出应根据不同的模型合理选择相应的堵水方式的建议.     

Microbial and Waterflooding of Fractured Carbonate Rocks: An Experimental Approach

Fractures and fractured zones require special attention while formulating a reservoir development plan. They may improve or hinder the oil production. Conductive fracture rocks may provide the required permeability to drain an oil saturated low permeability rock matrix. Low sweep efficiency of many oil reservoirs is the result of channelling of injected water through high permeability zones that are normally associated with naturally fractured systems in heterogeneous reservoirs. In this case, a substantial amount of effort needs to be focused on improving the distribution of injected water in the wellbore through different treatments, such as using gelling agents, cements, cross-linked polymer and emulsions. Other alternatives such as microbial and surfactant based methods have been proposed. This paper presents the results of research conducted on thermophilic bacteria that were obtained from UAE local environment. Coreflooding experiments were conducted on fractured single cores to show the effectiveness of microbial treatment. Different fracture angle orientations of 45°, 90°, and 180° relevant to the axis of the flow were investigated. The effect of matrix permeability on the treatment was also studied. A comparison between water flooding and microbial flooding of fractured systems was conducted. A non-invasive imaging technique—Scanning Electron Microscopy (SEM)—was employed to visualize changes on the surface of the fracture as a result of bacteria flow through the system.     

湿式搅拌磨细磨重质碳酸钙的实践和微粉加工工艺

介绍了ＧＳＤＭ－４００型超细盘式搅拌磨细磨不同产地重质碳酸钙的工艺实践，阐述了造纸涂布级重钙微粉的超细加工工艺，分析了各种工艺的特点和选择依据。     

孔隙性碳酸盐岩储集层分类的模糊物元关联分析法

提出了一种孔隙性碳酸盐岩储集层分类的新方法,即模糊物元关联分析.实例表明与其他方法一致,并与实际相符,可推广使用.