催化裂化干气组分在沸石Y上吸附的分子模拟

Adsorption of catalytic cracking dry gas components, hydrogen (H2), nitrogen (N2), methane (CH4), ethane (C2H6) and ethylene (C2H4) in zeolite Y was studied by performing the Grant Canonical Monte Carlo (GCMC) simulations at 298 and 823K and a pressure range up to 10MPa. Simulation results were analyzed using Langmuir model and it presented fitting of dry gas components adsorption suggesting monolayer adsorption. C2H4 presented most single adsorption amount, which reached 7.63mol/kg at 298K under 200kPa. Thermodynamic parameters of Gibbs free energy change, enthalpy change and entropy change were analyzed based on adsorption equilibrium constant obtained from the GCMC simulations. The results suggested that it was more favorable for C2H4 to adsorb in zeolite Y. Adsorption molecules were in ordered arrangement in zeolite, and C2H4 exhibited more orderly arrangement than other components. Additionally, it was found that there was a competition between dry gas components for mixture adsorption, supercages were prior adsorption space. The competition was favorable to CH4 and C2H6, and competitive power was affected by temperature.     

断裂密集带对油气运移和聚集的制约研究——以王府凹陷为例

为弄清断裂密集带对油气运移、聚集的控制作用,选取构造特征典型、油源单一的王府凹陷为例,按断裂密集带平、剖面特征对其进行分类.将王府凹陷扶杨油层断裂密集带分为4种类型,即地堑-反向断阶组合、地堑-反向-顺向断阶组合、地堑-地垒反向断阶组合和地堑-地垒-顺向断阶组合.通过分析断裂密集带中油气显示情况,探讨断裂密集带对油气运聚的制约作用.结果表明:断裂密集带对油气二次运移具有横向遮挡、侧向输导作用,并制约油气聚集.当断裂密集带走向与地层倾向近平行时,其两侧地垒、反向断阶是油气聚集优势部位;当其走向与地层倾向近垂直时,靠近生烃凹陷一侧的地垒、反向断阶优先捕捉油气,断裂密集带交汇处是油气富集有利部位.     

大庆长垣以西黑帝庙油层成藏主控因素分析与油气潜力区预测

在综合分析大庆长垣以西黑帝庙油层油气成藏主控因素的基础上,认为烃源岩、砂体不是制约黑帝庙油层油气成藏的关键因素,而T2-T06、T1-T06断裂和圈闭的遮挡条件对其油气成藏起着至关重要的作用。齐家凹陷附近不发育T2-T06、T1-T06断裂,缺少油气垂向运移的通道,在该区黑帝庙油层发现工业油气藏的可能性较小;在古龙凹陷附近预测4个油气潜力区。     

渝东南地区彭页1井泥页岩微观孔隙结构特征

针对渝东南地区泥页岩储层微观孔隙结构认识不清的状况,应用氩离子剖光扫描电子显微镜、压汞、低温N₂ 吸附解吸等方法,对渝东南地区下志留统龙马溪组海相泥页岩储层微观孔隙类型及其特征进行研究。结果表明：泥页岩样品中主要发育微裂缝、微孔道、絮状物孔隙、晶间孔、晶内孔、有机质孔隙和生物化石内孔隙等孔隙类型,其中微裂缝、微孔道和絮状物孔隙等微观孔隙相互连通,构成了页岩气储层主要的渗流运移通道;龙马溪组海相泥页岩样品孔隙形态多变,具有平行壁的狭缝状孔隙特征,且具有裂缝性孔隙特征,以开放型孔隙为主;其孔径分布范围广,从纳米级到微米级均有发育,纳米级孔隙和微米级孔隙分别提供0.95和1.60％的孔隙度。该研究结果为下一步研究页岩气的赋存状态以及储集性能提供依据。     

中国典型陆相盆地致密油成储界限与分级评价标准

基于松辽盆地下白垩统泉头组和上白垩统青山口组砂岩、准噶尔盆地玛湖地区下三叠统百口泉组砂砾岩和吉木萨尔凹陷二叠系芦草沟组混积岩等中国典型陆相盆地致密储集层微观孔喉表征结果,利用水膜厚度法、含油产状法、试油产能法、力学平衡法对致密油的理论下限、成藏下限、有效渗流下限和成储上限进行厘定;采用聚类分析法对比不同致密储集层孔喉结...