页岩油可动资源量评价方法探讨及在东濮凹陷北部古近系沙河街组应用  

The Discussion of the Evaluation Method of Shale Oil Movable Resources Amount and Palaeogene Shahejie Formation Application Effect in the Northern of Dongpu Depression

作　　者：王文广[1,2,3] 郑民[2] 王民 卢双舫 彭君[4] 鹿坤[4] 吴晓智[2] 黄爱华[1] 

机构地区：[1]东北石油大学地球科学学院,黑龙江大庆163318 [2]中国石油勘探开发研究院,北京100083 [3]中国石油大学(华东)非常规油气与新能源研究院,山东青岛266580 [4]中原油田勘探开发科学研究院,河南濮阳457001

出　　处：《天然气地球科学》2015年第4期771-781,共11页Natural Gas Geoscience

基　　金：青年科学基金项目"生油阶段湖相泥页岩孔隙演化特征及其与页岩油富集关系"(编号:41402110);中国石油科技创新基金"泥页岩非均质性及其对泥页岩油气富集的影响"(编号:2011D-5006-0101);国家自然科学基金"泥页岩非均质性评价及其与页岩油气富集关系"(编号:41172134);中国石油集团科技重大专项"第四次油气资源评价"(编号:2013E0502)联合资助

摘　　要：中国页岩油资源潜力巨大,而页岩油的可动性评价影响了该类资源的勘探与开发。本文提出一种泥页岩油可动资源量评价方法,具体包括以下内容:1划分泥页岩层系,识别标准为:起始段和结尾段为大于2m的泥页岩段,单层泥页岩内有机质成熟度(RO)和有机碳均值大于0.5%,单层砂岩厚度小于2m,10m范围内薄砂层累计厚度小于4m,总厚度≥30m,页岩油可动资源量评价是针对狭义的泥页岩;2页岩饱和吸附油量评价模型,是基于泥页岩体积(展布、厚度)、有机碳、泥页岩密度和饱和吸附系数4个参数建立的;3原地页岩油资源量评价模型,是依据页岩含油率、泥页岩体积、岩石密度及轻烃重烃补偿系数4个参数建立的;4页岩油可动资源量评价模型,结合物质平衡原理,页岩油可动资源量等于原地页岩油资源量减去页岩油饱和吸附油量。应用上述方法对东濮凹陷古近系沙河街组沙一段、沙三上亚段、沙三中亚段、沙三下亚段泥页岩层系内页岩油资源量进行评价,结果为:沙一段、沙三上亚段、沙三中亚段及沙三下亚段泥页岩层系内页岩油可动资源量分别为1.27×108t、4.27×108t、2.73×108t和2.59×108t,柳屯洼陷具有很大的勘探潜力。China has huge shale oil potential. However,shale oil mobility evaluation affects the exploration and development of shale oil. This study proposes a kind of evaluation method of movable resources amount of shale oil,and includes the following points： （1） The division of shale layer-system and recogni- tion criteria were defined in detail as follows： The start and end sections are greater than 2m shale section. The organic matter maturity and average organic carbon in a single shale layer are greater than 0.5 %. Single sandstone thickness is less than 2m. Thin sand layer thickness within accumulated 10m-scope is less than 4m. The total thickness is greater than or equal to 30m. The movable resource evaluation of shale oil refers to the narrow sense. （2） Adsorption oil evaluation model of shale oil,which is established based on shale volume （distribution, thickness）, organic carbon and shale density and saturated adsorption coefficient. （3） In situ shale oil evaluation model,which is established depending on the four Parameters： percentage of shale oil, shale volume （distribution, thickness）, rock density, heavy hydrocarbon compensation and light hydrocarbon recovery coefficient. （4） Movable resources amount of shale oil. According to material balance principle, movable resources amount of shale oil equals to the amount where in situ resources amount of oil shale minus shale saturated adsorption oil amount. Using the above method, we evaluated the shale oil movable resources amount of shale oil in shale layer-system of ESl , Es3^s , Es3^z , Es3^x in the northern Dongpu Depression. The result is that movable resources amount of shale oil in shale layer-system of Es1 , Es3^s,Es3^z andEs3^xare 1.27×10^8t,4.27×10^8t,2.73×10^8t and 2.59×10^8t,respectively. Liutun Sag has huge oil and gas potential.

关 键 词：可动资源量 泥页岩层系 页岩油 东濮凹陷 轻烃恢复 重烃校正 

分 类 号：TE132.3[石油与天然气工程—油气勘探]