利用生烃动力学模型计算烃源岩的生烃量——以冀东探区为例  

Calculation of Generated Hydrocarbon Using Hydrocarbon Generation Kinetics Model——Take Jidong Zone as an Example

作　　者：范柏江[1] 张健[2] 

机构地区：[1]延安大学石油工程与环境工程学院,陕西延安716000 [2]中国石油冀东油田公司,河北唐山063200

出　　处：《延安大学学报（自然科学版）》2017年第3期63-67,71,共6页Journal of Yan'an University：Natural Science Edition

基　　金：国家科技重大专项"大型油气田及煤层气开发"项目(2011ZX05006-006);国家重大专项"新一轮全国油气资源评价"项目(zp-002);延安大学博士科研启动项目(YDBK2016-15)

摘　　要：生烃量的研究是油气资源评价中的一个重要环节。生烃量的计算结果直接影响研究区的油气资源潜力评价结果。冀东探区为一小型富油气探区,其烃源岩生成了多少油气缺乏系统认识。本文以烃源岩的基本地质条件分析为基础,采用生烃动力学模型来进行模拟计算,由此获得合理的生烃量。研究表明,冀东探区发育三套主力烃源岩,即沙三段烃源岩、沙一段烃源岩和东三段烃源岩。三套主力烃源岩具有规模大、有机质丰度高的特点。其有机质类型以Ⅱ2型为主且普遍进入中-高等成熟度、发生了大规模的生排烃过程。本区生烃条件优越、油源充足。基于地球化学实验数据,确定了各个化学动力学参数的取值标准;采用生烃动力学模型,计算获得研究区生烃量为197.43×108t。The study of hydrocarbon generation is an important part in the evaluation of oil and gas resources, The calculation result of hydrocarbon generation has direct impact on the oil and gas resource potential. The Jidong Zone is a small oil and gas abundance area,however,how many hydrocarbon have been generated is still a key issue facing researchers. In this paper, based on the analysis of the basic geological conditions of source rocks, the hydrocarbon generation kinetics model is used to simulate the quantity of generated hydrocarbon. The results show that, the major source rocks are Es3, Esl and Ed3 which are characteristic by their large scale and high organic abundance. The organic types in Jidong Zone mainly are II 2 and their thermal evolution degrees are favorable. A large scale of hydrocarbon generation and expulsion process has happened in the geologic history. The hydrocarbon generation condition is good and the hydrocarbon sources are rich. This paper utilizes laboratory data to get the accurate chemical kinetics parameters, and calculate the quantity of generated hydrocarbon. The result shows that, the quantity of generated hydrocarbon is 197.43×108t.

关 键 词：烃源岩评价 生烃动力 生烃量 

分 类 号：TE122.14[石油与天然气工程—油气勘探]