Differential Evolutions of Hydrocarbon Generation and Expulsion History of Lower Cambrian Source Rocks in Tahe Oilfield and Accumulation Effects

doi:10.3969/j.issn.1006-6535.2024.01.003

Abstract

Abstract: In response to the unclear understanding of the main controlling factors for multiphase oil and gas enrichment of the Ordovician oil reservoirs in Tahe Oilfield, the basin simulation technology was used to reconstruct the thermal evolution history and hydrocarbon generation history of the Lower Cambrian source rocks, and oil and gas migration and accumulation processes of typical profiles. The research shows that the Lower Cambrian source rocks in Tahe Area have entered a mature stage from the early Caledonian period and are currently in a high maturity-wet gas stage. They have developed three thermal evolution models of intermittent burial, continuous burial, and long-term shallow burial, corresponding to three hydrocarbon generation models of dual peak, strong oil and weak gas, and single peak. The differential thermal evolutions of source rocks lead to the history of oil and gas evolution with multiple stages of filling, vertical migration, and lateral adjustment and transformation in the Ordovician. The oil and gas phases present an orderly distribution pattern of light-medium-heavy oil reservoirs. The thermal evolutions of the Lower Cambrian source rocks in different structural belts in Tahe Area show a trend of increasing from northwest to southeast, showing a clear positive correlation with the differences in oil and gas phases, reflecting the characteristics of "source control". The thermal evolution characteristics controlled the distribution of current oil and gas reservoirs in the Himalayan period. Research indicates that the hydrocarbon generation intensities in the salt zone and Tuofutai of Tahe Oilfield are high, and the total amount of hydrocarbon generation during the Himalayan period is relatively large, making it a favorable area for further exploration and development. The research results have certain guiding significance for the evaluation of deep oil and gas resources and targets in Tahe Oilfield.

Key words: source rock, burial history, heat history, basin simulation, accumulation effect, Tahe Oilfield

CLC Number:

TE122

Xu Qinqi, Zhang Li, Li Bin, Zhong Li, Zhang Xin, Zhou Haodong. Differential Evolutions of Hydrocarbon Generation and Expulsion History of Lower Cambrian Source Rocks in Tahe Oilfield and Accumulation Effects[J]. Special Oil & Gas Reservoirs, 2024, 31(1): 20-30.

References

[1]江同文,韩剑发,邬光辉,等.塔里木盆地塔中隆起断控复式油气聚集的差异性及主控因素[J].石油勘探与开发,2020,47(2):229-241.
JIANG Tongwen,HAN Jianfa,WU Guanghui,et al,Differences and controlling factors of composite hydrocarbon accumulations in the Tazhong Uplift,Tarim Basin,NW China[J].Petroleum Exploration and Development,2020,47(2):229-241.
[2]JIN Zhijun,LIU Quanyou,YUN Jinbiao,et al.Oil and gas source and exploration direction of Manjiaer Sag around Tarim Basin[J].Chinese Science:Earth Sciences,2017,47(3):310-320.
[3]任战利.中国北方沉积盆地构造热演化史恢复及其对比研究[D].西安:西北大学,1998.
REN Zhanli.Comparative research on tectonical thermal history of sedimentary basin in the north China[D].Xi′an:Northwest University,1998.
[4]冯益潘.塔里木盆地阿克库勒凸起构造特征演化对油气的控制作用[D].成都:成都理工大学,2012.
FENG Yipan.The control action of tectonic evolution over oil and gas in Akekule Lobe of Tarim Basin[D].Chengdu:Chengdu University of Technology,2012.
[5]焦方正.塔里木盆地深层碳酸盐岩缝洞型油藏体积开发实践与认识[J].石油勘探与开发,2019,46(3):552-558.
JIAO Fangzheng.Practice and knowledge of volumetric development of deep fractured-vuggy carbonate reservoirs in Tarim Basin,NW China[J].Petroleum Exploration and Development 2019,46(3):552-558.
[6]汪洋,张哨楠,刘永立.塔里木盆地塔河油田走滑断裂活动对油气成藏的控制作用——以托甫39断裂带为例[J].石油实验地质,2022,44(3):394-401.
WANG Yang,ZHANG Zhaonan,LIU Yongli.Controls of strike-slip fault activities on hydrocarbon accumulation in Tahe Oilfield,Tarim Basin:a case study of TP 39 fault zone[J].Oil & Gas Geology,2022,44(3):394-401.
[7]云露,蒋华山.塔河油田成藏条件与富集规律[J].石油与天然气地质,2007,28(6):768-775.
YUN Lu,JIANG Huashan.Hydrocarbon accumulation conditions and enrichment rules in Tahe Oilfield [J].Oil & Gas Geology,2007,28(6):768-775.
[8]丁勇.塔河油田奥陶系油气藏流体分布与受控因素[J].海相油气地质,2016,21(1):13-18.
DING Yong.Distribution and control factors of fluids in Ordovician reservoirs in Tahe Oil Field,Tarim Basin[J].Marine Origin Petroleum Geology,2016,21(1):13-18.
[9]赵永强,云露,王斌,等.塔里木盆地塔河油田中西部奥陶系油气成藏主控因素与动态成藏过程[J].石油实验地质,2021,43(5):758-766.
ZHAO Yongqiang,YUN Lu,WANG Bin,et al.Main constrains and dynamic process of Ordovician hydrocarbon accumulation, central and western Tahe Oil Field,Tarim Basin[J].Petroleum Geology & Experiment, 2021,43(5):758-766.
[10] 刘韵.阿克库勒地区古构造演化与油气关系研究[D].成都:成都理工大学,2010.
LIU Yun.A research on the relationship of oil-gas and the ancient structure in Akekule Area[D].Chengdu:Chengdu University of Technology,2010.
[11] 郑见超,李斌,刘羿伶,等.塔里木盆地下寒武统玉尔吐斯组烃源岩热演化模拟分析[J].油气藏评价与开发,2018,8(6):7-12.
ZHENG Jianchao,LI Bin,LIU Yiling,et al.Study on thermal evolution modeling of Lower Cambrian Yuertusi source rock, Tarim Basin[J].Petroleum reservoir evaluation and development,2018,8(6):7-12.
[12] 郑见超,李斌,吴海燕,等.基于盆地模拟技术的烃源岩热演化史及油气关系研究——以塔里木盆地玉尔吐斯组为例[J].油气地质与采收率,2018,25(5):39-49.
ZHENG Jianchao,LI Bin,WU Haiyan,et al.Study on the thermal history of the source rock and its relationship with hydrocarbon accumulation based on the basin modeling technology:a case of the Yuertusi Formation of Tarim Basin [J].Petroleum Geology and Recovery Efficiency,2018,25(5):39-49.
[13] LIN Changsong,YANG Haijun,LIU Jingyan,et al.Distribution and erosion of the Paleozoic tectonic unconformities in the Tarim Basin, northwest China:significance for the evolution of paleo-uplifts and tectonic geography during deformation[J].Journal of Asian Earth Sciences,2012,46:1-19.
[14] 李斌,张欣,郭强,等.塔里木盆地寒武系超深层含油气系统盆地模拟[J].石油学报,2022,43(6):804-815.
LI Bin,ZHANG Xin,GUO Qiang,et al.Basin modeling of Cambrian ultra-deep petroleum system in Tarim Basin[J].Acta Petrolei Sinica,2022,43(6):804-815.
[15] 高志前,樊太亮,李岩等.塔里木盆地寒武—奥陶纪海平面升降变化规律研究[J].吉林大学学报(地球科学版),2006,36(4):549-556.
GAO Zhiqian,FAN Tailiang,LI Yan,et al.Study on eustatic sea-level change rule in Cambrian-Ordovician in tarim basin[J].Journal of Jilin University(Earth Science Edition),2006,36(4):549-556.
[16] 于靖波,张健,史保平.塔里木盆地巴楚隆起区构造-热演化历史研究[J].地球物理学报,2010,53(10):2396-2404.
YU Jingbo,ZHANG Jian,SHI Baoping,et al.A study on tectono-thermal evolution history of Bachu Uplift in Tarim Basin[J].Chinese Journal of Geophysics,2010,53(10):2396-2404.
[17] 郭秋麟,黄少英,卢玉红,等.塔里木盆地台盆区下古生界油气系统模拟及资源分布预测[J].石油学报,2023,44(9):1459-1471.
GUO Qiulin,HUANG Shaoying,LU Yuhong,et al.Modeling and resource distribution prediction of Lower Paleozolic petroleum system in platform area of Tarim Basin[J].Acta Petrolei Sinica, 2023,44(9):1459-1471.
[18] 高岗,柳广弟.资源评价中油气生成定量模型的建立[J].天然气工业,2006,26(10):6-8.
GAO Gang,LIU Guangdi.Quantitative modeling of hydrocarbon generation in resource assessment[J].Natural Gas Industry,2006,26(10):6-8.
[19] 许淼.塔里木盆地寒武—奥陶系烃源岩生排烃评价[D].大庆:东北石油大学,2011.
XU Miao.Hydrocarbon generation and expolsion appraisment for Cambrian-Ordovician source rocks,Tarim Basin[D].Daqing:Northeast Petroleum University,2011.
[20] 韩慧宇.塔里木盆地玉尔吐斯组烃源岩成因及生烃能力分析[D].北京:中国地质大学(北京),2017.
HAN Huiyu.The sedimentary model and hydrocarbon generation potential of Yurtus Formation source rocks in Tarim Basin[D].Beijing:China University of Geosciences (Beijing),2017.
[21] 周总瑛,何宏.塔河油田奥陶系石油资源量预测[J].新疆石油地质,2007,28(1):7-10.
ZHOU Zongying,HE Hong.Quantitative prediction of Ordovician petroleum resources in Tahe Oilfield[J].Xinxiang Petroleum Geology,2007,28(1):7-10.
[22] 张文彪,张亚雄,段太忠,等.塔里木盆地塔河油田托甫台区奥陶系碳酸盐岩断溶体系层次建模方法[J].石油与天然气地质,2022,43(1):207-218.
ZHANG Wenbiao,ZHANG Yaxiong,DUAN Taizhong,et al.Hierarchy modeling of the Ordovician fault-karst carbonate reservoir in Tuoputai Area,Tahe Oilfield,Tarim Basin,NW China[J].Oil & Gas Geology,2022,43(1):207-218.
[23] 巫波,杨文东,姜应兵,等.利用注水替油资料计算塔河缝洞型油藏动态储量的方法[J].大庆石油地质与开发,2022,41(2):59-66.
WU Bo,YANG Wendong,JIANG Yingbing,et al. Calculating method of the dynamic reserves by water injecting and oil flooding data for the fractured vuggy oil reservoirs in Tahe Oilfield[J]. Petroleum Geology & Oilfield Development in Daqing,2022,41(2):59-66.