The distribution of microcosmic remaining oils after polymer flooding in Daqing oilfield

doi:10.7623/syxb201305013

Editorial office of ACTA PETROLEI SINICA ›› 2013, Vol. 34 ›› Issue (5): 924-931.DOI: 10.7623/syxb201305013

Previous Articles Next Articles

The distribution of microcosmic remaining oils after polymer flooding in Daqing oilfield

BAI Zhenqiang^1,2, WU Shenghe¹, FU Zhiguo²

1. Institute of Earth Sciences, China University of Petroleum, Beijing 102249, China;
2. Research Institute of Petroleum Exploration & Development, Daqing Oilfield Company Limited, Daqing 163712, China

Received:2013-02-17 Revised:2013-07-18 Online:2013-09-25 Published:2013-08-01

大庆油田聚合物驱后微观剩余油分布规律

白振强^1,2, 吴胜和¹, 付志国²

1. 中国石油大学地球科学学院北京 102249;
2. 大庆油田有限责任公司勘探开发研究院黑龙江大庆 163712

通讯作者: 白振强
作者简介:白振强,男,1978年11月生,2002年毕业于西安石油学院,现为中国石油大学(北京)地球科学学院博士研究生,主要从事油藏精细描述科研工作。Email:baizhenqiang@petrochina.com.cn
基金资助:
国家重大科技专项(2011ZX05052)资助。

Abstract

Abstract:

The distribution of microcosmic remaining oils after polymer flooding is a basis for forecasting and tapping the potential of remaining oils after polymer flooding. By applying some novel methods wihich including frozen sectioning, ultraviolet fluorescence and laser confocal scanning microscopic analysis, distribution laws are studied about microcosmic remaining oils after polymer flooding in rock samples with different water-washing degrees from the Daqing oilfield. The analytical result demonstrated that the remaining oil in weak water-washing rocks after polymer flooding is mainly in cluster and intergranular adsorption forms of free residual oils, while the bounded remaining oil in medium water-washing rocks accounts for 42.9% of the total microcosmic remaining oils and the remaining oil in strong water-washing rocks occurs mainly in a bounded form of thin oil film that envelops the particle surface. With the increase of oil displacement degree after polymer flooding, the proportion of lightweight hydrocarbon components decreases significantly, while that of heavy hydrocarbon fractions increases relatively. In general, heavy hydrocarbon components are continuously distributed on the surface of rock particles, while lightweight hydrocarbon components occur in intergranular pores mainly in a flaky, relatively continuous and whole scattered but locally enriched state. The clay minerals and lightweight hydrocarbon components coexist within intragranular micropores and tiny pore throats. There is no oil within particle fractures and pores that are fully filled with clay minerals.

Key words: ultraviolet fluorescence, laser confocal scanning, polymer flooding, microcosmic remaining oil, crude oil fraction

摘要：

聚驱后微观剩余油分布规律是进行聚驱后剩余油预测和挖潜的基础。利用冷冻制片、紫外荧光和激光共聚焦扫描显微分析方法,对大庆油田聚合物驱后不同水洗程度岩样微观剩余油分布规律进行研究。分析认为,聚驱后弱水洗岩样剩余油以簇状和粒间吸附状自由态剩余油类型为主,中水洗样品束缚态剩余油所占比例达到42.9%,强水洗样品的剩余油以颗粒表面薄油膜状的束缚态分布为主。聚驱后随着驱油程度增加,轻质组分比例减少明显,而重质组分比例增加,重质组分呈连片型分布在岩石颗粒表面,轻质组分则呈小片状和较为连续的整体零散、局部富集的状态分布在粒间孔隙中。粒内微孔和粒间微小喉道处黏土矿物与轻质组分共存,在颗粒内被黏土矿物完全充填的粒内裂隙和微孔中没有原油分布。

关键词: 紫外荧光, 激光共聚焦, 聚合物驱, 微观剩余油, 原油组分

CLC Number:

TE357

BAI Zhenqiang, WU Shenghe, FU Zhiguo. The distribution of microcosmic remaining oils after polymer flooding in Daqing oilfield[J]. Editorial office of ACTA PETROLEI SINICA, 2013, 34(5): 924-931.

白振强, 吴胜和, 付志国. 大庆油田聚合物驱后微观剩余油分布规律[J]. 石油学报, 2013, 34(5): 924-931.

References

[1] 李洁,隋新光,邵振波.大庆油田葡一组油层聚驱后剩余油微观分布规律研究[J].大庆石油地质与开发, 2005,24(2):26-28.
Li Jie,Sui Xinguang,Shao Zhenbo.Microscopic distribution law of remained oil in P1 reservoir of Daqing oilfield[J].Petroleum Geology & Oilfield Development in Daqing,2005,24(2):26-28.
[2] 张继成,李朦,穆文志,等.聚合物驱后宏观和微观剩余油分布规律[J].齐齐哈尔大学学报:自然科学版,2008,24(1):31-36.
Zhang Jicheng,Li Meng,Mu Wenzhi,et al.Macroscopic and microscopic distribution of the remaining oil after polymer flooding[J].Journal of Qiqihar University:Natural Science Edition,2008,24(1):31-36.
[3] 李振泉,侯健,曹绪龙,等.储层微观参数对剩余油分布影响的微观模拟研究[J].石油学报,2005,26(6):69-73.
Li Zhenquan,Hou Jian,Cao Xulong,et al.Microscopic simulation for influence of microscopic reservoir parameters on remaining oil distribution[J].Acta Petrolei Sinica,2005,26(6):69-73.
[4] 孙先达,索丽敏,张民志,等.激光共聚焦扫描显微检测技术在大庆探区储层分析研究中的新进展[J].岩石学报, 2005,21(5):1479-1488.
Sun Xianda,Suo Limin,Zhang Minzhi,et al.New progress of reservoir research by the technology of laser confocal scanning microscope analysis in the Daqing exploration area[J].Acta Petrologica Sinica,2005,21(5):1479-1488.
[5] Beaudoin G,Taylor B E.MIES laser Microprobe: part 2:perliminary assessment of precision and accuracy of Sulphur isotope analysis[M].Ottawa:Geological Survey of Canada,1993.
[6] 彭红利,周小平,姚广聚,等.大孔道油藏聚驱后微观剩余油分布规律及提高采收率实验室研究[J].天然气勘探与开发,2005,28(3):62-65.
Peng Hongli,Zhou Xiaoping,Yao Guangju,et al.Laboratory research on microscopic distribution of residual oil after polymer driving and how to improve recovery factor for reservoirs with big porous channels[J].Natural Gas Exploration and Development,2005,28(3):62-65.
[7] 王为民,郭和坤,孙佃庆,等.用核磁共振成像技术研究聚合物驱油过程[J].石油学报,1997, 18(4):54-59.
Wang Weimin,Guo Hekun,Sun Dianqing,et al.A study on polymer flooding by MRI techniques[J].Acta Petrolei Sinica,1997,18(4):54-59.
[8] 郭建军,陈践发,李粉丽,等.注水开发过程中原油的水洗作用初探[J].地球化学,2007, 36(2):215-221.
Guo Jianjun,Chen Jianfa,Li Fenli,et al.Influence of water washing on crude oils during water flooding[J].Geochimica,2007,36(2):215-221.
[9] 徐正顺,张居和,冯子辉,等.大庆油田水驱及聚合物驱油藏剩余油黏度特征研究[J].中国科学D辑: 地球科学,2009,39(12):1709-1720.
Xu Zhengshun,Zhang Juhe,Feng Zihui,et al.Characteristics of remaining oil viscosity in water- and polymer-flooding reservoirs in Daqing oilfield[J].Sciemce China Series D:Earth Scionce,2010,53(1):72-83.
[10] 陈祖林,朱扬明,陈奇.油层不同开采时期原油组分变化特征[J].沉积学报,2002,20(1):169-173.
Chen Zulin,Zhu Yangming,Chen Qi.The change of crude oil components in different production stages[J].Acta Sedimentologica Sinica,2002,20(1):169-173.
[11] 宋万超,孙焕泉,孙国,等.油藏开发流体动力地质作用——以胜坨油田二区为例[J].石油学报,2002,23(3):52-55.
Song Wanchao,Sun Huanquan,Sun Guo,et al.Dynamical geologic process of development liquid:taking Shengtuo oilfield as an example[J].Acta Petrolei Sinica,2002,23(3):52-55.
[12] 徐守余,李红南.储集层孔喉网络场演化规律和剩余油分布[J].石油学报,2003,24(4):48-53.
Xu Shouyu,Li Hongnan.Evolvement of reservoir pore-throat-net and remaining oil distribution[J].Acta Petrolei Sinica,2003,24(4):48-53.
[13] 何雅娟,周江羽,王旭丽.伊通盆地岔路河断陷粘土矿物特征及其对储层物性的影响[J].沉积与特提斯地质,2009,29(4):57-61.
He Yajuan,Zhou Jiangyu,Wang Xuli.Clay minerals and their effects on physical properties of the hydrocarbon reservoirs in the Chaluhe depression,Yitong Basin,Jilin[J].Sedimentary Geology and Tethyan Geology,2009,29(4):57-61.
[14] 王渝明,王加滢,康红庆,等.聚合物驱阶段提高采收率预测模型的建立与应用[J].石油学报,2013,34(3):513-517.
Wang Yuming,Wang Jiaying,Kang Hongqing,et al.Establishment and application of a prediction model for enhanced oil recovery in polymer flooding[J].Acta Petrolei Sinica,2013,34(3):513-517.
[15] 李宜强,苏伟明,王争进,等.二类油层不同注采类型井组聚驱最佳调整时机[J].石油学报,2012,33(4):647-652.
Li Yiqiang,Su Weiming,Wang Zhengjin,et al.The optimal adjustment moment of polymer flooding for different injection-production types in class Ⅱoil layers[J].Acta Petrolei Sinica,2012,33(4):647-652.

The distribution of microcosmic remaining oils after polymer flooding in Daqing oilfield

大庆油田聚合物驱后微观剩余油分布规律

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments

[1]	Wang Zhengmao, Han Xu, Pan Feng, Fan Yu, Yan Yiqun, Zhou Xiaosong, Li Cheng. Property evaluation and pilot test of emulsion polymer for oil displacement [J]. Acta Petrolei Sinica, 2024, 45(6): 976-987.
[2]	Lu Xiangguo, He Xin, Cao Bao, Wang Xiaoyan, Gao Jianchong, Liu Yigang, Cao Weijia. Injection profile reversal mechanisms of polymer flooding and its countermeasures and practical effects [J]. Acta Petrolei Sinica, 2023, 44(6): 962-974.
[3]	Ji Yanfeng, Yang Yong, Cao Xulong, Zhang Shiming, Cao Xiaopeng, Yuan Fuqing. Development and evaluation of microencapsulated emulsion polymer flooding agent [J]. Acta Petrolei Sinica, 2023, 44(6): 975-982.
[4]	Zhu Yan, Gao Wenbin, Li Ruisheng, Li Yiqiang, Yuan Jingshu, Kong Debin, Liu Jiyu, Yue Zengcun. Action laws and application effect of enhanced oil recovery by adjustable-mobility polymer flooding [J]. Acta Petrolei Sinica, 2018, 39(2): 189-200,246.
[5]	Tan Fengqi, Xu Changfu, Wang Xiaoguang, Chen Yukun, Cheng Hongjie, Zhang Jigang, Peng Shouchang. Differences in microscopic porous flow mechanisms of water flooding and polymer flooding for conglomerate reservoir [J]. Acta Petrolei Sinica, 2016, 37(11): 1414-1427.
[6]	Yang Fei, Guo Yongjun, Zhang Xinmin, Luo Pingya. Enhanced oil recovery technology of alkaline/surfactant/hydrophobically associating polyacrylamide flooding after polymer flooding [J]. ACTA PETROLEI SINICA, 2014, 35(5): 908-913.
[7]	Zhang Jicheng, Jiang Zhenhai, Lin Li, Wei Jiancheng. Calculation method of recoverable reserves in polymer flooding field [J]. ACTA PETROLEI SINICA, 2014, 35(4): 725-732.
[8]	Cheng Jiecheng, Wu Junzheng, Hu Junqing. Key theories and technologies for enhanced oil recovery of alkaline/surfactant/polymer flooding [J]. ACTA PETROLEI SINICA, 2014, 35(2): 310-318.
[9]	Le Jianjun, Liu Fang, Zhang Jiyuan, Bai Lulu, Wang Rui, Liu Xiaobo, Hou Zhaowei, Wu Xiaolin. A field test of activation indigenous microorganism for microbial enhanced oil recovery in reservoir after polymer flooding [J]. ACTA PETROLEI SINICA, 2014, 35(1): 99-106.
[10]	LI Guanghui, ZHANG Guicai, GE Jijiang, ZHOU Shuai, LIU Yueliang. Coagulation effect of cationic microspheres with residual hydrolyzed polyacrylamide [J]. ACTA PETROLEI SINICA, 2013, 34(6): 1157-1162.
[11]	ZHANG Xiansong, SUN Fujie, HOU Jian, KANG Xiaodong, XIE Xiaoqing, JIANG Shanshan. Quantitative characterization of production indices for polymer flooding of offshore heavy oils [J]. Editorial office of ACTA PETROLEI SINICA, 2013, 34(4): 727-732.
[12]	WANG Yuming, WANG Jiaying, KANG Hongqing, SUN Qiang, CHAI Fangyuan, ZHAO Qiyue. Establishment and application of a prediction model for enhanced oil recovery in polymer flooding [J]. Editorial office of ACTA PETROLEI SINICA, 2013, 34(3): 513-517.
[13]	Yiqiang　SU Weiming　WANG Zhengjin　LIU Shaopeng　Lü Xiuqin　GUO Hu. The optimal adjustment moment of polymer flooding for different injection-production types in class Ⅱoil layers [J]. Editorial office of ACTA PETROLEI SINICA, 2012, 33(4): 647-652.
[14]	WANG Jing LIU Huiqing WANG Chaofeng PANG Haiyang. Discussions on some problems about the mathematical model of polymer flooding [J]. Editorial office of ACTA PETROLEI SINICA, 2011, 32(5): 857-861.
[15]	LIU He ZHU Huaijiang LUO Jianhui ZHAO Jinzhu FU Chengli YANG Jingbo. Extension rheology behaviors of polyacrylamide and its copolymer in aqueous solution [J]. Editorial office of ACTA PETROLEI SINICA, 2010, 31(5): 806-809.