| Citation: | Zhang Wei, Dai Jianwen, Wang Yahui, Tu Yi. Experimental study on EOR of offshore heavy oil reservoir in high-ultra-high water cut stage[J]. Bulletin of Geological Science and Technology, 2022, 41(3): 193-199. doi: 10.19509/j.cnki.dzkq.2022.0065
|
To explore the mechanism of enhancing the recovery degree of remaining oil in heavy oil reservoir with different liquid extraction methods in high and ultra-high water cut stage, a displacement experiment of heavy oil reservoirs in marine sandstone under different extraction methods and crude oil viscosity was designed.One dimensional displacement simulation experiment was carried out by constructing interior long core physics to study the effects of different liquid extraction methods and crude oil viscosity on EOR in high and ultra-high water cut stage.Then, the distribution of remaining oil under different water injection methods was studied by combining nuclear magnetic resonance imaging with T2 spectrum. The research shows that the recovery degree for the 100 mPa·s crude oil can be increased by about 11% compared with constant low-speed drive.Taking the water cut is more than 99% as a termination condition for displacement completion, the recovery degree of oil reservoir in high water cut stage is the highest through multiple amplitude control and liquid extraction. When it reaches ultra-high water cut stage for core low-speed water flooding, the core saturation showing in NMR image decreases obviously. With the progress of displacement, porosity component decreases gradually, that is, remaining oil decreases gradually.Compared withone large liquid extraction, multiple liquid extraction shows better effect on the production degree of different pore sizes than during the high water cut stage. Micropores, pores and mesopores are affected with different degrees, and the overall recovery degree is increased by 17.01%. The development of small and medium pores results in the increase of recovery degree by 13.31%, accounting for 78.2%of the increase range.In the ultra-high water cut stage, the dominant seepage channels are easily formed under the condition of both one large liquid extraction and multiple liquid extraction, and the oil recovery degree of multiple liquid extraction is 9.2% higher than that of one large liquid extraction. Under different liquid extraction methods, the medium pore makes main contribution to improve the recovery degree, accounting for 97.2% of the increase range, and the sweep degree of micro pore wave is the smallest. The research results indicate that multiple amplitude control and liquid extraction technology can provide technical support for EOR of heavy oil reservoir in high and ultra-high water cut stage.
| [1] |
李传亮, 王凤兰, 杜庆龙, 等. 砂岩油藏特高含水期的水驱特征[J]. 岩性油气藏, 2021, 33(5): 163-171. https://www.cnki.com.cn/Article/CJFDTOTAL-YANX202105016.htm
Li C L, Wang F L, Du Q L, et al. Water displacement rules of sandstone reservoirs at extra-high water-cut stage[J]. Lithologic Reservoirs, 2021, 33(5): 163-171(in Chinese with English abstract). https://www.cnki.com.cn/Article/CJFDTOTAL-YANX202105016.htm
|
| [2] |
Modaresghazani J, Moore R, Mehta S, et al. Investigation of the relative permeabilities in two-phase flow of heavy oil/water and three-phase flow of heavy oil/water/gas systems[J]. Journal of Petroleum Science and Engineering, 2019, 172: 681-689. doi: 10.1016/j.petrol.2018.08.053
|
| [3] |
Permadi P, Gustiawan E, Abdassah D. Water cresting and oil recovery by horizontal wells in the presence of impermeable streaks[J]. SPE, 1996: 35440.
|
| [4] |
Dou H, Guan C Z, Lian S J. The experimental studies of physical simulation of bottom water reservoirs with barrier and permeable interbred on horizontal well[J]. SPE, 1999: 55995.
|
| [5] |
刘佳, 程林松, 黄世军. 底水油藏水平井开发物理模拟实验研究[J]. 石油钻探技术, 2013, 41(1): 87-92. doi: 10.3969/j.issn.1001-0890.2013.01.017
Liu J, Cheng L S, Huang S J. Physical modeling and experiment for horizontal wells in bottom water reservoir[J]. Petroleum Drilling Techniques, 2013, 41(1): 87-92(in Chinese with English abstract). doi: 10.3969/j.issn.1001-0890.2013.01.017
|
| [6] |
张新旺, 郭和坤, 沈瑞, 等. 基于核磁共振技术水驱油剩余油分布评价[J]. 实验室研究与探索, 2017, 36(9): 17-21. doi: 10.3969/j.issn.1006-7167.2017.09.005
Zhang X W, Guo H K, Shen R, et al. Microscopic experimental study on water displacement oil based on nuclear magnetic resonance technology[J]. Research and Exploration in Laboratory, 2017, 36(9): 17-21(in Chinese with English abstract). doi: 10.3969/j.issn.1006-7167.2017.09.005
|
| [7] |
张吉磊, 罗宪波, 张运来, 等. 提高稠油底水油藏转注井注水效率研究[J]. 岩性油气藏, 2019, 31(4): 141-148. https://www.cnki.com.cn/Article/CJFDTOTAL-YANX201904015.htm
Zhang J L, Luo X B, Zhang Y L, et al. Improving water injection efficiency of transfer injection well in heavy oil bottom water reservoir[J]. Lithologic Reservoirs, 2019, 31(4): 141-148(in Chinese with English abstract). https://www.cnki.com.cn/Article/CJFDTOTAL-YANX201904015.htm
|
| [8] |
张伟, 曹仁义, 罗东红, 等. 南海珠江口盆地海相砂岩油藏高倍数水驱驱替特征[J]. 油气地质与采收率, 2018, 25(2): 64-71. https://www.cnki.com.cn/Article/CJFDTOTAL-YQCS201802010.htm
Zhang W, Cao R Y, Luo D H, et al. Displacement characteristics of high-multiple water drive in marine sandstone reservoirs in the Pearl River Mouth Basin, South China Sea[J]. Petroleum Geology and Recovery Efficiency, 2018, 25(2): 64-71(in Chinese with English abstract). https://www.cnki.com.cn/Article/CJFDTOTAL-YQCS201802010.htm
|
| [9] |
张运来, 陈建波, 周海燕, 等. 海上底水油藏水平井水驱波及系数定量表征[J]. 岩性油气藏, 2020, 32(6): 146-153. https://www.cnki.com.cn/Article/CJFDTOTAL-YANX202006014.htm
Zhang Y L, Chen J B, Zhou H Y, et al. Quantitative characterization of sweep coefficient of water drive in horizontal well for offshore bottom water reservoir[J]. Lithologic Reservoirs, 2020, 32(6): 146-153(in Chinese with English abstract). https://www.cnki.com.cn/Article/CJFDTOTAL-YANX202006014.htm
|
| [10] |
许胜洋. 水驱砂岩油藏提液改善开发效果机理研究[D]. 河北秦皇岛: 燕山大学, 2011.
Xu S Y. Study on mechanism of using enhanced liquid to improve development effect in water flooding sandstone reservoirs[D]. Qinghuangdao Hebei: Yanshan University, 2011(in Chinese with English abstract).
|
| [11] |
欧阳传湘, 崔连云, 欧阳静芸, 等. 底水油藏中高含水期提液可行性研究[J]. 石油地质与工程, 2009, 23(2): 113-115. doi: 10.3969/j.issn.1673-8217.2009.02.036
Ouyang C X, Cui L Y, Ouyang J Y, et al. Feasibility study on liquid extraction in middle and high water cut stage of bottom water reservoir[J]. Petroleum Geology and Engineering, 2009, 23(2): 113-115(in Chinese with English abstract). doi: 10.3969/j.issn.1673-8217.2009.02.036
|
| [12] |
欧映辰, 杨志. 番禺4-2油田调整井出砂预测与防砂设计研究[J]. 广东化工, 2018, 45(16): 171-172. doi: 10.3969/j.issn.1007-1865.2018.16.076
Ou Y C, Yang Z. Sand prediction and sand control design for adjustment wells in Panyu 4-2 Oilfield[J]. Guangdong Chemical Industry, 2018, 45(16): 171-172(in Chinese with English abstract). doi: 10.3969/j.issn.1007-1865.2018.16.076
|
| [13] |
王伟, 宋渊娟, 黄静, 等. 利用高压压汞实验研究致密砂岩孔喉结构分形特征[J]. 地质科技通报, 2021, 40(4): 22-30, 48. doi: 10.19509/j.cnki.dzkq.2021.0402
Wang W, Song Y J, Huang J, et al. Fractal characteristics of pore-throat structure in tight sandstones using high-pressure mercury intrusion porosimetry[J]. Bulletin of Geological Science and Technology, 2021, 40(4): 22-30, 48(in Chinese with English abstract). doi: 10.19509/j.cnki.dzkq.2021.0402
|
| [14] |
张莉, 岳湘安, 王友启. 特高含水后期提高采收率物理模拟实验[J]. 石油钻采工艺, 2020, 42(3): 363-368. https://www.cnki.com.cn/Article/CJFDTOTAL-SYZC202003021.htm
Zhang L, Yue X A, Wang Y Q. Physical simulation experimental study on the enhanced oil recovery in the late stage of ultra-high water cut[J]. Oil Drilling & Production Technology, 2020, 42(3): 363-368(in Chinese with English abstract). https://www.cnki.com.cn/Article/CJFDTOTAL-SYZC202003021.htm
|
| [15] |
刘彦锋, 张文彪, 段太忠等. 深度学习油气藏地质建模研究进展[J]. 地质科技通报, 2021, 40(4): 235-241. doi: 10.19509/j.cnki.dzkq.2021.0417
Liu Y F, Zhang W B, Duan T Z, et al. Progress of deep learning in oil and gas reservoir geological modeling[J]. Bulletin of Geological Science and Technology, 2021, 40(4): 235-241(in Chinese with English abstract). doi: 10.19509/j.cnki.dzkq.2021.0417
|
| [16] |
朱伟军. 低渗透油藏中高含水期剩余油分布及挖潜研究[D]. 西安: 西安石油大学, 2013.
Zhu W J. A study of low permeability reservoir remaining oil distribution and potential tapping in medium and high water cut period[D]. Xi'an: Xi'an Shiyou University, 2013(in Chinese with English abstract).
|
| [17] |
余保海, 李俊, 黄琛. 低渗砂岩油藏高含水期提液可行性研究[J]. 化工管理, 2015, 377(18): 12-13. doi: 10.3969/j.issn.1008-4800.2015.18.010
Yu B H, Li J, Huang C. Feasibility study on liquid extraction in high water cut stage of low permeability sandstone reservoir[J]. Chemical Management, 2015, 377(18): 12-13(in Chinese with English abstract). doi: 10.3969/j.issn.1008-4800.2015.18.010
|
| [18] |
刘晨, 张金庆, 周文胜, 等. 海上高含水油田群液量优化模型的建立及应用[J]. 中国海上油气, 2016, 28(6): 46-52. https://www.cnki.com.cn/Article/CJFDTOTAL-ZHSD201606008.htm
Liu C, Zhang J Q, Zhou W S, et al. Modeling of liquid production optimization in high water cut offshore oilfield group and its application[J]. China Offshore Oil and Gas, 2016, 28(6): 46-52(in Chinese with English abstract). https://www.cnki.com.cn/Article/CJFDTOTAL-ZHSD201606008.htm
|
| [19] |
李宜强, 张津, 潘登, 等. 高含水期微观剩余油赋存规律: 以大港油田小集区块和港西区块为例[J]. 新疆石油地质, 2021, 42(4): 444-449. https://www.cnki.com.cn/Article/CJFDTOTAL-XJSD202104008.htm
Li Y Q, Zhang J, Pan D, et al. Occurrence laws of microscopic remaining oil in high water-cut reservoirs: A case study on blocks Xiaoji and Gangxi in Dagang Oilfield[J]. Xinjiang Petroleum Geology, 2021, 42(4): 444-449(in Chinese with English abstract). https://www.cnki.com.cn/Article/CJFDTOTAL-XJSD202104008.htm
|
| [20] |
曾羽佳, 欧阳传湘, 曾庆伟, 等. 超低界面张力体系对低渗岩心非线性渗流规律的影响[J]. 地质科技通报, 2021, 40(5): 307-315. doi: 10.19509/j.cnki.dzkq.2021.0027
Zeng Y J, Ouyang C X, Zeng Q W, et al. Influence of ultra-low interfacial tension system on nonlinear seepage law of low permeability core[J]. Bulletin of Geological Science and Technology, 2021, 40(5): 307-315(in Chinese with English abstract). doi: 10.19509/j.cnki.dzkq.2021.0027
|
| [21] |
周凤军, 陈建波, 葛丽珍, 等. 锦州油田中高含水期聚合物驱特征分析及改善措施[J]. 石油地质与工程, 2014, 28(1): 84-86, 90. doi: 10.3969/j.issn.1673-8217.2014.01.025
Zhou F J, Chen J B, Ge L J, et al. Characteristics analysis and improvement measures of polymer flooding in middle and high water cut stage of Jinzhou Oilfield[J]. Petroleum Geology and Engineering, 2014, 28(1): 84-86, 90(in Chinese with English abstract). doi: 10.3969/j.issn.1673-8217.2014.01.025
|
| [22] |
Clementz D M. Clay stabilization in sandstones through adsorption of petroleum heavy ends[J]. Journal of Petroleum Technology, 1977, 29(9): 1061-1066. doi: 10.2118/6217-PA
|
| [23] |
Qi Z, Wang Y, He H, et al. Wettability alteration of the quartz surface in the presence of metal cations[J]. Energy & Fuels, 2013, 27(12): 54-59.
|
Copyright © 2010Editorial Department of Bulletin of Geological Science and Technology
Supported by:
Beijing Renhe Information Technology Co., Ltd.
DownLoad:
