氮气对塔河油田原油轻质组分抽提作用实验与评价

doi:10.7623/syxb202103007

石油学报 ›› 2021, Vol. 42 ›› Issue (3): 341-349.DOI: 10.7623/syxb202103007

氮气对塔河油田原油轻质组分抽提作用实验与评价

宋传真^1,2, 赵海宁³, 张慧^1,2

1. 中国石油化工股份有限公司石油勘探开发研究院北京 100083;
2. 中国石油化工集团公司海相油气藏开发重点实验室北京 100083;
3. 中国石油大学(北京)安全与海洋工程学院北京 102249

收稿日期:2020-04-24 修回日期:2020-12-17 出版日期:2021-03-25 发布日期:2021-04-09
通讯作者: 宋传真,女,1974年9月生,1998年获成都理工学院学士学位,2001年获成都理工学院硕士学位,现为中国石油化工股份有限公司石油勘探开发研究院技术专家、高级工程师,主要从事特殊油气藏开发研究工作。
作者简介:宋传真,女,1974年9月生,1998年获成都理工学院学士学位,2001年获成都理工学院硕士学位,现为中国石油化工股份有限公司石油勘探开发研究院技术专家、高级工程师,主要从事特殊油气藏开发研究工作。Email:songfax.syky@sinopec.com
基金资助:
国家科技重大专项“缝洞型油藏注气提高采收率技术”（2016ZX05014-004）和国家自然科学基金青年科学基金项目（No.51604284）资助。

Experiment and evaluation of extraction effect of nitrogen on light components of crude oil in Tahe oilfield

Song Chuanzhen^1,2, Zhao Haining³, Zhang Hui^1,2

1. Sinopec Petroleum Exploration & Production Research Institute, Beijing 100083, China;
2. Sinopec Key Laboratory of Marine Oil & Gas Reservoirs Production, Beijing 100083, China;
3. College of Safety and Ocean Engineering, China University of Petroleum, Beijing 102249, China

Received:2020-04-24 Revised:2020-12-17 Online:2021-03-25 Published:2021-04-09

摘要/Abstract

摘要： 采用塔河油田缝洞型油藏稀油和常规稠油两种代表性油样，通过开展向前多次接触相平衡实验模拟蒸发气驱过程、向后多次接触相平衡实验模拟凝析气驱过程，研究了氮气与塔河油田原油在高温高压条件下的相态变化，明确了氮气与地层原油充分接触混合后地层流体的气液组分变化规律，提出了抽提指数的计算表达式，定量评价了氮气在高温高压条件下对原油轻组分的抽提效果，深化了注氮气提高采收率作用机理的认识。研究结果表明，塔河油田油藏条件（压力>65 MPa、温度>415 K）下，原油中轻质组分（C₁—C₅）经过5次接触后的流失率高达94%~100%，氮气对原油有较强的抽提作用；向前接触实验中，随接触次数增加，抽提作用越来越强，抽提指数越来越大，同次接触氮气对稀油的抽提指数是稠油的5倍以上；注入气中加入20%的CO₂后对原油中轻质组分的抽提效果增强不显著，抽提指数仅小幅变化。两种气体与塔河油田稀油在多次向前接触后展现出了近混相的趋势；向后接触实验表明，首次接触抽提作用最大，抽提指数随着接触次数的增加逐渐减小至0，较之向前接触明显偏小。

关键词: 多次接触, 相平衡, 注氮气, 塔河油田, 抽提指数

Abstract: Using two representative oil samples of the light crude oil and conventional heavy oil from the Tahe fractured-cavity reservoir, the forward multiple-contact and the backward multiple-contact phase equilibrium experiment are performed to simulate the process of evaporative gas flooding and condensate gas flooding, respectively. On this basis, this paper investigates the phase behavior changes of nitrogen (N₂) and the Tahe oil under high temperature and high pressure, clarifies the changing rules of gas-liquid composition of the formation fluid sufficiently contacted and mixed with N₂, proposes the parameter ‘Extraction Indicator’ and its calculating formula, quantitatively evaluates the extraction effect of N₂ on the light components of crude oil under high temperatures and high pressures, and deepens the understanding of the mechanism of enhanced oil recovery by N₂ injection. The study shows that under Tahe reservoir conditions (pressure>65 MPa, temperature>415 K), up to 94% -100% of light components (C₁ to C₅) is extracted from the oil phase after 5 contacts with nitrogen, indicating that N₂ has a strong extraction effect on crude oil. In the forward contact experiment, with the increase in contact times, the extraction effect is getting stronger and the extraction indicator becomes larger. The corresponding extraction indicator of N₂ to thin oil is more than 5 times that of N₂ to heavy oil under the same contact condition. After adding 20% CO₂ to the injected nitrogen, the extraction effect on light components in oil is not significantly enhanced, and the extraction indicator only changes slightly. The near-miscible tendency is observed for both the N₂ and N₂-CO₂ injectant during forward contacting with the Tahe light oil for multiple times; the backward contact experiment shows that the extraction effect of the first contact is the strongest, and the extraction indicator is gradually decreased to 0 with the incrase in contact times, which is sigificantly smaller as compared with the results of the forward contact experiment.

Key words: multiple-contact, phase equilibrium, nitrogen injection, Tahe oilfield, extraction indicator

中图分类号:

TE357.7

宋传真, 赵海宁, 张慧. 氮气对塔河油田原油轻质组分抽提作用实验与评价[J]. 石油学报, 2021, 42(3): 341-349.

Song Chuanzhen, Zhao Haining, Zhang Hui. Experiment and evaluation of extraction effect of nitrogen on light components of crude oil in Tahe oilfield[J]. Acta Petrolei Sinica, 2021, 42(3): 341-349.

参考文献

[1] 袁向春,刘中春. 碳酸盐岩缝洞型油藏提高采收率技术[M].青岛:中国石油大学出版社,2017:80.
YUAN Xiangchun,LIU Zhongchun.EOR Technology of paleokarst carbonate reservoirs[M].Qingdao:China University of Petroleum Press,2017:80.
[2] 傅春华,陈姝兰,代士郁.黄16井区氮气-水交替非混相驱先导试验研究[J].大庆石油地质与开发,2004,23(1):61-63.
FU Chunhua,CHEN Shulan,Dai Shiyu.Study on the pilot test of N₂-water alternative injection unmiscible drive in Huang 16 area[J].Petroleum Geology & Oilfield Development in Daqing,2004,23(1):61-63.
[3] 张艳玉,王康月,李洪君,等.气顶油藏顶部注氮气重力驱数值模拟研究[J].中国石油大学学报:自然科学版,2006,30(4):58-62.
ZHANG Yanyu,WANG Kangyue,LI Hongjun,et al.Study of numerical simulation for gravity drive of crestal nitrogen injection in gas-cap reservoir[J].Journal of China University of Petroleum:Edition of Natural Science,2006,30(4):58-62.
[4] 黄海,刘易非,王卫娜,等.鄂尔多斯盆地低渗透油藏水氮气交注非混相驱影响因素研究[J].西北大学学报:自然科学版,2012,42(6):985-988.
HUANG Hai,LIU Yifei,WANG Weina,et al.The influences of immiscible N₂ WAG flooding in low permeability reservoir of Ordos Basin[J].Journal of Northwest University:Natural Science Edition,2012,42(6):985-988.
[5] 曹鹏,朱永峰,戴传瑞,等.强底水白云岩油藏注氮气非混相驱数值模拟[J].断块油气田,2016,23(2):202-205.
CAO Peng,ZHU Yongfeng,DAI Chuanrui,et al.Numerical simulation of immiscible nitrogen flooding for dolomite reservoirs with strong bottom water[J].Fault-Block Oil and Gas Field,2016,23(2):202-205.
[6] WU Xingru,LING Kegang,LIU Dexin.Nitrogen injection experience to development gas and gas condensate fields in Rocky Mountains[C]//International Petroleum Technology Conference.Beijing,China:IPTC,2013.
[7] 白凤瀚,申友青,孟庆春,等.雁翎油田注氮气提高采收率现场试验[J].石油学报,1998,19(4):61-68.
BAI Fenghan,SHEN Youqing,MENG Qingchun,et al.Reservoir engineering research of the nitrogen injection pilot in Yanling oil field[J].Acta Petrolei Sinica,1998,19(4):61-68.
[8] 胡伟,吕成远,王锐,等.水驱转CO₂混相驱渗流机理及传质特征[J].石油学报,2018,39(2):201-207.
HU Wei,LÜ Chengyuan,WANG Rui,et al.Porous flow mechanisms and mass transfer characteristics of CO₂ miscible flooding after water flooding[J].Acta Petrolei Sinica,2018,39(2):201-207.
[9] 韩海水,李实,姚小琪,等.基于摩尔密度的原油-CO₂体系膨胀能力预测方法[J].石油学报,2018,39(4):456-462.
HAN Haishui,LI Shi,YAO Xiaoqi,et al.Swelling ability prediction method of crude oil-CO₂ system based on molar density[J].Acta Petrolei Sinica,2018,39(4):456-462.
[10] MOSES P L,WILSON K.Phase equilibrium considerations in using nitrogen for improved recovery from retrograde condensate reservoirs[J].Journal of Petroleum Technology,1981,33(2):256-262.
[11] ALCOCER C F,MENZIE D E.Enhanced oil recovery by nitrogen injection:the effect of increased temperature and the amount of gas in solution[R].SPE 12709,1984.
[12] SAYEGH S G,WANG S T,NAJMAN J.Multiple contact phase behaviour in the displacement of crude oil with nitrogen and enriched nitrogen[J].Journal of Canadian Petroleum Technology,1987,26(6):31-39.
[13] ABRISHAMI Y,HATAMIAN H.Phase behaviour of fluids in multiple contact processes with CO₂,N₂ and their mixture[R].SPE 36295,1996.
[14] 李向良.氮气对牛庄油田牛20断块地层油相态特征的影响[J].油气地质与采收率,2006,13(2):88-90.
LI Xiangliang.Effect of N₂ on phase behavior of formation crude in Niu20 fault block of Niuzhuang oilfield[J].Petroleum Geology and Recovery Efficiency,2006,13(2):88-90.
[15] 刘中春.塔河油田缝洞型碳酸盐岩油藏提高采收率技术途径[J].油气地质与采收率,2012,19(6):66-68.
LIU Zhongchun.Enhanced oil recovery in Tahe karstic/fractured carbonate reservoir[J].Petroleum Geology and Recovery Efficiency,2012,19(6):66-68.
[16] 惠健,刘学利,汪洋,等.塔河油田缝洞型油藏注气替油机理研究[J].钻采工艺,2013,36(2):55-57.
HUI Jian,LIU Xueli,WANG Yang,et al.Mechanism research on gas injection to displace the oil remaining in fractured-vuggy reservoirs of Tahe oilfield[J].Drilling & Production Technology,2013,36(2):55-57.
[17] 惠健,刘学利,汪洋,等.塔河油田缝洞型油藏单井注氮气采油机理及实践[J].新疆石油地质,2015,36(1):75-77.
HUI Jian,LIU Xueli,WANG Yang,et al.Mechanism and practice of nitrogen injection for EOR in fractured-vuggy carbonate reservoir in Tahe oilfield,Tarim Basin[J].Xinjiang Petroleum Geology,2015,36(1):75-77.
[18] 袁飞宇,张世亮,海涛,等.缝洞型碳酸盐岩油藏注氮气采油实践及认识[J].石油天然气学报(江汉石油学院学报),2014,36(12):165-168.
YUAN Feiyu,ZHANG Shiliang,HAI Tao,et al.Practice and understanding of nitrogen injection recovery in fractured-vuggy carbonate reservoir[J].Journal of Oil and Gas Technology (Journal of Jianghan Petroleum Institute),2014,36(12):165-168.
[19] 宋传真,朱桂良,刘中春.缝洞型油藏氮气扩散系数测定及影响因素[J].西南石油大学学报:自然科学版,2020,42(4):95-103.
SONG Chuanzhen,ZHU Guiliang,LIU Zhongchun.Measurement and effecting factors of nitrogen diffusion coefficient in vug-fracture reservoir[J].Journal of Southwest Petroleum University:Science & Technology Edition,2020,42(4):95-103.
[20] ZICK A A.A combined condensing/vaporizing mechanism in the displacement of oil by enriched gases[R].SPE 15493,1986.
[21] 翟晓先,云露.塔里木盆地塔河大型油田地质特征及勘探思路回顾[J].石油与天然气地质,2008,29(5):565-573.
ZHAI Xiaoxian,YUN Lu.Geology of giant Tahe oilfield and a review of exploration thinking in the Tarim Basin[J].Oil & Gas Geology,2008,29(5):565-573.
[22] 窦之林.塔河油田碳酸盐岩缝洞型油藏开发技术[M].北京:石油工业出版社,2012:6.
DOU Zhilin.Development technology of carbonate fracture-cave type reservoir in Tahe oilfield[M].Beijing:Petroleum Industry Press,2012:6.
[23] 焦方正,窦之林.塔河碳酸盐岩缝洞型油藏开发研究与实践[M].北京:石油工业出版社,2008:6.
JIAO Fangzheng,DOU Zhilin.Development research and practice on fracture-vuggy carbonate reservoirs in Tahe oil field[M].Beijing:Petroleum Industry Press,2008:6.
[24] JAUBERT J N,NEAU E,AVAULLEE L,et al.Characterization of heavy oils.3.Prediction of gas injection behavior:swelling test,multicontact test,multiple-contact minimum miscibility pressure,and multiple-contact minimum miscibility enrichment[J].Industrial & Engineering Chemistry Research,1995,34(11):4016-4032.
[25] 彭志刚,张健,冯茜,等.环境响应型聚合物对水泥石抗CO₂腐蚀性能的影响[J].石油学报,2018,39(6):703-711.
PENG Zhigang,ZHANG Jian,FENG Qian,et al.Effects of environmental responsive polymer on the anti-CO₂ corrosion performance of set cement[J].Acta Petrolei Sinica,2018,39(6):703-711.
[26] 赵垒,闫怡飞,王鹏,等.气井生产过程中碳钢管柱CO₂腐蚀规律[J].石油学报,2019,40(2):232-239.
ZHAO Lei,YAN Yifei,WANG Peng,et al.CO₂ corrosion law of carbon steel tubing string in the production process of gas well[J].Acta Petrolei Sinica,2019,40(2):232-239.

氮气对塔河油田原油轻质组分抽提作用实验与评价

Experiment and evaluation of extraction effect of nitrogen on light components of crude oil in Tahe oilfield

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