表面活性剂协同低盐度水驱提高致密油藏采收率研究

李婷; 谢安; 倪振; 刘永萍

doi:10.3969/j.issn.1006-6535.2023.01.016

特种油气藏 >

2023 , Vol. 30 >Issue 1: 114 - 119

DOI: https://doi.org/10.3969/j.issn.1006-6535.2023.01.016

油藏工程

表面活性剂协同低盐度水驱提高致密油藏采收率研究

李婷 ,
谢安 ,
倪振 ,
刘永萍

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中国石油新疆油田分公司,新疆克拉玛依 834000

李婷(1987—),女,高级工程师,2009年毕业于长江大学勘查技术与工程专业,现主要从事油气田开发研究工作。

收稿日期: 2022-03-21

修回日期: 2022-09-10

网络出版日期: 2023-03-24

基金资助

中国石油重大科技专项“新疆油田已开发水驱油藏‘二三结合’提高采收率技术研究与应用”(2017E-04-06)

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Study on Enhancing the Oil Recovery of Tight Oil Reservoirs by Surfactant Combined with Low-Salinity Water Flooding

Li Ting ,
Xie An ,
Ni Zhen ,
Liu Yongping

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PetroChina Xinjiang Oilfield Company, Karamay, Xinjiang 834000, China

Received date: 2022-03-21

Revised date: 2022-09-10

Online published: 2023-03-24

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摘要

为探究表面活性剂协同低盐度水驱提高致密油藏采收率机理,以新疆油田某致密砂岩油藏为研究对象,通过自制实验装置,研究了不同注入速度、溶剂配比等条件下,低盐度水驱、表面活性剂驱及二者协同作用对采收率的影响。结果表明:表面活性剂协同低盐度水驱能有效发挥协同优势,提高致密油藏采收率;注入速度过低时表面活性剂能有效改造孔喉界面,但水驱能量不足,注入速度过高时易诱发油水界面锥进,且表面活性剂改造孔喉界面效果有限,导致驱油效率随注入速度的升高先升高后降低;注入速度为0.3 mL/min条件下,低盐度水(NaCl质量分数为0.1%)和十二烷基苯磺酸钠阴离子型表面活性剂(质量分数为0.4%)按7∶3质量配比,驱油效率最高,可达89.79%,相较于单流体驱至少提高了29.83%。现场应用表明:致密油藏单井产量严重衰减后,利用表面活性剂协同低盐度水驱,能有效提高采收率,月产量提升约47%。研究成果可为同类致密油藏高效开发提供借鉴。

关键词： 低盐度水; 表面活性剂; 致密油藏; 提高采收率; 协同作用

本文引用格式

李婷 , 谢安 , 倪振 , 刘永萍 . 表面活性剂协同低盐度水驱提高致密油藏采收率研究[J]. 特种油气藏, 2023 , 30(1) : 114 -119 . DOI: 10.3969/j.issn.1006-6535.2023.01.016

Abstract

To explore the mechanism of enhancing the oil recovery of tight oil reservoirs by surfactant combined with low-salinity water flooding, in a study case of a tight sandstone reservoir in Xinjiang Oilfield, the effects of low-salinity water flooding, surfactant flooding and their combination on the recovery efficiency at different injection rates and solvent ratios are studied with self-made test equipment. The result shows: The surfactant combined with low-salinity water flooding can effectively play the synergistic advantages to improve the recovery efficiency of tight oil reservoirs. When the injection rate is too low, the surfactant can effectively modify the pore throat interface, but the energy of water flooding is insufficient. When the injection rate is too high, it is easy to induce the coning of oil-water interface, and the effect of surfactant on modifying the pore throat interface is limited, leading to oil displacement efficiency increasing first and then decreasing with the increase of injection rate. At the injection rate of 0.3 mL/min, the highest oil displacement efficiency of 89.79% is achieved with a 7∶3 mass ratio of low-salinity water (0.1% NaCl mass fraction) to sodium dodecyl-benzene sulfonate anionic surfactant (0.4% mass fraction), which is at least 29.83% higher than that of single-fluid flooding. The field application shows that the surfactant combined with low-salinity water flooding can effectively enhance oil recovery and increase monthly production by about 47% in tight reservoirs where the production is severely depleted per well. The study results can be referred for efficient development of similar tight oil reservoirs.

Key words： low-salinity water; surfactant; tight oil reservoir; enhanced oil recovery; synergy

参考文献

[1] 马铨峥,杨胜来,杨龙,等.准噶尔盆地吉木萨尔凹陷芦草沟组致密储层微观孔隙特征[J].大庆石油地质与开发,2020,39(6):13-20.
MA Quanzheng,YANG Shenglai,YANG Long,et al.Characteristics of the micro-pore in Lucaogou-Formation tight reservoir of Jimsar Sag,Junggar Basin[J].Petroleum Geology & Oilfield Development in Daqing,2020,39(6):13-20.
[2] 敖科,辛骅志,陆峰,等.致密油藏水平井动态产能剖面化学示踪监测方法及应用[J].钻采工艺,2021,44(4):77-80.
AO Ke,XIN Huazhi,LU Feng,et al.Chemical tracing technique in monitoring of dynamic production profile of a horizontal well in tight oil reservoirs and its application[J].Drilling & Production Technology,2021,44(4):77-80.
[3] 王亚东,余继峰,刘天娇,等.东濮凹陷上二叠统致密砂岩储层成岩相及孔隙演化[J].东北石油大学学报,2022,46(2):79-91.
WANG Yadong,YU Jifeng,LIU Tianjiao,et al.Diagenetic facies and pore evolution of Upper Permian tight sandstone reservoirs in Dongpu Depression[J].Journal of Northeast Petroleum University,2022,46(2):79-91.
[4] 林魂,宋西翔,罗超,等.致密砂岩油藏裂缝与基质间渗吸特征及主控因素[J].油气地质与采收率,2022,29(5):133-140.
LIN Hun,SONG Xixiang,LUO Chao,et al.Dynamic imbibition characteristics between fractures and matrix in tight sandstone reservoirs and main controlling factor[J].Petroleum Geology and Recovery Efficiency,2022,29(5):133-140.
[5] 丁彬,熊春明,耿向飞,等.致密油纳米流体增渗驱油体系特征及提高采收率机理[J].石油勘探与开发,2020,47(4):756-764.
DING Bin,XIONG Chunming,GENG Xiangfei,et al.Characteristtics and EOR mechanisms of nanofluids permeation flooding for tight oil[J].Petroleum Exploration and Development,2020,47(4):756-764.
[6] 王香增,杨红,王伟,等.延长油田低渗透油藏提高采收率技术进展[J].油气地质与采收率,2022,29(4):69-75.
WANG Xiangzeng,YANG Hong,WANG Wei,et al.Technical advancements in enhanced oil recovery in low permeability reservoirs of Yanchang Oilfield[J].Petroleum Geology and Recovery Efficiency,2022,29(4):69-75.
[7] 魏兵,刘江,张翔,等.致密油藏提高采收率方法与理论研究进展[J].西南石油大学学报(自然科学版),2021,43(1):91-102.
WEI Bing,LIU Jiang,ZHANG Xiang,et al.Advances of enhanced oil recovery method and theory in tight reservoirs[J].Journal of Southwest Petroleum University(Science & Technology Edition),2021,43(1):91-102.
[8] TANGESTANI E,VAFAIE S M,SHADMAN M M,et al.Performance of low-salinity water flooding for enhanced oil recovery improved by SiO₂ nanoparticles[J].Petroleum Science,2019,16(2):131-139.
[9] 陈斌,曹小华,周亮,等.适用于高温高盐低渗砂岩油藏的表面活性剂驱油体系[J].钻采工艺,2021,44(3):87-91.
CHEN Bin,CAO Xiaohua,ZHOU Liang,et al.Surfactant flooding system for high temperature and high salinity of low permeability sandstone reservoirs[J].Drilling & Production Technology,2021,44(3):87-91.
[10] BEHNAZ S,AMIN A,BIZHAN H,et al.Application of a novel natural surfactant extracted from avena sativa for enhanced oil recovery during low salinity water flooding:synergism of natural surfactant with different salts[J].Journal of Molecular Liquids,2022,362(15):119693.
[11] AMIR H J,MOBEEN F.Impact of salinity on fluid/fluid and rock/fluid interactions in enhanced oil recovery by hybrid low salinity water and surfactant flooding from fractured porous media[J].Fuel,2022,329(1):125426.
[12] MOHAMMADI S,KORD S,MOGHADASI J.The hybrid impact of modified low salinity water and anionic surfactant on oil expulsion from carbonate rocks:a dynamic approach[J].Journal of Molecular Liquids,2019,281(1):352-364.
[13] 唐建信,徐斌,成田田,等.新型低矿化度活性水驱提高低渗砂岩油藏采收率技术[J].断块油气田,2020,27(6):789-793.
TANG Jianxin,XU Bin,CHENG Tiantian,et al.A new technology of active water flooding with low salinity to improve recovery of low permeability sandstone reservoir[J].Fault-Block Oil & Gas Field,2020,27(6):789-793.
[14] ZHAO Yang,YIN Shize,RANDALL S S.Enhancing heavy-oil-recovery efficiency by combining low-salinity-water and polymer flooding[J].SPE Journal,2020,26(3):1535-1551.
[15] 苏阳.准噶尔盆地吉木萨尔凹陷芦草沟组致密油运聚过程及主控因素[D].青岛:中国石油大学(华东),2019.
SU Yang.Tight oil migration and accumulation process and the main controlling factors in Lucaogou-Formation tight reservoir of Jimsar Sag,Junggar Basin[D].Qingdao:China University of Petroleum(East China),2019.
[16] 李晓骁,任晓娟,田进,等.定边X区长8储层孔隙特征及其对油水流动的影响[J].大庆石油地质与开发,2020,39(1):41-49.
LI Xiaoxiao,REN Xiaojuan,TIAN Jin,et al.Pore characteristics and their influences on the water-oil flow for Reservoir Chang 8 in Dingbian Block X[J].Petroleum Geology & Oilfield Development in Daqing,2020,39(1):41-49.
[17] 于友,魏建光,张宝忠,等.低渗透油藏常规水驱与二氧化碳驱井距界限研究[J].特种油气藏,2021,28(2):120-125.
YU You,WEI Jianguang,ZHANG Baozhong,et al.Study on well spacing limit for conventional water flooding and carbon dioxide flooding in low-permeability reservoirs[J].Special Oil & Gas Reservoirs,2021,28(2):120-125.
[18] 刘博峰,张庆九,陈鑫,等.致密油储层压裂液渗吸特征及水锁损害评价[J].断块油气田,2021,28(3):318-322.
LIU Bofeng,ZHANG Qingjiu,CHEN Xin,et al.Imbibition characteristics of fracturing fluid in the tight oil reservoir and water lock damage evaluation[J].Fault-Block Oil & Gas Field,2021,28(3):318-322.
[19] ALHURAISHAWY A K,BAI Baojun,WEI Mingzhen,et al.Mineral dissolution and fine migration effect on oil recovery factor by low-salinity water flooding in low-permeability sandstone reservoir[J].Fuel,2018,220(15):898-907.
[20] SHI Yue,MILLER Chamml,MOHANTY Kishore.Surfactant-aided low-Salinity waterflooding for low-temperature carbonate reservoirs[J].SPE Journal,2021,26(4):1-17.
[21] 李晓骁,岳湘安,闫荣杰,等.稠油油藏表面活性剂辅助CO₂驱油效果及主控性能[J].油气地质与采收率,2021,28(6):94-100.
LI Xiaoxiao,YUE Xiang′an,YAN Rongjie,et al.Study on effect of surfactant-assisted CO₂ and dominating behavior of surfactant in heavy oil reservoirs[J].Petroleum Geology and Recovery Efficiency,2021,28(6):94-100.

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