氮气吞吐采油技术在三低砂岩油藏的应用研究
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摘要
为了改善牛圈湖"低渗、低压、低流度"三低砂岩油藏水驱采油后期油井低产液、高含水井比例高和开发效果差的现状。创新性地引入氮气吞吐提高油井采收率的思路,基于对三低砂岩油藏注氮气吞吐的机理,通过数值模拟手段对注气参数进行优选对比分析,得到了合理的氮气吞吐参数,并在现场进行了应用。结果表明,氮气吞吐采油技术应用后,油井增油效果显著,累计增油5 050 t,为氮气吞吐作为注水驱油的有效接替和补充措施的规模推广奠定了基础。
In order to improve the low-yield liquid and high-water-bearing wells in the oil-flooding stage of the "low-permeability,low-pressure and low-flow" three-low sandstone reservoirs in Niujuan Lake,the current situation is high and the development effect is poor.Innovative introduction of nitrogen gas stimulation to improve oil well recovery.Based on the mechanism of nitrogen injection in three low sandstone reservoirs,the numerical simulation method is used to compare the gas injection parameters,and reasonable nitrogen throughput parameters are obtained.The application was carried out on site.The results showed that after the application of nitrogen gas stimulation and oil recovery technology,the oil well effect of the oil well was remarkable,and the cumulative oil increase was 5 050 t,which laid a foundation for the scale of nitrogen flooding as an effective replacement and supplementary measure for water flooding.
In order to improve the low-yield liquid and high-water-bearing wells in the oil-flooding stage of the "low-permeability,low-pressure and low-flow" three-low sandstone reservoirs in Niujuan Lake,the current situation is high and the development effect is poor.Innovative introduction of nitrogen gas stimulation to improve oil well recovery.Based on the mechanism of nitrogen injection in three low sandstone reservoirs,the numerical simulation method is used to compare the gas injection parameters,and reasonable nitrogen throughput parameters are obtained.The application was carried out on site.The results showed that after the application of nitrogen gas stimulation and oil recovery technology,the oil well effect of the oil well was remarkable,and the cumulative oil increase was 5 050 t,which laid a foundation for the scale of nitrogen flooding as an effective replacement and supplementary measure for water flooding.
引文
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[17] 王洋,蒋平,葛际江,等.井楼油田氮气辅助蒸汽吞吐机理实验研究[J].断块油气田,2013,20(5):667-670.Wang Yang,Jiang Ping,Ge Jijiang,et al.Laboratory study on mechanism of nitrogen-assisted steam stimulation in Jinglou oilfield[J].Fault-block Oil & Gas Field,2013,20(5):667-670.
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[19] 谷朋,倪伟.底水油藏高含水油井注氮气吞吐数值模拟研究[J].内江科技,2012,33(6):65,56.Guo Peng,Ni Wei.Numerical simulation of nitrogen injection and puff in high water cut oil wells in bottom water reservoir[J].Nei Jiang Ke Ji,2012,33(6):65,56.
[2] 王大钧.氮气和烟道气在油田开发中的应用[M].北京:石油工业出版社,1991.
[3] 王进安,曾贤辉,陈德斌,等.低渗透挥发性油藏注烃类气驱室内实验研究[J].断块油气田,2002(6):58-60,92-93.Wang Jin′an,Zeng Xianhui,Chen Debin,et al.Experiment study of Hydrocarbon gas injection in low permeability volatile reservoir[J].Fault-block Oil & Gas Field,2002(6):58-60,92-93.
[4] 杨峰,巩长明,陈大有,等.注氮气辅助蒸汽吞吐工艺增油效果影响因素研究[J].科学技术与工程,2013,13(11):3082-3085.Yang Feng,Gong Changming,Chen Dayou,et al.Factors influencing nitrogen injection auxiliary steam stimulation process increasing oil[J].Science Technology and Engineering,2013,13(11):3082-3085.
[5] 王高峰,胡永乐,宋新民,等.低渗透油藏气驱产量预测新方法[J].科学技术与工程,2013,13(30):8905-8911.Wang Gaofeng,Hu Yongle,Song Xinmin,et al.New theory of oil production prediction in gas flooding tight reservoirs[J].Science Technology and Engineering,2013,13(30):8905-8911.
[6] 王海平,刘应学.表面活性剂辅助氮气吞吐工艺技术[J].石油钻采工艺,2001(6):72-73,84.Wang Haiping,Liu Yingxue.Nitrogen soaking technology with surfactant assistant[J].Oil Drilling & Production Technology,2001(6):72-73,84.
[7] 阳晓燕,黄凯,马超,等.不同油藏条件下相渗曲线分析[J].科学技术与工程,2012,12(14):3340-3343.Yang Xiaoyan,Huang Kai,Ma Chao,et al.Variation of relative permeability curves in the different reservoir[J].Science Technology and Engineering,2012,12(14):3340-3343.
[8] 刘尧文,刘建仪.氮气的溶解及抽提效应对原油性质的影响[J].西安石油大学学报(自然科学版),2004(5):28-30,55.Liu Yaowen,Liu Jianyi.Effects of nitrogen dissolution and separating-out on the property of crude oil in nitrogen displacement[J].Journal of Xi′an Shiyou University(Natural Science Edition),2004(5):28-30,55.
[9] 陈荣灿,霍进,郭新和.稠油注蒸汽加氮气吞吐试验研究[J].特种油气藏,1999(3):59-64,70.Chen Rongcan,Huo Jin,Guo Xinhe.Experimental study on steam injection and nitrogen huff and puff of heavy oil[J].Special Oil & Gas Reservoirs,1999(3):59-64,70.
[10] 左青山,温鸿滨,芦维国,等.断块油田不同方式注氮气的研究与实践[J].钻采工艺,2007(5):42-43,52,166.Zuo Qingshan,Wen Hongbin,Lu Weiguo,et al.Research and application of nitrogen in jection by using different in jection means in fault block oil field[J].Drilling & Production Technology,2007(5):42-43,52,166.
[11] 陈会娟,孙晓飞,张艳玉.稠油油藏注氮气吞吐注采参数正交实验设计[J].特种油气藏,2012,19(5):63-65,154.Chen Huijuan,Sun Xiaofei,Zhang Yanyu.Orthogonal experimental design of injection and production parameters in nitrogen huff and puff in heavy oil reservoirs[J].Special Oil & Gas Reservoirs,2012,19(5):63-65,154.
[12] 陈叔阳,郭秀东,何龙,等.塔河油田碎屑岩油藏氮气泡沫吞吐提高采收率可行性研究[J].辽宁化工,2014,43(4):391-394.Chen Shuyang,Guo Xiudong,He Long,et al.Feasibility study on enhancing oil recovery of clastic rock reservoirs in Tahe oilfield by nitrogen foam huff and puff technology[J].Liaoning Chemical Industry,2014,43(4):391-394.
[13] 赵冰冰,张承洲,游津津,等.缝洞型油藏注氮气吞吐影响因素研究[J].长江大学学报(自然科学版),2014,11(31):160-161,172.Zhao Bingbing,Zhang Chengzhou,You Jinjin,et al.The influencing factors in nitrogen injection fracture-vuggy reservoirs[J].Journal of Yangtze University(Natural Science Edition),2014,11(31):160-161,172.
[14] 熊平,胡望水,卫小龙,等.SX火山岩油藏氮气吞吐选井方法[J].大庆石油地质与开发,2018,37(3):120-124.Xiong Ping,Hu Wangshui,Wei Xiaolong,et al.Well selection method for the nitrogen huff and puff in SX volcanic-rock oil reservoir[J].Petroleum Geology and Oilfield Development in Daqing,2018,37(3):120-124.
[15] 马铨峥,杨胜来,韩伟,等.准噶尔盆地吉木萨尔凹陷芦草沟组致密油储层氮气吞吐物理模拟实验研究[J].油气地质与采收率,2018,25(1):112-116.Ma Quanzheng,Yang Shenlai,Han Wei,et al.Experimental study on the physical simulation of N2 huff and puff of the tight oil reservoir in the Lucaogou Formation of Jimsar Sag,Junggar Basin[J].Petroleum Geology and Recovery Efficiency,2018,25(1):112-116.
[16] 阳哓燕,马超.三塘湖油田牛圈湖区块氮气吞吐室内实验[J].油气地球物理,2010,8(4):41-43.Yang Xiaoyan,Ma Chao.Laboratory experiment of nitrogen throughput in Niujuan lake block in Santanghu oilfield[J].Petroleum Geophysics,2010,8(4):41-43.
[17] 王洋,蒋平,葛际江,等.井楼油田氮气辅助蒸汽吞吐机理实验研究[J].断块油气田,2013,20(5):667-670.Wang Yang,Jiang Ping,Ge Jijiang,et al.Laboratory study on mechanism of nitrogen-assisted steam stimulation in Jinglou oilfield[J].Fault-block Oil & Gas Field,2013,20(5):667-670.
[18] 崔连训.河南稠油油藏氮气辅助蒸汽吞吐机理及氮气添加量优化研究[J].石油地质与工程,2012,26(2):64-67.Cui Lianxun.Nitrogen auxiliary steams stimulation mechanism and the nitrogen additive quantity optimization research[J].Petroleum Geology and Engineering,2012,26(2):64-67.
[19] 谷朋,倪伟.底水油藏高含水油井注氮气吞吐数值模拟研究[J].内江科技,2012,33(6):65,56.Guo Peng,Ni Wei.Numerical simulation of nitrogen injection and puff in high water cut oil wells in bottom water reservoir[J].Nei Jiang Ke Ji,2012,33(6):65,56.