水基纳米聚硅降压增注技术.pdf
2012年2月大庆石油地质与开发Feb.2012第31卷第1期Petroleum Geology and Oilfield Development in DaqingVol 31 No. IDOI:10.3969/J.ISSN.1000-3754.2012.01.022水基纳米聚硅降压増注技术王金多大庆油田有限责任公司海拉尔石油勘探开发指摔部,内蒙古呼伦贝尔021000摘要:海拉尔油田属于低渗透水敏油藏,开发中注水压力高、注水量低、不能正常配注,地层能量没有得到及时有效补充,严重影响了油田开发效果。为了改善注水开发效果,引入了纳米技术,通过注入带有阳离子基团的SiO2溶液提高水相相对渗透率和油层吸水能力。室内实验证明SiO2溶液能将岩石的润湿性由原来的强水湿变为中间湿或弱水湿,并给出了SiO2溶液最佳使用质量浓度为1000mg/L、与岩石表面吸附时间必须在24h以上等结果。现场应用14口井,平均注水压力下降0.7MPa,日增注12m3,取得了较好效果关键词:纳米聚硅;水基;润湿性;增注技术;低渗透水敏油藏中图分类号:TE357.46文献标识码:A文章编号:1000-3754(2012)01-0109-05PRESSURE REDUCING AND INJECTION ENHANCINGTECHNIQUE BY WATER-BASED NANOMETER POLYSILICONWANG Jinduo(Hailar Petroleum Exploration and Development Headquarters, Daqing Oilfield Company LtdHulunbeier 021000, ChinaAbstract Hailar Oilfield is characterized by low-permeability and water-sensitive oil reservoirs. In the course of itsdevelopment, because of high water injection pressure, low water injection rate, can-not-be-allocated normally in-ection and moreover the formation energy not timely and effectively made-up, the oilfield development effects areseriously influenced. In order to improve the effects of the water injection development, nanometer technology is introduced. The relative permeability of the water phase and the absorption capacity of the oil layers are all enhancedy injecting $io solution with cationic groups. The laboratory test shows that the solution can change the rock wettability from original strong water one to medium or weak water one and moreover the best used mass concentrationof the above solution should be 1 000 mg/L and the absorption time on the surface of the rocks should be more than24 h and so forth. The technique is applied in 14 wells of the field, the water injection pressure drops 0.7 Mpa averagely; the daily injection rate increases 12 m,under the condition of average water injection pressure. In a wordmuch better effects are obtainedKey words nanometer polysilicon; water base; wettability; enhanced injection technology; low-permeabilityand water-sensitive oil收稿日期:2011-03-17改回日期:20110607基金项目:中国石油天然气股份有限公司科技项目(2009D-1503-05)资助。作者简介:王金多,男,1976年生,工程师,硕士,主要从事油田开发研究。E-mail:fivejing163.com
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2012年2月
大庆石油地质与开发
Feb..2012
第31卷第1期
Petroleum Geology and Oilfield Development in Daqing
Vol 31 No. I
DOI:10.3969/J.ISSN.1000-3754.2012.01.022
水基纳米聚硅降压増注技术
王金多
大庆油田有限责任公司海拉尔石油勘探开发指摔部,内蒙古呼伦贝尔021000
摘要:海拉尔油田属于低渗透水敏油藏,开发中注水压力高、注水量低、不能正常配注,地层能量没有得到及
时有效补充,严重影响了油田开发效果。为了改善注水开发效果,引入了纳米技术,通过注入带有阳离子基团
的SiO2溶液提高水相相对渗透率和油层吸水能力。室内实验证明SiO2溶液能将岩石的润湿性由原来的强水湿变
为中间湿或弱水湿,并给出了SiO2溶液最佳使用质量浓度为1000mg/L、与岩石表面吸附时间必须在24h以上
等结果。现场应用14口井,平均注水压力下降0.7MPa,日增注12m3,取得了较好效果
关键词:纳米聚硅;水基;润湿性;增注技术;低渗透水敏油藏
中图分类号:TE357.46
文献标识码:A
文章编号:1000-3754(2012)01-0109-05
PRESSURE REDUCING AND INJECTION ENHANCING
TECHNIQUE BY WATER-BASED NANOMETER POLYSILICON
WANG Jinduo
(Hailar Petroleum Exploration and Development Headquarters, Daqing Oilfield Company Ltd
Hulunbeier 021000, China
Abstract Hailar Oilfield is characterized by low-permeability and water-sensitive oil reservoirs. In the course of its
development, because of high water injection pressure, low water injection rate, can-not-be-allocated normally in-
ection and moreover the formation energy not timely and effectively made-up, the oilfield development effects are
seriously influenced. In order to improve the effects of the water injection development, nanometer technology is in
troduced. The relative permeability of the water phase and the absorption capacity of the oil layers are all enhanced
y injecting $io solution with cationic groups. The laboratory test shows that the solution can change the rock wet
tability from original strong water one to medium or weak water one and moreover the best used mass concentration
of the above solution should be 1 000 mg/L and the absorption time on the surface of the rocks should be more than
24 h and so forth. The technique is applied in 14 wells of the field, the water injection pressure drops 0.7 Mpa av
eragely; the daily injection rate increases 12 m,under the condition of average water injection pressure. In a word
much better effects are obtained
Key words nanometer polysilicon; water base; wettability; enhanced injection technology; low-permeability
and water-sensitive oil
收稿日期:2011-03-17改回日期:20110607
基金项目:中国石油天然气股份有限公司科技项目(2009D-1503-05)资助。
作者简介:王金多,男,1976年生,工程师,硕士,主要从事油田开发研究。
E-mail:fivejing@163.com
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