| 高密度酸加重酸化技术在川西深井异常高压气层增产中的应用 |
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| 引用本文： | 李刚,郭新江,陈海龙,胥云,丛连铸.高密度酸加重酸化技术在川西深井异常高压气层增产中的应用[J].矿物岩石,2006,26(4):105-110. |
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| 作者姓名： | 李刚 郭新江 陈海龙 胥云 丛连铸 |
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| 作者单位： | 中国石化西南分公司工程技术研究院,四川,德阳,618000;中国石油勘探开发研究院廊坊分院,河北,廊坊,102800 |
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| 摘 要： | 针对四川盆地川西坳陷中段上三叠统须家河组须二气藏超深层、高温、异常高压、异常高地应力、致密砂岩裂缝性储层深井酸化时,井口泵压高,往往超过目前设备承压能力,很难保证安全施工。通过高密度酸加重酸化技术在CG 561井的应用证实能够有效降低施工泵压,提高酸化工作液密度,增加井筒液柱压力,适应特殊地层,对于该井须二气藏采用高密度酸液(含15%~20%盐酸的常规酸液)加重酸化技术,可降低井口施工泵压13M Pa~17 M Pa,经过对CG 561井的酸化后压力恢复试井测试结果证实增产94%,达到安全、优质、快捷的增产施工效果。
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| 关 键 词： | 川西 深井 异常高压储层 高密度酸 加重酸化技术 |
| 文章编号： | 1001-6872（2006）04-0105-06 |
| 收稿时间： | 2006-10-12 |
| 修稿时间： | 2006-10-122006-11-28 |
APPLICATION OF AGGRAVATING ACIDIFICATION OF HIGH DENSITY ACID IN STIMULATION OF DEEP WELL WITH SURPRESSURE GAS RESERVOIR OF WEST SICHUAN |
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| LI Gang,GUO Xin-jiang,CHEN Hai-long,XUN Yun,CONG Lian-zhu.APPLICATION OF AGGRAVATING ACIDIFICATION OF HIGH DENSITY ACID IN STIMULATION OF DEEP WELL WITH SURPRESSURE GAS RESERVOIR OF WEST SICHUAN[J].Journal of Mineralogy and Petrology,2006,26(4):105-110. |
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| Authors: | LI Gang GUO Xin-jiang CHEN Hai-long XUN Yun CONG Lian-zhu |
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| Abstract: | Tight fracture-type reservoir-Xu 2 of Xujiahe Formation in the middle section of west Sichuan depression is famous for its following features: supper deep,HT,surpressure and abnormal stress.Acidizing treatment of deep well within the reservoir encounters very high pumping pressure of wellhead.In many cases the pressure is higher than the limit of equipment so that treatment cannot be accomplished.This paper presents aggravating acidification technology of high density acid,which can depress the pumping pressure of treatment and ensure the security of treatment and produce response. |
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| Keywords: | West of Sichuan deep well surpressure reservoir high density acid aggravating acidification technology |
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