耐温抗盐悬浮隔板凝胶堵剂研究
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摘要
传统溶洞型油藏可固化颗粒注入性较差,密度选择性差,同时无机颗粒堵剂刚性大、变形能力弱、通过能力差,树脂类堵剂无选择性封堵作用等一系列问题,使得塔河油田堵水效果不佳。针对塔河油田堵水现状,通过系统考察凝胶体系成胶强度和脱水率来筛选合成了一种耐温抗盐性复合凝胶体系,通过耐温抗盐性机理分析等方法对样品迚行评价,得到最佳配方:0.8%AM/AMPS+0.04%酚类交联剂+0.04%醛类交联剂+0.04%多酚+0.3%硫脲+0.1%POP+0.5%轻质纤维BX。结果表明,此凝胶体系具有良好的耐温抗盐性、热稳定性和悬浮稳定性,在130℃时,30 d脱水率低于10%,凝胶成胶时间大于8 h,可耐矿化度达到223 000 mg/L。
The traditional karst cave reservoirs have poor injectability and poor density selectivity of solidified particles. At the same time, the inorganic particle plugging agent has large rigidity, weak deformation ability, poor passing ability, and resin plugging agent has not selective sealing effect. Due to above problems, the water blocking effect of Tahe oilfield is not good. Aiming at the current situation of water shut-off in Tahe oilfield, the gelatinization strength and dehydration rate of gel system were systematically investigated to screen out an temperature-resistant and salt-resistant gel system, and the gel system was evaluated by analyzing the properties of temperature and salt tolerance.The best formula was obtained as follows: 0.8% AM/AMPS+0.04% phenolic crosslinker+0.04% aldehyde crosslinker+0.04% polyphenol+0.3% thiourea +0.1% POP+0.5% lightweight fiber BX. The test results showed that the gel system had good temperature and salt resistance, thermal stability and suspension stability. At 130 ℃, the dehydration rate was less than 10% at 30 ℃, the gel gelling time was greater than 8 h, and its salinity tolerance reached223 000 mg/L.
The traditional karst cave reservoirs have poor injectability and poor density selectivity of solidified particles. At the same time, the inorganic particle plugging agent has large rigidity, weak deformation ability, poor passing ability, and resin plugging agent has not selective sealing effect. Due to above problems, the water blocking effect of Tahe oilfield is not good. Aiming at the current situation of water shut-off in Tahe oilfield, the gelatinization strength and dehydration rate of gel system were systematically investigated to screen out an temperature-resistant and salt-resistant gel system, and the gel system was evaluated by analyzing the properties of temperature and salt tolerance.The best formula was obtained as follows: 0.8% AM/AMPS+0.04% phenolic crosslinker+0.04% aldehyde crosslinker+0.04% polyphenol+0.3% thiourea +0.1% POP+0.5% lightweight fiber BX. The test results showed that the gel system had good temperature and salt resistance, thermal stability and suspension stability. At 130 ℃, the dehydration rate was less than 10% at 30 ℃, the gel gelling time was greater than 8 h, and its salinity tolerance reached223 000 mg/L.
引文
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[2]龙秋莲.塔河缝洞型碳酸盐岩油藏堵水机理研究[D].中国地质大学(北京),2009.
[3]荣元帄,高艳霞,李新华.塔河油田碳酸盐岩缝洞型油藏堵水效果地质影响因素[J].石油与天然气地质,2011,32(06):940-945.
[4]姚翔,董杰,杨慧,杨雪.碳酸盐岩油藏化学堵水工艺研究与评价[J].石油化工应用,2012,31(08):61-64.
[5]甘露,石凯,张淑华.塔河原油脱盐脱水研究最新迚展[J].当代化工,2013,42(12):1652-1654.
[6]王建云.塔河油田奥陶系碳酸盐岩油藏堵水工艺技术浅谈[J].新疆石油天然气,2005(02):62-68+2-1.
[7]李阳.塔河油田奥陶系碳酸盐岩溶洞型储集体识别及定量表征[J].中国石油大学学报(自然科学版),2012,36(01):1-7.
[8]杜立滨.碳酸盐岩油藏油井堵水效果评价--以塔河油田为例[J].中国高新技术企业,2008(16):89+92.
[9]杨建清.缝洞型碳酸盐岩油藏密度选择性堵水工艺技术研究[D].西南石油大学,2013.
[10]潘国臣,刘锋,徐伟,王正荣.塔河油田严重漏失井挤水泥堵水工艺研究[J].钻采工艺,2013,36(02):12-14+147.
[11]何星,吴文明,李亮.密度选择性堵水工艺在缝洞型油藏中的应用[J].断块油气田,2013,20(03):380-383.
[12]黎慧,戴彩丼,魏子扬,等.适用于海上油田的耐温抗盐速溶冻胶堵剂的研究[J].石油钻采工艺,2014,36(3):96-99.
[13]SYDANSK R D.Acrylamide-polymer/chromium(Ⅲ)-carboxylate gelsfor near wellbore matrix treatments[J].SPE Advanced Technology Series,1993,1(1):146-152.
[14]张玉平,叶彦春,郭燕文,张军良.耐温抗盐型丙烯酰胺共聚物的研究迚展[J].应用化工,2005(10):11-13.
[15]Audibert A,Argillier J F.Thermal stability of sulfonated Polymers[J].SPE 2995,1995.
[16]李奇,蒲万芬,王亚波,耿向飞.AM/AMPS共聚物的合成与性质研究[J].应用化工,2012,41(02):300-303+313.
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