CN106190078B - 一种环保型微乳液清防蜡剂及制备方法 - Google Patents
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Abstract
本发明涉及一种环保型微乳液清防蜡剂,包括质量百分比为10~30%的溶胀剂、1~5%的润湿反转剂、1~10%的乳化分散剂,其余为水。所述溶胀剂、润湿反转剂、乳化分散剂的总质量百分比为20~40%。本发明所提供的环保型微乳液清防蜡剂,其具有生物降解性好、不含有机溶剂、兼具清蜡与防蜡、适用于不同矿化度和不同温度的油井、贮存稳定、使用方便、产品呈中性、不腐蚀油管等优点。
Description
技术领域
本发明涉及油田化学应用领域,具体涉及一种生物降解性好、不含有机溶液、兼具清蜡与防蜡功能的环保型微乳液清防蜡剂及其制备方法。
背景技术
我国大多数油田原油含蜡量高、凝点高,在开采及输送过程中随着温度、压力等条件的变化易于析出蜡晶,堵塞井筒,影响生产,严重时造成停产。在现有的油田清防蜡技术中,化学清防蜡技术操作简便、费用低。化学清防蜡剂包括油基清防蜡剂、水基性清防蜡剂、乳液型清防蜡剂及固体型防蜡剂四类。油基清蜡剂清蜡效率高但有毒,水基清蜡剂毒性小但清蜡效果差,乳液型清蜡剂结合了油基和水基的优点,但制备和储存时条件苛刻,稳定性差,在实际应用过程中易出现分层,现场无法大规模推广,固体型主要起防蜡作用。
宋连银等人开发了一种由有机溶剂、表面活性剂、助表面活性剂及分散剂组成的微乳液清蜡剂(发表于《石油化工应用》第33卷第3期,2014年3月),经实验证明,微乳液清蜡剂在溶蜡速率方面略高于现有清蜡剂,闪点高、密度大、溶蜡速率快,可方便冬季使用。但该文中未明确提及有机溶剂BJ-2的种类,从该文表2中可初步判断BJ-2可能是一种烷基取代苯。由于该有机溶剂BJ-2在配方中的用量较大(60%),生物降解性差,不符合环保的要求,因此需要开发一种生物降解性好、不含有机溶剂的清防蜡剂。
发明内容
有鉴于此,本发明的目的是提供一种环保型微乳液清防蜡剂及制备方法,具有生物降解性好、不含有机溶剂、兼具清蜡与防蜡、适用于不同矿化度和不同温度的油井、贮存稳定、使用方便、产品呈中性、不腐蚀油管等优点。
为了达成上述目的,本发明提供一种环保型微乳液清防蜡剂,按质量百分比计包括以下成分:
其中,润湿反转剂的作用是将亲油表面润湿反转为中性表面,使蜡膜从油管表面卷缩,形成裂缝;溶胀剂的作用是进入腊膜内部,使蜡膜变松散;乳化分散剂的作用是吸附于蜡块和油管的表面形成极性水膜,防止蜡的再沉积。通过调整溶胀剂、乳化分散剂和润湿反转剂的分子结构和组成,形成微乳液。
在优选的实施方案中,其中所述溶胀剂、润湿反转剂及乳化分散剂的总质量百分比为20~40%。
在优选的实施方案中,其中所述溶胀剂、润湿反转剂、乳化分散剂的总质量百分比为20~25%。
在优选的实施方案中,其中所述溶胀剂选自由C12-C18脂肪醇、C12-18脂肪酸甲酯组成的组中的一种或两种及以上的混合物。
在优选的实施方案中,其中所述润湿反转剂为双子季铵盐。
在优选的实施方案中,其中所述乳化分散剂选自由脂肪醇聚醚硫酸酯盐、脂肪醇聚醚磷酸酯盐组成的组中的一种或两种及以上的混合物。
在优选的实施方案中,其中所述脂肪醇聚醚硫酸酯盐、脂肪醇聚醚磷酸酯盐均衍生自脂肪醇聚醚,该脂肪醇聚醚是由脂肪醇与环氧乙烷聚合而成,且环氧乙烷加合数不低于7。
在优选的实施方案中,其中所述环氧乙烷加合数不低于10。这是为了避免脂肪醇聚醚硫酸酯盐、脂肪醇聚醚磷酸酯盐与双子季铵盐之间生成难溶性盐,进而影响各自的功能所必须要规定的条件。
在优选的实施方案中,其中所述环保型微乳液清防蜡剂按质量百分比计包括以下成分:
本发明还提供一种根据上述环保性微乳液清防蜡剂的制备方法,包括,在搅拌的反应釜中先加入至少一半的配方量的水,并升高温度到50℃,在搅拌(其转速范围为40-80r/min)下加入配方量的乳化分散剂和润湿反转剂,待搅拌(其转速范围为40-80r/min)至均匀后,再加入配方量的溶胀剂与余下的水,继续搅拌(其转速范围为40-80r/min)均匀,即得到产品。
本发明具有以下有益效果:
(1)本发明所提供的环保型微乳液清防蜡剂,其主要原料均来源于植物,不含有机溶剂,生物降解性好,符合国家的环保政策;
(2)本发明所提供的环保型微乳液清防蜡剂,其耐盐耐钙性好,适用于不同矿化度的油井;
(3)本发明所提供的环保型微乳液清防蜡剂,其具有清蜡与防蜡双重功能,产品呈中性、不腐蚀油管,贮存稳定、使用方便。
具体实施方式
本发明实施例的一种环保型微乳液清防蜡剂,包括质量百分比为10~30%的溶胀剂、1~5%的润湿反转剂、1~10%的乳化分散剂,其余为水。所述溶胀剂、润湿反转剂、乳化分散剂的总质量百分比为20-40%。
所述环保性微乳液清防蜡剂的制备方法:在反应釜中先加入配方量的水,开动搅拌,升高温度到50℃,在搅拌下依次加入配方量的乳化分散剂和润湿反转剂,在该温度下搅拌至均匀后,再在搅拌下加入配方量的溶胀剂,继续搅拌均匀,即得到产品。
下面通过具体举例说明本发明的配方。
实施例1
溶胀剂为C16-18脂肪酸甲酯,润湿反转剂为双子季铵盐、乳化分散剂为脂肪醇聚醚磷酸酯盐,其配比如下(按质量百分比计):
所述溶胀剂、润湿反转剂、乳化分散剂的总质量百分比为20%。
制备方法:在反应釜中先加入800kg水,开动搅拌,升高温度到50℃,在搅拌下依次加入乳化分散剂脂肪醇聚醚磷酸酯盐70kg、润湿反转剂双子季铵盐30kg,在该温度下搅拌至均匀后,再在搅拌下加入溶胀剂双子季铵盐100kg,继续搅拌均匀,即得到产品。该产品的使用浓度为0.3wt‰时,含水50wt%的原油防蜡率达到97.2%,降粘率达到78.5%,析蜡点降低18.5℃,凝固点降低12.3℃,(以上转速均为40r/min)。
实施例2
溶胀剂为C12-14脂肪醇,润湿反转剂为双子季铵盐、乳化分散剂为脂肪醇聚醚硫酸酯盐,其配比如下(按质量百分比计):
所述溶胀剂、润湿反转剂、乳化分散剂的总质量百分比为40%。
制备方法:在反应釜中先加入600Kg水,开动搅拌,升高温度到50℃,在搅拌下依次加入乳化分散剂脂肪醇聚醚硫酸酯盐100kg和润湿反转剂双子季铵盐50kg,在该温度下搅拌至均匀后,再在搅拌下加入溶胀剂C1214脂肪醇250kg,继续搅拌均匀,即得到产品。该产品的使用浓度为0.3wt‰时,含水50wt%的原油防蜡率达到98.1%,降粘率达到82.3%,析蜡点降低19.8℃,凝固点降低13.4℃,(以上转速均为50r/min)。
实施例3
溶胀剂为C12脂肪醇与C18脂肪酸甲酯的混合物,润湿反转剂为双子季铵盐、乳化分散剂为脂肪醇聚醚硫酸酯盐和脂肪醇聚醚磷酸酯盐的混合物,其配比如下:
所述溶胀剂、润湿反转剂、乳化分散剂的总质量百分比为32%。
制备方法:在反应釜中先加入680kg水,开动搅拌,升高温度到50℃,在搅拌下依次加入乳化分散剂脂肪醇聚醚磷酸酯盐5kg、脂肪醇聚醚硫酸酯盐5kg、和润湿反转剂双子季铵盐10kg,在该温度下搅拌至均匀后,再在搅拌下加入溶胀剂C12脂肪醇150kg、C18脂肪酸甲酯150kg,继续搅拌均匀,即得到产品。该产品的使用浓度为0.3wt‰时,含水50wt%的原油防蜡率达到97.8%,降粘率达到78.7%,析蜡点降低19.1℃,凝固点降低12.9℃,(以上转速均为60r/min)。
实施例4
溶胀剂为C12-18脂肪酸甲酯,润湿反转剂为双子季铵盐、乳化分散剂为脂肪醇聚醚磷酸酯盐,其配比如下(按质量百分比计):
所述溶胀剂、润湿反转剂、乳化分散剂的总质量百分比为23%。
制备方法:在反应釜中先加入770kg水,开动搅拌,升高温度到50℃,在搅拌下依次加入乳化分散剂脂肪醇聚醚磷酸酯盐55kg和润湿反转剂双子季铵盐25kg,在该温度下搅拌至均匀后,再在搅拌下加入溶胀剂C12-18脂肪酸甲酯150kg,继续搅拌均匀,即得到产品。该产品的使用浓度为0.3‰时,含水50%的原油防蜡率达到97.8%,降粘率达到78.9%,析蜡点降低了18.8℃,凝固点降低了12.6℃,(以上转速均为80r/min)。
本发明不局限于上述最佳实施方式,任何人在本发明的启示下都可得出其他各种形式的产品,但不论在其形状或结构上作任何变化,凡是具有与本申请相同或相近似的技术方案,均落在本发明的保护范围之内。
Claims (7)
1.一种环保型微乳液清防蜡剂,其特征在于:按质量百分比计包括以下成分:
溶胀剂 10~30%;
润湿反转剂 1~5%;
乳化分散剂 1~10%;
水 余量;
所述溶胀剂选自由C12-C18脂肪醇、C12-18脂肪酸甲酯组成的组中的一种或两种及以上的混合物;
所述润湿反转剂为双子季铵盐;
所述乳化分散剂选自由脂肪醇聚醚硫酸酯盐、脂肪醇聚醚磷酸酯盐组成的组中的一种或两种及以上的混合物。
2.根据权利要求1所述的环保型微乳液清防蜡剂,其特征在于:所述溶胀剂、润湿反转剂及乳化分散剂的总质量百分比为20~40%。
3.根据权利要求2所述的环保型微乳液清防蜡剂,其特征在于:所述溶胀剂、润湿反转剂、乳化分散剂的总质量百分比为20~25%。
4.根据权利要求1-3任一项所述的环保型微乳液清防蜡剂,其特征在于:所述脂肪醇聚醚硫酸酯盐、脂肪醇聚醚磷酸酯盐均衍生自脂肪醇聚醚,该脂肪醇聚醚是由脂肪醇与环氧乙烷聚合而成,且环氧乙烷加合数不低于7。
5.根据权利要求4所述的环保型微乳液清防蜡剂,其特征在于:所述环氧乙烷加合数不低于10。
6.根据权利要求1所述的环保型微乳液清防蜡剂,其特征在于:按质量百分比计包括以下成分:
C16-18脂肪酸甲酯 10-15%;
双子季铵盐 2-3%;
脂肪醇聚醚磷酸酯盐 5-8%;
水 余量。
7.一种根据权利要求1所述的环保型微乳液清防蜡剂的制备方法,其特征在于:包括,在搅拌的反应釜中先加入配方量的水,并升高温度到50℃,在搅拌下加入配方量的乳化分散剂和润湿反转剂,
待搅拌至均匀后,再加入配方量的溶胀剂,继续搅拌均匀,即得到产品量的溶胀剂,继续搅拌均匀,即得到产品。
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