糠醛树脂凝胶调剖体系研制及应用

发布时间：2018-01-10 05:07

本文关键词：糠醛树脂凝胶调剖体系研制及应用　出处：《东北石油大学》2015年硕士论文　论文类型：学位论文

【摘要】：吉林油田中温储层,长期注水开发,窜流严重,无效水循环严重,水驱开发效果差,急需开展深部调剖技术研究,充分调研目前凝胶体系的国内外研究现状,结合油田内部服务公司的生产能力,自主研发、生产糠醛树脂交联剂,配置形成中温高强度凝胶体系,用于注水开发油藏深部调剖,扩大注水波及体积,提高水驱开发效果。糠醛树脂凝胶是在酚醛交联体系的基础上改进的一种交联体系,室内充分应用糠醛合成糠醛树脂交联剂,取代目前应用较多的甲醛树脂,减少环境影响。糠醛树脂是由摩尔比1:1的苯酚和糠醛以及与其质量比10%的氢氧化钠、17%乙醇构成。该交联体系避免了苯酚甲醛的毒性,具有低毒、刺激性气味低的特点,还具有高弹性,抗拉伸的特性。糠醛树脂凝胶体系,包括,其特征是在质量含量0.15%-0.3%聚丙烯酰胺的水溶液中,加入与其质量比0.15%-0.3%的糠醛树脂、0.3%-0.4%的有机铬交联剂、0.1%-0.15%的六亚甲基四胺-硫脲稳定剂。糠醛树脂交联剂研制成功,由兴业油服中式生产,规模化生产,累计生产化学药剂260吨。为了验证体系的适应性,现场选择6井次,经过工程测试手段,识别窜流程度,试验井组主要以微裂缝、高渗条带为主,针对性的设计凝胶与颗粒形成复合体系,现场6井次,累计注入凝胶体系1.27万方,措施后工程指标改善明显,注水压力增加1MPa,吸水指数下降15%,增产原油985吨,减水1.9万方。糠醛树脂凝胶体系,规模生产与应用,有效解决中温储层注水开发矛盾,具有较大的应用潜力与空间,同时为兴业公司创效,经济效益明显,增加产值720万元。
[Abstract]:Jilin oilfield, long-term water injection development, serious channeling, serious ineffective water circulation, poor water drive development effect, the urgent need to carry out deep profile control technology research, full investigation of the current domestic and foreign gel system research status. Combined with the production capacity of the internal service company of oil field, independent research and development, production of furfural resin crosslinking agent, configuration of the formation of medium-temperature high-strength gel system, for waterflooding development of deep profile control, water injection sweep volume. Furfural resin gel is an improved crosslinking system based on phenolic crosslinking system. Furfural resin crosslinking agent is fully used in laboratory to replace formaldehyde resin which is widely used at present. The furfural resin is composed of phenol and furfural with molar ratio of 1: 1 and sodium hydroxide of 17% ethanol with a mass ratio of 10%. The crosslinking system avoids the toxicity of phenol-formaldehyde and has low toxicity. Furfural resin gels are characterized by low irritability, high elasticity and tensile resistance. The furfural resin gels, including, are characterized in aqueous solutions containing 0.15- 0.3% polyacrylamide by mass. An organic chromium crosslinking agent of 0.3-0.4% was added to the furfural resin with a mass ratio of 0.15 to 0.3%. A 0.1% -0.15% hexamethylenetetraamine thiourea stabilizer and furfural resin crosslinking agent were successfully developed. In order to verify the adaptability of the system, 6 wells were selected in the field, and the degree of channeling was identified by engineering test means. The test well group mainly consisted of microfractures and high permeability bands. The composite system of gel and particle was designed, and the gel system was injected for 6 wells. The engineering index was improved obviously and the water injection pressure increased 1 MPA after the measure. The water absorption index is reduced by 15%, the crude oil is increased by 985 tons and the water is reduced by 190,000 square meters. The scale production and application of furfural resin gel system can effectively solve the contradiction of water injection development in medium-temperature reservoir. It has great application potential and space, and creates effect for Xingye Company at the same time, the economic benefit is obvious, and the output value is increased by 7.2 million yuan.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE39

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