新型粘土稳定剂的合成及油层粘土稳定剂的优化

发布时间：2018-01-21 09:16

  本文关键词： 吡啶碱 粘土稳定剂 环氧氯丙烷 氯化苄 复配　出处：《东南大学》2015年硕士论文　论文类型：学位论文

【摘要】：在油田开采过程中,需要有针对性地使用粘土稳定剂,否则会造成粘土物质的水化膨胀和分散运移,堵塞孔隙喉道,降低地层的渗透性,进而影响到开采效果。本文以醛氨法生产吡啶的副产物(简称3#吡啶碱)为原料,分别与环氧氯丙烷和氯化苄发生反应,研制合成了两种新型粘土稳定剂。考察了反应过程中的影响因素,确定了最佳合成条件,在室内实验中进行了粘土防膨效果评价及复配实验,并探讨了粘土稳定相关机理。具体研究内容和结果如下：1.以3#比啶碱和环氧氯丙烷为原料合成PCS-01粘土稳定剂的最佳反应条件是：原料的质量比m(3#吡啶碱)：m(环氧氯丙烷)=1.2：1,60℃时滴加环氧氯丙烷,在90℃下恒温反应10h。性能测定表明,该粘土稳定剂与地层水配伍性良好,最佳使用浓度是8%,此时的静态防膨率为87.2%,耐水洗率高达92.7%,耐高温性能好,可在90℃以下的高温环境下使用。2.以3#吡啶碱和氯化苄为原料合成PCS-02粘土稳定剂的最佳反应条件是：原料的质量比m(3#吡啶碱)：m(氯化苄)=1：1.1,在65℃下滴加氯化苄,恒温80℃下反应8h。最佳使用浓度是6%,此时的静态防膨率为88.2%,耐水洗率为93.2%,具有一定的耐高温性。PCS-02防膨性能优于PCS-01粘土稳定剂,但与地层水的配伍性较弱。3.选取KCl、NH4Cl分别与PCS-01、02粘土稳定剂进行二元复配,最佳复配方案如下：8% PCS-01粘土稳定剂+1.5%NH4Cl,防膨率为93.8%;6% PCS-02粘土稳定剂+1.0% KC1,防膨率为92.6%,均优于单独使用的效果。将KCl、NH4Cl,与PCS-01、02粘土稳定剂进行三元复配,运用正交实验法选出了最佳复配方案：8% PCS-01粘土稳定剂+0.3%KCl+0.8% NH4Cl,防膨率为92.6%；6% PCS-02粘土稳定剂+0.8%KC1+0.5% NH4Cl,防膨率为92.2%。在复配性能方面PCS-01优于PCS-02粘土稳定剂。4.复合型粘土稳定剂的防膨性能均优于单独使用的效果,耐温性能良好,适合在30～90℃温度区间内使用。复配后其耐水洗率有所下降,但幅度较小,仍在90%左右,故可作为耐高温型长效粘土稳定剂使用。
[Abstract]:In the process of oilfield production, clay stabilizer is needed, otherwise it will cause hydration expansion and dispersed migration of clay material, block pore throat and reduce formation permeability. In this paper, the by-product of pyridine production by aldehyde-ammonia method (abbreviated as #datepyridine base) was used as raw material to react with epichlorohydrin and benzyl chloride, respectively. Two kinds of new clay stabilizers were synthesized, the influencing factors in the reaction process were investigated, the optimum synthetic conditions were determined, and the anti-swelling effect evaluation and compound experiment of clay were carried out in laboratory experiments. The main contents and results are as follows: 1. The optimum reaction conditions for the synthesis of PCS-01 clay stabilizer from alididine and epichlorohydrin are as follows: 1. Mass ratio of raw materials. (1. 2: 1) epichlorohydrin. Epichlorohydrin was added at 60 鈩，

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