一种新型曼尼希碱促凝剂的性能研究  

Study of a New Mannich-Based Accelerating Agent

作　　者：王瑞和[1] 齐志刚[1] 步玉环[1] 曹成章[1] 孔华[1] 

机构地区：[1]中国石油大学(华东)石油工程学院,山东东营257061

出　　处：《石油钻探技术》2009年第3期13-16,共4页Petroleum Drilling Techniques

基　　金：国家高技术研究发展计划("863"计划)项目"深水固井技术研究"(编号:2006AA09Z340)部分研究内容

摘　　要：常规的用于深水固井的水泥浆促凝剂多为无机盐类,给水泥浆带来大量的反应热,威胁到水合物层的稳定性。因此,研制一种低反应热的、适用于钻进深水水合物层的低温促凝剂对安全开采水合物层以下的油气资源、保护水合物稳定具有重要意义。利用有机胺类物质与醛类物质之间的胺甲基化反应,合成了一种曼尼希碱作为低温促凝剂。用正交试验法确定了合成方案:一元甲醛与二乙醇胺的配比为2∶1、草酸与一元甲醛的比例为1∶2、反应温度100℃、反应时间2h。曼尼希碱促凝剂性能评价试验结果表明,对水泥浆的水化热影响较小,促凝早强效果明显,初终凝过渡时间短,近似"直角稠化",能较好地满足深水水合物层的固井要求。With exploration and development of the deepwater reservoirs, encountering hydrate formation is inevitable. Conventional accelerating agents for deepwater cementing are often inorganic salts, which bring a lot of reaction heat that threats the stability of the hydrate in deepwater. Therefore it is very important to develop a low heat accelerating agent to develop the reservoirs under hydrate and protect the hydrate stability. A Mannich-based accelerating agent is copolymerized with organic amine and organic aldehyde by Mannieh reaction. The optimal reaction conditions are obtained by orthogonal experiment meth- od：n（HCHO） ： n （C4H11NO2）=2 ： 1, n（Oxalic） ： n（HCHO）=1 ： 2, reaction temperature 100℃ and reaction time 2 hours. The evaluation result indicates that this accelerating agent has a less reaction heat, an obvious accelerating effect of early strength, a less transition time from initial setting to final setting, and a kind of approximately right angle thickening to cement slurry. It can meet different kinds of cementing operations and assure the cementing quality improvement for deepwater hydrate formation cementing.

关 键 词：深水固井 曼尼希碱 促凝剂 水泥浆 水泥浆性能 

分 类 号：TE256.7[石油与天然气工程—油气井工程]