稠油多轮次注采固井水泥浆体系评价与优选  

Evaluation and optimization of cementing slurry system for multicycle injection-production of heavy oil

作　　者：冯福平[1] 王新宇 张健伟 韩旭[1] 宋巍[2] 杨燕[2] 李路宽 FENG Fuping;WANG Xinyu;ZHANG Jianwei;HAN Xu;SONG Wei;YANG Yan;LI Lukuan(School of Petroleum Engineering,Northeast Petroleum University,Daqing 163318,Heilongjiang,China;PetroChina Jidong Oilfield Company,Tangshan 063200,Hebei,China)

机构地区：[1]东北石油大学石油工程学院,黑龙江大庆163318 [2]中国石油冀东油田分公司,河北唐山063200

出　　处：《能源化工》2024年第2期50-54,共5页Energy Chemical Industry

基　　金：国家自然科学基金面上基金“超临界二氧化碳环境中动力学反应与冲刷耦合作用下水泥微缝自密封机理研究”(No.51774094);黑龙江省自然科学基金资助项目“环空未封固段钻井液老化机理及密封性能评价”。

摘　　要：在稠油多轮次注采开发过程中,井筒水泥环需承受350℃高温及多轮次温度交变,需要水泥浆体系具有良好的耐高温和抗疲劳能力。开发了4种耐高温水泥浆体系,在350℃高温循环加热的条件下,对4种水泥浆体系进行10轮次的加热,分别测定其抗压强度和弹性模量,并取样进行X射线衍射分析、扫描电镜形貌分析、纳米CT扫描测试。评价了4种水泥浆体系的抗高温循环能力,探讨了其性能变化的机理。试验结果表明,复合加砂水泥和耐高温韧性水泥可满足稠油多轮次注采开发需求,硅酸盐水泥中添加细硅粉和弹塑剂可有效改善其抗高温能力和耐疲劳能力。During the development process of multicycle injection and production of heavy oil,the wellbore cement ring should withstand 350℃ high-temperature and multicycle temperature crossing,and the cementing slurry system needs to have good high-temperature resistance and fatigue resistance.Four high-temperature resistant cementing slurry systems are developed and subjected to 10 cycles of heating at 350℃.The compressive strength and elastic modulus of the four cementing slurry systems are measured,and samples are taken for X-ray diffraction analysis,scanning electron microscopy morphology analysis,and nano CT scanning testing.The hightemperature cycling resistance of four cement slurry systems is evaluated and the mechanism of their performance changes is explored.The experimental results show that composite sand cement and high-temperature resistant toughness cement can meet the needs of multicycle injection-production development of heavy oil.The addition of fine silicon powder and elastoplastic agent to portland cement can effectively improve its high-temperature resistance and fatigue resistance.

关 键 词：稠油热采 固井 高温循环 硅酸盐水泥 

分 类 号：TE256.7[石油与天然气工程—油气井工程]