单水平井SAGD开发效果分析及工艺参数优化
Development effect analysis and process parameter optimization of single horizontal well SAGD
于田田 1梁伟 1段龙宾 2帕尔哈提·阿布都克里木 3徐宸 4盖平原 1陈丽媛 1张兆祥 1王新伟2
作者信息
- 1. 中国石化胜利油田分公司石油工程技术研究院,山东东营 257000;山东省稠油开采技术省级重点实验室,山东东营 257000
- 2. 中国石油大学(华东)新能源学院,山东青岛 266580
- 3. 新疆油田分公司实验检测研究院,新疆克拉玛依 834000
- 4. 泰州油恒油气工程服务有限公司,江苏泰州 225300
- 折叠
摘要
单水平井蒸汽辅助重力泄油(SAGD)技术有望提高薄层特稠油油藏开发效果,但开发效果受储层特性、工艺参数等影响大.采用CMG软件进行薄层特稠油油藏单水平井SAGD开发的数值模拟研究,明确油藏特性对单水平井SAGD开发效果的影响规律,并以哈浅 22 块油藏参数为基础,优化吞吐预热轮次、SAGD射孔注汽长度、注汽速度等工艺参数.结果表明:单水平井SAGD可实现薄层特稠油油藏的有效开发,最终采收率达21%,但开采油汽比仅约为0.082;在渗透率不小于2530×10-3 μm2,孔隙度不小于30.3%,含油饱和度不小于65%时,单水平井SAGD能达到较好的应用效果;优选最佳的单水平井SAGD蒸汽吞吐预热轮次为8次,趾端注汽长度为100 m,注汽速度为100 m3/d.
Abstract
The single horizontal well steam assisted gravity drainage(SAGD)technology is a promising replacement technology for improving the development effect of thin layer extra heavy oil reservoirs.However,the specific development effect was great-ly affected by reservoir characteristics,process parameters,etc.The CMG software was used to conduct numerical simulations on the development of the single horizontal well SAGD in thin layer extra heavy oil reservoirs,to clarify the influence of reser-voir characteristics on the development effect of the single horizontal well SAGD.Based on the parameters of the Haqian 22 block reservoir,the process parameters such as preheating cycles,the SAGD perforation steam injection length,and the steam injection speed were optimized.The results show that the single horizontal well SAGD can achieve effective development of thin layer extra heavy oil reservoirs,with a final recovery rate of 21%,but the steam to oil ratio for oil recovery is only about 0.082.When the permeability is not less than 2530×10-3 μm2,the porosity is not less than 30.3%,and the oil saturation is not less than 65%,the single horizontal well SAGD can achieve good application results.The optimal single horizontal well SAGD steam stimulation preheating cycle is 8,with a toe end steam injection length of 100 m and a steam injection speed of 100 m3/d.
关键词
SAGD/单水平井/数值模拟/油藏特性/参数优化Key words
SAGD/single horizontal well/numerical simulation/reservoir characteristics/parameter optimization引用本文复制引用
基金项目
国家自然科学基金企业创新发展联合基金项目(U20B6003)
中国石化重点科技攻关项目(P22033-1)
出版年
2024
国家科技期刊平台
NSTL
万方数据