石油与天然气地质 ›› 2022, Vol. 43 ›› Issue (5): 1221-1237.doi: 10.11743/ogg20220517
王光付1(), 李凤霞1,2,3, 王海波1,2,3, 李军1, 张宏1, 周彤1,2,3, 商晓飞1, 潘林华1, 沈云琦1
收稿日期:
2022-07-11
修回日期:
2022-08-20
出版日期:
2022-10-01
发布日期:
2022-09-02
第一作者简介:
王光付(1965-),男,博士、教授级高级工程师,油气田开发。E?mail: 基金项目:
Guangfu Wang1(), Fengxia Li1,2,3, Haibo Wang1,2,3, Jun Li1, Hong Zhang1, Tong Zhou1,2,3, Xiaofei Shang1, Linhua Pan1, Yunqi Shen1
Received:
2022-07-11
Revised:
2022-08-20
Online:
2022-10-01
Published:
2022-09-02
摘要:
地质-工程一体化理念和做法已广泛应用于非常规油气藏勘探开发,贯穿井位地质设计、钻井、完井、压裂投产全过程,但不同阶段和不同地质条件下侧重点有所差异。在涪陵页岩气田开发成功引进并完善了北美非常规地质-工程一体化压裂技术,但这一技术在新区探井压裂中的推广存在局限性。由于四川盆地沉积和构造类型具多样性和复杂性,盆地内非常规气探井的压裂测试无法获得工业气流现象突出,相邻或同一区块探井或评价井压裂产量差异大,主要原因是甜点的裂缝和地应力等地质-工程关键参数三维定量表征及建模精度不够,针对性的分段分簇、压裂优化设计及布缝控缝定量模拟技术手段欠缺。系统总结了地质-工程一体化团队在四川盆地复杂致密气和页岩气探井及评价井压裂方面的实践经验,通过开展地质、测井、地震、工程等多专业联合研究,定量表征非常规储层空间展布、物性、含气性、岩石力学及矿物含量、地层压力、应力场、天然裂缝等关键参数,建立了区域气藏三维地质-工程模型,利用模型进行压裂裂缝空间扩展模拟,优化射孔、暂堵、压裂液、支撑剂、排量等工艺参数,及时跟踪分析和调整必要的现场施工参数,从而增加有效改造体积、提高单井产能,探索并形成了地质-工程一体化压裂技术体系及方法流程,在普光千佛崖组致密气和林滩场页岩气等探区应用效果显著,为类似油气藏地质-工程一体化勘探与开发提供借鉴。
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