油气藏评价与开发 ›› 2018, Vol. 8 ›› Issue (5): 70-76.

• 非常规油气 • 上一篇    下一篇

玛湖致密油工厂化压裂技术现场实践

严向阳1,2,王延东3,王腾飞1,2,赵海燕4,徐永辉2,万楷2,郭娜娜1   

  1. 1. 延安能源服务有限公司,陕西 延安 716000
    2. 美国能新科国际有限公司,北京 100022
    3. 延安能源化工(集团)有限责任公司,陕西 延安 716000
    4. 中国石油新疆油田分公司工程技术研究院,新疆 克拉玛依 834000
  • 收稿日期:2017-07-13 发布日期:2018-12-05 出版日期:2018-10-26

Field application of tight oil factory fracturing in Mahu sag

Yan Xiangyang1,2,Wang Yandong3,Wang Tengfei1,2,Zhao Haiyan4,Xu Yonghui2,Wan Kai2,Guo Nana1   

  1. 1. Yan'an Energy Services, Yan'an, Shaanxi 716000, China
    2. ENTI Cooperates, Beijing 100022, China
    3. Yan'an Energy and Chemical Group Co., Ltd., Yan'an, Shaanxi 716000, China
    4. Research Institute of Engineering Technology, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China
  • Received:2017-07-13 Online:2018-12-05 Published:2018-10-26

摘要:

新疆油田玛湖凹陷主力层位三叠系百口泉组为典型的致密油储层。针对该区致密油储层开发要求,通过开展综合分析研究,采用拉链式交错布缝的工厂化压裂思路、快钻桥塞多段多簇的细分切割体积改造设计理念,在玛131井区两口2 000 m长水平段的水平井压裂中探索并应用了前置酸预处理、滑溜水多段塞打磨、低伤害冻胶加砂及利用应力干扰形成复杂缝网等一套适合玛湖砂砾岩储层工厂化体积压裂的技术方法。按照上述技术思路和方法,两口井分别成功实施了26段和22段压裂,用液达到20 162 m 3和23 765 m 3,加入支撑剂达到1 803 m 3和1 702 m 3,且均取得压后稳定产量超过30 t/d的良好增产改造效果。两口井工厂化压裂的成功实施为玛湖致密油后期储层改造技术研究实施奠定了基础,为该区致密油实现规模效应开发提供了有力保障。

关键词: 工厂化压裂, 致密油, 体积压裂, 压裂施工, 玛湖凹陷

Abstract:

Reservoirs in the Triassic Baikouquan formation of Mahu sag in Xinjiang oilfield is a typically tight permeable formation. Considering the purpose of the development and comprehensive analysis, by the factory fracturing ideas of zipper fracturing and subdivision cutting volume fracturing by plug fracturing with multi-stages and multi-clusters, we explored and created a factory fracturing method that is used in 2 horizontal wells of 2 000 meters long in well area Ma131 by using pre-acid pretreatment, slick water multi-plug, low damage gel fracturing fluid which is causing a complex net volume on the role of stress interference. 26 and 22 stages fracture were respectively implemented in 2 wells with the fracturing fluid of 20 162 m 3 and 23 765 m 3 and proppant of 1 803 m 3 and 1 702 m 3, which leads to a good stimulation with the oil yield over 30 tons per day after hydraulic fracturing. The successful study and use of factory fracturing make a good foundation for the later stimulation of Mahu tight oil and provide safeguard for the scale effective development of tight oil in this area.

Key words: factory fracturing, tight oil, volume fracturing, fracturing operation, Mahu sag

中图分类号: 

  • TE357