岩性油气藏 ›› 2020, Vol. 32 ›› Issue (6): 172–180.doi: 10.12108/yxyqc.20200617

• 石油工程 • 上一篇    

页岩油水平井体积压裂及微地震监测技术实践

刘博1, 徐刚1, 纪拥军2, 魏路路1, 梁雪莉1, 何金玉2   

  1. 1. 中国石油集团东方地球物理勘探有限责任公司 新兴物探开发处, 河北 涿州 072751;
    2. 中国石油新疆油田分公司, 新疆 克拉玛依 834000
  • 收稿日期:2020-04-01 修回日期:2020-05-12 出版日期:2020-12-01 发布日期:2020-10-30
  • 第一作者:刘博(1981-),男,硕士,工程师,主要从事非常规油气微地震监测技术方面的研究工作。地址:(072750)河北省涿州市甲秀路物探局5号院新兴物探开发处A座。Email:liubo09@cnpc.com.cn。
  • 基金资助:
    中国石油天然气集团有限公司科学研究与技术开发项目“煤炭地下气化关键技术研究与先导试验”（编号：2019E-25JT）资助

Practice of volume fracturing and microseismic monitoring technology in horizontal wells of shale oil

LIU Bo1, XU Gang1, JI Yongjun2, WEI Lulu1, LIANG Xueli1, HE Jinyu2   

  1. 1. New Resources Geophysical Exploration Division, Bureau of Geophysical Prospecting INC., CNPC, Zhuozhou 072751, Hebei, China;
    2. PetroChina Xinjiang Oilfield Company, Karamay 834000, Xinjiang, China
  • Received:2020-04-01 Revised:2020-05-12 Online:2020-12-01 Published:2020-10-30

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摘要： 为探索和解决准噶尔盆地吉木萨尔区块页岩油藏水平井体积压裂和平台式拉链压裂过程中人工裂缝网络的成像问题，储层改造方案采用高密度密集切割体积压裂充分改造储层，大排量施工满足多簇、多缝充分开启，滑溜水和胍胶逆混合压裂工艺实现高效造缝携砂，结合多种粒径支撑剂有效充填微细裂缝及主体人工裂缝。通过微地震井中监测技术识别页岩油水平井人工裂缝网络。结果表明：断层和天然裂缝带对微地震事件属性特征有影响，同时事件属性特征也能表征断层和天然裂缝的发育程度。在大规模体积压裂改造下，研究区内4口井的人工裂缝横向相互连通，形成了复杂的裂缝网络。压后投产初期的日产油量得到了较大提升，为该区页岩油的长期高效开发提供了技术依据。

关键词: 页岩油, 密切割体积压裂, 储层改造, 微地震监测, 缝网评价, 吉木萨尔凹陷

Abstract: In order to explore and solve the imaging problem of artificial fracture network during horizontal well volume fracturing and bench top zipper fracturing of shale reservoir in Jimsar block, Junggar Basin,high density dense cutting volume fracturing was adopted to carry out reservoir stimulation,large displacement construction can meet the requirements of full opening of multiple clusters and fractures,reverse mixed fracturing process of slick water and guar gum can realize high-efficiency fracture making and sand carrying, and combined with a variety of particle size proppant,it can effectively fill micro fractures and artificial fractures. The artificial fracture network of shale oil horizontal well was identified by microseismic monitoring technology. The results show that faults and natural fracture zones have influence on microseismic events attribute characteristics,and events attribute characteristics can also show the development degree of faults and natural fractures. Under large-scale volume fracturing,the artificial fractures of four wells in the study area were connected with each other horizontally, forming a complex fracture network. The daily oil production in the initial stage of production after fracturing has been greatly improved,and it can provide a technical basis for long-term and efficient development of shale oil in this area.

Key words: shale oil, dense cutting volume fracturing, reservoir stimulation, microseismic monitoring, network evaluation, Jimsar sag

中图分类号: 

  • P631
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