石油学报 ›› 2006, Vol. 27 ›› Issue (5): 135-138,142.DOI: 10.7623/syxb200605029

• • 上一篇    下一篇

大庆油田嫩二成片套损的地质控制因素

刘合1, 刘建东2,4, 卓胜广3, 金岩松1   

  1. 1. 大庆油田有限责任公司, 黑龙江, 大庆, 163712;
    2. 中国石油勘探开发研究院, 北京, 100083;
    3. 东北大学秦皇岛分校, 河北, 秦皇岛, 066004;
    4. 中国地质大学, 北京, 100083;
  • 收稿日期:2005-10-15 修回日期:2006-02-13 出版日期:2006-09-25 发布日期:2010-05-21
  • 作者简介:刘合,男,1961年3月生,1982年毕业于大庆石油学院石油矿场机械专业,2002年获哈尔滨工业大学博士学位,现为大庆油田副总工程师,主要从事油田开发研究.E-mail:liuhe@petrochina.com.cn
  • 基金资助:
    中国石油天然气股份有限公司科技攻关项目(030133-2)资助

Geological factors for controlling damage of batch casing in the member Ⅱ of Nenjiang Formation in Daqing Oilfield

Liu He1, Liu Jiandong2,4, Zhuo Shengguang3, Jin Yansong1   

  1. 1. Daqing Oilfield Company, Ltd. , Daqing 163712, China;
    2. Research Institute of Petroleum Exploration and Development, CNPC, Beijing 100083, China;
    3. Northeast University at Qinhuangdao, Qinhuangdao 066004, China;
    4. China University of Geosciences, Beijing 100083, China
  • Received:2005-10-15 Revised:2006-02-13 Online:2006-09-25 Published:2010-05-21

摘要: 对套损铅印和多臂井径精确定位分析发现,嫩二套损点集中在其底部标志层段,力学性质属于剪切套损.其中最严重的套损剪切面位于标志层所对应的2.5m视电阻率曲线的6个特征峰值中最高的第3个峰值上.嫩二标志层是一套化石层组合,2.5m视电阻率曲线的6个特征尖峰与地层化石含量密切相关.化石含量越多,电阻率尖峰值越高.嫩二标志层泥岩因富含钙质而坚硬,又因化石沿层理面密集分布而具有薄弱面,且在电阻率最高峰值处表现最薄弱,这是导致成片剪切套损的重要地质因素.在松辽盆地,嫩二标志层沉积于白垩纪最大湖侵时期,沉积环境与沉积特征具有区域上的一致性,这是导致大庆油田在不同区块同一层位发生成片套损的地质基础.

关键词: 大庆油田, 嫩二段, 嫩二标志层, 套管损坏, 视电阻率, 地质因素

Abstract: The analysis on accurate location by lead pattern and multi-arm calliper shows that damage points of casing in the member Ⅱof Nenjiang Formation in Daqing Oilfield are mainly concentrated on N2 marker bed.The damage pattern is shear casing damage.The most serious casing damage sheared at the bedding plane which corresponds to the highest peak of six peaks of 2.5 meters apparent resistivity in N2 marker bed.The N2 marker bed is a set of fossil assembly.The six peaks of 2.5 meters apparent resistivity is closely related to fossil quantity.The more fossil in N2 marker bed,the higher apparent resistivity peaks.Since the N2 marker bed is a kind of hard rock mainly consisting of CaCO3 and SiO2 and also the fossils densely distributed along bedding which would have the weakest plane at the highest peak of apparent resistivity,both hard rock and weak plane are the key geological factors resulting in batch casing damage in N2 marker bed.The N2 marker bed deposited in the period of the largest lake transgression in the Cretaeous,so its depositional environment and characteristics have regional consistent,which is the geological base for resulting in casing damage in the same layer but in different areas in Daqing Oilfield.

Key words: Daqing Oilfield, member Ⅱ of Nenjiang Formation, N2 marker bed, casing damage, apparent resistivity, geological factor

中图分类号: