地址:四川省成都市高新区天府大道北段12号中国石油科技大厦

电话:028-86015441;028-86015319

邮箱:gaskk@petrochina.com.cn

QQ群:489323588

您所在位置:首页->过刊浏览->天勘2019.3


复杂地质条件下地层视倾角的计算及实例分析
Calculating apparent stratigraphic dip under complex geological conditions and case study
彭 平1 吴 萍2 彭 浩3 罗 芳2 王 滢2 师晓蓉1 朱茜霞2
点击:59次 下载:7次
DOI:10.12055/gaskk.issn.1673-3177.2019.03.005
作者单位:1. 中国石油西南油气田分公司勘探开发研究院 2. 中国石油川庆钻探工程有限公司地质勘探开发研究院 3. 中国石油西南油气田分公司开发事业部
中文关键字:复杂高陡构造 地层视倾角 着陆点 剖面恢复法 垂深位移法 曲率半径法
英文关键字:Complex high and steep structure; Apparent stratigraphic dip; Landing site; Section restoration method; Vertical depth displacement method; Curvature radius method
中文摘要:在以往的勘探实践中采用实钻资料计算地层视倾角方法研究较少。在高陡构造高点区域,地震资料反射质量差,无法有效反映地层实际情况,而测井资料受井况条件影响数据往往不齐全。在高陡复杂构造、储层薄的钻井过程中,由于地面环境制约,实施大斜度井、水平井,常常面临构造高点、钻井轨迹方向地层视倾角资料难以精准预测,导致钻井工程的失误。通过对复杂地质条件下地层视倾角的计算方法研究,可以有效的解决这个难题。以XC1 井为例,通过充分利用钻井实施过程中井轨迹实钻资料对目的层顶界着陆点的地层视倾角分别就实钻条件下,采用剖面恢复法、垂深位移法、曲率半径法3 种不同的方法计算着陆点地层视倾角,结果表明:①计算结果与实际较吻合;②该方法的应用有助于高陡复杂构造定向井实施过程中对地质目标靶区的有效控制;③有助于实现大斜度井、水平井工程地质实施水平的整体提升。
英文摘要:Research into some methods for calculating apparent stratigraphic dip based on actual drilling data is fully limited. At most high points of high and steep structures, poor seismic-data reflection quality cannot record actual situation of strata. Moreover, well-logging data is often incomplete affected by well condition. When drilling is carried out in these complex structures or thin reservoirs,constrained by ground environment, those highly deviated and horizontal wells may be failure in precise predicting stratigraphic dip at highs or along drilling trajectory. However, this problem can be solved effectively by a workflow to calculate apparent stratigraphic dip under complex geological conditions. So, taking XC1 well as an example, this dip at landing point on the topmost target was calculated by means of section restoration method, vertical depth displacement method, and curvature radius method. Results show that (1) the calculation results are relatively accordance with actual ones; (2) an application of this workflow is conducive to effectively controlling targets during directional-well drilling in complex high and steep structures; and (3) it's helpful for an overall improving engineering and geology implementation level for highly deviated and horizontal wells.
读者评论

      读者ID: 密码:   
我要评论:
国内统一连续出版物号:CN51-1159/TE |国内发行代码: |国际标准出版物号:ISSN1673-3177 |国际发行代码:
主管单位:中国石油西南油气田公司  主办单位:中国石油西南油气田公司勘探开发研究院
版权所有©2019天然气勘探与开发》编辑部 蜀ICP备10004100号
本系统由北京菲斯特诺科技有限公司设计开发
您是本站第2445539名访问者