摘要
介绍了川中M 3 8井的基本地质背景和水平层段储层特点。M 3 8井在完井后发现其水平段异常测井响应特征 ,随后以测井资料为主要依据展开了一系列分析 ,通过测井对比及岩相分析落实了异常地层的层位归位问题。通过原因分析 ,包括井眼轨迹参数的对比分析、地层视倾角的确定等 ,找出了造成该井水平段失误的原因 ,指出了针对薄储层进行水平井钻井时应该注意的技术事项。
Introduced are basic geologic background and reservoir characteristics in horizontal beds in Well M38. The abnormal log responses to the beds were found after completion of Well M38. The stratigraphic horizons of abnormal intervals have been determined from log correlation and petrographical analyses. Parameters calculation of borehole trajectory using MWD and well logs as well as the pseudo-dips estimation indicate that real dilling results are quite different from the dilling plans. As a result, the reasons have been found and suggestions on horizontal drilling in such thin beds are proposed.
出处
《测井技术》
CAS
CSCD
2004年第3期206-208,共3页
Well Logging Technology
关键词
水平井
地层响应
随钻测斜
岩相分析
地层视倾角
测井解释
horizontal well
formation response
MWD
petrographical analysis
apparent formation dip
log interpretation
