松辽盆地科学钻探工程松科2井东孔岩心空间归位

发布时间：2018-06-08 07:35

本文选题：大陆科学钻探计划 + 松科井东孔　；参考：《地质科技情报》2017年04期

【摘要】：松辽盆地资源与环境深部钻探工程计划通过两井四孔的连续取心,获得国际上第一个连续的白垩纪陆相沉积记录。作为该项工程的主体钻孔,松科2井东孔采用非定向取心技术钻取营城组至火石岭组的连续岩心;为满足更高精度科学研究的要求,需要获取松科2井东孔岩心的准确深度与方位信息。基于电成像测井图像与岩心扫描图像上的4种典型特征,利用成像-岩心扫描图像综合处理软件开展岩心空间归位工作,完成了松科2井东孔三开中途完井井段的岩心空间归位工作;对归位结果进行了质量评级。结果表明,归位质量等级在AA和AB的岩心占半数以上;粗砂岩、砾岩及火成岩等层段岩心的深度归位比较准确;泥岩、泥质粉砂岩等层段岩心方向定位效果较好。岩心校正深度误差整体上随钻井深度的增加而增加,符合实际规律。岩心空间归位结果为下一步的地质分析及科学研究奠定了基础。
[Abstract]:The deep resource and environment drilling project in Songliao Basin obtained the first continuous Cretaceous continental sedimentary record through the continuous coring of two wells and four holes. As the main borehole of this project, the east hole of Songke 2 adopts non-directional coring technique to drill the continuous core from Yingcheng formation to Huoshiling formation, in order to meet the requirement of higher precision scientific research, It is necessary to obtain accurate depth and azimuth information of the east core of Songke well 2. Based on the four typical features of electrical imaging logging image and core scanning image, the work of core spatial location is carried out by using the comprehensive processing software of image-core scanning image. The work of core space homing in the middle of the opening of the third hole in the east hole of Songke 2 well is completed, and the quality of the return result is rated. The results show that more than half of the cores with homing quality grade are AA and AB, the depth of core of the strata such as coarse sandstone, conglomerate and igneous rock is more accurate, and the direction orientation of mudstone and argillaceous siltstone is better. The error of core correction depth increases with the increase of drilling depth, which accords with the actual law. The results of core spatial homing lay a foundation for further geological analysis and scientific research.
【作者单位】：中国地质大学(北京)地球物理与信息技术学院;中国地质大学(北京)地下信息探测技术与仪器教育部重点实验室;中国地质调查局发展研究中心;
【基金】：中国地质调查局地质调查专项"松辽盆地资源与环境深部钻探工程"(12120113017600)
【分类号】：P634

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