松辽盆地科学钻探工程松科2井东孔岩心空间归位  

Core Spatial Position Restoring of the CCSD-SK-2 East Borehole in the Songliao Basin of Northeast China

作　　者：李宁[1,2] 邹长春[1,2] 彭诚[1,2] 赵金环[1,2] 牛一雄[3] Li Ning Zou Changchun Peng Cheng Zhao Jinhuan Niu Yixiong(School of Geophysics and Information Technology Key Laboratory of Geo-detection of Ministry of Education, China University of Geosciences（Beijing）, Beijing 100083, China Development and Research Center, China Geological Survey, Beijing 100037, China)

机构地区：[1]中国地质大学(北京)地球物理与信息技术学院,北京100083 [2]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,北京100083 [3]中国地质调查局发展研究中心,北京100037

出　　处：《地质科技情报》2017年第4期271-276,共6页Geological Science and Technology Information

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)

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。The first continuous Cretaceous continental sedimentary record will be obtained by the CCSDSK-2east borehole in the Songliao Basin of northeast China.As the main borehole,SK-2east borehole is drilled by no-directional coring technology to obtain continuous cores from Yingcheng Formation to Huoshiling Formation.In order to meet the requirements of higher precision scientific research,it is necessary to get the accurate information of original depth and orientation of cores.Based on the resistivity image logs and four typical features on core scanning images,core spatial position restoring is conducted by using imaging-core scanning picture processing software.Core spatial position restoring of third measuring intervals of the SK-2east borehole is completed and the restoring results are rated.The results suggest that the number of quality rating above AA and AB is more than half,the depth localization of sand stone,conglomerate and igneous intervals is mostly accurate and the effectiveness of restoring in mudstone and argillaceous siltstone intervals is better.Correction error increases with depth in general,which is consistent with the actual rules.Results of core spatial position restoring facilitates the following geological analysis and scientific research.

关 键 词：大陆科学钻探计划 松科2井东孔 电成像测井 岩心空间归位 

分 类 号：P634[天文地球—地质矿产勘探]