PDC钻头随钻地震技术在胜利油田某井区的应用探索  

Application of PDC Bit SWD Technology in a Well Area of Shengli Oilfield

作　　者：童思友[1,2] 石辉 徐秀刚 王延光[3] 谷玉田 孙超[4] Tong Siyou;Shi Hui;Xu Xiugang;Wang Yanguang;Gu Yutian;Sun Chao(The Key Laboratory of Submarine Geosciences and Prospecting Techniques,Ministry of Education,College of Marine Geosciences,Ocean University of China,Qingdao 266100,China;Laboratory for Marine Mineral Resources,Pilot National Laboratory for Marine Science and Technology(Qingdao),Qingdao 266237,China;Sinopec Shengli Oil Field Branch,Dongying 257000,China;Hainan Branch,CNOOC China Limited,Haikou 570312,China)

机构地区：[1]中国海洋大学海洋地球科学学院,海底科学与探测技术教育部重点实验室,山东青岛266100 [2]青岛海洋科学与技术试点国家实验室海洋矿产资源评价与探测技术功能实验室,山东青岛266237 [3]中国石油化工股份有限公司胜利油田分公司,山东东营257000 [4]中海石油(中国)有限公司海南分公司,海南海口570312

出　　处：《中国海洋大学学报（自然科学版）》2023年第11期152-161,共10页Periodical of Ocean University of China

基　　金：国家自然科学基金项目(42074140)资助。

摘　　要：本文分析了聚晶金刚石复合片钻头(Polycrystalline diamond compact bit,PDC)破岩机制以及钻进过程中所产生的波场特征,采集获得了波场信息丰富的三分量随钻地震数据,经精细预处理后,成功分离获得高信噪比横波信息,基于此求取了精度较高的横波层速度,进而实现了PDC钻头随钻地震资料反射波成像,实现了PDC钻头随钻地震在胜利油田某井区的成功应用。本文技术的成功探索,为我国石油钻井中PDC钻头随钻地震的工程应用指明了方向。Seismic while drilling(SWD)is an interdisciplinary technology integrating oil drilling engineering and seismic exploration.Drill bit SWD(RVSP while drilling)is the main method of SWD technology.Most of the previous research on drill bit SWD technology was mainly based on the rock breaking mechanism of cone bit.With the innovation and development of drilling technology,Polycrystalline Diamond Compact bit(PDC bit)which gradually replaces cone bit in oil drilling,is widely used.The seismic while drilling based on PDC bit mainly needs to use S-wave information.If we continue to use the seismic while drilling acquisition and processing technology based on cone bit mainly receiving P-wave,we can not get ideal results,and this technology is in the exploration stage at home and abroad.In this context,this paper analyzes the rock breaking mechanism of PDC bit and the characteristics of wave field generated in the drilling process,and obtains the three-component SWD data with plenty of wave field information.After preprocessing,the shear wave information with high signal-to-noise ratio is successfully separated.Then the shear wave layer velocity with high precision is obtained,and the reflected wave imaging of PDC bit SWD data is realized.Finally the successful application of PDC bit SWD in a well area of Shengli Oilfield is realized.The successful exploration of this technology points out the direction for the engineering application of PDC bit while drilling seismic in oil drilling in China.

关 键 词：随钻地震 聚晶金刚石复合片钻头 横波成像 波场分离 

分 类 号：P631.4[天文地球—地质矿产勘探]