高温小井眼大直径岩心旋转井壁取心仪研制及应用  

Development and Application of Rotary Sidewall Coring Tool for Major Diameter Core of High-Temperature Slim Hole

作　　者：刘铁民[1] 田志宾[1] 黄琳[1] 冯永仁[1] 魏赞庆[1] 贾奇勇 彭硕 Liu Tiemin;Tian Zhibin;Huang Lin;Feng Yongren;Wei Zanqing;Jia Qiyong;Peng Shuo(China Oilfield Services Limited)

机构地区：[1]中海油田服务股份有限公司

出　　处：《石油机械》2024年第3期48-53,共6页China Petroleum Machinery

基　　金：中国海洋石油集团有限公司科技专项“测录试关键技术与装备”(KJGG-2022-1401)。

摘　　要：随着油气勘探开发难度增大,特别是海洋油气勘探开发的不断加大,以及深水井、高温井越来越多,地质方面对电缆测井技术所获取的参数要求也越来越高。为了更好地获取小井眼尺寸井壁岩心样本,助力油气田高效探勘开发,通过对取心仪井下仪器关键零部件电子控制短节和机械液压短节的创新设计与模拟分析,研制了适用于高温、高压、小尺寸井眼的大直径旋转井壁取心仪(MRCT-dumpy)。通过功能测试和5口井作业应用表明,大直径旋转井壁取心仪钻头性能及取心电机性能均得到充分验证,其热管理系统满足作业需要,符合设计要求;该取心仪取心功能正常,最高单趟收获岩心43颗,满足小井眼大直径取心作业要求。该仪器的设计与应用可为后期同类技术的发展提供指导。Along with the increasing difficult exploration and development of petroleum,especially offshore petroleum,as well as the more availability of deep-water and high-temperature wells,the requirements for geolog-ical parameters obtained by wireline logging are getting stringent.In order to effectively obtain core samples of slim hole to facilitate the efficient exploration and development,a maximum diameter rotary sidewall coring tool(MRCT-dumpy)suitable for high-temperature and high-pressure slim holes was developed through innovative design and simulation analysis of the electronic control nipple and mechanical hydraulic nipple of the downhole coring tool.The tool was tested functionally and applied in 5 wells,showing that the bit performance and coring motor performance of the maximum diameter rotary sidewall coring tool are excellent,and the heat management system meets the oper-ation and design requirements.The coring function is normal,taking a maximum of 43 cores in a single trip,meet-ing the major diameter coring operation requirements of slim holes.The design and application of the tool provide guidance for the development of similar technologies in the future.

关 键 词：旋转井壁取心仪 小井眼 大直径 岩心样本 模块化 现场应用 

分 类 号：TE953[石油与天然气工程—石油机械设备]