国外海洋钻井绳索取心新技术

OVERSEAS OCEAN DRILLING WIRELINE CORING TOOL

介绍了国外"海洋钻井项目"(Ocean Drilling Program-ODP)的4种钻井取心工具,包括活塞取心工具、旋转取心工具、延伸取心工具,井下马达驱动取心工具。这几种取心工具根据取心地层岩性、深度等实际情况与3种类型的取心钻头配合使用。文章概述了这些工具和钻头的结构和性能特点以及适用地层范围,给出部分工具和钻头的具体工作参数,在此基础上还指出这些工具各自的局限性,分析了ODP取心工具对于国内陆地取心的指导意义。

The paper introduced 4 types of coring tools of Ocean Drilling Program-ODP,including advanced piston corer(APC),rotary core barrel(RCB),extended core barrel(XCB)and motor driven core barrel(MDCB).These coring tools could be used with 3 types of core bits.This article summarized the structure features and operation principles,main advantages and disadvantages and application range of these coring tools and bits,and analyzed the meaning of ODP tools for land coring in China.