超高压射流辅助钻井技术研究进展  

RESEARCH DEVELOPMENT OF ULTRAHIGH PRESSURE JET ASSISTING DRILLING TECHNIQUE

作　　者：李帮民[1] 汪志明[1] 薛亮[1] 

机构地区：[1]中国石油大学·北京

出　　处：《钻采工艺》2011年第1期28-31,114,共4页Drilling & Production Technology

基　　金：中国石化研究项目(JP04015)“井底增压钻井技术研究”;教育部创新团队项目(IRT411)

摘　　要：近年来,中国石油大学(北京)针对射流式井下增压器和超高压双流道PDC钻头先后开展了相关理论研究,并取得了突破性进展。综述了截止目前研究中重要的研究成果,包括射流式井下增压器增压原理和公式、射流换向元件水力结构特性(附壁特性和切换特性)、超高压双流道PDC超高压喷嘴结构设计、超高压射流辅助机械齿联合破岩机理,上述四项研究成果丰富和发展了超高压射流理论和PDC钻头超高压射流破岩机理理论,为射流式井下增压器今后的研究和优化奠定了重要的理论基础。In recent years, China University of Petroleum (Beijing) focused on the theoretical researches about the down-hole booster compressor and the ultrahigh pressure PDC bit with dual-flow channel, and made a breakthrough. In this paper, the most important research findings were introduced, including boost principle and formula of down-hole booster compressor, fluidic characteristic of fluidic changeover element(attachment and switch), the structure design of ultrahigh pressure PDC bit with dual-flow channel, and the rock-breaking mechanic of ultrahigh pressure jet assisting drilling. These four theoretical research findings enriched and developed the theoretical research of the ultrahigh pressure jet and rock-breaking mechanic by PDC bit with ultrahigh pressure jet, and established the most important theoretical foundation for the development and optimization of the down-hole booster compressor in the future.

关 键 词：井下增压器 PDC钻头 增压冲程 射流元件 超高压射流 岩石破碎机理 

分 类 号：TE242[石油与天然气工程—油气井工程]