HFS绳索取心孔底局部反循环三合管组合取心钻具

HFS Triple Pipe Composite Coring Tool with Bottom Partial Reverse Circulation for Wire-line Coring

摘要:

介绍了研制成功的HFS绳索取心孔底局部反循环三合管组合取心钻具的结构和工作原理，喷反元件参数设计，及其室内模拟试验和现场试验情况。

Abstract:

The article introduces the successful development of HFS triple pipe composite coring tool with bottom partial reverse circulation for wire-line coring and its structure, working principle, parameter design of jet-type reverse circulation elements as well as in-door simulation test and field test.