坚硬致密岩层用绳索取心钻头的研制与应用

Development and Application of Wire-line Coring Bit for Hard and Compact Rock Formation

摘要:

为了克服绳索取心钻头钻进坚硬致密岩层出现的进尺缓慢、钻头寿命短的难题，着重从钻头胎体配方、金刚石参数、钻头水口等方面进行优化设计、试验并生产应用，使研制的绳索取心钻头(S77)具备良好的适应性，钻进坚硬～硬、中～弱研磨性岩层克服了“打滑”现象并延长了钻头的寿命，取得了一定的经济效益。

Abstract:

Optimized design and tests were made on bit matrix formula, diamond parameters and bit nozzle to overcome slow drilling footage and short service life of the wire-line coring bit in hard and compact rock formation, the newly developed bit (S77), with good adaptability, overcame the drilling “sliding” in extra-hard to hard and mid to weak-abrasive rock formations.