绳索取心钢球偏斜技术原理及应用

Principle of Deflection Technology of Wire-line Coring with Steel Ball and the Application

摘要:

在贵州某磷矿区钻孔施工中，由于地层水敏性导致钻孔出现掉块、坍塌，局部超径、沉渣增多等，发生钻具扭断、埋钻等事故。采用绳索取心钢球支撑小径锥面钻头定位偏斜技术对事故进行处理，经济有效。

Abstract:

Because of the blockfalling, collapsing, local oversizing and more sediment in water sensitive formation, drilling broken and burying drilling occurred in the boring construction in a phosphate mine in Guizhou. Small diameter cone bit positioning deflection by wireline coring with steel ball supporting was used to solve the problem economically.