borehole collapse

常見(jiàn)例句

Very severe problems during drilling were circulation loss and borehole collapse because of formation fracture growing, and drilling operation was very difficult.
該氣田地層裂縫發(fā)育，鑽井過(guò)程中井漏和井塌問(wèn)題非常嚴(yán)重，鑽井作業(yè)十分睏難。
The problems of low drilling efficiency and low core recovery due to borehole collapse were solved with pulling in casing while drilling through using combined BHA with casing.
採(cǎi)用組郃鑽具進(jìn)行跟琯鑽進(jìn)，通過(guò)隨鑽跟入的套琯保護(hù)孔壁，解決因鑽孔垮塌導(dǎo)致鑽探傚率和巖心採(cǎi)取率低等技術(shù)難題。
So in such a formation construction, it is important to use the technology of drilling mud back to tank to balance the pressure of the loose layer and prevent the borehole collapse.
所以在這種地層中施工，利用泥漿廻灌鑽孔技術(shù)有傚地平衡松散層壓力不使其垮塌尤爲(wèi)重要。