Cuttings and core from the drill-holes have intersected conglomerate bands. 鉆粉和巖心已穿過(guò)了礫巖夾層。
This allows the drilling fluid to suspend cuttings when drilling stops. 這一特性使鉆井液在鉆探停止時(shí)仍能使鉆屑懸浮于其中。
A simple laboratory testing method is established,and by means of this method mechanical bond strength is tested between drilling cutting and oilwell cement rock. 在實(shí)驗室內，模擬水泥環(huán)與地層膠結全過(guò)程，分析了泥餅以及采用不同配方的水泥漿，對各種鉆屑與油井水泥膠結強度的影響。
