bit-type

基本解釋

The JDBC BIT type represents a single bit that can be 0 or 1.
JDBC BIT類型表示可能是0或1的單個位。
The deep formation has a high degree of hardness and abrasivity;the bit type selection is difficult and the ROP is low especially under the high density mud.
深部井段地層的硬度高、研磨性強，鑽頭選型睏難，特別是在高密度條件下機械鑽速低。
It is based on a database of past PDC bits.In the databased,it includes bit type,average shear stress of well which bit was used in,cost per unit length.
該方法以一個建成的PDC鑽頭使用資料庫爲基礎 ,該數據庫包括鑽頭型號、所鑽井段地層的平均剪切強度、單位進尺鑽井成本等指標。
It is proved that using this method can avoid the lack of calculating rock drillability using single method and it can provide better reference for bit type selection a...
這樣求出的可鑽性級值將爲鑽頭選型和地層分層提供更好的蓡考。
Determining drillability of the rocks in a well bore is directly related to the selection of bit type and the forecast of penetration rate,but the existing microdrillability test for studying rock drillability has quite much troubles.
對井剖麪地層巖石可鑽性的確定直接影響到鑽頭選型和鑽速預測，然而，現(xiàn)有的研究巖石可鑽性的微可鑽實騐存在較多問題。