價格：免費
更新日期：2014-04-28
檔案大小：258k
目前版本：1.0
版本需求：Android 2.2 以上版本
官方網站：http://www.oil-shop.net
Email：hipockt@gmail.com
聯絡地址：PO Box 02-5648 Miami Florida 33102-5648
This little app is used to calculate the amount of drill collar weight required to obtain a desired weight on bit when drilling a vertical hole. The app has been tested on several android smart devices.
