川渝地区东部目前已完钻井中，废弃井有400多口，占总井数的47。
There are more than 400 abandoned wells among the drilled wells in the east of Sichuan and Chongqing areas, which account for 47.
世界上采用机械采油的井数大约是总生产井数的90％，而采用有杆泵抽油的井数是机械采油井数的80～85％。
The well used mechanical oil pumping hold about 90% to total well and the well used oil pumping with pole hold about 80~85% to well used mechanical oil pumping.
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