Purpose and approach of the reserve estimation Since the three largest petroleum companies of China were successively listed in AMEX from the year 2000,the prov
The radiation shielding efficiency of material depends upon photon attenuation, exposure buildup factors and neutron removal capacity. A newly developed Pb-free
Wellblock Fan 116 is located in northern Boxing subsag of Dongying Sag,Jiyang Depression.The structural feature of sandbody in the second sand group of the midd