Formation permeability evaluation and productivity prediction based on mobility from pressure measurement while drilling

SHI Xinlei,CUI Yunjiang,XU Wankun,ZHANG Jiansheng,GUAN Yeqin

Table 1 Operative parameters of pressure measurement while drilling tools.

Oilfield Service Company Pressure measurement while drilling system Pumping rate/(mL·s-1) Pumping volume/mL Test time/s Schlumberger Stetho-Scope 0.20-2.00 0.5-14.5 180-1 200 Halliburton Geo-Tap 0.05-7.70 2.5-50.0 32-4 192 Baker hughes Tes-Trak 0.25-1.00 5.0-10.0 180-1 200