新型固井冲洗液评价装置适用性分析.pdfVIP

Vol No PET ROL EU M DRIL LING T EC H NIQ U ES Jan doi syztj s Pa mPa s T E A Applicability of a New Device for Cementing Flushing Fluid Evaluation WANG Leding YANG Yuanguang XIE Yingquan TANG Xin Dow nhole Technology Se rv ice B r anch CN PC Bohai D r ill ing Eng inee r ing Co L td T ianj in China Petrole um and Gas Eng inee r ing College Southw es t Petroleum Univ e rs ity Cheng d u S ichuan China Abstract T o clarify the application scope of an innovative evaluation device f or cementing f lushing f lu id a calculation model f or shear rates of New tonian Bingham and pow erlaw f luids on ex ternal w all of the inner barrel w as established in accordance w ith the Robert son Stiff rheological model and w ith considera tion to the equivalent shear rate on ex ternal w all of the inner barrel and on annular sidew all in cementing In addition errors betw een the shear rate of the ex ternal sidew all of inner barrel and that of cementing an nual sidew all under diff erent rheological modes w as analyzed Research result s show ed that the shear rate at the inner w all of the device is equal to that at the cementing interf ace w ith no theoretical error f or New tonian f luids w hile the shear rate of the inner cy linder w all is higher than that on the cementing interf ace and the increase in shear rates is related to the inner and outer cylinder gap and rheological properties of the f lushing f luids f or Bingham and the pow er law f luids When the diamet