Design, Construction, and Operation of an Apparatus to Measure Viscosity and Screen Factor of Polymer Solutions at High Temperatures: Topical Report

摘要

Water-soluble polymers for applications in harsh reservoirs (high-temperature, salinity, and hardness) for mobility control or profile modification are being developed and manufactured by many chemical companies. For screening the newly developed polymers, apparatuses that can be used to determine the rheological properties of polymers under simulated harsh reservoir conditions are needed. In FY86, a high-temperature apparatus was constructed for this purpose. It consists of a capillary viscometer for measuring the viscosity and a screen-factor viscometer for measuring the screen factor. This report describes the design, construction and operating procedures for this apparatus. The apparatus can be operated at temperatures up to 392 deg F. Viscosities can be determined at shear rates from those encountered in the formation (0.1 to 10 sec sup -1 ) to those encountered in the near-wellbore region (greater than 500 sec sup -1 ). 15 refs., 4 figs., 3 tabs. (ERA citation 12:017816)