Synthesis and Performance Evaluation of Anti Temperature and Salt Resistant Polymer Filtrate Reducer

Abstract

In the experiment, the filtrate loss of synthetic fluid loss control fluid was recorded in room temperature and high temperature in the composite brine base and sodium chloride brine base slurry, and compared with the filtrate loss before base polymer addition. In this way, the effect of filtration loss and salt resistance and temperature resistance of synthetic polymers were evaluated. The influence of the synthesized polymer on the rheological properties of the composite brine was also evaluated by determining the viscosity of the drilling fluid added to the base slurry and polymer. In the end, the structure of the synthetic polymers was characterized through the infrared spectrum, which initially analyzed through the mechanism of its function in reducing the filter loss. Finally, the products produced according to the recipe are given to the site and added to the two wells to record the drilling fluid performance data.

Preparation and evaluation of high‐temperature filtrate reducer for solid‐free water‐based drilling fluid

“…N-isopropyl acrylamide, due to the apparent temperature sensitivity, was often used to make temperature-sensitive smart gels. [28,29] Some hightemperature resistant polymers were prepared by using Nisopropyl acrylamide with natural bentonite particles [30] and nano SiO 2 particles. [31] similarly, methacrylic acid has a typical pH sensitivity to make some functional gels of anti-salt.…”