Rheological Property Measurement and Application of Formate-Based Drilling Fluids at Elevated Temperatures: A Review

Enhancing drilling mud performance through CMITS-modified formulations: rheological insights and performance optimization

“…In addition, when the carboxymethyl functional group is added to starch, its bacterial resistance also increases. [15][16][17] Several researchers have emphasized the signicance of modied starches, [18][19][20][21][22] cellulose derivatives, 7,23,24 and native biomaterials 25,26 for enhancing the rheological properties of mud. Nevertheless, there remains a necessity to enhance the temperature and salt resistance characteristics of these muds, particularly for their application in deep well drilling.…”

“…13 It is important to maintain the stability of non-damaging muds' rheological characteristics at high temperatures. 14,15 In addition, the existence of excessive salts at the subsurface also impairs the rheological properties of mud containing starch and other biopolymers. The salt resistance has a detrimental influence on the mud's rheology, which ultimately lowers the mud's filtration characteristics and leads to higher fluid loss into the formation.…”

“…In addition, when the carboxymethyl functional group is added to starch, its bacterial resistance also increases. 15–17…”