polymers anionic polyacrylamide for drilling mud chemical additive

polymers anionic polyacrylamide for drilling mud chemical additive
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  • What is modified polyacrylamide drilling fluid?
  • Indeed, modified polyacrylamide drilling fluid has been proven to be of great interest for use in the construction of bored piles and diaphragm walls in recent years. 1. Introduction Drilling fluid is a critical component in exploration and excavation, classified into water-based, oil-based, synthetic-based, and gas-based.
  • Which polymers are used for drilling fluid additives?
  • Both high- and low-molecular-weight polymers are used as drilling fluid additives. Polyacrylamides are known to greatly enhance the drilling speed, are used as flocculants and shale stabilizers, play an important role in fluid loss, and are used as rheology modifiers and dispersants.
  • When was polyacrylamide first used in drilling mud?
  • Polyacrylamides were first introduced as an additive to drilling muds in the 1960s. The polyacrylamide use can be anionic, cationic, or nonionic with various ratios of the comonomers used in the case of the anionic and cationic polymers.
  • What is modified polyacrylamide?
  • There are many drawbacks to the use of bentonite, natural polymer, and synthetic polymer. Consequently, polymer modification is required in drilling nowadays. The modified polyacrylamide reviewed in this paper is a polymer aqueous solution with high molecular weight, which has a similar density as water but a much higher viscosity.