Rheological Behaviors of Bio-degradable Drilling Fluids in Horizontal Drilling of Unconsolidated Coal Seams

Cai, Jihua; Gu, Shuai

doi:10.5815/ijitcs.2011.03.01

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“…Recently, biopolymers different from xanthan gum in origin and molecular structure have been used by various industries [15,16]. According to [15,17], such substances exhibit a high thickening ability and may have a different rheological behavior.…”

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confidence: 99%

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To the assessment of thermal stability of biopolymer systems

Myslyuk,

Zholob

2023

jhpe

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To diagnose thermal stability based on rotational viscometry data, an integral index for assessing the rheological properties of drilling fluids has been proposed. It is independent of their rheological model under thermobaric conditions of the well. According to the laboratory research of xanthan gum-based biopolymer systems, the possibility of assessing thermal stability in regard to the dependence of the integral index on temperature has been shown. The accuracy of thermal stability assessment has been confirmed by laboratory studies of the Biocar-TF biopolymer system at temperatures up to 170 ℃.

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“…According to [15,17], such substances exhibit a high thickening ability and may have a different rheological behavior. Data on the attempts to develop biopolymer systems based on them [15,16,18] is available. Thus, the method used to determine the ultimate thermal stability for such systems may differ.…”

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confidence: 99%