STRUCTURE-PROPERTY RELATIONSHIP OF POLYELECTROLYTES AND ITS APPLICATION IN STABILIZING DRILLING-MUD IN PRESENCE OF SALTS*

LI Zhuomei; ZHANG Xuexin; XIE Zhiming; HUANG Yuhui

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STRUCTURE-PROPERTY RELATIONSHIP OF POLYELECTROLYTES AND ITS APPLICATION IN STABILIZING DRILLING-MUD IN PRESENCE OF SALTS*

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- STRUCTURE-PROPERTY RELATIONSHIP OF POLYELECTROLYTES AND ITS APPLICATION IN STABILIZING DRILLING-MUD IN PRESENCE OF SALTS*
- Vol. 8, Issue 3, Pages: 204-210(1990)
- Affiliations：
  
  1. Institute of Polymer Science, Zhongshan University, Cuangzhou
  2. Zhongshan University
  3. Guangzhou
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：20 September 1990
- Accepted：
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[1]李卓美,张雪馨,谢志明,黄玉惠.STRUCTURE-PROPERTY RELATIONSHIP OF POLYELECTROLYTES AND ITS APPLICATION IN STABILIZING DRILLING-MUD IN PRESENCE OF SALTS[J].Chinese Journal of Polymer Science,1990,{4}(03):204-210.

LI Zhuomei, ZHANG Xuexin, XIE Zhiming, et al. STRUCTURE-PROPERTY RELATIONSHIP OF POLYELECTROLYTES AND ITS APPLICATION IN STABILIZING DRILLING-MUD IN PRESENCE OF SALTS*[J]. 1990, 8(3): 204-210.
[1]李卓美,张雪馨,谢志明,黄玉惠.STRUCTURE-PROPERTY RELATIONSHIP OF POLYELECTROLYTES AND ITS APPLICATION IN STABILIZING DRILLING-MUD IN PRESENCE OF SALTS[J].Chinese Journal of Polymer Science,1990,{4}(03):204-210. DOI：

LI Zhuomei, ZHANG Xuexin, XIE Zhiming, et al. STRUCTURE-PROPERTY RELATIONSHIP OF POLYELECTROLYTES AND ITS APPLICATION IN STABILIZING DRILLING-MUD IN PRESENCE OF SALTS*[J]. 1990, 8(3): 204-210. DOI：

摘要

正

A new polyelectrolyte （SPU） has been prepared. It can depress the water-loss of drilling-mud much more effective than the commonly used acrylic polyelectrolytes even in 30% NaCl solution. SPU has phenyl group in the backbone with -SO

in the side chain while the acrylic polyelectrolytes have C—C and -COO

respectively

there exists an intrinsic relationship between the structure of polymer and its tolerance to salts

it has been found: 1) The adsorption amount of polymer on clay is related closely to the flexibility of polymer chain. 2) The salt-tolerance of -SO

is superior to -COO-. 3) Both SPU-mud and HPAN-mud are plastic fluids. The dependence of yield point on salts relates to the molecular weight of polymer and hydration of ionogenic group

which is quite different for SPU-mud and HPAN-mud. 4 ) The extent of raising zeta-potential of base-mud by SPU is greater than by HPAN

but the extent of dropping zeta-potential of SPU-mud by NaCI is smaller than HPAN-mud. According to these results we suppose the salt-tolerance of SPU-mud is attributed mainly to hydration of -SO

and that of HPAN-mud mainly to network structure formed in the drilling-mud.

Abstract

in the side chain while the acrylic polyelectrolytes have C—C and -COO

respectively

there exists an intrinsic relationship between the structure of polymer and its tolerance to salts

it has been found: 1) The adsorption amount of polymer on clay is related closely to the flexibility of polymer chain. 2) The salt-tolerance of -SO

is superior to -COO-. 3) Both SPU-mud and HPAN-mud are plastic fluids. The dependence of yield point on salts relates to the molecular weight of polymer and hydration of ionogenic group

which is quite different for SPU-mud and HPAN-mud. 4 ) The extent of raising zeta-potential of base-mud by SPU is greater than by HPAN

but the extent of dropping zeta-potential of SPU-mud by NaCI is smaller than HPAN-mud. According to these results we suppose the salt-tolerance of SPU-mud is attributed mainly to hydration of -SO

and that of HPAN-mud mainly to network structure formed in the drilling-mud.

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