APPROACH TO THE CHARACTER AND MECHANISM OF POLYELECTROLYTES COMPLEXES AS USED IN DRILLING FLUIDS

doi:10.3863/j.issn.1000-2634.1999.01.019

西南石油大学学报(自然科学版) ›› 1999, Vol. 21 ›› Issue (1): 74-78.DOI: 10.3863/j.issn.1000-2634.1999.01.019

• 化学工程 • Previous Articles Next Articles

APPROACH TO THE CHARACTER AND MECHANISM OF POLYELECTROLYTES COMPLEXES AS USED IN DRILLING FLUIDS

Wang Shaozhong¹ Hu Xingqi²

Offshore Development Company of Shengli Oilfield

Received:1998-06-24 Revised:1900-01-01 Online:1999-02-20 Published:1999-02-20
Contact: Wang Shaozhong

Abstract

Abstract: Two cation polyelectrolytes were respectively mixed with two anion polyelectrolytes, and the resultant complexes were examined on their ability to stabilize the wall of well and inhibit swelling of clay. Analyses were made on the compatibility, salt resistance and optimum proportions of the polyelectrolytes in the complexes, with the influence of pH taken into consideration.Results of the tests show that the complexes are highly salt-
and acid-resistant and are good in properties of inhibiting clay expansion and upholding the properties of drilling fluid. The mechanism of clay-swell inhibition by the complexes is discussed.

Key words: polyelectrolyte, viscosity, clay expansion, flocculation, mechanism

CLC Number:

TE254.4

Wang Shaozhong Hu Xingqi. APPROACH TO THE CHARACTER AND MECHANISM OF POLYELECTROLYTES COMPLEXES AS USED IN DRILLING FLUIDS[J]. 西南石油大学学报(自然科学版), 1999, 21(1): 74-78.

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APPROACH TO THE CHARACTER AND MECHANISM OF POLYELECTROLYTES COMPLEXES AS USED IN DRILLING FLUIDS

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