西南石油大学学报(自然科学版) ›› 2006, Vol. 28 ›› Issue (3): 109-112.DOI: 10.3863/j.issn.1000-2634.2006.03.031

• 油气化学工程与化工 • Previous Articles    

STUDY OF SLUDGE DAMAGE MECHANISM FOR PUTAOHUA RESERVOIR IN THE EAST OF DAQING PERIPNFRAL OILFIFID

ZHOU Wan-fu 1,2 KANG Yan2 ZHOU Quan2 et al.

  

  1. (The Chinese Academy of Sciences,Liang-fang Hebei 065007,China )
  • Received:2005-03-16 Revised:1900-01-01 Online:2006-06-20 Published:2006-06-20
  • Contact: ZHOU Wan-fu

Abstract: In order to prevent the acid sludge forming during acidizing treatment for Putaohua formation in Daqing peripheral oilfield, the research on colloid and bitumen in oil , acid system , ferricion and anti-sludge agent has been carried out to determine the possibility of sludge forming. Indoor experiments show that hy-drogen- chloride and mud acid have stronger trend of causing
sludge than phosphoric acid and acetic acid when contact with oil, which produce above 1 g sludge. Additionally the sludge in-creases with the higher concentration of ferric ion, and the spentacid also can produce some sludge, suitable anti-sludge agent can inhibit the forming of sludge obviously. It provides a better theoretical foundation for preventing sludge forming and guaran-teeing the acidizing effect.

Key words: acidizing, sludge, ant-sludge agent, ferricion: acid fluid

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