Research and Application of Acidizing Treatment Technology in Niu 35 Block of Shengli Oilfield

doi:10.3863/j.issn.1000-2634.2008.03.017

西南石油大学学报(自然科学版) ›› 2005, Vol. 27 ›› Issue (3): 54-56.DOI: 10.3863/j.issn.1000-2634.2008.03.017

• 石油与天然气工程 • Previous Articles Next Articles

Research and Application of Acidizing Treatment Technology in Niu 35 Block of Shengli Oilfield

ZHAO Lei^1,2 HU Yong-quan² ZHANG Ding-yong¹ et al

Xianhe Oil Production Factory of Shengli Oilfield, Dongying Shandong 257000, China

Received:2004-06-12 Revised:1900-01-01 Online:2005-06-20 Published:2005-06-20

Abstract

Abstract: Considering the characteristics of small pore throat radius, high mud content and tiny hole development in Niu 35 Block of Shengli Oilfield, the acidizing experiments in lab have been conducted by use of several kinds of acidizing fluids, including merchandise acid, hydrochloric acids and mud acid fluids with different concentrations. Results have shown that medium-concentration hydrochloric acids and mud acid fluid have a good comprehensive acidizing effects, 1.5% XFZ1 is used as iron-ion stabilizer, 4% CHG as mutual solvent and 1%～2% NH₄Cl as clay stabilizer. The determined acidizing fluid formulation has better properties, such as low surface tension and corrosion rate. In oilfield treatment, ideal acidizing effects have been made by combining artificial lift technology with liquid CO₂.

Key words: Niu 35 Block, acidizing, acidizing fluid, permeability, additives

CLC Number:

TE357.24

ZHAO Lei;HU Yong-quan ZHANG Ding-yong et al. Research and Application of Acidizing Treatment Technology in Niu 35 Block of Shengli Oilfield[J]. 西南石油大学学报(自然科学版), 2005, 27(3): 54-56.

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Research and Application of Acidizing Treatment Technology in Niu 35 Block of Shengli Oilfield

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