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1. (WO2018086106) CLAY STABILIZER FOR OIL FIELD

Pub. No.:    WO/2018/086106    International Application No.:    PCT/CN2016/105662
Publication Date: Fri May 18 01:59:59 CEST 2018 International Filing Date: Tue Nov 15 00:59:59 CET 2016
IPC: C09K 8/575
C09K 8/60
Applicants: JIANGSU HUAAN SCIENTIFIC RESEARCH DEVICES CO., LTD
江苏华安科研仪器有限公司
Inventors: ZHANG, Jianhua
张建华
GU, Jisheng
顾吉胜
Title: CLAY STABILIZER FOR OIL FIELD
Abstract:
Disclosed in the present invention is a clay stabilizer for an oil field. The clay stabilizer for an oil field comprises the following components in percentages by mass: 3% to 12% of ammonium chloride, 15% to 25% of small cationic surfactant, 3% to 10% of isopropyl alcohol, 1% to 5% of inorganic salt, and 60% to 70%deionized water. The clay stabilizer for an oil field has the advantages: the binding agent in the present invention has good weather resistance and acid and alkali resistance, is water-soluble, is easy to be applied on site, is colorless and tasteless, is non-toxic and harmless, and has stable nature; the invention has a better anti-swelling effect and better anti-swelling durability than other types of clay stabilizer used in the same block, and is especially suitable for low-permeability reservoirs.