发明名称 |
TREATMENT METHOD OF BORE-HOLE ZONE |
摘要 |
FIELD: oil and gas industry.SUBSTANCE: treatment method of a bore-hole zone involves the first stage, at which solution of surface-active substance (SAS) 0.5-1.5% in formation water in the volume of 100-200 mis pumped to the well; the second stage, at which there pumped is water solution of hydrochloric acid (10-15%) in the volume based on 0.25-0.5 mper running metre of perforated depth of the formation at initial pressure equal to final pressure at the previous stage; the third stage. At which there pumped is water solution of hydrochloric acid (10-15%) with a retarder of the reaction of acid with rock in the volume of 2-5% of volume of the acid solution in the pumping volume of 1-1.5 mper running metre of the perforated formation depth at initial pressure equal to final pressure at the previous stage; formation water forcing-through in the volume of 100-200 mat initial pressure equal to final pressure of pumping at the previous stage; process exposure during 16-48 hours and bringing the well into operation. Formation water can be pumped in advance to the well till pumping pressure rise at the well head to 1-2 MPa.EFFECT: improving treatment efficiency of a bore-hole zone.2 cl, 3 ex |
申请公布号 |
RU2494246(C1) |
申请公布日期 |
2013.09.27 |
申请号 |
RU20120139854 |
申请日期 |
2012.09.19 |
申请人 |
OTKRYTOE AKTSIONERNOE OBSHCHESTVO "TATNEFT'" IM. V.D. SHASHINA |
发明人 |
TAKHAUTDINOV SHAFAGAT FAKHRAZOVICH;VALIEV FANIS KHAMATOVICH;KHISAMOV RAIS SALIKHOVICH;SALIKHOV ILGIZ MISBAKHOVICH;KALABUKHOV VLADIMIR ALEKSANDROVICH |
分类号 |
E21B43/27 |
主分类号 |
E21B43/27 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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