发明名称 |
METHOD FOR NEAR WELL-BORE TREATMENT WITH ACID |
摘要 |
FIELD: oil and gas industry.SUBSTANCE: method for near well-bore treatment with acid involves at the first stage pumping into the well of 10-15% aqueous solution of hydrogen chloride in a volume calculated on the basis of 0.25-0.5 mper 1 running metre of penetrated stratum depth; at the second stage - pumping of 10-15% aqueous solution of hydrogen chloride with a retarder of the acid reaction with rock in the volume of 2-5% of acid solution volume in total volume of pumping calculated on the basis of 1-1.5 mper 1 running metre of penetrated stratum depth at initial pressure equal to the final pressure value during pumping at the previous stage; overflushing by oil in volume of 5-15 mat initial pressure equal to the final pressure value during pumping at the previous stage; soaking during 16-48 hours and input of the well into operation.EFFECT: improvement in efficiency of near-wellbore treatment.3 ex |
申请公布号 |
RU2490444(C1) |
申请公布日期 |
2013.08.20 |
申请号 |
RU20120139855 |
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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