发明名称 |
DEVELOPMENT METHOD OF BOTTOM-HOLE ZONE OF TERRIGENOUS OIL FORMATION |
摘要 |
FIELD: oil and gas industry.SUBSTANCE: according to the method of development of bottom-hole zone of terrigenous oil formation, before pumping of acid solution well is killed by solution of alkali metal hydroxide adding potassium and/or natrium chloride in quantity 0-35 wt % to obtain optimum density of composition, then well is pumped with aqueous solution containing 4-8 wt % of chlorhydric acid and 0.5-1.5 wt % of fluorhydric acid adding versene (trilon "B") in quantity 0.01-0.5 wt %, sodium dodecylsulfate in quantity 0.01-0.1 wt %, then aqueous solution of oil wetting agent NG-1 with concentration 0.01-2 wt % is pumped into formation.EFFECT: improving efficiency of development of bottom-hole formation zone due to prevention of sedimentation of reaction products of solution chlorhydric and fluorhydric acid with rock of bottom-hole formation zone, reducing water content of well products due to modification of reservoir rock wetting, hardening of porous medium due to use of hydrophobisated reagents.1 tbl |
申请公布号 |
RU2475638(C1) |
申请公布日期 |
2013.02.20 |
申请号 |
RU20110134140 |
申请日期 |
2011.08.12 |
申请人 |
FEDERAL'NOE GOSUDARSTVENNOE BJUDZHETNOE OBRAZOVATEL'NOE UCHREZHDENIE VYSSHEGO PROFESSIONAL'NOGO OBRAZOVANIJA "SANKT-PETERBURGSKIJ GOSUDARSTVENNYJ GORNYJ UNIVERSITET" |
发明人 |
GLADKOV PAVEL DMITRIEVICH;ROGACHEV MIKHAIL KONSTANTINOVICH;SJUZEV OLEG BORISOVICH;NIKITIN MARAT NIKOLAEVICH;PETRAKOV DMITRIJ GENNAD'EVICH |
分类号 |
E21B43/27;C09K8/72;E21B43/22 |
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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