发明名称 METHOD FOR WELL CEMENTATION
摘要 FIELD: mining industry. ^ SUBSTANCE: according to the method, cement solution and pushing liquid are treated. Cement solution is fed into casing column and pushed by pushing liquid into behind-pipe space. Before pumping of cement solution into casing column and following pushing of it by pushing liquid into behind0pipe space washing of well is performed by washing liquid in amount of no less than two well volumes. Washing liquid is previously treated in field of electrical current of diaphragm electrolyzer in zone of positive electrode up to value of redox-potential within limits from +600 to 800 mV. ^ EFFECT: lesser thickness of argillaceous crust on well wall and of argillaceous film on outer surface of casing pipes and reliable providing for stated value of redox-potential of +600 to +800 mV on outer surface of casing pipes and on well wall.
申请公布号 RU2235859(C2) 申请公布日期 2004.09.10
申请号 RU20020130070 申请日期 2002.11.10
申请人 发明人 BEKMETOV A.M.;CHERNOIVANOV V.V.
分类号 E21B33/14 主分类号 E21B33/14
代理机构 代理人
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