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1.
公开(公告)号:EP2847499A1
公开(公告)日:2015-03-18
申请号:EP13723628.7
申请日:2013-05-03
发明人: FISHER, Chad, A.
CPC分类号: B65D90/585 , F16K3/0209 , F16K3/03
摘要: Disclosed herein is a gate valve design with a proportionally controlled orifice area. The moving element of the gate is shaped to cooperate with a fixed element so that as the gate opens, the open orifice area changes geometrically.
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公开(公告)号:EP2414092B1
公开(公告)日:2013-04-17
申请号:EP10723258.9
申请日:2010-03-26
CPC分类号: B01F3/1271 , B01F3/1214 , B01F15/00207 , B01F15/00246 , B01F2015/0221 , E21B21/062
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公开(公告)号:EP2414092A1
公开(公告)日:2012-02-08
申请号:EP10723258.9
申请日:2010-03-26
CPC分类号: B01F3/1271 , B01F3/1214 , B01F15/00207 , B01F15/00246 , B01F2015/0221 , E21B21/062
摘要: Methods and systems for blending fluids used in subterranean operations are disclosed. A first portion of a fluid component of the slurry is passed through a non-slurry pump (108) in a first process line (102). A second portion of the fluid component of the slurry is passed to a mixing tub (118) in a second process line (104). A solid component is added to the second portion of the fluid component of the slurry in the mixing tub. The second portion of the fluid component of the slurry is mixed with the solid component in the mixing tub so that the second portion of the fluid component of the slurry has a higher concentration than a desired downhole concentration. The output of the mixing tub is pumped through a slurry pump (122). The output of the slurry pump is diluted by adding the first portion of the fluid component of the slurry from the first process line and the diluted mixture is directed to a high pressure pump.
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