留西低渗透砂岩油藏压裂技术

Oil Drilling & Production Technology(2011)

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Abstract
留西砂岩油藏具有储层渗透性差、层数多、厚薄不均,且层间矛盾突出等特点。油藏投入开发后,由于注水井吸水困难,导致储层供液能力差,大部分油井处于低产低效开发。采取全井笼统压裂增产措施,不能达到选层、分层改造的目的。针对上述问题,研制出低伤害压裂液和配套工艺,在实施油井多层压裂改造时,通过优选压裂层位,采取不同的压裂工艺组合,取得了较好的增产效果。
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Key words
parameters optimization,low permeability,fracturing fluid,Liuxi sandstone reservoir,fracturing process
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