发明授权
US07635028B2 Acidic internal breaker for viscoelastic surfactant fluids in brine
失效
用于盐水中粘弹性表面活性剂流体的酸性内部破碎剂
- 专利标题： Acidic internal breaker for viscoelastic surfactant fluids in brine
- 专利标题（中）： 用于盐水中粘弹性表面活性剂流体的酸性内部破碎剂
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申请号： US11770442申请日： 2007-06-28
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公开(公告)号： US07635028B2公开(公告)日： 2009-12-22
- 发明人: Leiming Li , Lijun Lin , Carlos Abad , Toan Bui
- 申请人： Leiming Li , Lijun Lin , Carlos Abad , Toan Bui
- 申请人地址： US TX Sugar Land
- 专利权人： Schlumberger Technology Corporation
- 当前专利权人： Schlumberger Technology Corporation
- 当前专利权人地址： US TX Sugar Land
- 代理商 Dave Cate; Robin Nava; Charlotte Rutherford
- 主分类号： E21B43/25
- IPC分类号： E21B43/25 ; E21B43/26 ; C09K8/60 ; C09K8/70
摘要：
Compositions and methods are given for delayed breaking of viscoelastic surfactant gels inside formation pores, particularly for use in hydraulic fracturing. Breaking inside formation pores is accomplished without mechanical intervention or use of a second fluid. Acidic internal breakers such as sulfuric acid and nitric acid are used. The break may be accelerated, for example with a free radical propagating species, or retarded, for example with an oxygen scavenger.