发明授权
- 专利标题: Coated and cured proppants
- 专利标题(中): 涂层和固化的支撑剂
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申请号: US13188530申请日: 2011-07-22
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公开(公告)号: US09040467B2公开(公告)日: 2015-05-26
- 发明人: Robert Ray McDaniel , Avis Lloyd McCrary
- 申请人: Robert Ray McDaniel , Avis Lloyd McCrary
- 申请人地址: US PA Radnor
- 专利权人: Preferred Technology, LLC
- 当前专利权人: Preferred Technology, LLC
- 当前专利权人地址: US PA Radnor
- 代理机构: Pepper Hamilton LLP
- 主分类号: C09K8/60
- IPC分类号: C09K8/60 ; C09K8/36 ; E21B43/267 ; C09K8/80
摘要:
Solid proppants are coated with a coating that exhibits the handling characteristics of a precured coating while also exhibiting the ability to form particle-to-particle bonds at the elevated temperatures and pressures within a wellbore. The coating includes a substantially homogeneous mixture of (i) at least one isocyanate component having at least 2 isocyanate groups, and (ii) a curing agent. The coating process can be performed with short cycle times, e.g., less than about 4 minutes, and still produce a dry, free-flowing, coated proppant that exhibits low dust characteristics during pneumatic handling but also proppant consolidation downhole for reduced washout and good conductivity.
公开/授权文献
- US20120283153A1 COATED AND CURED PROPPANTS 公开/授权日:2012-11-08
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