Title:
DEGRADABLE FIBER FOR USE IN WELLBORE TREATMENT FLUID, PROCESS FOR MANUFACTURING SAME, AND WELLBORE TREATMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2014/196474
Kind Code:
A1
Abstract:
A degradable fiber which is for use in a wellbore treatment fluid and which is made of a resin that is degradable in a treatment fluid for the recovery of a hydrocarbon resource, characterized in that: the content of oligomer components in the resin forming the outer surface of the fiber is 1 mass% or less; and the birefringence of the fiber is 0.02 or more. A process for manufacturing a degradable fiber for use in a wellbore treatment fluid, wherein: the content of oligomer components in the resin forming the outer surface of undrawn yarn obtained in a spinning step is 1 mass% or less; and in a drawing step, the birefringence of drawn yarn before heat treatment is 0.02 or more. A wellbore treatment method using a wellbore treatment fluid which contains both the degradable fiber and a proppant.
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| JPS62257418 | METHOD FOR DIRECT SPINNING AND DRAWING |
Inventors:
TAKAHASHI TAKEO (JP)
SAIJO HIKARU (JP)
SAITO MIZUKI (JP)
SAIJO HIKARU (JP)
SAITO MIZUKI (JP)
Application Number:
PCT/JP2014/064456
Publication Date:
December 11, 2014
Filing Date:
May 30, 2014
Export Citation:
Assignee:
KUREHA CORP (JP)
International Classes:
D01F6/62; C09K8/12; E21B43/26
Domestic Patent References:
| WO2011016321A1 | 2011-02-10 | |||
| WO2012050187A1 | 2012-04-19 | |||
| WO2012082521A2 | 2012-06-21 | |||
| WO2012082517A2 | 2012-06-21 |
Foreign References:
| JP2012251277A | 2012-12-20 | |||
| JP2003533619A | 2003-11-11 | |||
| US6849582B2 | 2005-02-01 | |||
| US7581590B2 | 2009-09-01 | |||
| US7833950B2 | 2010-11-16 | |||
| US7380601B2 | 2008-06-03 |
Other References:
See also references of EP 3006537A4
Attorney, Agent or Firm:
NOMURA Yasuhide et al. (JP)
Yasuhide Nomura (JP)
Yasuhide Nomura (JP)
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