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Part 1:  1  2  3  4  5  6          Part 2:  A  B  C  D  E 
International application No. Applicant's or agent's file reference
PCT/US2016/036765 1392-140.00
International filing date (day/month/year) (Earliest) Priority Date (day/month/year)
09 June 2016
FOR FURTHER ACTION: See Form PCT/ISA/220 as well as, where applicable, item 5 below.
This international search report has been prepared by this International Searching Authority and is transmitted to the applicant according to Article 18. A copy is being transmitted to the International Bureau.
It is also accompanied by a copy of each prior art document cited in this report.
1. Basis of the report
a. With regard to the language, the international search was carried out on the basis of:
the international application in the language in which it was filed.
a translation of the international application into                                          which is the language of a translation furnished for the purposes of international search (Rules 12.3(a) and 23.1(b)).
This international search report has been established taking into account the rectification of an obvious mistake authorized by or notified to this Authority under Rule 91 (Rule 43.6bis(a)).
With regard to any nucleotide and/or amino acid sequence disclosed in the international application, the international search was carried out on the basis of a sequence listing:
2. Certain claims were found unsearchable
3. Unity of invention is lacking
4. Title of the invention
The text is approved as submitted by the applicant.
The text has been established by this Authority to read as follows:
5. Abstract
The text is approved as submitted by the applicant.
The text has been established, according to Rule 38.2, by this Authority as it appears in Box No. IV. The applicant may, within one month from the date of mailing of this international search report, submit comments to this Authority.
6. Drawings
The figure of the drawings to be published with the abstract is Figure No.     1    
as suggested by the applicant.
as selected by this Authority, because the applicant failed to suggest a figure.
as selected by this Authority, because this figure better characterizes the invention.
none of the figures is to be published with the abstract.


     C09K 8/10 (2006.01)i; C09K 8/80 (2006.01)i; E21B 43/267 (2006.01)i
According to International Patent Classification (IPC) or to both national classification and IPC


Minimum documentation searched (classification system followed by classification symbols):
Documentation searched other than minimum documentation to the extent that such documents are included in the fields searched:
Korean utility models and applications for utility modelsJapanese utility models and applications for utility models
Electronic data base consulted during the international search (name of data base and, where practicable, search terms used):
eKOMPASS(KIPO internal) & Keywords: diverter material, aqueous base fluid, psyllium husk particulates, diverter plug, internal breaker, bridging agent, wellbore servicing fluid


Category* Citation of document, with indication, where appropriate, of the relevant passages Relevant to claim No.
US 2015-0210912 A1 (SAUDI ARABIAN OIL COMPANY) 30 July 2015 See paragraphs [0004], [0020], [0030], [0031], [0042]-[0056]; and claims 1-21.
US 2011-0312857 A1 (AMANULLAH, MD. et al.) 22 December 2011 See the whole document.
US 2012-0138299 A1 (JOSEPH, T. et al.) 07 June 2012 See the whole document.
US 2013-0081813 A1 (LIANG, F. et al.) 04 April 2013 See the whole document.
US 2015-0119301 A1 (PREFERRED TECHNILOGY, LLC) 30 April 2015 See the whole document.
Special categories of cited documents:
document defining the general state of the art which is not considered to be of particular relevance
earlier application or patent but published on or after the international filing date
document which may throw doubts on priority claim(s) or which is cited to establish the publication date of another citation or other special reason (as specified)
document referring to an oral disclosure, use, exhibition or other means
document published prior to the international filing date but later than the priority date claimed
later document published after the international filing date or priority date and not in conflict with the application but cited to understand the principle or theory underlying the invention
document of particular relevance; the claimed invention cannot be considered novel or cannot be considered to involve an inventive step when the document is taken alone
document of particular relevance; the claimed invention cannot be considered to involve an inventive step when the document is combined with one or more other such documents, such combination being obvious to a person skilled in the art
document member of the same patent family


Patent document cited in search report Publication date
Patent family member(s) Publication date
US 2015-0210912 A1
30 July 2015
US 9006151 B2
US 2013-065798 A1
WO 2013-039938 A1
14 April 2015
14 March 2013
21 March 2013
US 2011-0312857 A1
22 December 2011
US 8835363 B2
WO 2011-159744 A1
16 September 2014
22 December 2011
US 2012-0138299 A1
07 June 2012
AU 2011-340304 A1
AU 2011-340304 B2
CA 2817852 A1
CA 2817852 C
EP 2649022 A1
JP 2014-507487 A
JP 5826858 B2
MX 2013006309 A
NZ 612407 A
US 8668010 B2
WO 2012-076841 A1
11 July 2013
12 May 2016
14 June 2012
02 August 2016
16 October 2013
27 March 2014
02 December 2015
27 August 2013
27 February 2015
11 March 2014
14 June 2012
US 2013-0081813 A1
04 April 2013
AR 088207 A1
AU 2012-319068 B2
AU 2012-319068 A1
CA 2848383 A1
CA 2848383 C
EP 2748275 B1
EP 2748275 A1
US 8936086 B2
WO 2013-052252 A1
14 May 2014
05 March 2015
11 April 2013
11 April 2013
26 April 2016
28 September 2016
02 July 2014
20 January 2015
11 April 2013
US 2015-0119301 A1
30 April 2015
US 2015-315459 A1
05 November 2015
Name and mailing address of the ISA/:
Korean Intellectual Property Office
189 Cheongsa-ro, Seo-gu, Daejeon Metropolitan City, 302-701
Republic of Korea
Facsimile No. +82-42-481-8578
Date of the actual completion of the international search:
07 March 2017
Date of mailing of the international search report:
07 March 2017
Authorized officer:
KIM, Dong Seok
Telephone No. +82-42-481-5405
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