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International application No. Applicant's or agent's file reference
PCT/US2018/068101 2017101705U1
International filing date (day/month/year) (Earliest) Priority Date (day/month/year)
31 December 2018
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.     3    
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.


     G01V 1/46 (2006.01)i; G01V 1/50 (2006.01)i; G01V 1/52 (2006.01)i; E21B 47/00 (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 models
Japanese 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: shear velocity, velocity dispersion, flexural wave, reference, linear approximation model, wavelength dependent perturbation value, dispersion curve


Category* Citation of document, with indication, where appropriate, of the relevant passages Relevant to claim No.
US 2014-0369165 A1 (SCHLUMBERGER TECHNOLOGY CORPORATION) 18 December 2014 See paragraphs [0035]-[0039], [0078]-[0083], claims 1, 11, and figure 8.
US 2006-0256656 A1 (SINHA et al.) 16 November 2006 See paragraphs [0015], [0058], [0068], [0089] and claims 1, 18.
WO 2018-080486 A1 (HALLIBURTON ENERGY SERVICES, INC.) 03 May 2018 See paragraphs [0023]-[0025], claim 1, and figures 2-3.
US 2015-0049585 A1 (COLLINS et al.) 19 February 2015 See paragraphs [0024]-[0025], [0035]-[0038], claims 1-9, and figure 7.
US 2010-0085835 A1 (TANG et al.) 08 April 2010 See paragraph [0058], claims 1-16, and figure 6.
Special categories of cited documents:
document defining the general state of the art which is not considered to be of particular relevance
document cited by the applicant in the international application
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 2014-0369165 A1
18 December 2014
BR 112015030710 A2
CA 2913289 A1
CN 105452903 A
CN 105452903 B
GB 2535276 A
NO 20151646 A1
US 9417352 B2
WO 2014-201214 A1
25 July 2017
18 December 2014
30 March 2016
08 August 2017
17 August 2016
02 December 2015
16 August 2016
18 December 2014
US 2006-0256656 A1
16 November 2006
CA 2542531 A1
CA 2542531 C
GB 2426052 A
GB 2426052 B
US 7463550 B2
10 November 2006
05 July 2016
15 November 2006
19 September 2007
09 December 2008
WO 2018-080486 A1
03 May 2018
FR 3057902 A1
US 2019-0219718 A1
27 April 2018
18 July 2019
US 2015-0049585 A1
19 February 2015
AU 2012-376243 A1
AU 2012-376243 B2
CA 2866839 A1
EP 2834680 A1
EP 2834680 A4
MX 336188 B
MX 2014011338 A
US 9529105 B2
WO 2013-151531 A1
18 September 2014
30 July 2015
10 October 2013
11 February 2015
27 January 2016
06 January 2016
05 December 2014
27 December 2016
10 October 2013
US 2010-0085835 A1
08 April 2010
BR PI0920220 A2
GB 2476012 A
GB 2476012 B
NO 20110375 A1
NO 341681 B1
US 8456952 B2
WO 2010-040087 A2
WO 2010-040087 A3
29 December 2015
08 June 2011
10 October 2012
19 April 2011
18 December 2017
04 June 2013
08 April 2010
01 July 2010
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:
25 September 2019
Date of mailing of the international search report:
26 September 2019
Authorized officer:
BAHNG, Seung Hoon
Telephone No. +82-42-481-5659
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