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1. WO2020139462 - POWER GENERATION USING PRESSURE DIFFERENTIAL BETWEEN A TUBULAR AND A BOREHOLE ANNULUS


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INTERNATIONAL SEARCH REPORT (ISR)
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/US2019/059970 LIH4-64541-WO
International filing date (day/month/year) (Earliest) Priority Date (day/month/year)
06 November 2019 28 December 2018
Applicant
BAKER HUGHES, A GE COMPANY, LLC
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)).
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)).
c.
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 filed or furnished:
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
a.
The figure of the drawings to be published with the abstract is Figure No.     2    
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.
b.
none of the figures is to be published with the abstract.

A. CLASSIFICATION OF SUBJECT MATTER

     E21B 41/00 (2006.01)i; E21B 17/00 (2006.01)i; H02K 35/02 (2006.01)i; H02P 9/02 (2006.01)i
According to International Patent Classification (IPC) or to both national classification and IPC

B. FIELDS SEARCHED

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: electrical power, conductive coil, reciprocating magnetic shuttle, switching assembly, pressure differential

C. DOCUMENTS CONSIDERED TO BE RELEVANT

Category* Citation of document, with indication, where appropriate, of the relevant passages Relevant to claim No.
(1)
Y
US 2011-0155393 A1 (LORETZ et al.) 30 June 2011 paragraphs [0019]-[0039], claims 1-4 and figures 1-4
1-15
(2)
Y
US 2003-0116969 A1 (SKINNER et al.) 26 June 2003 paragraphs [0027]-[0050] and figures 3-4
1-15
(3)
A
WO 2016-094748 A1 (SCHLUMBERGER CANADA LIMITED et al.) 16 June 2016 claims 1-10 and figures 1-5
1-15
(4)
A
WO 2006-085869 A1 (WELLDYNAMICS, INC. et al.) 17 August 2006 claims 1-10 and figures 1-2
1-15
(5)
A
US 5839508 A (TUBEL et al.) 24 November 1998 column 7, line 58 – column 9, line 6 and figures 2-3, 5-6
1-15
*
Special categories of cited documents:
"A"
document defining the general state of the art which is not considered to be of particular relevance
"D"
document cited by the applicant in the international application
"E"
earlier application or patent but published on or after the international filing date
"L"
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)
"O"
document referring to an oral disclosure, use, exhibition or other means
"P"
document published prior to the international filing date but later than the priority date claimed
"T"
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
"X"
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
"Y"
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

D. INFORMATION ON PATENT FAMILY MEMBERS

Patent document cited in search report Publication date
(day/month/year)
Patent family member(s) Publication date
(day/month/year)
US 2011-0155393 A1
30 June 2011
US 8322447 B2
WO 2011-081684 A1
04 December 2012
07 July 2011
US 2003-0116969 A1
26 June 2003
US 6717283 B2
06 April 2004
WO 2016-094748 A1
16 June 2016
GB 2549881 A
GB 2549881 B
US 10082004 B2
US 2016-0168958 A1
01 November 2017
25 July 2018
25 September 2018
16 June 2016
WO 2006-085869 A1
17 August 2006
CA 2596399 A1
CA 2596399 C
DK 1856789 T3
EP 1856789 A4
EP 1856789 A1
EP 1856789 B1
NO 340238 B1
NO 20074452 L
US 7242103 B2
US 2006-0175838 A1
17 August 2006
20 April 2010
03 December 2018
14 September 2016
21 November 2007
15 August 2018
27 March 2017
31 August 2007
10 July 2007
10 August 2006
US 5839508 A
24 November 1998
AU 4923896 A
AU 719755 B2
CA 2187432 A1
CA 2187432 C
EP 0910725 A1
EP 0910725 B1
GB 2302113 A
GB 2302113 B
US 5597042 A
WO 96-24748 A1
27 August 1996
18 May 2000
15 August 1996
15 January 2008
28 April 1999
30 July 2003
08 January 1997
30 June 1999
28 January 1997
15 August 1996
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:
08 April 2020
Date of mailing of the international search report:
08 April 2020
Authorized officer:
LEE, Hun Gil
Telephone No. +82-42-481-8525
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