( 12 ) United States Patent
`Oehring et al .
`
`( 10 ) Patent No .: US 11,208,878 B2
`( 45 ) Date of Patent :
`Dec. 28 , 2021
`
`US011208878B2
`
`( 54 ) MODULAR SWITCHGEAR SYSTEM AND
`POWER DISTRIBUTION FOR ELECTRIC
`OILFIELD EQUIPMENT
`( 71 ) Applicant : U.S. Well Services , LLC , Houston , TX
`( US )
`( 72 ) Inventors : Jared Oehring , Houston , TX ( US ) ;
`Brandon N. Hinderliter , Houston , TX
`( US ) ; Lon Robinson , Houston , TX
`( US )
`( 73 ) Assignee : U.S. Well Services , LLC , Houston , TX
`( US )
`Subject to any disclaimer , the term of this
`patent is extended or adjusted under 35
`U.S.C. 154 ( b ) by 0 days .
`( 21 ) Appl . No .: 16 / 597,014
`( 22 ) Filed :
`Oct. 9 , 2019
`( 65 )
`Prior Publication Data
`Apr. 9 , 2020
`US 2020/0109617 A1
`
`( * ) Notice :
`
`Related U.S. Application Data
`( 60 ) Provisional application No. 62 / 743,360 , filed on Oct.
`9 , 2018 , provisional application No. 62 / 743,299 , filed
`on Oct. 9 , 2018 .
`( 51 ) Int . Ci .
`E21B 43/26
`F04B 17/03
`
`( 2006.01 )
`( 2006.01 )
`( Continued )
`( 52 ) U.S. CI .
`E21B 43/26 ( 2013.01 ) ; F02B 63/047
`CPC
`( 2013.01 ) ; F02B 63/06 ( 2013.01 ) ; F04B 1/00
`( 2013.01 ) ;
`
`( Continued )
`
`( 58 ) Field of Classification Search
`CPC
`F04B 17/06 ; F04B 17/03 ; FO2B 63/047 ;
`FO2B 63/06 ; E21B 43/26
`See application file for complete search history .
`References Cited
`U.S. PATENT DOCUMENTS
`
`( 56 )
`
`1,656,861 A
`1,671,436 A
`
`1/1928 Leonard
`5/1928 Melott
`( Continued )
`FOREIGN PATENT DOCUMENTS
`
`CA
`CA
`
`11/2001
`2406801
`12/2010
`2707269
`( Continued )
`
`OTHER PUBLICATIONS
`Non - Final Office Action issued in U.S. Appl . No. 14 / 881,535 dated
`May 20 , 2020 .
`
`( Continued )
`Primary Examiner Christopher S Bobish
`( 74 ) Attorney , Agent , or Firm — Hogan Lovells US LLP
`( 57 )
`ABSTRACT
`A hydraulic fracturing system for fracturing a subterranean
`formation includes a support structure that includes an
`electric powered pump , arranged in a first area , the electric
`powered pump powered by at least one electric motor , also
`arranged in the first area . The system further includes a
`variable frequency drive ( VFD ) , arranged in a second area
`proximate the first area , connected to the at least one electric
`motor to control the speed of the at least one electric motor .
`The system includes a transformer , arranged in a third area
`proximate the second area . The system also includes a
`cooling system , arranged in a fourth area proximate the third
`area , the cooling system providing a cooling fluid to the
`VFD via one or more headers .
`10 Claims , 15 Drawing Sheets
`
`a
`
`a
`
`422
`418
`
`416
`
`426
`
`-424
`
`406
`
`414
`
`412
`
`404 430
`
`O
`
`O
`
`O
`
`O
`
`430
`
`402
`
`420
`
`-400
`
`428
`
`430
`
`408
`
`LIBERTY EXHIBIT 1001, Page 1
`
`

`

`US 11,208,878 B2
`Page 2
`
`( 51 ) Int . Ci .
`F04B 17/06
`F04B 1/00
`F04B 15/02
`HO2B 13/00
`HOIF 27/02
`HOZG 3/04
`HO2B 1/20
`HOIF 38/14
`F02B 63/04
`F02B 63/06
`( 52 ) U.S. Ci .
`CPC
`
`( 56 )
`
`( 2006.01 )
`( 2020.01 )
`( 2006.01 )
`( 2006.01 )
`( 2006.01 )
`( 2006.01 )
`( 2006.01 )
`( 2006.01 )
`( 2006.01 )
`( 2006.01 )
`F04B 15/02 ( 2013.01 ) ; F04B 17/03
`( 2013.01 ) ; F04B 17/06 ( 2013.01 ) ; HOIF
`27/02 ( 2013.01 ) ; HOIF 38/14 ( 2013.01 ) ;
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`

`

`E21B 43/267
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`US 11,208,878 B2
`Page 3
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