US 11,680,481 B2
Downhole flowmeter
Harold Pfutzner, Richmond, TX (US); and Mohammed Badri, Al-Khobar (SA)
Assigned to SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US)
Appl. No. 17/59,616
Filed by SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US)
PCT Filed May 29, 2019, PCT No. PCT/US2019/034345
§ 371(c)(1), (2) Date Nov. 30, 2020,
PCT Pub. No. WO2019/232016, PCT Pub. Date Dec. 5, 2019.
Claims priority of provisional application 62/678,474, filed on May 31, 2018.
Prior Publication US 2021/0164341 A1, Jun. 3, 2021
Int. Cl. E21B 47/107 (2012.01); G01F 1/66 (2022.01); G01F 1/667 (2022.01); G01F 1/7082 (2022.01); G01F 1/712 (2006.01); G01F 1/002 (2022.01)
CPC E21B 47/107 (2020.05) [G01F 1/662 (2013.01); G01F 1/667 (2013.01); G01F 1/7082 (2013.01); G01F 1/712 (2013.01); G01F 1/002 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
a first tube configured to receive a downhole fluid from a formation;
a flowmeter including one or more electromagnetic acoustic transducer elements;
a flow control valve; and
a second tube, wherein:
the first tube, the flowmeter, and the flow control valve are located external to the second tube,
the one or more electromagnetic acoustic transducer elements each comprise at least one coil and at least one permanent magnet, and
the one or more electromagnetic acoustic transducer elements are disposed on an outer surface of the first tube such that the at least one coil is disposed between the outer surface of the first tube and the at least one permanent magnet.