Title:
FLOW QUANTIFICATION METHOD FOR DRILLING FLOW, AND VISCOSITY MONITORING TECHNIQUE USING SAME
Document Type and Number:
WIPO Patent Application WO/2024/075913
Kind Code:
A1
Abstract:
The present invention relates to a flow quantification method for a drilling flow, and a viscosity monitoring technique using same, and to a flow quantification method for a drilling flow in an annular pipe which enables a fluid to flow by means of a pressure difference between an entrance and an exit thereof, and enables the generation of a rotational flow by means of a rotational motion thereof, and a viscosity monitoring technique using same, the present invention comprising: a flow state measurement step for measuring the pressure, flow rate of an entrance and an exit of an annular pipe, and the total torque, number of rotations, pressure drop and flow rate of the annular pipe; an energy dissipation rate calculation step for calculating an energy dissipation rate according to the flow state measured in the flow state measurement step; and a viscous behavior calculation step for calculating an effective shear rate on the basis of the energy dissipation rate, and calculating viscous behavior of a fluid in the annular pipe by means of the effective shear rate. In addition, the viscous behavior calculation step enables the measurement of viscous behavior in a drilling flow in the annular pipe, the drilling flow having a rotational flow and a pressure differential flow occurring in a complex manner. In addition, according to the present invention, the effect is achieved of enabling the calculation and monitoring of the viscous behavior, pressure drop, flow rate and torque of mud which is drilling-flowing in the annular pipe. In addition, the present invention has the effect of enabling the viscosity of mud to be accurately measured even when eccentricity occurs as a result of a bending of the annular pipe.
Inventors:
HWANG WOOK RYOL (KR)
GAO XUESI (KR)
KIM YOUNG JU (KR)
GAO XUESI (KR)
KIM YOUNG JU (KR)
Application Number:
PCT/KR2023/004439
Publication Date:
April 11, 2024
Filing Date:
April 03, 2023
Export Citation:
Assignee:
NAT UNIV GYEONGSANG IACF (KR)
KOREA INST GEOSCIENCE & MINERAL RESOURCES KIGAM (KR)
KOREA INST GEOSCIENCE & MINERAL RESOURCES KIGAM (KR)
International Classes:
G01N11/14; G01D21/02; G01N11/00
Foreign References:
| KR102013036B1 | 2019-10-21 | |||
| US9511510B2 | 2016-12-06 | |||
| US10598581B2 | 2020-03-24 | |||
| US10859481B2 | 2020-12-08 |
Other References:
HAE JIN JO JIN: "In-Situ Process Viscometry of non-Newtonian Fluids in an Agitator", KSME SPRING AND AUTUMN CONFERENCE, vol. 2022, no. 6, 1 June 2022 (2022-06-01), pages 157 - 158, XP093154267
Attorney, Agent or Firm:
KIM, Jong Seok (KR)
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