Abstract

Downhole high-temperature environment is an important factor affecting the performance of downhole electronic system. At present, various active cooling technologies and passive cooling technologies have been proposed to reduce the temperature of downhole electric circuit system. However, passive cooling technologies can only provide limited cooling capacity for drilling tools under high-temperature environment, and the duration of cooling is short, which cannot meet the long-time drilling task. This paper presents an active cooling system (ACS) for downhole electronics and the effects of different temperatures on the performance of electronic components are analyzed. The ACS mainly includes a micro supercharger, condenser tube, evaporation pipe, capillary tube, and refrigerant. The theoretical analysis of heat transfer and refrigerant capacity in high-temperature environment is carried out. The thermal characteristics of the ACS are evaluated experimentally. The results show that the temperature of electronic components can be reduced to below 163 °C in the 200 °C downhole environment and components. The geomagnetic field data measured by electronic components at room temperature, 200 °C and with ACS are compared. The results show that ACS can keep electronic components working normally.

References

1.
Stefano
,
S.
,
Just
,
N. A.
,
Carsten
,
N.
, and
Kurt
,
E.
,
2018
, “
Design and Testing of a Heat Transfer Sensor for Well Exploration Tools
,”
Appl. Therm. Eng.
,
141
(
6
), pp.
887
897
.
2.
Wang
,
L.
,
Zhang
,
C.
,
Gao
,
S.
,
Wang
,
T.
,
Lin
,
T.
, and
Li
,
X.
,
2016
, “
Application of Fast Dynamic Allan Variance for the Characterization of FOGs-Based Measurement While Drilling
,”
Sensors
,
16
(
12
), p.
2078
.
3.
Yang
,
M.
,
2019
, “
Study on Coding and Controlling Technologies of Wireless Measurement While Drilling System
,”
IOP Conf. Ser.: Earth Environ. Sci.
,
237
(
3
), p.
032121
.
4.
Saasen
,
A.
,
Ding
,
S. X.
,
Amundsen
,
P. A.
, and
Tellefsen
,
K.
,
2016
, “
The Shielding Effect of Drilling Fluids on Measurement While Drilling Tool Downhole Compasses—The Effect of Drilling Fluid Composition, Contaminants, and Rheology
,”
ASME J. Energy Resour. Technol.
,
138
(
5
), p.
052907
.
5.
Cheng
,
W. L.
,
Nian
,
Y. L.
,
Li
,
T. T.
, and
Wang
,
C. L.
,
2014
, “
A Novel Method for Predicting Spatial Distribution of Thermal Properties and Oil Saturation of Steam Injection Well From Temperature Logs
,”
Energy
,
66
, pp.
898
906
.
6.
Werner
,
M. R.
, and
Fahrner
,
W. R.
,
2001
, “
Review on Materials, Microsensors, Systems and Devices for High-Temperature and Harsh-Environment Applications
,”
IEEE Trans. Ind. Electron.
,
48
(
2
), pp.
249
257
.
7.
Sinha
,
A.
, and
Joshi
,
Y. K.
,
2011
, “
Downhole Electronics Cooling Using a Thermoelectric Device and Heat Exchanger Arrangement
,”
ASME J. Electron. Packag.
,
133
(
4
), p.
041005
.
8.
Yzl
,
A.
,
Xsz
,
A.
,
Feng
,
W. B.
, and
Xhs
,
C.
,
2020
, “
Performance Study of Phase Change Materials Coupled With Three-Dimensional Oscillating Heat Pipes With Different Structures for Electronic Cooling
,”
Renewable Energy
,
154
, pp.
636
649
.
9.
Emam
,
M.
,
Ookawara
,
S.
, and
Ahmed
,
M.
,
2019
, “
Thermal Management of Electronic Devices and Concentrator Photovoltaic Systems Using Phase Change Material Heat Sinks: Experimental Investigations
,”
Renewable Energy
,
141
, pp.
322
339
.
10.
Jinyan
,
H. U.
,
Run
,
H. U.
,
Zhu
,
Y.
, and
Luo
,
X.
,
2016
, “
Experimental Investigation on Composite Phase-Change Material (CPCM)-Based Substrate
,”
Heat Transfer Eng.
,
37
(
1–4
), pp.
351
358
.
11.
Shang
,
B.
,
Ma
,
Y.
,
Hu
,
R.
,
Yuan
,
C.
,
Hu
,
J.
, and
Luo
,
X.
,
2017
, “
Passive Thermal Management System for Downhole Electronics in Harsh Thermal Environments
,”
Appl. Therm. Eng.
,
118
, pp.
593
599
.
12.
Lan
,
W.
,
Zhang
,
J.
,
Peng
,
J.
,
Ma
,
Y.
, and
Luo
,
X.
,
2020
, “
Distributed Thermal Management System for Downhole Electronics at High Temperature
,”
Appl. Therm. Eng.
,
180
(
4
), p.
115853
.
13.
Bennett
,
G. A.
,
1991
, “
Active Cooling for Downhole Instrumentation: Miniature Thermoacoustic Refrigerator
,”
Doctoral dissertation
,
The University of New Mexico
.
14.
Wu
,
D.
,
Hu
,
B.
,
Wang
,
R. Z.
,
Fan
,
H.
, and
Wang
,
R.
,
2020
, “
The Performance Comparison of High Temperature Heat Pump Among r718 and Other Refrigerants
,”
Renewable Energy
,
154
, pp.
715
722
.
15.
Wu
,
D.
,
Hu
,
B.
, and
Wang
,
R. Z.
,
2018
, “
Performance Simulation and Exergy Analysis of a Hybrid Source Heat Pump System With Low GWP Refrigerants
,”
Renewable Energy
,
116
, pp.
775
785
.
16.
Chae
,
J. H.
, and
Choi
,
J. M.
,
2014
, “
Evaluation of the Impacts of High Stage Refrigerant Charge on Cascade Heat Pump Performance
,”
Renewable Energy
,
2014
(
79
), pp.
66
71
.
17.
Palomba
,
V.
,
Dino
,
G. E.
, and
Frazzica
,
A.
,
2020
, “
Coupling Sorption and Compression Chillers in Hybrid Cascade Layout for Efficient Exploitation of Renewables: Sizing, Design and Optimization
,”
Renewable Energy
,
154
, pp.
11
28
.
18.
Shang
,
B.
,
Wu
,
R.
,
Hu
,
J.
,
Hu
,
R.
, and
Luo
,
X.
,
2018
, “
Non-Monotonously Tuning Thermal Conductivity of Graphite-Nanosheets/Paraffin Composite by Ultrasonic Exfoliation
,”
Int. J. Therm. Sci.
,
131
, pp.
20
26
.
19.
Li
,
W.
,
Wan
,
H.
,
Lou
,
H.
,
Fu
,
Y.
,
Qin
,
F.
, and
He
,
G.
,
2017
, “
Enhanced Thermal Management With Microencapsulated Phase Change Material Particles Infiltrated in Cellular Metal Foam
,”
Energy
,
127
, pp.
671
679
.
20.
Zhang
,
Z.
,
Zhang
,
N.
,
Peng
,
J.
,
Fang
,
X.
,
Gao
,
X.
, and
Fang
,
Y.
,
2012
, “
Preparation and Thermal Energy Storage Properties of Paraffin/Expanded Graphite Composite Phase Change Material
,”
Appl. Energy
,
91
(
1
), pp.
426
431
.
21.
Benedict
,
H.
, and
Thomas
,
S.
,
2018
, “
Investigation on Refrigerant Transport by Capillary Effect With Fleeces in an Evaporator for a High Temperature Cooling Machine
,”
Int. J. Refrig.
,
93
, pp.
18
28
.
You do not currently have access to this content.