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Table 5 Laboratory analysis of cement slurry (Part 2/2)

From: Monitoring of a reverse cement job in a high-temperature geothermal environment

Thickening time   Free fluids  
Bearden units of consistency (bc) Time Surface (21 \(^{\circ }\)C) 0
19 bc 0:00 Downhole (82 \(^{\circ }\)C) 0
40 bc 4:32:52   
50 bc 4:34:30   
60 bc 4:35:01   
70 bc 4:35:22   
99 bc 4:38:19   
Surface rheology (21 \(^{\circ }\)C) Downhole rheology (82 \(^{\circ }\)C)
RPM Dial reading RPM Dial reading
600 302.2 600 183.3
300 189.3 300 113.8
200 135.6 200 87.4
100 76.6 100 54.8
60 50.9 60 42.5
30 33.0 30 36.3
6 18.2 6 14.3
3 32.3 3 15.1
PV 144.1 cP PV 83.7 cP
YP 28.5 lbf/100 ft\(^{2}\) YP 24.6 lbf/100 ft\(^{2}\)
  1. The cementing contractor used a Fann Model 3530A to measure the rheological parameter