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Table 4 Laboratory analysis of cement slurry (Part 1/2)

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

Chemical

Concentration

Unit

Chemical composition

 Cement

94.00

lb/sk

 Silica flour

40.0

\(\%\) bwoc

 Retarder

0.50

\(\%\) bwoc

Calculations

 Surface density

16.2

lb/gal

 Downhole density

16.2

lb/gal

 Sack weight

94.00

lb/sk

 Dry weight

132.07

lb/sk

 Dry yield

1.55

ft3/sk

 Water

5.87

gal/sk

 Total Fluids

5.87

gal/sk

 Surface Yield

1.49

ft3/sk

 Downhole Yield

1.49

ft3/sk

Conditions

  Time to BHCT

33

min

 BHCT

126.6

\(^{\circ }\)C

 BHST

260

\(^{\circ }\)C

 Initial pressure

459

psi

  Final pressur

3632

psi

 Simulated depth

6189

ft

  1. See Table 6 for unit conversion