Retort Water Oil and Solids

( Accurate measurement of water, oil and solids content provides fundamental information for control of mud properties and is essential for evaluating solids control equipment.___^

The volume percent of liquid phase (water and oil) are measured by heating a known volume of whole mud in a retort unit. The liquid is evaporated from the mud, vapor is condensed and measured as oil and fresh water in a graduated glass tube. Suspended solids are calculated by difference of liquid collected subtracted from whole mud volume (retort cup volume).

Retort Test Procedure Step

  1. Clean and dry the retort assembly and condenser. Condenser passage should be cleaned using a pipe cleaner.
  2. Mix the mud sample thoroughly to ensure homogeneity, being careful not to entrain any air, and that no solids remain on the bottom of container. Air or gas entrapment will cause erroneously high retort solids due to reduced mud sample volume.
  3. Use a clean syringe to obtain a sample of the mud to be tested.
  4. Fill retort cup slowly to avoid air entrapment. Lightly tap side of cup to expel air. Place lid on the cup. Rotate lid to obtain a proper fit. Be sure a small excess of mud flows out of the hole in the lid. Wipe off any excess mud without wicking any of the sample from inside the cup. Wipe the cup clean with towel.
  5. Pack retort body with steel wool.
  6. Apply Never-Seez to threads of retort cup. With lid in place, hand tighten retort cup onto retort body (Figure 16).
  7. Apply Never-Seez to threads on retort stem and attach the condenser.
  8. Place the retort assembly inside the heating jacket and close the lid.
  9. Place the clean, dry, liquid receiver below the condenser discharge tube. The length of the receiver may require that it be angled out from the retort and supported off the edge of the work table.
  10. Plug cord into 110-volt outlet. Allow the retort to run for a minimum of 45 minutes.

Note: If mud boils over into the receiver, the test must be rerun. Pack the retort with a larger amount of steel wool and repeat the test.

  1. Allow the receiver to cool. Read and record: (1) total liquid volume, (2) oil volume, and (3) water volume in the receiver.
  2. Unplug retort and allow to cool. Disassemble and clean the retort assembly and condenser.

Figure 16 Retort Instrument

Figure 16 Retort Instrument

Retort Mud

13. Calculate volume percent water (VW), volume percent oil (VO), and volume percent retort solids (VS), as follows:

100(volume of oil, cm3)

100( volume of water, cm3 )

Volume of the retort cup

(See Retort Cup Verification Procedure) Retort Cup Verification Procedure Step

  1. Allow retort cup, lid and distilled water to reach ambient temperature. Record the temperature.
  2. Place the clean, empty retort cup and lid on a balance (precision of 0.01 g) and tare to zero.
  3. Fill retort cup with distilled water. Place lid on the cup. Rotate lid to obtain proper fit. Be sure a small excess of water flows out of hole in lid. Wipe excess water from lid; avoid wicking out water.
  4. Place filled retort cup and lid on the previously tared balance. Read and record weight of water, to 0.01 g.
  5. Calculate the retort cup volume, VRC, using density of water at measured temperature from Table 1 as follows:

V Weight of water, g

Density of water, g/cm3

Table 1 Density of Water

°F

°C

Density, g/cm'

59

15

0.9991

59.9

15.5

0.9991

60.8

16

0.9990

61.7

16.5

0.9990

62.6

17

0.9989

63.5

17.5

0.9987

64.4

18

0.9986

65.3

18.5

0.9985

66.2

19

0.9984

67.1

19.5

0.9983

68

20

0.9982

68.9

20.5

0.9981

69.8

21

0.9980

70.7

21.5

0.9979

71.6

22

0.9977

72.5

22.5

0.9976

73.4

23

0.9975

74.3

23.5

0.9974

75.2

24

0.9973

76.1

24.5

0.9971

77

25

0.9970

77.9

25.5

0.9969

78.8

26

0.9968

79.7

26.5

0.9966

80.6

27

0.9965

81.5

27.5

0.9964

82.4

28

0.9962

83.3

28.5

0.9961

84.2

29

0.9959

85.1

29.5

0.9958

86

30

0.9956

86.9

30.5

0.9955

87.8

31

0.9953

88.7

31.5

0.9952

89.6

32

0.9950

90.5

32.5

0.9949

91.4

33

0.9947

92.3

33.5

0.9945

93.2

34

0.9944

94.1

34.5

0.9942

95

35

0.9940

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Responses

  • Vittore
    What is the objectives of performing a retort analysis?
    2 years ago
  • abbie mckenzie
    How to calcuate number on solids in water/oil ratio in retort oil and gas?
    1 year ago
  • birgit
    How to test solids in oil?
    8 months ago
  • Leo
    What temputaure for a mud retort?
    6 months ago
  • essi
    How to operate retort analysis?
    5 months ago

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