Table 2.

Table 2. Compilation of previous gas hydrate dissociation gas to water measurements.

Volume gas/
volume water Volume gas/
volume hydrate n
(mol H₂O/mol gas) Cages
occupied
(%) Hydrate
density
(kg/m³)

Pressure conditions on Blake Ridge: Average = 28 MPa; range = 22-32 MPa

216.4
173.0
5.75
100.0
924.0

210.9
168.6
5.9
97.5
920.9

207.4
165.8
6.0
95.8
919.0

204.0
163.1
6.1
94.3
917.1

200.7
160.5
6.2
92.7
915.3

197.5
157.9
6.3
91.3
913.5

195.4
156.2
6.4
90.3
912.3

194.4
155.5
6.4
89.8
911.8

191.5
153.1
6.5
88.5
910.2

188.6
150.8
6.6
87.1
908.5

185.7
148.5
6.7
85.8
907.0

183.0
146.4
6.8
84.6
905.5

151.8
121.5
8.2
70.1
888.1

Pressure conditions of 1 MPa

216.4
168.5
5.75
100.0
900.0

210.9
164.2
5.9
97.5
896.9

207.4
161.5
6.0
95.8
895.0

204.0
158.9
6.1
94.3
893.1

200.7
156.3
6.2
92.7
891.3

197.5
153.8
6.3
91.3
889.5

195.4
152.1
6.4
90.3
888.3

194.4
151.4
6.4
89.8
887.8

191.5
149.1
6.5
88.5
886.2

188.6
146.8
6.6
87.1
884.5

185.7
144.6
6.7
85.8
883.0

183.0
142.5
6.8
84.6
881.5

151.8
118.2
8.2
70.1
864.1

Volume gas/ volume water	Volume gas/ volume hydrate	n (mol H₂O/mol gas)	Cages occupied (%)	Hydrate density (kg/m³)
Pressure conditions on Blake Ridge: Average = 28 MPa; range = 22-32 MPa
216.4	173.0	5.75	100.0	924.0
210.9	168.6	5.9	97.5	920.9
207.4	165.8	6.0	95.8	919.0
204.0	163.1	6.1	94.3	917.1
200.7	160.5	6.2	92.7	915.3
197.5	157.9	6.3	91.3	913.5
195.4	156.2	6.4	90.3	912.3
194.4	155.5	6.4	89.8	911.8
191.5	153.1	6.5	88.5	910.2
188.6	150.8	6.6	87.1	908.5
185.7	148.5	6.7	85.8	907.0
183.0	146.4	6.8	84.6	905.5
151.8	121.5	8.2	70.1	888.1
Pressure conditions of 1 MPa
216.4	168.5	5.75	100.0	900.0
210.9	164.2	5.9	97.5	896.9
207.4	161.5	6.0	95.8	895.0
204.0	158.9	6.1	94.3	893.1
200.7	156.3	6.2	92.7	891.3
197.5	153.8	6.3	91.3	889.5
195.4	152.1	6.4	90.3	888.3
194.4	151.4	6.4	89.8	887.8
191.5	149.1	6.5	88.5	886.2
188.6	146.8	6.6	87.1	884.5
185.7	144.6	6.7	85.8	883.0
183.0	142.5	6.8	84.6	881.5
151.8	118.2	8.2	70.1	864.1

Notes: The range is given from the maximum theoretical limit to the lower limit expected in nature. The molar ratio of water to gas (n), percentage of cage occupancy, and corresponding gas hydrate density is also listed.