A Water Content Prediction Method for Sour and Non-sour Natural Gas
A sour natural gas and prediction method technology, applied in the field of water content prediction of sour and non-sour natural gas, can solve the problems of poor applicability and improvement of prediction accuracy, and achieve the effect of strong operability and clear calculation process
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Embodiment 1
[0034] The two dry base compositions are pure CH 4 and "94% CH 4 , 4%C 2 h 6 , 2%C 3 h 8 " natural gas is taken as an example, the temperature provided by the invention is predicted at 4.6~100 ℃, the water content of natural gas under the condition of pressure 0.5~9.347MPa, and the prediction accuracy of this method is evaluated based on the laboratory measured value, relative deviation (RD) and mean relative deviation (ARD) are defined as follows:
[0035]
[0036]
[0037] where x cal is the water content of natural gas predicted by the correlation; x exp is the water content of natural gas measured experimentally.
[0038] For the flow chart of predicting the water content of non-sour natural gas, see figure 1 As shown, the steps include:
[0039] 1) Determine the natural gas temperament, the dry basis composition of temperament 1 is pure methane, and the dry basis composition of temperament 2 is 94% CH 4 , 4%C 2 h 6 , 2%C 3 h 8 , all meet the compositio...
Embodiment 2
[0046] Taking the 8 types of sour natural gas provided by the Gas Processing Engineering Data Book (GPSA Engineering DataBook) developed by the Gas Processing Suppliers Association (GPSA) as an example, the sour natural gas is predicted to have a temperature of 34-71.1 °C and a pressure of 2.5-13.8 MPa. and evaluate the prediction accuracy of this method.
[0047] For the flow chart of predicting the water content of sour natural gas, see figure 1 As shown, the steps include:
[0048] 1) To determine the temperament of natural gas, the middle mole fractions of the eight dry components of sour natural gas all satisfy: CH 4 ≥70%, CO 2 2 S<29%;
[0049] 2) Determine the temperature and pressure of natural gas. The temperature range of 8 kinds of sour natural gas is 34-71.1°C and the pressure is 2.5-13.8MPa, all of which meet the temperature and pressure requirements of sour natural gas;
[0050] 3) Based on the introduction temperature, CO 2 and H 2 The natural gas water co...
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