Abstract
Considering the issue caused by the tail gas of viscous oil fire flooding, which carries a large amount of jeopardizing liquid, the Liaohe Oilfield No. 56 desulfurization station applies the vertical processing separator as the main dehumidification equipment for moisture elimination. However, the lack of study on the separator’s gas–liquid separation mechanism leads to unclear recognition of the equipment’s processing capability, which easily causes the desulfurization tower to water out, and the tail gas gathering network system to get frozen and blocked. To result in a solution to the problems above, numerical simulation software is applied in this paper based on the oil field’s actual operation data to establish a mathematical model for calculation, which may assist in simulating the gas–liquid separating process, in analyzing the flow field distribution within the separator, and in studying the dehumidification mechanism in terms of influencing factors and laws of equipment dehumidification efficiency. Finally, this helps optimizing the separator’s structure based on the calculation results. The research results provide a theoretical basis and technical support for the practical application of dehumidification equipment in oil fields.
Highlights
The fire flooding experiment launched in DU Block 66 of Liaohe Oilfield ended with a great success
Based on the constituents (CH4, CO2, N2, H2 S, O2 ) of the tail gas collected from the oilfield, the contents of CO2, N2, CH4, O2 and H2 S are between 3–30%, 20–80%, 10–75%, 0–3% and 0–0.0004%, respectively
Since it is impossible to achieve a result in conformity with practical onsite data through one numerical simulation only, the model has been approximated, adjusted and optimized a lot on grid division, equation discrete schemes, spacing and convergence requirements based on actual data and the gas-phase moisture content we computed by usage of the data collected from the outlet under current working conditions
Summary
The fire flooding experiment launched in DU Block 66 of Liaohe Oilfield ended with a great success. The research is still imperfect [6] In this regard, the process of gas–liquid separating inside the equipment is simulated based on actual producing data of the oil field. The results of the calculations turn out to be identical to that from the oil field On this basis, the separation efficiency is obtained through calculation under different inlet water contents and inlet velocities. Combined with the separator’s internal flow field distribution, it may assist in confirming how different inlet water contents and inlet velocities influence the separation efficiency, and eventually optimize the structure of the separator based on the calculation results [8]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
