Gas Flow Model of Adhesion Sand Casing Well First Interface Micro Clearance and Application

WANG Chen, WANG Tingting, ZHAO Wanchun, LI Xia, LI Kang

Abstract


In order to accurately describe the flow characteristics of the gas channeling in the adhesion sand casing well first interface, this article assumes the first interface annulus composed by adhesion sand casing and cement mantle is a microscopic rough gas flow channel. Using the lattice Boltzmann method, the flow model of gas channeling in first interface rough microscopic channel is established, the fundamental relationship of gas flow rate, gas flow pressure distribution and gas annulus pressure differential are calculated and analyzed. And the flow characteristics of gas under different adhesion sand density is simulated. The results show that the theoretical calculation and the numerical simulation results are in good agreement, the new calculation model reveals the essential rule of cementing gas channeling flow in adhesion sand casing well, which provides a new method for the gas channeling problem in process of subsequent oil well cementing.
Key words: Adhesion sand casing well; Rough surface; Cementing first interface; Lattice Boltzmann; Gas channeling

Keywords


Adhesion sand casing well; Rough surface; Cementing first interface; Lattice Boltzmann; Gas channeling

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References


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DOI: http://dx.doi.org/10.3968%2Fj.aped.1925543820140701.1845

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