Optimal design of medium-buried pipe with horizontal wells

Abstract

In this paper, based on the emergence of medium-depth cased buried pipe with horizontal wells, a kind of optimization design for this buried pipe is designed. Firstly, a semi-analytical model and related evaluation indexes are established for the model, and three different schemes are used for simulation and comparison, which are: changing the inner and outer diameters of the buried pipe at the same time, changing the outer pipe diameter while keeping the inner pipe diameter unchanged, and changing the inner pipe diameter while keeping the outer pipe diameter unchanged, which are of great significance for the optimization of the design of the new type of buried pipe. In this paper, the establishment of the model mainly adopts the establishment and discretization of the energy equation of heat transfer and uses Fortran software to realize. Ultimately this paper comprehensively consider its temperature distribution, heat storage capacity and its economic type, can be concluded that the above three options in option two of the investment is relatively small, the temperature enhancement is more significant. The results and conclusions of the optimization are very helpful for the optimal design of this kind of buried pipe.