Transferred geothermal energy heats wellbore

Shaobin Hu Lingling Guo Yongjian Liu Northeast Petroleum University Daqing, China Theoretical calculations and laboratory experiments have demonstrated the feasibility of heat transfer with a sucker rod string. Liaohe field tests of the wells show this technology can heat the wellbore in steam-stimulated wells. Fluid produced from heavy or high-wax oil wells exhibits sharply increasing viscosity and flow resistance rates because of heat loss as it flows from bottomhole to wellhead. Wax precipitation often causes stranded or blocked fluids near the wellhead, which overload the pumping unit and restrict the normal oil well production. One means of addressing this problem is to heat the pr...

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