Reinjection Research of Neogene Porous Geothermal Reservoir

Abstract

Porous geothermal reservoir of Neogene as an important mining geothermal reservoir,in recent years, with the increasing exploited efforts , the geothermal reservoir pressure shows declining year by year , and declines more and more, how to achieve its sustainable development, has become an urgent problems which needs to be solved. Generally considered that reinjection is the main measure of geothermal resources exploitation and protection, it can effectively solve many problems brought with the development and utilization of geothermal development. In the early 1970s, our country had begun research Neogene reinjection, but has not yet achieved a breakthrough.In this paper, it takes Tianjin geothermal reinjection for example, combines with the successful experience and technology at home and abroad , lithologic and tectonic features of Neogene geothermal reservoir sandstones ; uses natural reinjection test methods to explore the permeability of Neogene geothermal reservoir under reinjection condition; and compares the various reinjection test results of different wells with different technology ,proposes appropriate reinjection parameters which fits to Neogene thermal reservoir ;it has a certain significance for the sustainable development and utilization of Neogene geothermal resources.