Zhongyuan Oilfield Low Permeability Reservoir Foam Drilling Technology Research

With the increasing level of exploration to improve,zhongyuan oilfield old proven reserves were getting worse.The percentage of the hyposmosis reservoir increased proven reserves step by step.Blocks utilized in the development of late pressure depletion is a common problem.The reservoir pressure is reduced very significantly and very low degree of recovery.Foam drilling technology has unique technical advantages in protecting oil and gas reservoirs.In order to further the effective development of Zhongyuan O ilfield low permeability depleted reservoir,this paper discusses the application of foam drilling technique in Zhongyuan O ilfield from two aspects of theory study and field test.The calculation method of the establishment of a set of foam drilling technology of hydraulic,foam drilling technology and construction technology of circular flow matching complete,and selected the appropriate field test of low permeability reservoirs in block three wells.Through the comparison of scientific evaluation,three wells in production were increased by 50%,50% and two times.The field test results of three wells in Zhongyuan O ilfield foam drilling technology in oil and gas protection,improve the effect of oil production significantly,in the late period of development for low permeability rese rvoir in Zhongyuan Oilfield of failure,can be large-scale application.Finally,the existing problems and the aspects need to be improved are analyzed.