Study On Hydrofracture Technology Of Mahu Baikouquan Conglomerate Dissertation

The Mahu depression is one of the most prosperous hydrocarbon sags in the Junggar Basin,and the proven reserves are 4378×10~4 tons in 1994.The reservoirs are not well developed and can not be effectively developed.From the construction of the exploration wells in the early exploration wells,Lack of understanding,fracturing construction is not strong problem.Therefore,it is necessary to form a set of fracturing technology suitable for the thick and small gritstone and conglomerate reservoirs in the Mouma Lake depression.It provides theoretical support and technical support for the effective development of block scale,and has guidance for the large-scale development of the block significance.Through the study of the reservoir geology and the construction of the reservoir,the key problems of the reservoir reconstruction of the Baikouquan Formation in the Xiangma Lake Depression are obtained.Aiming at the key problems of reservoir reconstruction,the adaptability of fracturing process was studied from two aspects:adaptability of fracturing fluid system and adaptability of fracturing process.The adaptability of fracturing fluid system is mainly from the secondary damage of fracturing fluid and the improvement of fracturing performance of fracturing fluid.The research on the adaptability of low concentration scraper fracturing fluid and fiber suspension sand fracturing fluid is carried out.Fracturing process adaptability research mainly from the optimization of proppant paving effect and optimize the sand and mudstone reservoir layer of fine layered transformation,carried out the secondary sand,fiber suspension sand,fine stratification and other characteristics for the reservoir pressure Research on Splitting Technology.Through the above research,we have made a profound understanding of the reservoir characteristics applicable to different fracturing processes,and formed a fracturing technology system which is suitable for the key problems of the reconstruction of the granite and conglomerate reservoirs in the Huimaohu depression.The large-scale development of the block provides technical support.