Research On The Fiber Temporary Plugging Steering Acidizing Technology In Low Porosity And Low Permeability Carbonate Rock Reservoirs

In recent years,acid technical system of innovation and constantly improve the acid pressure processing method,for the temporary plugging agent steering acidizing technique become the main technology of carbonate reservoir transformation method provides a theoretical basis.In carbonate oilfield application of temporary plugging agent to acidification transformation technology,has achieved considerable economic benefits,but only from the perspective of sand fracturing,acid fracturing validity is shorter,can take advantage of the temporary plugging agent steering acidizing technology reform to achieve the purpose of the single well production capacity recovery.At the scene of the oilfield,due to the long time continuous construction,mining and caused a well layer and failure more than old well,temporary plugging agent effect of reconstruction of steering acidizing reservoir and practical problems become poor,developed the appropriate fiber temporary plugging agent become the implementation of temporary plugging agent to acidification acid fracturing modification technology of the key.In the carbonate reservoir acid fracturing modification technology to acidification of temporary plugging agent the congestion,further explore the potential failure of old well,realize the effective utilization of old well,is very important for high efficiency mining,therefore,to develop low permeability carbonate reservoir of fiber bridging steering acidizing technology research,has very important significance for the production.Based on the research of domestic and foreign experience of carbonate reservoir and M oilfield site actual situation,analyzed the characteristics of carbonate reservoir of M oilfield,including the reservoir structure,pressure,flow and temperature,and analyzes the temporary plugging agent to carbonate reservoir acidification transformation mechanism of fiber temporary plugging agent for M reservoir is developed,and the performance evaluation of the indoor,using multiple regression method to establish the fiber bridging steering acidizing model,and the implementation process,are presented and the theoretical results in M oilfield,V-3 and X-1 two layer has carried on the field application,the south,and V-1 X-3 a candidate Wells in north layer fiber bridging steering acidizing parameter optimization,the optimization results provide the theoretical basis for site construction.