Optimization and Performance Evaluation of Three Fracturing Fluid Systems for Tight Sandstone Reservoirs
In view of the problems of low pressure,insufficient formation energy,poor physical properties,low production after oil well fracturing,short stable production time and rapid decline in tight sandstone reservoirs in Changqing oilfield,on the basis of fully studying the reservoir characteristics of the target area,combined with rheological experiments,three fracturing fluid systems were initially proposed.The gel breaking performance test and residue content test of the three fracturing fluid systems were carried out to determine the fracturing fluid system formula.Finally,the performance evaluation of the fracturing fluid formula was carried out through laboratory tests.According to the results of laboratory experiments,combined with the requirements of field use,three kinds of fracturing fluid system formulations were finally determined.The system has the characteristics of good temperature and shear resistance,fast gel breaking,less residue and good filtration performance.The above research results better guide the field practice,and have a good guiding significance for the fracturing transformation of tight sandstone reservoirs in Changqing oilfield.
NETL
NSTL
万方数据
维普
