A NOVEL EARLY DATA WELL TEST INTERPRETATION METHOD FOR WATER INJECTION IN LOW PERMEABILITY RESERVOIRS

The method of water injection development was adopted in Jilin Oilfield, and the number of water injection wells are also increasing. Water injection well pressure drop test wells are particularly important in well test interpretation. The graphical analysis of test well interpretation shows that the radial flow accounts for between 10% and 20% in the pressure drop test well of the injection well in Jilin Oilfield. The unit technology of PanSystem test interpretation software combined with water injection well drop curve slope regression formula method is proposed firstly in order for pressure drop test well data which most of wells without radial flow to be applied. This new technology, new methods, and new ideas have solved the problem of well test interpretation of low-permeability reservoirs in the injection wells and a new situation was opened for the well test interpretation of low-permeability reservoirs in Jilin Oilfield.