The Integrated Application of Well Testing and Logging Data in the Early Exploration Phase of G oil Field

摘要

In exploration phase, due to indistinct geological information, lack of other reference data and the ambiguous properties of single well interpretation technology, it' s difficult to determine the final interpretation results of well testing data and logging data. Different reservoir models such as double porosity model, composite model and hom ogeneous model have been used to interpret the well testing data combining with different boundary models in the early exploration phase. Double porosity model was given up through the integrated analysis of XRMI,core and other well testing da ta. Multi no -flow boundaries were also rejected by comprehensive analysis of well testing processing, geological in formation and the quality of the well testing log -log curve. At the same time, a false appearance of "pressure de pletion" was identified. Combining with the geologic condition and logging interpretation results of G oilfield, a bottom water constant pressure boundary could be concluded based on the decreasing of derivative curve at the late period on well testing interpretation log -log plot. This conclusion also verified the logging interpretation result. Therefore, it illustrated the verification correlation between logging and well testing interpretation results. Net pay thickness from logging interpretation has a great influence on well testing interpretation results. The integrated application of logging interpretation and well testing interpretation shows that logging interpretation could be used to reduce the ambiguity of well testing interpretation result,and vice versa. Logging and well testing data should be fully integrated to reduce the ambiguity of single well interpretation caused by the lack of data in exploration period.