Aiming at the problem of binomial open flow anomaly caused by high formation pressure and large test output in high-temperature and high-pressure gas fields,through analyzing the productivity test data,it is found that the limitations of the conventional binomial equation and the deviation between test pressure and real pressure are the main reasons for the abnormal productivity of high-temperature and high-pressure gas wells.Through the study of productivity influencing factors,three productivity anomaly correction methods,which are pressure correction method,improved productivity equation,and stratigraphic parameter method are established.The new method is applied to the productivity evaluation of the Dongfang C high-temperature and high-pressure gas field,which solves the difficult problem of abnormal productivity caused by the deviation of test flow pressure and productivity curve of the Dongfang C gas field,and obtains a reliable and reasonable productivity evaluation equation.The new method provides a new idea for the productivity evaluation of offshore high-temperature and high-pressure gas fields.
high temperature and high pressuregas fieldproductivity anomalyproduction evaluation
NETL
NSTL
万方数据
