1 results about "Linear formula" patented technology

The present application relates to a kind of integrated gas well productivity evaluation method, comprising the following steps: S1, obtaining gas well relevant data: formation pressure, gas well standard production gas and bottom hole flowing pressure data;S2, solving laminar flow term coefficient A, turbulence term coefficient B, solve gas well open flow capacity;A, B coefficient is solved using plotting method, corresponding linear formula is obtained using linear regression fitting, the intercept and slope of formula are A, B value;A, B and P e Substitute binomial formula (2), open flow capacity q AOF Is solved: S3, if binomial productivity equation coefficient A, B exists negative value, using pressure term correction value correction to obtain positive value coefficient A' and B';Then, based on A' and B' are substituted into formula (2) to obtain open flow capacity q AOF The gas well productivity evaluation method of the present application makes full use of the data obtained during the development of gas well for analysis and evaluation, and realizes efficient and accurate evaluation combined with the characteristics of gas well, which is of great significance for production guidance.