Method for determining daily peak regulation yield of underground gas storage

Abstract

The invention relates to a method for determining the daily peak regulation yield of an underground gas storage. The method includes the following steps: S1, obtaining h groups of original peak regulation data, h being a positive integer greater than or equal to 1; s2, calculating the h groups of original peak regulation data to obtain m peak-to-valley ratios, wherein m is a positive integer greater than or equal to 1; s3, selecting any group of original peak regulation data to calculate and obtain a total gas production rate; s4, calculating and obtaining Mahalanobis coefficient values of ngas production periods of each peak-to-valley ratio by utilizing a trial-and-error method; s5, obtaining the lowest daily gas production rate corresponding to each peak-valley ratio according to the total gas production rate, the gas production period and the martensite coefficient value; and S6, determining the daily average gas production rate of each gas production period according to the minimum daily gas production rate and the Mahalanobis coefficient value. According to the invention, the productivity maximization and the gas supply capacity optimization are realized.

Description

technical field [0001] The invention relates to the technical field of underground gas storage peak regulation, in particular to a method for determining daily peak regulation output of an underground gas storage. Background technique [0002] The construction history of my country's underground gas storage is only 20 years, and the original gas reservoirs are generally used to rebuild underground gas storage. Designers often continue the customary design concept of "high and stable production" of gas fields, and the average production value is often used in the design of daily peak shaving production, resulting in a significant deviation from the market demand production. The efficiency of gas storage is reduced; the design concept of underground gas storage is completely different from that of gas field development, and the corresponding design method is unique. [0003] At present, there are three problems in the design of daily peak-shaving output of underground gas sto...

AI Technical Summary

Problems solved by technology

[0005] (2) The calculation unit of the daily peak shaving output of the gas storage is too large; the current calculation unit of the peak shaving output of the gas storage is calculated on a monthly basis. no more than 10 days

[0006] (3) The formula for calculating the daily peak-shaving output of the gas storage is lacking; at present, there are numerical simulation methods and gas reservoir engineering methods for calculating the peak-shaving output of the gas storage, but the calculation results are inaccurate due to the inaccurate operation mode and calculation unit

Images