Determining method of potential section capable of improving efficiency of water injection system

Abstract

The invention discloses a determining method of a potential section capable of improving efficiency of a water injection system, and belongs to the technical field of oil and gas field development. The determining method of the potential section capable of improving efficiency of the water injection system determines whether a function relation exists between the efficiency of the water injectionsystem and above properties according to the efficiency of the multiple water injection systems of multiple water injection stations at the different moments, pipe network efficiency, machine pump efficiency, average single well oil pressure, pump pressure, a motor load rate, the sum of single well water amount, and the ratio of the pump pressure to the average single well oil pressure, if the function relation exists, fitting is carried out to obtain a first function curve with the efficiency of the water injection system as a dependent variable, according to the first function curve, a firstdivision point is obtained, according to the first function curve and the first division point, a tendency straight line is obtained, according to the tendency straight line, a second division pointis obtained, according to the tendency straight line and the second division point, the potential section capable of improving efficiency of the water injection system corresponding to the self variable of the first function curve is determined, the water injection scheme is adjusted, and the aim of improving the efficiency of the water injection system is achieved.

Description

technical field [0001] The invention relates to the technical field of oil and gas field development, in particular to a method for determining a potential interval for improving the efficiency of a water injection system. Background technique [0002] As major oilfields in China enter the middle and late stage of development, the development of oilfields is mainly based on water injection development. In the process of water injection development, the water injection system consumes a lot of electricity, accounting for about 20% to 40% of the total electricity consumption of the oilfield. With the continuous advancement of oilfield development, the comprehensive water content will continue to rise, and the energy consumption of water injection will further increase . Therefore, how to save energy and reduce consumption of oilfield water injection systems, improve the efficiency of water injection systems, and reduce oilfield production costs has become an important issue f...

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Problems solved by technology

[0004] However, the current formula analysis method selects a single parameter, which makes it difficult to conduct a comprehensive analysis, especially when calculating and analyzing data with a large amount of data, it takes a long time, the calculation efficiency is low, and it is difficult to meet the production needs; Obtain a variety of different types of data, while the formula analysis method can only use a few specific types of data, making a lot of valuable data unusable

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