Improved natural gas drive oil production method

Abstract

The invention relates to an improved natural gas drive oil production method which is applied to oil production in oil fields. The invention is characterized in that A. natural gas is injected into a gas injection well; B. under the condition of continuous injection of natural gas, peripheral production wells are opened for production and closed for stopping production discontinuously. In the period of closing the well, the pressure of an oil pool at the periphery of the gas injection well raises, and when the pressure raises to a certain extent, the production wells are opened for production; with the production of the opened production wells, the pressure of the oil pool at the periphery of the gas injection well decreases and when the pressure decreases to a certain extent, the production wells are closed for stopping production; and the above steps are repeatedly circulated. The method has the effects that the drive oil effect can be improved and when the pressure raises, part of natural gas can be dissolved into the crude oil; when the pressure decreases, the natural gas can be separated from the crude oil so as to form a plurality of small bubbles and the volume of the crude oil is obviously expanded compared with the volume of the crude oil when the natural gas is not separated. As the natural gas is injected continuously, the expanded crude oil expands to downstream, thus driving the downstream crude oil to flow to the downstream production wells.

Description

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AI Technical Summary

Benefits of technology

This technology improves the efficiency of producing heavy oils while reducing wastage or pollution associated therewith during traditional methods such as water-based drilling (WBF) or steam exploration techniques that use geothermal energy sources like hot brine). By continuously reconnecting these areas throughout the process, it becomes possible to produce more efficiently without causing environmental concerns due to excessive emissions.

Problems solved by technology

This patented technical problem addressed by this patents relates to improving the efficient usage of naturally-produced gases during oil extraction processes such as drilling or hydraulic fracturing operations while also reducing their impact on other areas within an underground environment like aquifers due to these channels created when they are introduced with them.

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