Well closing pressure measuring method for low pressure low permeation oil field oil water well

Abstract

The invented method includes the following steps: firstly, taking out production pipe string; then down-placing piezometric pipe string with anti-vibration barrel and pressure meter; third, under the condition of that the packer is not set starting pump and making oil production; fourth, stopping pump and setting packer; fifth, well shut-in, pressure meter can be used for automatically measuring and recording pressure build-up data; finally, taking out pressure meter and inputting the above-mentioned data into computer, then processing and analyzing said pressure data.

Description

technical field

[0001] The invention relates to the technical field of pressure measurement of oil and water wells in oil fields, in particular to a pipe string for pressure measurement of oil and water wells in low permeability oil fields. Background technique

[0002] There are currently two conventional pressure measurement methods:

[0003] Lifting the pump to measure the pressure: the technical process of this method is to lift the sucker rod and the oil pump in the wellbore out of the wellhead, and send the pressure gauge into the bottom of the well with a wire rope. Then shut down the well for pressure measurement and wait for the pressure to fully recover. Take out the steel wire rope and the pressure gauge, and use the computer to collect and process the pressure data of the pressure gauge. The pump pressure measurement must make the liquid flow continuously rise in the wellbore (see Figure 1). When the liquid level reaches a certain height, the liquid level does ...

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