LOW-PRESSURE GAS PRODUCTION METHOD Russian patent published in 2006 - IPC E21B43/00 

FIELD: gas production industry, particularly methods or apparatus for obtaining low-pressure gas from wells, namely to product gas, which is unprofitable to be supplied to gas pipeline inlet.

SUBSTANCE: method involves continuing gas deposit development on the base of drilled vertical wells and compressing gas to supply thereof to main gas pipeline. In particular case aquifer basin effect activity, namely water drive degree, is used. Pressure, which provides gas transportation via main pipeline and volumetric gas-water surface lifting dynamics, which provides periodic preliminary cutting-off, namely reduction of perforation intervals to be water-flooded by means of cement plugs, are created at head compressor plant inlet. To perform this gas production rate is regulated with the use of 3D gas-dynamic productive formation model. This model is adapted to actual gas deposit development characteristics obtained over a period of last several years. Aim of above adaptation is to provide compliance between productive formation volume and filtering parameters determined by above model and actual parameters.

EFFECT: increased efficiency of gas production from particular gas deposits due to usage of water drive effect characteristics.

2 cl, 1 ex