The pressure drop funnel method was used to evaluate the discharge range of each layer

Abstract

The east side of yulin gas field belongs to the multi-layer gas reservoir, and the dominant vertical layer is not prominent. At present, there is a lack of productivity evaluation method for single well of multi-layer system, and the scope of discharge and control factors of small layer of gas well are not clear. Based on the well pattern data, geological and test data of the eastern yulin gas field, and referring to the development experience of similar blocks at home and abroad, the production evaluation of gas Wells and control reserves evaluation of multi-layer gas reservoirs were completed, the reserve production characteristics, discharge range and control factors of multi-layer gas reservoirs were clarified, and the well spacing of well pattern was optimized.