THE APPLICATION OF OIL-GAS FINGERPRINT TECHNIQUE ACCORDING TO THE WAVELET PACK ANALYSIS IN THE ESTABLISHING GAS STORAGE IN THE WATER SATURATION OIL-FIELD

In establishing Gas-storage in the water saturation oil-field, the composition of gas produced and injected varies as driving of injected gas in each layer. Adopting the oil-gas Chromatogram Fingerprint Technology can monitor the gases of gas storage-layer and production preferably. The analyzing of the oil-gas fingerprint characteristics of the different layer makes sure the fingerprint differences of these oil-gas and reasons of bringing the differences, and develops the prescription experiments of oil-gas of two layers and three layers, establishes the mathematic models of the each layer's productivity to compute, and applies wavelet pack analyzing technique to increase the oil-gas fingerprint calculation's accuracy. The computing result indicates that the error margins of the actual prescription and the fingerprint calculation are within 6% for two layers or three layers joined injection and extraction. It shows that the oil-gas fingerprint can be used to calculate the productivity contributions of each layer in the oil-well with many layers joined to inject gas and produce, and monitor the productivity's variety of each layer to storage gas.