Study On Relationship Of The Characteristics Of Well Test Pressure Response And The Production Performance Law Of Different Fracture-vug Unit

With abundant reserves and a great amount of production,the carbonate reservoirs are widely distributed in the scope of all the world,among them,more than 30% are fracture-vug type reservoirs.The Tahe oilfield is different from other carbonate oilfields,which is strong heterogeneity fracture and vug carbonate reservoir with complicated geological conditions and reservoir spaces. it's very difficult to understand reservoirs,manage and analysis oilfield. So making full use of well test monitoring data, inosculating dynamic analysis and expanding well test interpretion application has a very important significance for accurately understand and effective development the fracture and vug carbonate reservoir. Starting with relationship of the characteristics of well test pressure response and the production performance law of different fracture-vug unit, by making use of smoothing technique based on the B spline and deconvolution method based on the Duhamel principle and Laplace transformation thesis studies the filtration questions of well bore stora, high-frequency noise and other influence factors,and that make the well test curve can reflect the actual dynamic in reservoirs. Bonding characteristic of well test curve and basing reservoir type, developmental state and seepage performance in ordovician carbonate reservoirs of Tahe oilfield,the reservoirs are divided into eight kinds firstly,and then the well test curves are divided into four kinds based on the pore distribution and combination: types of pseudo- homogeneous, types of dual/ multiple media, types of composite reservoirs and types of complex reservoirs;the thesis establishes characteristic chart boards of production performance curve with different reservoirs through studying on relationship of different production performance law and fracture-vug unit; establishes corresponding pattern of well test curve-fracture-vug unit-production performance through comparative study on characteristic of well test curve, geological characteristics and development performance law;and establishes characteristic chart boards of production performance with wells in different reservoirs through verification research on established corresponding pattern with the method of well test interpretion and numerical simulation.The production performance boards come from dynamic fitting of typical well with typical law,which have strong representativeness and provide evidence for production performance prediction.