克拉玛依油田七中东区三工河组油藏初期产能分布特征研究

THE RESEARCH ON DISTRIBUTION CHARACTERISTICS OF THE EARLY PHASE PRODUCTIVITY OF SAN-GONG-HE RESERVOIR IN KARAMAY OIL FIELD

七中东区三工河组油藏位于克拉玛依市东30㎞处,区域构造上位于克百断裂带的中段—南白碱滩断裂上盘。2006年申报新增含油面积6.73km2,地质储量197.52×104t,2007-2009年采用250m注采井距反七点法井网实施滚动开发,先后钻采油井32口,注水井15口。采油井初期产能0.1-13.2t,含水6.0-98.0%,初期产能差异较大。通过对该区储层特征、沉积微相、油层厚度、原油性质、生产压差、油嘴大小、储层压裂改造、注水见效等地质工程因素分析,结果表明,七中东三工河组油藏初期产能主要与沉积微相、储层压裂改造规模相关。

San-gong-He reservoir of QI-ZHONG-DONG is located in 30Km of karamay in the eastern.The regional structure is in the fault zone through the middle of the south JianTan fracture,and the up part of south White JianTan fracture.In 2006,latest declaration of oil area 6.73km2.Geological reserves is about 197.52 x 104 t.during 2007 – 2009,we adopt seven well nets rolling development with 250m injection-production spacing.Successively drilling 32 oil Wells and 15 injection Wells.Early production capacity of each well is 0.1 to 13.2 t,water ratio is 6.0-98.0%,Initial capacity has great difference.Through geological engineering factors's analysis such as Reservoir characteristics,sedimentary microfacies,reservoir thickness,crude oil properties,production pressure difference,nozzle size,reservoir fracturing the transformation,the water injection effective,we can draw a conclusion: the San-gong-He reservoir of QI-ZHONG-DONG's early production capacity is mainly related to the Sedimentary microfacies,and the scale of reservoir fracturing reform.