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长庆油田华庆地区晚三叠世延长组长63储层(T3y3)为目前长庆油田开采的主要产油层位之一,该层油气初期产能单井日产油量为0～7.38吨不等,但其分布具有区块差异性。本文结合各井油气产能及裂缝发育特点将研究区分为高密(裂缝密度)高产(油气产能)区,高密中高产区,高密中低产区,低密中高产区,低密中低产区,低密低产区。通过对比分析,认为油气初期产能与储层裂缝具有很好的相关性,受到裂缝发育程度,开启性和充填程度的影响。同时,储层微观溶蚀孔隙的发育特征也对油气产能具有重要的影响。
The Late Triassic Yanchang Formation Cap 63 reservoir (T3y3) in Huaqing area of Changqing Oilfield is one of the major oil producing layers in Changqing Oilfield. The initial production capacity of single well in this layer varies from 0 to 7.38 tons per day , But its distribution has the block difference. Based on the characteristics of oil and gas productivity and fractures in each well, the study is divided into high density (fractured density) high yield (oil and gas productivity) areas, high density middle and high yield areas, high density middle and low yield areas, low density middle and high yield areas, low density middle and low yield areas, Low density and low yield area. Through comparative analysis, it is considered that the initial production capacity of oil and gas is in good correlation with reservoir fractures, and is affected by the degree of fracture development, opening and filling degree. At the same time, the developmental characteristics of micro-dissolved pores in reservoirs also have an important impact on oil and gas productivity.