通过岩心观察,结合测井、录井资料及相关测试资料综合分析,对正宁地区长6油层组沉积相进行了系统分析。结果表明,该区主要发育重力流-三角洲-湖泊沉积体系,识别出了砂质碎屑流沉积、浊积体、三角洲前缘、(半)深湖四种亚相。研究区仅西南角发育三角洲前缘亚相,其余地区发育大量的砂质碎屑流和浊流等重力流沉积和(半)深湖泥。 The sedimentary facies of Chang 6 reservoir in Zhengning area was systematically analyzed through core observation, combined logging, logging data and related test data. The results show that the main gravity flow - delta - lacustrine sedimentary system is developed in this area, and four subtypes of sandy debris flow sediment, turbidite body, delta front and (semi) deep lake are identified. In the study area, only the delta front is developed in the southwestern corner of the study area. In the remaining areas, a large amount of sandy debris flow, turbidity flow and other gravity flow sediments and (semi-) deep lake mud are developed.