安棚碱矿是南阳油田在泌阳凹陷的石油勘探中发现的,碱矿主要赋存在下第三系核桃园组二段。南阳油田从找油角度出发,对泌阳凹陷核桃园组的沉积特征和沉积环境做了大量研究工作。本文是在前人工作的基础上,通过泌69井核二段底部含碱段(2077—2141米)岩心的观察和研究,根据其沉积特征、特别是沉积构造组合,探讨该碱矿的成碱环境。 Anpeng alkali mine is discovered in the oil exploration of Biyang Depression in Nanyang Oilfield. Alkali mine mainly exists in the second member of Tertiary Hetao Group. Nanyang Oilfield from the oil point of view, Biyang Depression Hetaoyuan Formation sedimentary characteristics and sedimentary environment done a lot of research work. Based on the previous work, based on the observation and research on the core of alkali-bearing section (2077-2141 m) in the second section of core Ⅱ of the second well 69, based on its sedimentary characteristics, especially the sedimentary structure combination, Alkali environment.