合浦盆地川江断块成藏条件与有利勘探方向

合浦盆地乐2X 井钻遇地层均以灰白色、杂色及紫红色粗碎屑岩为主，暗色泥岩厚度较薄，仅始新统酒席坑组
上段较厚，但埋藏过浅，处于未成熟阶段。乐2X 井所在的川江断块圈闭基本落实，但是该圈闭基本不具备烃源条件，
又远离烃源的有效供给系统，导致该断块圈闭成为了“无源之水”、“无本之木”的空圈闭是钻探失利的主要原因。因
此，深入分析研究低熟烃源岩分布及烃源供给系统，在有效烃源供给系统内，综合预测与圈定有利的低熟油气及生物
气运聚富集区带，应是该盆地油气勘探攻关的关键所在。

The Hydrocarbon Accumulation Conditions and Favorable Exploration Direction of Chuanjiang Block of Hepu Basin

Strata found in Well Le2X in Hepu Basin are mainly off-white，variegated and purple-red，and dark mudstone is
thinner than others，only Jiuxikeng group of the Pliocene is thicker，but its bury is not deep，and belongs to prematurity stage.
The Chuanjiang fault block structural trap of Well Le2X is basically clear，but the traps is without basic hydrocarbon source
conditions and is away from the hydrocarbon source supply system，resulting in the fault block traps becoming empty traps，
which is the main reason for the failure drilling. Therefore，in-depth analysis of the low mature source rocks and hydrocarbon
source supply system，comprehensive prediction and delineation of favorable migration and accumulation of enriched zone
of low mature oil and gas and bio-gas within effective hydrocarbon source supply system，should be the key to oil and gas
exploration research in Hepu Basin.