东濮凹陷胡庆构造带油气成藏模式及勘探潜力

胡庆构造带具有较好油气成藏条件,含油层系多,含油井段长,油气富集.平面上油气集中分布在二台阶,其探明储量占整个地区探明储量的90%以上,一台阶和三台阶储量很少;纵向上油气富集段集中在沙三段的沙三中、下亚段.油藏类型主要为墙角式油藏和断鼻型油藏.通过对该区油气成藏模式及油气分布规律研究,认为Ⅱ级断层的断缝带、不同构造转换带及不同含油气区块结合部、零星出油点周边、岩性油藏、低幅度隐蔽油藏以及勘探程度相对较低的沙三上、沙二下和沙一段等层系,是下步勘探的主要方向和目标.

Hydrocarbon Reservoir Formation Model and Exploration Potentiality in Huqing Structure Belt of Dongpu Depression

Huqing structure belt has preferable condition, its plenty oil-bearing series and long bearing interval cause rich hydrocarbon. Oil and gas centralize in second step, and vertical pay bed centralize in middle and lower sub-zone of Es_(3) passage. The reservoir type is corner formed by two walls and fault nose. By means of studying the reservoir formation model and hydrocarbon distribution method, we considered the main exploratory aspect and destination is the break joint belt of reversed branch faults, different structure transfer belt and different oil and gas bearing block binding localization, sporadic oil exit perimeter, lithology reservoir, low-amplitude subtle pool and inferior degree of prospecting upper Es_(3 ,)lower_( )Es_(2 )and Es_(2),etc.