车镇凹陷大王北地区调节构造分析

Analysis on the accommodation structure in Dawangbei area, Chezhen Sag

车镇凹陷大王北地区油气十分富集,复杂的地质结构和构造演化过程导致了该区圈闭类型十分丰富。通过对大王北地区构造的几何形态和演化特征分析,认为该区东部和西部的鼻状构造是埕南边界断层分段差异活动与大1断层活动相互作用下形成的对向并行型调节构造。综合研究表明,调节构造一般发育在沉积中心转移部位,圈闭类型丰富,油气成藏条件良好,虽然目前研究程度较低,但仍具有极大的勘探潜力。

Dawangbei area of Chezhen Sag had rich oil and gas, complex geologic framework and structural evolution caused the multiple trap types. Through the study on the geometric shape and evolutionary characteristic of the structure in Dawangbei area, we considered that the nosing structures in the east and the west of this area belonged to convergent collateral accommodation structure, which were formed by the mutual effect between the subsection variation action of Chengnan fault and the Dal faulting. Comprehensive research showed that the accommodation structure usually formed in the transition position of the centers of sedimentation, with multiple trap types and favorable conditions of oil-gas reservoir forming. Although lower research degree of the structure, it will have great potential in exploration.