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Oil pool formative characteristics of highly faulted blocks in Biyang Depression

机译：Biyang Despress中高断层块的油池形成特征

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The Northern Slope of Biyang Depression is characterized by several faulted 'nose' and block oilfields developed along a series of different scale nose settings. Two large-scale nose structures in Gucheng (north of the slope) and Wangji-Xinzhuang (east of the slope) are the directional areas of hydrocarbon migration. Nose structure, spreading direction and scale of the sandstone body, faulting system and their coordinated relationship control the pool distribution. Gucheng delta sandstone body spreads NW like a lobate, whose strike is consistent-with the axial direction of the narrow Gucheng nose. Research demonstrates that Gucheng faulted noses formed due to transverse cutting the sandstone body by the SWW strike faulting system. Hydrocarbon converged to the NW. Meanwhile it was blocked by faults, so main pool style is the faulted nose in Gucheng oilfield. Wangji―Xinzhung nose structure is broad relatively, whose axial direction is NE. The strike of the faults, distributional direction of the sandstone body and the axial of the nose structure are approximately the same in the east wing of the nose structure. Stromatolitic roof-style faulted block pools formed because of parallel petroleum migration along the fault planes. In the west wing, however, sandstone distributed diagonally with faults general strike and axial direction of the nose structure. Hydrocarbon migrated divergently. Pool styles are mainly the fault block and fault―lithological reservoirs. The fault formative period is later than the large-scale hydrocarbon migration time. It is indicated in two aspects: 1. Concentration of main petroliferous layers in different oilfields and the same main petroliferous layers in different blocks. 2. The further away from the source rock zone, the deeper the source rock formations. For example, in Gucheng oilfield whose source rocks locate at the south, hydrocarbon came from the lower sections of Hetaoyuan Formation in the north parts, but in the south parts hydrocarbon came from the upper sections. Oil-bearing area of the single faulted nose or block is narrow, and oil-bearing layers changed rapidly into aquifers in the lower position. The segment and linkage of the normal fault directly influence the fault sealing ability, so it is very important to ascertain precisely the spatial distribution of the faulting system.
机译：Biyang Depression的北坡的特点是沿着一系列不同尺度的鼻子设置开发的几个断层物质“鼻子”和块油田。古城（斜坡北部的两个大型鼻子结构）和王吉 - 新庄（斜坡以东）是碳氢化合物迁移的方向区域。鼻梁结构，砂岩体的扩散方向和规模，故障系统及其协调关系控制池分布。古城三角洲砂岩体蔓延地撒谎，如裂片，其罢工一致 - 围绕古城鼻子的轴向。研究表明，由于横向切割砂岩体，由SWW撞击故障系统形成古城断层鼻子。碳氢化合物会聚到NW。与此同时，它被缺陷阻挡了，所以主泳池风格是古城油田的故障鼻子。王金新中鼻结构相对较广泛，其轴向是NE。在鼻部结构的东翼撞击砂岩体的撞击，砂岩体的分布方向和鼻部结构的轴向相同。由于沿着故障平面平行的平行石油迁移而形成的仲托洛尔屋顶式断层池。然而，在西翼，砂岩对角分布，具有故障的一般击球和鼻结构的轴向。碳氢化合物迁移到异语。泳池风格主要是故障块和故障型岩性水库。故障形成期晚于大规模的碳氢化合物迁移时间。结果有两个方面：1。不同油田中主要凡士林层的浓度和不同块中的相同主要的凡士酒层。 2.远离源岩区，源岩层深。例如，在古城油田的源岩位于南方，碳氢化合物来自北部的Hetaoyuan形成的下部，但在南部零件中碳氢化合物来自上部。单个断层鼻子或块的含油面积窄，含油层迅速变为较低位置的含水层。正常故障的段和连杆直接影响了故障密封能力，因此确定刻度系统的空间分布非常重要。

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