沈家铺地区位于黄骅坳陷孔南地区,构造上位于孔店潜山构造带中部,是被北东向和北西向两组断层复杂化的背斜构造。该地区孔一段岩浆岩发育,并在其中发现油气藏。依据钻井、测井及地震资料,综合利用多种方法 ,对孔一段岩浆岩特征进行研究,认为该区全为浅层侵入的辉绿岩,不发育喷出岩。辉绿岩储集空间主要由孔隙和裂缝组成,在后期构造运动及沿断层渗入的地表水的风化淋滤作用的改造下,裂缝及溶蚀孔洞发育,并聚集油气,形成油气藏。辉绿岩有效储集空间发育及围绕张性断裂带分布是成藏的关键。沈家铺地区辉绿岩分布范围广,有利区域主要分布在孔西断层上升盘靠近断裂的部位,以及下降盘的断层活动强烈、构造裂缝发育区域,如孔西断层上升盘家8断块北、孔西断层下降盘官992断块以西以及枣22断块北部。搞清辉绿岩的分布规律及与油气藏的关系,有利于该地区辉绿岩油藏的开发,且有利于该地区的构造演化分析、复杂断块油藏特征研究及区块调整。 Located in the Kongnan area of ​​Huanghua Depression, the Shenjiapu area is structurally located in the middle of the Qongdian buried hill structural zone and is an anticlinal structure that is complicated by two faults in the NE and NW directions. In the area, a section of magmatic rocks was developed and oil and gas reservoirs were discovered. According to drilling, well logging and seismic data, a variety of methods are comprehensively used to study the characteristics of magmatic rocks in the first member of Kongmou. All of them are considered as diabase that intruded shallowly without any jetting rocks. The diabase reservoir space is mainly composed of pores and fractures. During the post-tectonic movement and the weathering and leaching of surface water along the faults, the fractures and dissolved pores develop and accumulate hydrocarbons to form reservoirs. The key to hydrocarbon accumulation is the development of the diabase’s effective reservoir space and its distribution around the Zhang-Zhang fault zone. The diabase is widely distributed in the Shenjiapu area. The favorable areas are mainly located in the part near the fault uplift of the Kongxi fault and the fault activity in the descending plate is strong. Areas where structural fractures are developed include the North Block 8 fault block north of the Kongxi Fault Uplift , West of the KONGXI fault depression Pan-992 block and the north of the Zao 22 block. Understanding the distribution of diabase and the relationship with diapir reservoir is favorable for the development of the diabase reservoir in this area, and is conducive to tectonic evolution analysis, complex fault block reservoir characteristics and block adjustment in this area.