Joint control of the Cenozoic faults and magma on hydrocarbon accumulation in BZ34-9 oilfield in Huanghekou Sag,Bohai Bay Basin

Yang Haifeng; Xu Changgui; Niu Chengmin; Yang Bo; Chen Lei; Guo Tao; Wu Jing; Su Wen

doi:10.11743/ogg20180519

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Joint control of the Cenozoic faults and magma on hydrocarbon accumulation in BZ34-9 oilfield in Huanghekou Sag,Bohai Bay Basin
Vol. 39, Issue 5, Pages: 1056-1064(2018)
Online First：28 October 2018，

Published：2018
DOI： 10.11743/ogg20180519
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DOI：

Yang Haifeng, Xu Changgui, Niu Chengmin, et al. Joint control of the Cenozoic faults and magma on hydrocarbon accumulation in BZ34-9 oilfield in Huanghekou Sag,Bohai Bay Basin[J]. 2018, 39(5): 1056-1064. DOI： 10.11743/ogg20180519.

摘要

综合运用区域地质、三维地震、测井、地球化学、岩石薄片和X-衍射等多种资料，重点针对控制渤海湾盆地黄河口凹陷中洼南部斜坡带新生界岩浆岩发育区碎屑岩油气成藏的关键因素进行了研究。作者认为研究区断裂活动与岩浆喷发的时空有序耦合对油气的成藏起到了明显的控制作用，主要表现在以下3个方面：①“断裂-岩浆”联动控制坡中隆起带的形成及规模性圈闭的发育；②“断裂-岩浆”时空有序配置利于深部古近系优质碎屑岩储层的发育；③“断裂-岩浆”耦合共同控制油气差异富集。在这些认识的指导下，在黄河口凹陷中洼南部斜坡带成功发现一个规模大、产能高的优质油田，发现储量近8 000×10

，最高单井日产近290 m

。

Abstract

The study is based on integration of various data

such as regional geologic

3D seismic

well logging and geochemical data

as well as thin section and SEM observation.Its target is the key factors controlling hydrocarbon accumulation in the clastic rock reservoirs within the Cenozoic magma developing areas on the southern slope of the central low in Huanghekou Sag

Bohai Bay Basin.The result shows that the spatial and temporal coupling of fault activities and magma eruptions plays a pronounced role in controlling the hydrocarbon accumulation as follows:(1) the combination of fault and magma activities controls the formation of uplift zones on the slope and development of sizable traps; (2) the spatial and temporal coupling of faults and magma benefits the development of deeply buried Palaeogene clastic reservoirs of high quality;(3) the fault and magma jointly controls the differential hydrocarbon accumulation.Under the guidance of the cognition

a large and highly productive oilfield is discovered with reserves of nearly 80 million cubic meters and the highest single-well daily production in the oilfield is nearly 290 cubic meters.