泌阳凹陷梨树凹区块油气成藏期次与成藏过程
|
摘要
梨树凹区块位于泌阳凹陷南部陡坡带东段,是受凹陷扩张后期的反转挤压及不均一抬升作用形成的较为明显的鼻状构造。研究区核桃园组储集层主要为侯庄辫状河三角洲前缘亚相的砂体,属中孔、中渗储集层。油源对比结果表明油气主要来自深凹区同层位烃源岩,且存在较为明显的混源现象。根据包裹体的镜下特征、均一化温度,结合典型钻井的埋藏史、热演化史结果,确定该区主要有两期成藏:廖庄末期为主要成藏期,期间核三上段成熟油气及核二段未熟-低熟油气大规模注入;核一末期小规模油气运移散失,是次要成藏期。
Located in southern steep slope of Biyang Depression,Lishuwa Block is formed by late reversal extrusion of the fracture extensional fault depression at the eastern boundary and then by uneven uplifts of the late sag.The reservoirs in this area are mainly sand bodies of Houzhuang braided river delta front,belonging to media-porosity and media-permeability reservoir.Oil-source correlation shows that the oil and gas were mainly from the same formation source rocks of the furrow area,where there is obvious mixed source.Based on the microscopic characteristics of the brine inclusions,homogenization temperatures,and combined with typical wells' burial history,thermal evolution history,this paper reveals that there are mainly two hydrocarbon accumulation stages.Specifically,the end of Eh1 is the minor accumulation period with a small-scale oil and gas migration loss,and the later Liaozhuang stage is the main accumulation stage with mass oil and gas accumulation.During the period,the mature oil &gas of Eh3 and the immature-low mature oil & gas of Eh2 were injected into the upper part of the core.
Located in southern steep slope of Biyang Depression,Lishuwa Block is formed by late reversal extrusion of the fracture extensional fault depression at the eastern boundary and then by uneven uplifts of the late sag.The reservoirs in this area are mainly sand bodies of Houzhuang braided river delta front,belonging to media-porosity and media-permeability reservoir.Oil-source correlation shows that the oil and gas were mainly from the same formation source rocks of the furrow area,where there is obvious mixed source.Based on the microscopic characteristics of the brine inclusions,homogenization temperatures,and combined with typical wells' burial history,thermal evolution history,this paper reveals that there are mainly two hydrocarbon accumulation stages.Specifically,the end of Eh1 is the minor accumulation period with a small-scale oil and gas migration loss,and the later Liaozhuang stage is the main accumulation stage with mass oil and gas accumulation.During the period,the mature oil &gas of Eh3 and the immature-low mature oil & gas of Eh2 were injected into the upper part of the core.
引文
[1]王敏,秦伟军,赵追,等.南襄盆地泌阳凹陷油气藏形成条件及聚集规律[J].石油与天然气地质,2001,22(2):169-172.
[2]韩春林,泌阳凹陷梨树凹地区储层特征及成因分析[J].石油地质与工程,2014,28(2):39-45.
[3]蔡佳,姜华,赵忠新,等.泌阳凹陷下二门油田南部H13层序沉积体系及沉积相演化[J].岩性油气藏,2009,21(4):92-95.
[4]朱筱敏,董艳蕾,胡廷惠,等.精细层序地层格架与地震沉积学研究:以泌阳凹陷核桃园组为例[J].石油与天然气地质,2011,32(4):615-624.
[5]吴志斌.大民屯凹陷前进潜山带沈288区块太古宇潜山油藏特征[J].地质科技情报,2015,34(3):139-144.
[6]李志明,张隽,余晓露,等.南襄盆地泌阳凹陷烃源岩成熟度厘定及其意义[J].石油实验地质,2013,35(1):76-86.
[7]罗家群.泌阳凹陷核桃园组未熟-低熟油地球化学特征及精细油源对比[J].地质科技情报,2008,27(5):77-86.
[8]吕明久.泌阳凹陷下二门油田烃类包裹体特征及油气成藏期次分析[J].石油天然气学报,2010,32(6):32-36.
[9]罗家群.泌阳凹陷深层系油气成藏样式[J].石油与天然气地质,2003,24(1):55-57.
[10]夏东领,杨道庆,林社卿,等.南襄盆地中、新生代构造演化与油气成藏[J].油气地质与采收率,2007,14(6):32-34.
[11]刘建,任莹,王丹蕾,等.蠡县斜坡北段储层流体包裹体特征及成藏时期[J].地质科技情报,2016,35(1):53-58.
[12]尹伟,吴胜和,孙琦,等.泌阳凹陷下二门油田油气成藏机制探讨[J].矿物岩石地球化学通报,2006,25(1):75-81.
[13]姜大朋,王文勇,高翔,等.从内部结构出发探讨断裂控藏机理及模式:以珠江口盆地珠一坳陷为例[J].地质科技情报,2016,35(4):91-96.
[2]韩春林,泌阳凹陷梨树凹地区储层特征及成因分析[J].石油地质与工程,2014,28(2):39-45.
[3]蔡佳,姜华,赵忠新,等.泌阳凹陷下二门油田南部H13层序沉积体系及沉积相演化[J].岩性油气藏,2009,21(4):92-95.
[4]朱筱敏,董艳蕾,胡廷惠,等.精细层序地层格架与地震沉积学研究:以泌阳凹陷核桃园组为例[J].石油与天然气地质,2011,32(4):615-624.
[5]吴志斌.大民屯凹陷前进潜山带沈288区块太古宇潜山油藏特征[J].地质科技情报,2015,34(3):139-144.
[6]李志明,张隽,余晓露,等.南襄盆地泌阳凹陷烃源岩成熟度厘定及其意义[J].石油实验地质,2013,35(1):76-86.
[7]罗家群.泌阳凹陷核桃园组未熟-低熟油地球化学特征及精细油源对比[J].地质科技情报,2008,27(5):77-86.
[8]吕明久.泌阳凹陷下二门油田烃类包裹体特征及油气成藏期次分析[J].石油天然气学报,2010,32(6):32-36.
[9]罗家群.泌阳凹陷深层系油气成藏样式[J].石油与天然气地质,2003,24(1):55-57.
[10]夏东领,杨道庆,林社卿,等.南襄盆地中、新生代构造演化与油气成藏[J].油气地质与采收率,2007,14(6):32-34.
[11]刘建,任莹,王丹蕾,等.蠡县斜坡北段储层流体包裹体特征及成藏时期[J].地质科技情报,2016,35(1):53-58.
[12]尹伟,吴胜和,孙琦,等.泌阳凹陷下二门油田油气成藏机制探讨[J].矿物岩石地球化学通报,2006,25(1):75-81.
[13]姜大朋,王文勇,高翔,等.从内部结构出发探讨断裂控藏机理及模式:以珠江口盆地珠一坳陷为例[J].地质科技情报,2016,35(4):91-96.