琼东南盆地深水区流体势场恢复与有利区带研究
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摘要
勘探实践表明,油气运移误判严重制约了琼东南盆地深水区的油气勘探,导致下一步勘探方向不明,而流体势是运移研究中的关键一环。为解决这个问题,基于区内构造和沉积等资料,在明确构造对流体势场控制机理的基础上,利用盆地模拟软件,恢复了深水区流体势场演化史。研究表明,新生代的构造运动影响流体势场的弹性能、界面能、重力能的形成及演化,控制了区内的油气运移,形成了深水区流体势横向上由凹内到凹外,纵向上由深层到浅层逐渐降低的特征。同时,构造运动也是深水区流体势能量场不断调整的诱因,伴随着地下油气大量的集中运移和油气田的形成。基于此,优选出位于凹内深部高势烃源浅层低势区的陵水—宝岛凹中反转构造带,以及被高势烃源包围低势区的松南低凸起披覆背斜构造带,作为深水区继中央峡谷外的最有利区带。研究成果对指导深水区下一步勘探方向的选择有重要意义。
Exploration practices show that the hydrocarbon migration misjudgment severely restricts the hydrocarbon exploration and the future exploration direction in the deep-water area of Southeast Hainan Basin. Fluid potential is one of the key aspects in the hydrocarbon migration. The structure,sedimentation and other data were used to solve this problem. Based on the structure control mechanism of the fluid potential field,the basin simulation software was used to restore the evolution history of the fluid potential field in the deep-water area. Research indicates that the Cenozoic tectonic movement affects the generation and evolution of elastic energy,interfacial energy and gravity energy for the fluid potential field. The hydrocarbon migration in this area is also dependent on the Cenozoic tectonic movement. The fluid potential in the deep-water area is characterized by a decrease from the inner concave to outer concave in the lateral direction and a decrease from deep to shallow in the longitudinal direction. Tectonic movement is also considered as the cause of continuous fluid potential field adjustment in the deep-water area,which was accompanied by the large-scale hydrocarbon migration and accumulation. The most favorable zone outside the central canyon in the deep-water area were optimized based on the above,including the Lingshui-Baodao concave center inversion structural zone in the shallow low-potential area of inner concave deep part with high-potential hydrocarbon source and the Songnan low-potential low-bulging draping anticline structure zone surrounded by the high-potential hydrocarbon source. This research could provide certain guidance for the future hydrocarbon exploration in the deep-water area.
Exploration practices show that the hydrocarbon migration misjudgment severely restricts the hydrocarbon exploration and the future exploration direction in the deep-water area of Southeast Hainan Basin. Fluid potential is one of the key aspects in the hydrocarbon migration. The structure,sedimentation and other data were used to solve this problem. Based on the structure control mechanism of the fluid potential field,the basin simulation software was used to restore the evolution history of the fluid potential field in the deep-water area. Research indicates that the Cenozoic tectonic movement affects the generation and evolution of elastic energy,interfacial energy and gravity energy for the fluid potential field. The hydrocarbon migration in this area is also dependent on the Cenozoic tectonic movement. The fluid potential in the deep-water area is characterized by a decrease from the inner concave to outer concave in the lateral direction and a decrease from deep to shallow in the longitudinal direction. Tectonic movement is also considered as the cause of continuous fluid potential field adjustment in the deep-water area,which was accompanied by the large-scale hydrocarbon migration and accumulation. The most favorable zone outside the central canyon in the deep-water area were optimized based on the above,including the Lingshui-Baodao concave center inversion structural zone in the shallow low-potential area of inner concave deep part with high-potential hydrocarbon source and the Songnan low-potential low-bulging draping anticline structure zone surrounded by the high-potential hydrocarbon source. This research could provide certain guidance for the future hydrocarbon exploration in the deep-water area.
引文
[1]王振峰,孙志鹏,张迎朝,等.南海北部琼东南盆地深水中央峡谷大气田分布与成藏规律[J].中国石油勘探,2016,21(4):54-64.
[2]赵民,张晓宝,吉利明,等.琼东南盆地构造演化特征及其对油气藏的控制浅析[J].天然气地球科学,2010,21(3):494-502.
[3]张迎朝,甘军,杨希冰,等.琼东南盆地陵水凹陷构造演化及其对深水大气田形成的控制作用[J].海洋地质前沿,2017,33(10):22-31.
[4]祝建军,张晓宝,张功成,等.琼东南盆地异常压力分布与形成机理探讨[J].天然气地球科学,2011,22(2):324-330.
[5]施小斌,王振峰,蒋海燕,等.张裂型盆地地热参数的垂向变化与琼东南盆地热流分布特征[J].地球物理学报,2015,58(3):939-952.
[6]朱光辉,陈刚,刁应护,等.琼东南盆地温压场特征及其与油气运聚的关系[J].中国海上油气,2000,14(1):29-36.
[7]蔡周荣,刘维亮,万志峰,等.南海北部新生代构造运动厘定及与油气成藏关系探讨[J].海洋通报,2010,19(2):161-165.
[8]雷超,任建业,张静,等.南海构造变形分区及成盆过程[J].地球科学---中国地质大学学报,2015,40(4):744-762.
[9]郭鹏,李春林,哈文雷,等.构造应力场与油气运聚规律探讨[J].特种油气藏,2011,18(5):64-67.
[10]付广,杨勉,等.断裂及砂体分布连续性对流体势空间分布特征的影响及其研究意义[J].复式油气田,2000,4(1):49-52.
[11]付广,薛永超,吕延防,等.断层对流体势空间分布的影响及研究方法[J].断块油气藏,2001,8(2):1-5.
[12]黄保家,李绪深,王振峰,等.琼东南盆地深水区烃源岩地球化学特征与天然气潜力[J].中国海上油气,2012,24(4):1-7.
[13]张迎朝,徐新德,甘军,等.琼东南盆地深水大气田地质特征、成藏模式及勘探方向研究[J].地质学报,2017,91(7):1620-1633.
[14]江汝锋,郭明刚,朱继田,等.琼东南盆地深水区宝岛凹陷3D输导体系评价[J].西南石油大学学报,2018,40(2):57-66.
[15]周杰,朱继田,杨金海,等.琼东南盆地深水区宝南断阶带断裂特征及天然气地质意义[J].天然气地球科学,2018,29(1):87-95.
[16]郭明刚,苟再辉,孙志鹏,等.南海北部琼东南盆地深水区陵水凹陷南部油气成藏条件[J].海相油气地质,2016,21(4):34-42.
[17]常波涛,于开平,孙连浦,等.基于流体势约束的潜山油气二次运移优势方向选择---以胜利油田桩海地区古生界潜山为例[J].地质科技情报,2005,24(2):39-44.
[18]刘卫民,陶柯宇,高秀伟,等.含油气盆地远距离成藏模式与主控因素[J].地质论评,2015,61(3):621-634.
[19]朱光有,杨海军,张斌,等.油气超长运移距离[J].岩石学报,2013,29(9):3192-3212.
[20]梁江平.松辽盆地西部斜坡青山口组三段中上部岩性地层圈闭有利区带预测[J].大庆石油地质与开发,2018,37(4):1-9.
[21]谭万仓.群克构造志留系储层包裹体特征与油气成藏过程[J].大庆石油地质与开发,2018,37(4):38-43.
[22]杨东升,赵志刚,杨海长,等.琼东南盆地乐东-陵水凹陷底辟构造及其油气地质意义[J].中国石油勘探,2018,23(3):64-73.
[23]郭克成,张琪,贾国强,等.温米地区中浅层油气成藏特征与精细勘探方向[J].特种油气藏,2014,21(6):33-37.
[2]赵民,张晓宝,吉利明,等.琼东南盆地构造演化特征及其对油气藏的控制浅析[J].天然气地球科学,2010,21(3):494-502.
[3]张迎朝,甘军,杨希冰,等.琼东南盆地陵水凹陷构造演化及其对深水大气田形成的控制作用[J].海洋地质前沿,2017,33(10):22-31.
[4]祝建军,张晓宝,张功成,等.琼东南盆地异常压力分布与形成机理探讨[J].天然气地球科学,2011,22(2):324-330.
[5]施小斌,王振峰,蒋海燕,等.张裂型盆地地热参数的垂向变化与琼东南盆地热流分布特征[J].地球物理学报,2015,58(3):939-952.
[6]朱光辉,陈刚,刁应护,等.琼东南盆地温压场特征及其与油气运聚的关系[J].中国海上油气,2000,14(1):29-36.
[7]蔡周荣,刘维亮,万志峰,等.南海北部新生代构造运动厘定及与油气成藏关系探讨[J].海洋通报,2010,19(2):161-165.
[8]雷超,任建业,张静,等.南海构造变形分区及成盆过程[J].地球科学---中国地质大学学报,2015,40(4):744-762.
[9]郭鹏,李春林,哈文雷,等.构造应力场与油气运聚规律探讨[J].特种油气藏,2011,18(5):64-67.
[10]付广,杨勉,等.断裂及砂体分布连续性对流体势空间分布特征的影响及其研究意义[J].复式油气田,2000,4(1):49-52.
[11]付广,薛永超,吕延防,等.断层对流体势空间分布的影响及研究方法[J].断块油气藏,2001,8(2):1-5.
[12]黄保家,李绪深,王振峰,等.琼东南盆地深水区烃源岩地球化学特征与天然气潜力[J].中国海上油气,2012,24(4):1-7.
[13]张迎朝,徐新德,甘军,等.琼东南盆地深水大气田地质特征、成藏模式及勘探方向研究[J].地质学报,2017,91(7):1620-1633.
[14]江汝锋,郭明刚,朱继田,等.琼东南盆地深水区宝岛凹陷3D输导体系评价[J].西南石油大学学报,2018,40(2):57-66.
[15]周杰,朱继田,杨金海,等.琼东南盆地深水区宝南断阶带断裂特征及天然气地质意义[J].天然气地球科学,2018,29(1):87-95.
[16]郭明刚,苟再辉,孙志鹏,等.南海北部琼东南盆地深水区陵水凹陷南部油气成藏条件[J].海相油气地质,2016,21(4):34-42.
[17]常波涛,于开平,孙连浦,等.基于流体势约束的潜山油气二次运移优势方向选择---以胜利油田桩海地区古生界潜山为例[J].地质科技情报,2005,24(2):39-44.
[18]刘卫民,陶柯宇,高秀伟,等.含油气盆地远距离成藏模式与主控因素[J].地质论评,2015,61(3):621-634.
[19]朱光有,杨海军,张斌,等.油气超长运移距离[J].岩石学报,2013,29(9):3192-3212.
[20]梁江平.松辽盆地西部斜坡青山口组三段中上部岩性地层圈闭有利区带预测[J].大庆石油地质与开发,2018,37(4):1-9.
[21]谭万仓.群克构造志留系储层包裹体特征与油气成藏过程[J].大庆石油地质与开发,2018,37(4):38-43.
[22]杨东升,赵志刚,杨海长,等.琼东南盆地乐东-陵水凹陷底辟构造及其油气地质意义[J].中国石油勘探,2018,23(3):64-73.
[23]郭克成,张琪,贾国强,等.温米地区中浅层油气成藏特征与精细勘探方向[J].特种油气藏,2014,21(6):33-37.
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