Structural evolution difference and hydrocarbon accumulation model of steep slope zone in Lufeng 13 Sag of the Pearl River Mouth Basin
-
摘要:
陆丰13洼是珠一坳陷的主力富生烃洼陷之一，但商业性油气发现仅集中在洼陷斜坡带和中央背斜带，拓展陡坡带勘探新领域尤为迫切。基于研究区联片三维地震解释和构造解析，整体解剖了陆丰13洼陡坡带的构造样式，揭示了陡坡带的分段分期差异演化特征，进而将陡坡带划分为继承型、改造型和迁移型3种构造类型以及单断继承型、双断继承型、迁移型、滑脱改造型、底侵改造型和构造转换带6种构造样式。结合研究区主控洼断裂分段断裂活动性的定量分析，提出了针对复杂陡坡带“动中有静、陡中有缓”构造时空格架的研究思路，厘清了陡坡带各段的时空演化特征，从源头上探索了陡坡带古近系规模输砂部位的时空分布特征，最终优选了陡坡带的3个勘探有利区并预测了其油气成藏模式，上述认识将为陆丰13洼陡坡带的油气勘探研究提供借鉴和参考。
Abstract:Lufeng 13 Sag is one of the main hydrocarbon rich basins in the Zhuyi Depression. However, commercial oil and gas discoveries are concentrated in the slope zone and central anticline zone of the depression only, making it particularly urgent to expand the exploration into steep slope zones. Based on the three-dimensional seismic interpretation and structural analysis of the research area, the structural style of the steep slope zone in Lufeng 13 Sag was dissected as a whole, revealing the segmented and staged evolution characteristics of the steep slope zone. The steep slope zone was divided into three structural types of inheritance, transformation, and migration, as well as six structural styles of single fault inheritance, double fault inheritance, migration, slip transformation, bottom invasion transformation, and structural transformation. Based on the quantitative analysis of the segmented fault activity in the main control zone of the research area, an approach was proposed to construct a spatiotemporal framework for complex steep slope zones with "dynamic and static, steep and gentle" structures. The spatiotemporal evolution characteristics of each section of the steep slope zone were clarified, and the spatiotemporal distribution characteristics of the Paleogene large-scale sand transport in the steep slope zone were clarified from the source. Finally, three exploration favorable areas in the steep slope zone were selected and their oil and gas accumulation patterns were predicted. The above understanding provided a reference and guidance for oil and gas exploration in the steep slope zone of the Lufeng 13 Sag.
-
-
[1] 米立军,张向涛,汪旭东,等. 陆丰凹陷古近系构造-沉积差异性及其对油气成藏的控制[J]. 中国海上油气,2018,30(5):1-10.
MI L J,ZHANG X T,WANG X D,et al. Tectonic and sedimentary differences of Paleogene and their control on hydrocarbon accumulation in Lufeng Sag,Pearl River Mouth Basin[J]. China Offshore Oil and Gas,2018,30(5):1-10.
[2] 张文昭,张厚和,李春荣,等. 珠江口盆地油气勘探历程与启示[J]. 新疆石油地质,2021,42(3):346-352,363.
ZHANG W Z,ZHANG H B,LI C R,et al. Petroleum exploration history and enlightenment in Pearl River Mouth Basin[J],Xinjiang Petroleum Geology,2021,42(3):346-352,363.
[3] 刘军,蔡哲,庞雄奇,等. 珠江口盆地陆丰凹陷古近系多动力-多期次-多要素复合成藏区定量预测与评价[J]. 地球科学,2022,47(7):2481-2493. doi: 10.3321/j.issn.1000-2383.2022.7.dqkx202207014
LIU J,CAI Z,PANG X Q,et al. Quantitative prediction and evaluation of Paleogene favorable hydrocarbon accumulation areas with multi-dynamic-stage-factor combination in Lufeng Sag,Pearl River Mouth Basin[J]. Earth Science,2022,47(7):2481-2493. doi: 10.3321/j.issn.1000-2383.2022.7.dqkx202207014
[4] 彭光荣,庞雄奇,徐帜,等. 珠江口盆地陆丰南地区古近系全油气系统特征与油气藏有序分布[J]. 地球科学,2022,47(7):2494-2508. doi: 10.3321/j.issn.1000-2383.2022.7.dqkx202207015
PENG G R,PANG X Q,XU Z,et al. Characteristics of Paleogene whole petroleum system and orderly distribution of oil and gas reservoirs in south Lufeng Depression,Pearl River Mouth Basin[J]. Earth Science,2022,47(7):2494-2508. doi: 10.3321/j.issn.1000-2383.2022.7.dqkx202207015
[5] 张向涛,汪旭东,舒誉,等. 珠江口盆地陆丰凹陷大中型油田地质特征及形成条件[J]. 中南大学学报(自然科学版),2017,48(11):2979-2989.
ZHANG X T,WANG X D,SHU Y,et al. Geological characteristics and forming conditions of large and medium oilfields in Lufeng Sag of Eastern Pearl River Mouth Basin[J]. Journal of Central South University (Science and Technology),2017,48(11):2979-2989.
[6] 汪旭东,张向涛,林鹤鸣,等. 珠江口盆地陆丰13洼复式油气成藏条件、分布规律及勘探潜力[J]. 中国海上油气,2018,30(3):19-27.
WANG X D,ZHANG X T,LIN H M,et al. Reservoir-forming conditions,oil distribution and exploration potential of compound hydrocarbon reservoirs in the Lufeng 13 Sag in Pearl River Mouth basin[J]. China Offshore Oil and Gas,2018,30(3):19-27.
[7] 汪旭东,张向涛,林鹤鸣,等. 珠江口盆地陆丰13洼陷中央背斜带地质构造特征及对油气成藏的控制作用[J]. 石油学报,2019,40(1):56-66. doi: 10.7623/syxb201901004
WANG X D,ZHANG X T,LIN H M,et al. Geological structure characteristics of central anticline zone in Lufeng 13 Subsag,Pearl River Mouth Basin and its control effect of hydrocarbon accumulation[J]. Acta Petrolei Sinica,2019,40(1):56-66. doi: 10.7623/syxb201901004
[8] 代一丁,牛子铖,汪旭东,等. 珠江口盆地陆丰凹陷古近系与新近系油气富集规律的差异及其主控因素[J]. 石油学报,2019,40(增刊1):41-52.
DAI Y D NIU Z C,WANG X D,et al. Differences of hydrocarbon enrichment regularities and their main controlling factors between Paleogene and Neogene in Lufeng Sag,Pearl River Mouth Basin[J]. Acta Petrolei Sinica,2019,40(s1):41-52.
[9] 贺勇,邱欣卫,雷永昌等. 珠江口盆地陆丰13东洼新生代构造演化与油气成藏特征[J]. 岩性油气藏,2023,35(1):74-82. doi: 10.12108/yxyqc.20230107
HE Y,QIU X W,LEI Y C,et al. Tectonic evolution and hydrocarbon accumulation characteristics of Cenozoic in eastern Lufeng 13 Subsag,Pearl River Mouth Basin[J]. Lithologic Reservoirs,2023,35(1):74-82. doi: 10.12108/yxyqc.20230107
[10] 何雁兵,肖张波,郑仰帝,等. 珠江口盆地陆丰13洼转换带中生界潜山成藏特征[J]. 岩性油气藏,2023,35(3):18-28. doi: 10.12108/yxyqc.20230302
HE Y B,XIAO Z B,ZHENG Y D,et al. Hydrocarbon accumulation characteristics of Mesozoic Lufeng 7-9 buried hill in Lufeng 13 Subsag transition zone,Pearl River Mouth Basin[J]. Lithologic Reservoirs,2023,35(3):18-28. doi: 10.12108/yxyqc.20230302
[11] 唐旭,张向涛,余一欣,等. 珠江口盆地陆丰凹陷南部古近系断裂发育特征与油气成藏[J]. 海洋地质与第四纪地质,2023,43(3):132-143.
TANG X,ZHANG X T,YU Y X,et al. Fault characteristics and hydrocarbon accumulation in the southern Lufeng Sag,Pearl River Mouth Basin[J]. Marine Geology & Quaternary Geology,2023,43(3):132-143.
[12] 雷永昌,彭光荣,何雁兵,等. 珠江口盆地陆丰凹陷古近系储层特征及优质储层主控因素[J]. 海洋地质前沿,2024,40(2):37-49.
LEI Y C,PENG G R,HE Y B,et al. Leogene reservoir characteristics and main controlling factors of high-quality reservoirs in Lufeng Sag,Pearl River Mouth Basin[J]. Marine Geology Frontiers,2024,40(2):37-49.
[13] 肖张波,雷永昌,邱欣卫,等. 泊松阻抗属性在陆丰南古近系低渗砂岩储层“甜点”识别中的应用[J]. 海洋地质前沿,2022,38(6):70-77.
XIAO Z B,LEI Y C,QIU X W,et al. Application of Poisson impedance for identification of sweet spot in the Paleogene low-permeability sandstone reservoir in Lufengnan Sag[J]. Marine Geology Frontiers,2022,38(6):70-77.
[14] 钟锴,肖张波,朱伟林,等. 珠江口盆地陆丰凹陷西北洼原型盆地及迁移演化特征[J]. 海洋地质与第四纪地质,2025,45(1):1-10.
ZHONG K,XIAO Z B,ZHU W L,et al. Tectonic migration of prototype basins in northwest subsag of Lufeng Sag,the Pearl River Mouth Basin[J]. Marine Geology & Quaternary Geology,2025,45(1):1-10.
[15] 朱筱敏,葛家旺,吴陈冰洁,等. 珠江口盆地陆丰凹陷深层砂岩储层特征及主控因素[J]. 石油学报,2019,40(s1):69-80.
ZHU X M,GE J W,WU C B J,et al. Reservoir character main controlling factors of deep sands and stone in Lufeng Sag,Pearl River Mouth Basin[J]. Acta Petrolei Sinica,2019,40(s1):69-80.
[16] 代向明,李志刚,孙闯,等. 正断层三维生长和连接过程研究:以南海北部陆丰凹陷为例[J]. 地质学报,2022,96(6):1922-1936.
DAI X M,LI Z G,SUN C,et al. 3D structural growth and lateral linkage of normal fault system:a case study from Lufeng Sag in the northern South China Sea[J]. Acta Geologica Sinica,96(6):1922-1936.
[17] 朱文奇,黄胜兵,郭刚,等. 珠江口盆地陆丰13西北洼古近系构造沉积演化及资源潜力[J]. 中国海上油气,2023,35(2):13-22.
ZHU W Q,HUANG S B,GUO G,et al. Tectonic and sedimentary evolution of Paleogene and resource potential in northwestern Lufeng 13 Sag,Pearl River Mouth Basin[J]. China Offshore Oil and Gas,2023,35(2):13-22.
[18] 钟锴,李洪博,刘绍文,等. 珠江口盆地陆丰13洼原型盆地类型与分段差异演化[J]. 中国海上油气,2024,36(3):60-69.
ZHONG K,LI H B,LIU S W,et al. Prototype basin types and segmental differential evolution of LF13 Subsag in the Pearl River Mouth Basin[J]. China Offshore Oil and Gas,2024,36(3):60-69.
-
下载:
图(8)
计量
- 文章访问数: 26
- PDF下载数: 6
- 施引文献: 0