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Tectonic differentiation of basins in the northern South China Sea and its control on hydrocarbon accumulation 认领 引用
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作者 XIE Yuhong FAN Caiwei +2 位作者 TONG Chuanxin YOU Junjun ZHOU Gang 《Petroleum Exploration and Development》 SCIE 2026年第2期285-298,共14页
Based on seismic data,well log data,and analyses of hydrocarbon accumulation elements in typical oil and gas fields,this study systematically investigates the tectonic differentiation and its control on hydrocarbon ac... Based on seismic data,well log data,and analyses of hydrocarbon accumulation elements in typical oil and gas fields,this study systematically investigates the tectonic differentiation and its control on hydrocarbon accumulation in four major Cenozoic petroliferous basins(Beibuwan,Pearl River Mouth,Qiongdongnan and Yinggehai)of the northern South China Sea.The results show that the tectonic evolution in the study area exhibits a significant differentiation characterized by“east-west staging and north-south zonation”,with major subsidence events occurred progressively later from west to east and from north to south,allowing the basins to be classified into two types:passive continental margin basins and transform continental margin basins.This tectonic differentiation governs hydrocarbon accumulation through a“triple-control”mechanism:subsidence-thermal evolution divergence controls source rock type and maturation;tectonic-depositional cycle coupling controls reservoirrap type and reservoir-caprock assemblage;and structural configurations control hydrocarbon accumulation,preservation and enrichment patterns.Moderate heat flow on the northern shelf favors oil generation from the Paleogene lacustrine source rocks,while high geothermal gradients in the southern deep-water area promote late-stage rapid gas generation from coal measures,forming the resource distribution framework with“oil in the north and gas in the south”;Tectonic-depositional coupling regulates reservoir distribution and reservoir-caprock assemblage effectiveness,with the rift-stage faulting inducing isolated lacustrine delta reservoirs,the southward shift of subsidence during the rift-drift transition giving rise to extensive marine delta sandstones,the detachment faults in deep-water areas governing the development of canyon channels,and regional transgressive mudstones and overpressure mudstones serving as key caprocks;Structural styles dictate accumulation models,including primary oil reservoirs characterized by the association of weakly reworked traps and regional seals,deep-water gas reservoirs characterized by shelf-break controlled sand and high heat flow-driven gas migration,composite gas reservoirs characterized by transfer zone controlled reservoirs and overpressure mudstone sealing,and late-stage rapid hydrocarbon accumulation characterized by strike-slip stress transition and diapir conduit.Analysis of hydrocarbon accumulation in typical oil and gas fields validates these cognitions,revealing the comprehensive control of tectonic evolution on source rock maturation,reservoir distribution,trap types and preservation conditions.Based on these findings,it is recommended to differentiate exploration strategies by areas and layers,with focus on structural-lithological traps under high heat flow setting in deep-water areas and primary oil reservoirs with weak reworking in shallow-water areas. 展开更多
关键词 northern South China Sea basins tectonic differentiation oil in the north and gas in the south accumulation model Beibuwan Basin Pearl River Mouth Basin Qiongdongnan Basin Yinggehai Basin
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南海北部盆地群构造差异性及其对油气成藏的控制作用 认领 引用
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作者 谢玉洪 范彩伟 +2 位作者 童传新 游君君 周刚 《石油勘探与开发》 EI CAS CSCD 北大核心 2026年第2期245-256,共12页
基于地震数据、井筒资料和典型油气田成藏要素解剖,系统研究南海北部的北部湾、珠江口、琼东南和莺歌海4个新生代含油气盆地的构造差异性及其对油气成藏的控制作用。研究表明:①该区构造演化呈现“东西分期、南北分带”的显著差异,主要... 基于地震数据、井筒资料和典型油气田成藏要素解剖,系统研究南海北部的北部湾、珠江口、琼东南和莺歌海4个新生代含油气盆地的构造差异性及其对油气成藏的控制作用。研究表明:①该区构造演化呈现“东西分期、南北分带”的显著差异,主要构造沉降时间自西向东、由北向南逐渐变晚,可划分为被动陆缘型盆地和转换陆缘型盆地两种类型。②构造差异控藏主要表现为“沉降-热演化差异控制烃源岩类型与成熟演化;构造-沉积旋回耦合控制储集体和圈闭类型、储盖组合特征;构造属性控制成藏过程、油气保存及富集模式”三联控制机制:北部陆架适度热流保障古近系湖相烃源岩生油,南部深水区高地温梯度促进煤系烃源岩晚期快速生气,形成“北油南气”的油气分布格局;构造-沉积耦合控制储集体分布与储-盖组合有效性,裂陷期断裂控盆形成孤立湖相三角洲储集体,断拗期沉降南迁发育广覆式海相三角洲砂岩,深水区拆离断层则控制峡谷水道砂体发育,区域性海侵泥岩与超压泥岩构成关键盖层;发育弱改造圈闭与区域盖层组合的原生油藏模式、陆架坡折控砂与高热流促使成气提速的深水气藏模式、构造转换带控储与超压泥岩封盖的复合气藏模式以及走滑应力转换与底辟构造输导油气的晚期快速成藏模式。③典型油气田成藏剖析实证了上述地质认识,揭示了构造演化对烃源岩热演化、储集体分布、圈闭类型及保存条件的综合控制作用。基于上述地质认识,建议深水区主攻高热流背景下构造-岩性复合圈闭,浅水区主攻弱改造原生油藏,分区分层制定勘探策略。 展开更多
关键词 南海北部盆地群 构造差异性 北油南气 成藏模式 北部湾盆地 珠江口盆地 琼东南盆地 莺歌海盆地
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基于沉积正演模拟约束的源-汇体系定量表征:以文昌A凹陷为例 认领 引用
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作者 孙文钊 陈岳 +7 位作者 徐守立 李明 王力 张建新 黄灿 何卫军 童传新 郭建华 《中南大学学报（自然科学版）》 EI CSCD 北大核心 2026年第7期3112-3131,共20页
本文以珠江口盆地文昌凹陷恩平组-珠海组三段为例,针对多幕构造活动导致的物源多向性供给、砂体迁移规律不清及储层预测多解性等难题,提出结合沉积正演模拟约束的源-汇体系定量表征方法。首先,基于高精度地震、测录井、岩心、分析化验... 本文以珠江口盆地文昌凹陷恩平组-珠海组三段为例,针对多幕构造活动导致的物源多向性供给、砂体迁移规律不清及储层预测多解性等难题,提出结合沉积正演模拟约束的源-汇体系定量表征方法。首先,基于高精度地震、测录井、岩心、分析化验数据等资料,结合构造及湖平面变化对基准面的控制,重建古地貌与源-汇系统要素(物源区、搬运通道及沉积区)的时空配置关系,明确不同时期转换带背景下多物源供给模式及对沉积物分散路径的控制作用。其次,利用Dionisos沉积正演模拟平台,耦合构造活动、湖平面变化及沉积动力学参数,再现了恩平组沉积期南断裂陡坡带小源短扇、珠海组三段大型转换输砂沉积演化过程。最后,以正演模拟生成的砂体展布大数据为约束,结合岩石物理参数,采用Petrel遗传反演技术,精细刻画了有利储层砂体空间分布。研究结果表明,陡坡带扇三角洲的发育与迁移受控于基准面升降旋回与物源供给速率的动态平衡,恩平组小规模扇体孤立发育,珠海组三段时期不同物源扇体迁移叠置,多砂体交汇区是潜在的岩性圈闭目标,为文昌A凹陷深层勘探油田区滚动拓展领域提供了可靠依据。本研究提出的“源-汇系统重构-正演模拟-反演优化”技术体系,实现了深层隐蔽砂体的预测,可为复杂构造背景下岩性油气藏勘探提供实践范例。 展开更多
关键词 源-汇系统 陆相断陷湖盆 沉积正演模拟 储层遗传反演 文昌A凹陷 恩平组
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The solution and exsolution characteristics of natural gas components in water at high temperature and pressure and their geological meaning 认领 引用 被引量：4
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作者 Gao Gang Huang Zhilong +2 位作者 Huang Baojia Yuan Jian Tong Chuanxin 《Petroleum Science》 SCIE CAS CSCD 2012年第1期25-30,共6页
The processes of solution in, and exsolution from, formation water influence the component content of natural gas by contrasting the relative contents of components before the natural gas dissolves in water and those ... The processes of solution in, and exsolution from, formation water influence the component content of natural gas by contrasting the relative contents of components before the natural gas dissolves in water and those after exsolving from water under different conditions of high temperatures and pressures. Compared with the composition of original natural gas, the relative content of methane and nitrogen increased after the natural gas dissolved in water. The increase of nitrogen content exceeds that of methane, but the content of ethane, propane, pentane etc reduced. At the same temperature and with pressure increasing the content of methane increased and that of heavier hydrocarbons reduced. At the same pressure the content of methane increased quickly from 90~C to 120~C, and the content of heavier hydrocarbons reduced. But at even higher temperatures, the increase of methane slowed down and the content of heavier hydrocarbons increased slightly. At the same temperature and different pressures, heavier hydrocarbons reduced much more with increasing carbon atom number, while with temperature increasing the content difference of heavier hydrocarbons reduced. Therefore, the influence of the solution and exsolution should be considered in the study of the migration and accumulation mechanism of natural gas. 展开更多
关键词 Methane heavier hydrocarbon nitrogen formation water exsolution
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Geochemical behaviors of HPHT gas reservoirs in the Yinggehai Basin and the efficient gas accumulation mode in its diapir flanks 认领 引用 被引量：1
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作者 Tong Chuanxin Xie Yuhong +1 位作者 Huang Zhilong Ma Jian 《Natural Gas Industry B》 2015年第2期144-154,共11页
TheYinggehaiBasin is aCenozoic high-temperature and high-pressure basinwhere diapir and thermal fluid activitieswere so strong that the deeplysourced natural gas accumulated in the shallowtraps in the diapir structure... TheYinggehaiBasin is aCenozoic high-temperature and high-pressure basinwhere diapir and thermal fluid activitieswere so strong that the deeplysourced natural gas accumulated in the shallowtraps in the diapir structures.Atotal of 11 exploratorywellswere drilled in 8 diapir structures before 2010,but no commercial gas discoveries were made,provoking a hot debate on the possibility of discovering medium-to-large quality gas reservoirs in the middle and deep layers of the diaper structures.A comprehensive analysis of hydrocarbon generation kinetics,reservoir distribution and sealing conditions revealed the following findings.(1)Three gas-charging mechanisms were identified in the study area,namely slow free gas charging and accumulation under buoyancy,slowcharging,evolving and accumulation ofwater soluble gas,and mixed-phase episodic accumulation.(2)In the hightemperature and high-pressure zones in the core of the diapir,the early gas reservoirs experienced multi-stage transformation at later periods,thus the possibility of forming large gas reservoirs dominated by hydrocarbon is small.In the flanks of the diapir,the early gas reservoirsmay bewell preserved at later stages,thus it is possible to discover primary gas pools.In the non-diapir zones,water soluble gas reservoirsmay occur.(3)Three gas accumulation modes may exist in the study area,namely“the mixed-phase transformation mode”of semi-closed overpressure system in the core and periphery of a diapir,“the gas-phase seepage mode”in the flanks of a diapir,and“the water-phase desolvation mode”of a closed over-pressured system in the nondiapir zones.The analysis revealed that the failure of the previous exploratory drillingwas caused mainly by emplacing the wells in the core of the diapir structures.The geochemical behaviors further support that the flanks of a diapir is the favorable place for high-temperature and high-pressure gas accumulation.Exploration practices based on these understandings finally led to the discovery of the large Dongfang 13-1/13-2 gas fields. 展开更多
关键词 Yinggehai Basin Dongfang(DF)gas field High temperature High pressure Natural gas Diapir flank Accumulation mode
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深水井精细控压下套管研究 认领 引用 被引量：10
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作者 童传新 张海荣 +2 位作者 徐璧华 赵琥 崔策 《西南石油大学学报（自然科学版）》 CAS CSCD 北大核心 2021年第4期175-182,共8页
深水窄压力窗口地层给下套管带来了巨大挑战,下套管时产生的波动压力将导致井筒压力超过压力窗口上限而出现井漏,大大增加了作业时间,采用传统方法下套管时为了防止波动压力过大而超过安全压力窗口只能降低下套管速度,这样虽然在一定程... 深水窄压力窗口地层给下套管带来了巨大挑战,下套管时产生的波动压力将导致井筒压力超过压力窗口上限而出现井漏,大大增加了作业时间,采用传统方法下套管时为了防止波动压力过大而超过安全压力窗口只能降低下套管速度,这样虽然在一定程度上减小漏失风险但增大了作业成本,且这种方式不一定有效。因此,针对深水窄安全压力窗口地层下套管漏失风险问题,基于动态波动压力建立了深水窄安全压力窗口井筒压力控制模型;并在此基础上提出深水精细控压下套管方法。利用建立的模型分析井筒压力影响因素发现,井筒压力随着套管下入深度、最大下入速度、钻井液密度以及钻井液的屈服值、黏度的增大而增大。计算表明,深水精细控压下套管不但降低了漏失风险,还缩短了作业时间,降低了作业成本。 展开更多
关键词 深水 精细控压 下套管 波动压力 井漏
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莺歌海盆地莺东斜坡乐东区中深层地层水特征及其与油气关系 认领 引用 被引量：4
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作者 刘平 童传新 +2 位作者 曾小明 李伟 宋鹏 《海洋地质前沿》 CSCD 2019年第8期44-50,共7页
油气田伴生地层水地球化学特征蕴含多种油气地质及水文地质信息,可以为油气成藏的圈闭条件评价及展布特征分析等提供重要的信息和佐证。由于油气田地层水与油气藏伴生且受成烃成藏环境及后期保存条件等多种地质因素的影响,故其地质地球... 油气田伴生地层水地球化学特征蕴含多种油气地质及水文地质信息,可以为油气成藏的圈闭条件评价及展布特征分析等提供重要的信息和佐证。由于油气田地层水与油气藏伴生且受成烃成藏环境及后期保存条件等多种地质因素的影响,故其地质地球化学特征与油气运聚成藏过程及后期圈闭保存条件等密切相关。莺歌海盆地乐东区中深层高温超压大气田伴生地层水总矿化度异常高(60 000~80 000mg/L),pH值为6~8,属于弱酸—弱碱性的盐水和卤水,其地层水类型属CaCl2水型,为一种非常特殊的高矿化度气田伴生地层水。通过莺歌海盆地乐东区中深层气田伴生地层水pH值、常规离子组成、主要元素及其组合特点等统计分析,获取了这种高温超压大气田伴生地层水的大量地质地球化学信息,并深入分析探讨了其与天然气运聚成藏及其分布的成因联系。 展开更多
关键词 莺歌海盆地 乐东区中深层 大气田伴生地层水 高矿化度 天然气成藏
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Modbus通信协议在气田终端生产控制系统的应用 认领 引用 被引量：5
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作者 邓增利 童传新 +3 位作者 夏如君 熊永卫 邹宇雄 赵海亚 《电工技术》 2019年第14期14-16,19,共3页
为了解决海洋气田陆地终端新增危废品库房火气控制系统与DCS系统的数据通信问题,利用一台S7-200PLC作为数据转换设备,构建了数据通信的网络拓扑结构,通过Modbus通信的方式实现危废品库房智能设备与DCS系统的数据通信。
关键词 Modbus TCP DCS系统 数据通信 通信协议 海洋油气开发
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