CAJ | 학술논문

中国南方发育有下海上陆的多旋回生储盖组合,总体形成了震旦系—下古生界及中—上古生界2套大的海相成藏组合;平面上形成以江绍—十万大山断裂为界的南、北两大成藏区,其中北区发育2套组合,南区发育中—上古生界1套组合.平面上古油藏与油气显示分布受古隆起控制,油气成藏经历了加里东—海西期生油、印支期裂解成气、燕山—喜马拉雅期调整与改造3期以上事件.现今保存的海相油气藏具有明显的残留特征.综合分析认为,南方海相普遍存在勘探程度低、技术尚不成熟、油气成藏规律认识局限等方面的风险,其中常规油气勘探风险相对较高,海陆叠合盆地勘探风险相对较低,非常规页岩气勘探风险最低,并由此对南方海相进行了评价与有利区带优选.
중국남방발육유하해상륙적다선회생저개조합,총체형성료진단계—하고생계급중—상고생계2투대적해상성장조합;평면상형성이강소—십만대산단렬위계적남、북량대성장구,기중북구발육2투조합,남구발육중—상고생계1투조합.평면상고유장여유기현시분포수고륭기공제,유기성장경력료가리동—해서기생유、인지기렬해성기、연산—희마랍아기조정여개조3기이상사건.현금보존적해상유기장구유명현적잔류특정.종합분석인위,남방해상보편존재감탐정도저、기술상불성숙、유기성장규률인식국한등방면적풍험,기중상규유기감탐풍험상대교고,해륙첩합분지감탐풍험상대교저,비상규혈암기감탐풍험최저,병유차대남방해상진행료평개여유리구대우선.
Multiple cycles of hydrocarbon generation, reserve and cap assemblages with sea at the bottom and continent at the top developed in South China. There were mainly 2 sets of marine accumulation assemblages in-cluding Sinian-the Lower Paleozoic and the Middle-Upper Paleozoic. On plane map, the study area was divided into 2 accumulation zones (the southern one and the northern one) by the Jiangshao-Shiwandashan Fault. In the northern accumulation zone, 2 sets of accumulation assemblages developed, while in the southern accumulation zone, only the Middle-Upper Paleozoic assemblage existed. The distribution of ancient reservoirs and oil-and-gas shows was controlled by ancient uplifts. Petroleum accumulation experienced over 3 stages of tectonic events, for example, oil generating in Caledonian-Hercynian stages, oil cracking to gas in Indosinian stage, and adjusting and deforming in Yanshanian- Himalayan stages. The present marine reservoirs in South China have distinctive residual features. Their exploration degrees are low, techniques are not mature, and the knowledge about accu-mulation rules is restricted. The risks are higher for normal petroleum explorations, lower for marine superim-posed basin explorations, and the lowest for unconventional shale gas explorations. The marine strata in South China were evaluated and the favorable zones for exploration were pointed out.