成都理工大学学报（自然科学版）
成都理工大學學報（自然科學版）
성도리공대학학보（자연과학판）
JOURNAL OF CHENGDU UNIVERSITY OF TECHNOLOGY(SCIENCE & TECHNOLOGY EDITION)
2014年
6期
743-751
,共9页
何曼如%陈飞%徐国盛%袁海锋
何曼如%陳飛%徐國盛%袁海鋒
하만여%진비%서국성%원해봉
天然气富集规律%须家河组%气藏%有利区预测%四川盆地
天然氣富集規律%鬚傢河組%氣藏%有利區預測%四川盆地
천연기부집규률%수가하조%기장%유리구예측%사천분지
natural gas%accumulation pattern%Xuj iahe Formation%gas reservoir%favorable area%prediction%Sichuan Basin
重点探讨了四川盆地上三叠统须家河组致密砂岩气藏的成藏模式、成藏主控因素及天然气富集规律，旨在预测天然气聚集有利区域。致密砂岩气藏具有埋藏深、物性差、产量低的特点，但勘探潜力巨大。四川盆地须家河组勘探和发现的天然气主要集中于川中、川西、川北的须二、须四、须六段，气藏总体表现出充满度不高、低部位含水饱和度偏高、储量动用比例偏低、储集层含气范围有限的特点。通过须家河组烃源岩和轻烃的对比，以及对须家河组成藏组合的研究，表明须家河组天然气藏具有多元供烃、近源聚集、岩性控藏、油气转化、晚期调整的成藏模式。须家河组天然气藏的富集主控因素，一是三叠系烃源灶分布控制了天然气来源及充注程度；二是构造作用强度控制圈闭的发育与分布区域；三是有利沉积相带和成岩相带控制天然气聚集的场所与规模。天然气主要富集在构造隆升低缓区、断裂活动适中区、储层相对发育区。
重點探討瞭四川盆地上三疊統鬚傢河組緻密砂巖氣藏的成藏模式、成藏主控因素及天然氣富集規律，旨在預測天然氣聚集有利區域。緻密砂巖氣藏具有埋藏深、物性差、產量低的特點，但勘探潛力巨大。四川盆地鬚傢河組勘探和髮現的天然氣主要集中于川中、川西、川北的鬚二、鬚四、鬚六段，氣藏總體錶現齣充滿度不高、低部位含水飽和度偏高、儲量動用比例偏低、儲集層含氣範圍有限的特點。通過鬚傢河組烴源巖和輕烴的對比，以及對鬚傢河組成藏組閤的研究，錶明鬚傢河組天然氣藏具有多元供烴、近源聚集、巖性控藏、油氣轉化、晚期調整的成藏模式。鬚傢河組天然氣藏的富集主控因素，一是三疊繫烴源竈分佈控製瞭天然氣來源及充註程度；二是構造作用彊度控製圈閉的髮育與分佈區域；三是有利沉積相帶和成巖相帶控製天然氣聚集的場所與規模。天然氣主要富集在構造隆升低緩區、斷裂活動適中區、儲層相對髮育區。
중점탐토료사천분지상삼첩통수가하조치밀사암기장적성장모식、성장주공인소급천연기부집규률，지재예측천연기취집유리구역。치밀사암기장구유매장심、물성차、산량저적특점，단감탐잠력거대。사천분지수가하조감탐화발현적천연기주요집중우천중、천서、천북적수이、수사、수륙단，기장총체표현출충만도불고、저부위함수포화도편고、저량동용비례편저、저집층함기범위유한적특점。통과수가하조경원암화경경적대비，이급대수가하조성장조합적연구，표명수가하조천연기장구유다원공경、근원취집、암성공장、유기전화、만기조정적성장모식。수가하조천연기장적부집주공인소，일시삼첩계경원조분포공제료천연기래원급충주정도；이시구조작용강도공제권폐적발육여분포구역；삼시유리침적상대화성암상대공제천연기취집적장소여규모。천연기주요부집재구조륭승저완구、단렬활동괄중구、저층상대발육구。
The paper discusses the tight sandstone gas reservoir accumulation mode, the main controlling factors and the gas accumulation pattern in the Upper Triassic Xujiahe Formation (T3x)of Sichuan basin,aiming to predict the natural gas gathering areas and pointing out the next step prospecting direction.Tight gas reservoirs are characterized by deep burial depth,poor reservoir property and low production rate,but have large exploration potentials.The natural gas explored and discovered from the Xujiahe Formation in Sichuan Basin mainly concentrates in Member 2,4 and 6 of Xujiahe Formation.The gas reservoirs are characterized by low degree of fullness,high water saturation in lower positions,low level of produced reserves,and limited gas-bearing range of the reservoirs.The comparison of the Xujiahe Formation source rocks and the natural gas light hydrocarbon and the research of the natural gas accumulation combination indicate that the hydrocarbon accumulation pattern is characterized by multiple hydrocarbon supplies,accumulation near the source,lithology reservoirs,oil-gas conversion and later adjustment.The main controlling factors of the natural gas enrichment in Xujiahe Formation are that the Triassic hydrocarbon sources distribution controls the source and the adequacy of natural gas,the structural strength controls the development and distribution area of the traps, and the favorable sedimentary facies belt and diagenetic facies belt control the gathering place and scale of natural gas. Natural gas mainly assembles in the tectonic uplift lower area,the moderate faulting area and the developmental reservoir area.
