石油实验地质
石油實驗地質
석유실험지질
EXPERIMENTAL PETROLEUM GEOLOGY
2013年
4期
364-371
,共8页
莫午零%林潼%张英%易士威%王东良%张亮
莫午零%林潼%張英%易士威%王東良%張亮
막오령%림동%장영%역사위%왕동량%장량
油气来源%包裹体%构造演化%成藏模式%柯东-柯克亚构造带%西昆仑山前
油氣來源%包裹體%構造縯化%成藏模式%柯東-柯剋亞構造帶%西昆崙山前
유기래원%포과체%구조연화%성장모식%가동-가극아구조대%서곤륜산전
hydrocarbon origin%inclusion%tectonic evolution%accumulation model%Kedong-Kekeya tectonic belt%piedmont of West Kunlun Mountain
西昆仑山前主要发育下石炭统和什拉甫组、下二叠统普司格组和中侏罗统杨叶组3套烃源岩。通过西昆仑山前柯东—柯克亚构造带烃源岩特征、油气特征和油—源对比与气—源对比分析，指出柯东—柯克亚构造带原油主要来自二叠系类型较好的Ⅱ型有机质，热演化程度较高；天然气主要来源于二叠系源岩，有部分侏罗系和石炭系天然气混入。从柯东1井和柯克亚含油气构造的构造演化、流体包裹体、油气成藏演化史出发，分析了成藏演化过程，总结出柯东—柯克亚构造带油气成藏演化模式，得出其成藏可分为4个阶段：原油初始充注时期、主充油时期、主充气时期和油气调整时期。搞清柯东—柯克亚构造带油气来源及油气成藏过程具有极其重要的意义，可为该区甩开勘探、进一步扩大勘探成果提供重要依据。
西昆崙山前主要髮育下石炭統和什拉甫組、下二疊統普司格組和中侏囉統楊葉組3套烴源巖。通過西昆崙山前柯東—柯剋亞構造帶烴源巖特徵、油氣特徵和油—源對比與氣—源對比分析，指齣柯東—柯剋亞構造帶原油主要來自二疊繫類型較好的Ⅱ型有機質，熱縯化程度較高；天然氣主要來源于二疊繫源巖，有部分侏囉繫和石炭繫天然氣混入。從柯東1井和柯剋亞含油氣構造的構造縯化、流體包裹體、油氣成藏縯化史齣髮，分析瞭成藏縯化過程，總結齣柯東—柯剋亞構造帶油氣成藏縯化模式，得齣其成藏可分為4箇階段：原油初始充註時期、主充油時期、主充氣時期和油氣調整時期。搞清柯東—柯剋亞構造帶油氣來源及油氣成藏過程具有極其重要的意義，可為該區甩開勘探、進一步擴大勘探成果提供重要依據。
서곤륜산전주요발육하석탄통화십랍보조、하이첩통보사격조화중주라통양협조3투경원암。통과서곤륜산전가동—가극아구조대경원암특정、유기특정화유—원대비여기—원대비분석，지출가동—가극아구조대원유주요래자이첩계류형교호적Ⅱ형유궤질，열연화정도교고；천연기주요래원우이첩계원암，유부분주라계화석탄계천연기혼입。종가동1정화가극아함유기구조적구조연화、류체포과체、유기성장연화사출발，분석료성장연화과정，총결출가동—가극아구조대유기성장연화모식，득출기성장가분위4개계단：원유초시충주시기、주충유시기、주충기시기화유기조정시기。고청가동—가극아구조대유기래원급유기성장과정구유겁기중요적의의，가위해구솔개감탐、진일보확대감탐성과제공중요의거。
In the foreland of Western Kunlun Mountain, 3 sets of hydrocarbon source rock developed, including the Heshilafu Formation in the Lower Carboniferous, the Pusige Formation in the Lower Permian and the Yangye Formation in the Middle Jurassic. Analysis of source rock distribution, hydrocarbon property, oil-source and gas-source correlation in the Kedong-Kekeya tectonic belt in the foreland of Western Kunlun Mountain led to the fo-llowing 2 conclusions:a) Oil in the Kedong-Kekeya tectonic belt mainly originated from relatively highly-mature organic matter of typeⅡin Permian. b) Natural gas mainly came from Permian, and partially from Jurassic and Carboniferous. Based on the study of tectonic evolution, fluid inclusions and hydrocarbon accumulation evolution history of the well Kedong 1 and the Kedong-Kekeya tectonic belt, the author analyzed the accumulation process of hydrocarbon and summarized the accumulation model of hydrocarbon in the Kedong-Kekeya tectonic belt. Accumulation process of hydrocarbon in the Kedong-Kekeya tectonic belt can be divided into 4 periods which include initial charging period of oil, oil-charging window, gas-charging window and hydrocarbon-adjusting period. To figure out the source and accumulation process of hydrocarbon in the Kedong-Kekeya tectonic belt can provide important reference to expand exploration scope and find more petroleum resource in the study area.
