天然气工业
天然氣工業
천연기공업
NATURAL GASINDUSTRY
2010年
1期
11-14
,共4页
魏国齐%杨威%金惠%谢增业%施振生%谢武仁%朱秋影%刘满仓%李德江%沈珏红
魏國齊%楊威%金惠%謝增業%施振生%謝武仁%硃鞦影%劉滿倉%李德江%瀋玨紅
위국제%양위%금혜%사증업%시진생%사무인%주추영%류만창%리덕강%침각홍
四川盆地%晚三叠世%砂体展布%层序%储集层特征%成藏条件%生储盖组合%勘探潜力
四川盆地%晚三疊世%砂體展佈%層序%儲集層特徵%成藏條件%生儲蓋組閤%勘探潛力
사천분지%만삼첩세%사체전포%층서%저집층특정%성장조건%생저개조합%감탐잠력
Sichuan Basin%Late Triassic%sandbody distribution%sequence%reservoir characteristics%hydrocarbon pooling conditions%source rock-reservoir-cap rock combination%exploration potential%Xujiahe Formation%exploration target%burial depth%lowstand system tract
四川盆地上三叠统须家河组是中国石油西南油气田公司的重点勘探接替层系,随着勘探形势的变化,需要以全盆地为单元,弄清各储集砂体的平面展布规律及其勘探潜力.综合分析地震、测井、录井和野外露头资料,将须家河组划分为4个三级层序、12个体系域;以体系域为单元编制了全盆地须家河组沉积微相展布图,指出须家河组形成了6大三角洲砂体,有利储集砂体主要分布于低位体系域,主要为三角洲前缘水下分支河道砂体;而水进和高位体系域湖泊相沉积发育,砂体规模较小.综合考虑各砂体的分布面积、生烃强度、资源潜力、储层类别、勘探现状及顶面埋深等条件,对须家河组进行了勘探潜力综合评价,指出了下一步的勘探方向:①须二段应集中在广安-营山和蓬莱-金华2个砂体上;②须四段应集中在蓬莱-金华、安岳-合川2个砂体上;③须六段则应集中在勘探程度相对较低的蓬莱-金华、宜宾-观音场和古蔺-泸州砂体上.
四川盆地上三疊統鬚傢河組是中國石油西南油氣田公司的重點勘探接替層繫,隨著勘探形勢的變化,需要以全盆地為單元,弄清各儲集砂體的平麵展佈規律及其勘探潛力.綜閤分析地震、測井、錄井和野外露頭資料,將鬚傢河組劃分為4箇三級層序、12箇體繫域;以體繫域為單元編製瞭全盆地鬚傢河組沉積微相展佈圖,指齣鬚傢河組形成瞭6大三角洲砂體,有利儲集砂體主要分佈于低位體繫域,主要為三角洲前緣水下分支河道砂體;而水進和高位體繫域湖泊相沉積髮育,砂體規模較小.綜閤攷慮各砂體的分佈麵積、生烴彊度、資源潛力、儲層類彆、勘探現狀及頂麵埋深等條件,對鬚傢河組進行瞭勘探潛力綜閤評價,指齣瞭下一步的勘探方嚮:①鬚二段應集中在廣安-營山和蓬萊-金華2箇砂體上;②鬚四段應集中在蓬萊-金華、安嶽-閤川2箇砂體上;③鬚六段則應集中在勘探程度相對較低的蓬萊-金華、宜賓-觀音場和古藺-瀘州砂體上.
사천분지상삼첩통수가하조시중국석유서남유기전공사적중점감탐접체층계,수착감탐형세적변화,수요이전분지위단원,롱청각저집사체적평면전포규률급기감탐잠력.종합분석지진、측정、록정화야외로두자료,장수가하조화분위4개삼급층서、12개체계역;이체계역위단원편제료전분지수가하조침적미상전포도,지출수가하조형성료6대삼각주사체,유리저집사체주요분포우저위체계역,주요위삼각주전연수하분지하도사체;이수진화고위체계역호박상침적발육,사체규모교소.종합고필각사체적분포면적、생경강도、자원잠력、저층유별、감탐현상급정면매심등조건,대수가하조진행료감탐잠력종합평개,지출료하일보적감탐방향:①수이단응집중재엄안-영산화봉래-금화2개사체상;②수사단응집중재봉래-금화、안악-합천2개사체상;③수륙단칙응집중재감탐정도상대교저적봉래-금화、의빈-관음장화고린-로주사체상.
The Upper Triassic Xujiahe Formation in the Sichuan Basin is critical to reserve replacement of PetroChina Southwest Oil and Gas Field Company. Along with the developing trend of hydrocarbon exploration, the areal distribution and exploration potential of each sandbody should be appraised with the whole basin as a unit. Based on an integrated analysis of seismic, log and outcrop data, the Xujiahe Formation is divided into 4 third-order sequences and 12 system tracts. The sedimentary microfacies of the Xujiahe Formation are mapped in the whole basin with the system tracts as units. Six major delta sandbodies are identified in the Xujiahe Formation. The favorable reservoir sandbodies are mainly developed in the lowstand system tract and are mostly delta-front underwater distributary channel sands. In contrast, the small sandbodies of lake facies are well developed in the transgressive and highstand system tracts. The exploration potential of the Xujiahe Formation is comprehensively appraised with multiple parameters including areal distribution, hydrocarbon generation intensity, resource potential, reservoir types, exploration maturity and top burial depth of reservoirs. Several exploration targets are recognized, such as the Guangan - Yingshan and Penglai - Jinhua sandbodies in the second member of the Xujiahe Formation, the Penglai - Jinhua and Anyue - Hechuan sandbodies in the fourth member of the Xujiahe Formation, as well as the Penglai - Jinhua, Yibin - Guanyinchang and Gulan - Luzhou sandbodies in the sixth member of the Xujiahe Formation.
