塔里木盆地塔中地区主要构造圈闭形成期分布及成藏意义
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摘要
通过对塔中地区钻遇奥陶系的60余口井过井地震剖面的精细解释及地震反射截切—上超关系、沉积厚度变化分析,识别出最初形成于晚奥陶世—泥盆纪、石炭纪—早二叠世、早二叠世晚期及中、新生代的四期奥陶系内幕构造圈闭,以及最初形成于石炭纪—早二叠世、早二叠世晚期、晚二叠世、中—晚三叠世及早第三纪末以来的五期石炭系内幕构造圈闭;发现了塔中地区主要构造圈闭的首次形成期呈现由南向北逐渐变晚的总体趋势。构造圈闭形成与成藏配套综合分析表明,该区现今工业性油藏的主要成藏期为二叠纪—早三叠世,而中—晚三叠世及其以后所形成的构造圈闭不利于油藏的形成。认为塔中地区的主力烃源应该来自近邻的满加尔凹陷中—上奥陶统相当于黑土凹组—萨尔干组的层段。
Through fine interpretation and analysis with seismic truncation-onlap and sedimentary thickness change to the seismic sections passing through more than 60 drilled wells in Tazhong area in Tarim basin, the authors has identified 4 stages of internal Ordovician structural traps, which initially formed respectively during Late Ordovician-Devonian, Carboniferous-Early Permian, late Early Permian and Mesozoic-Cenozoic time, and 5 stages of internal Carboniferous traps, which initially formed respectively during Carboniferous-Early Permian, late Early Permian, Late Permian, Middle-Late Triassic and later than Paleogene time. It is found that the initially-forming stages of main structural traps in Tazhong distributed as a gradual later (younger) trend generally from south to north. By comprehensive analysis of coupling trap formation with hydrocarbon accumulation, it is indicated that dominant stage of commercial hydrocarbon accumulation should be during Permian to Early Triassic time, but the structural traps formed later than Early Triassic time are unfavorable for hydrocarbon accumulation. It is suggested that the hydrocarbon in Tazhong area should derive significantly from the neighboring strata corresponding to Heituwa Fm. or Middle-Upper Ordovician Shargan Fm. in Manjiar Sag.
Through fine interpretation and analysis with seismic truncation-onlap and sedimentary thickness change to the seismic sections passing through more than 60 drilled wells in Tazhong area in Tarim basin, the authors has identified 4 stages of internal Ordovician structural traps, which initially formed respectively during Late Ordovician-Devonian, Carboniferous-Early Permian, late Early Permian and Mesozoic-Cenozoic time, and 5 stages of internal Carboniferous traps, which initially formed respectively during Carboniferous-Early Permian, late Early Permian, Late Permian, Middle-Late Triassic and later than Paleogene time. It is found that the initially-forming stages of main structural traps in Tazhong distributed as a gradual later (younger) trend generally from south to north. By comprehensive analysis of coupling trap formation with hydrocarbon accumulation, it is indicated that dominant stage of commercial hydrocarbon accumulation should be during Permian to Early Triassic time, but the structural traps formed later than Early Triassic time are unfavorable for hydrocarbon accumulation. It is suggested that the hydrocarbon in Tazhong area should derive significantly from the neighboring strata corresponding to Heituwa Fm. or Middle-Upper Ordovician Shargan Fm. in Manjiar Sag.
引文
①张水昌,张宝民,赵孟军等.塔里木盆地油气源及成藏研究.“九五”国家重点科技攻关项目(99-111-01-03)专题成果报告,2000
②梁狄刚,张水昌,王飞宇等.塔里木盆地生油岩与油源研究.“九五”国家重点科技攻关项目成果报告,1998
③张光亚,杨文静,王红军等.塔里木盆地台盆区油气藏主控因素及油气分布规律.“九五”国家重点科技攻关项目(99-111-01-04-02)专题成果报告,2000
④梁狄刚,张水昌,王飞宇等.塔里木台盆区寒武系、中上奥陶统早期和晚期成藏的勘探潜力.塔里木油田分公司,中国石油勘探开发研究院油气地球化学重点实验室,2002
1贾承造.中国塔里木盆地构造特征与油气.北京:石油工业出版社,1997
2王子煜,陆克政,漆家福等.塔里木盆地塔中凸起的构造演化及其与油气藏的关系.石油大学学报(自然科学版),1998,22(4):14～17
3张振生,李明杰,刘社平.塔中低凸起的形成和演化.石油勘探与开发,2002,29(1):28～31
4何登发,贾承造,李德生等.塔里木多旋回叠合盆地的形成与演化.石油与天然气地质,2005,26(1):64～77
5杨春林,吴奇之,金学正等.塔里木盆地构造圈闭类型、成因与分布.见:童晓光,梁狄刚,贾承造主编.塔里木盆地石油地质研究新进展,北京:科学出版社,1996,159～168
6李宇平,王振宇,李文华等.塔中Ⅰ号断裂构造带奥陶系碳酸盐岩圈闭类型及其勘探意义.地质科学,2002,37(增刊):141～151
7姚建军.塔里木盆地圈闭特征.新疆石油地质,1995,16(4):290～295
8陈子元.塔里木盆地圈闭形成的主控因素及展布特征.新疆石油地质,2001,22(3):185～188
9赵靖舟.油气水界面追溯法与塔里木盆地海相油气成藏期分析.石油勘探与开发,2001,28(4):53～56
10王飞宇,张水昌,梁狄刚.塔中4油田油气水界面的变迁与成藏期.新疆石油地质,2004,25(5):560～562
11赵靖舟.塔里木盆地烃类流体包裹体与成藏年代分析.石油勘探与开发,2002,29(4):21～25
12赵靖舟,庞雯,吴少波等.塔里木盆地海相油气成藏年代与成藏特征.地质科学,2002,37(增刊):81～90
13李延钧.塔中地区油气源及成藏时期研究.石油勘探与开发,1998,25(1):11～14
14孙玉善,赵孟军,杨帆.由沥青产状及地球化学特征分析碳酸盐岩油藏的成藏期次——以塔中16井区为例.新疆石油地质,1999,20(5):394～396
15侯读杰,张敏,陈奇等.塔中地区CⅢ油组油气运移及成藏史初探.江汉石油学院学报,2001,23(4):15～18
16杨威,杨栓荣,李新生等.流体包裹体在塔中40油田成藏期次研究中的应用.新疆石油地质,2002,23(4):338～339
17张有瑜,Wingmann H Z,Todd A等.塔里木盆地典型砂岩油气储层自生伊利石K-Ar同位素测年研究与成藏年代探讨.地学前缘,2004,11(4):637～647
18陈汉林,杨树锋,董传万等.塔里木盆地早二叠世岩浆作用的特征及形成的地球动力学过程.见:陈海泓等主编.中国碰撞造山带研究.北京:海洋出版社,1999:174～182
19魏国齐,贾承造,施央申等.塔里木新生代复合再生前陆盆地构造特征与油气.地质学报,2000,74(2):123～133
20赵宗举,周新源,郑兴平等.塔里木盆地主力烃源岩的诸多证据.石油学报,2005,26(3):10～15
21张水昌,王飞宇,张保民,等.塔里木盆地中上奥陶统油源层地球化学研究.石油学报,2000,21(6):23～28
②梁狄刚,张水昌,王飞宇等.塔里木盆地生油岩与油源研究.“九五”国家重点科技攻关项目成果报告,1998
③张光亚,杨文静,王红军等.塔里木盆地台盆区油气藏主控因素及油气分布规律.“九五”国家重点科技攻关项目(99-111-01-04-02)专题成果报告,2000
④梁狄刚,张水昌,王飞宇等.塔里木台盆区寒武系、中上奥陶统早期和晚期成藏的勘探潜力.塔里木油田分公司,中国石油勘探开发研究院油气地球化学重点实验室,2002
1贾承造.中国塔里木盆地构造特征与油气.北京:石油工业出版社,1997
2王子煜,陆克政,漆家福等.塔里木盆地塔中凸起的构造演化及其与油气藏的关系.石油大学学报(自然科学版),1998,22(4):14～17
3张振生,李明杰,刘社平.塔中低凸起的形成和演化.石油勘探与开发,2002,29(1):28～31
4何登发,贾承造,李德生等.塔里木多旋回叠合盆地的形成与演化.石油与天然气地质,2005,26(1):64～77
5杨春林,吴奇之,金学正等.塔里木盆地构造圈闭类型、成因与分布.见:童晓光,梁狄刚,贾承造主编.塔里木盆地石油地质研究新进展,北京:科学出版社,1996,159～168
6李宇平,王振宇,李文华等.塔中Ⅰ号断裂构造带奥陶系碳酸盐岩圈闭类型及其勘探意义.地质科学,2002,37(增刊):141～151
7姚建军.塔里木盆地圈闭特征.新疆石油地质,1995,16(4):290～295
8陈子元.塔里木盆地圈闭形成的主控因素及展布特征.新疆石油地质,2001,22(3):185～188
9赵靖舟.油气水界面追溯法与塔里木盆地海相油气成藏期分析.石油勘探与开发,2001,28(4):53～56
10王飞宇,张水昌,梁狄刚.塔中4油田油气水界面的变迁与成藏期.新疆石油地质,2004,25(5):560～562
11赵靖舟.塔里木盆地烃类流体包裹体与成藏年代分析.石油勘探与开发,2002,29(4):21～25
12赵靖舟,庞雯,吴少波等.塔里木盆地海相油气成藏年代与成藏特征.地质科学,2002,37(增刊):81～90
13李延钧.塔中地区油气源及成藏时期研究.石油勘探与开发,1998,25(1):11～14
14孙玉善,赵孟军,杨帆.由沥青产状及地球化学特征分析碳酸盐岩油藏的成藏期次——以塔中16井区为例.新疆石油地质,1999,20(5):394～396
15侯读杰,张敏,陈奇等.塔中地区CⅢ油组油气运移及成藏史初探.江汉石油学院学报,2001,23(4):15～18
16杨威,杨栓荣,李新生等.流体包裹体在塔中40油田成藏期次研究中的应用.新疆石油地质,2002,23(4):338～339
17张有瑜,Wingmann H Z,Todd A等.塔里木盆地典型砂岩油气储层自生伊利石K-Ar同位素测年研究与成藏年代探讨.地学前缘,2004,11(4):637～647
18陈汉林,杨树锋,董传万等.塔里木盆地早二叠世岩浆作用的特征及形成的地球动力学过程.见:陈海泓等主编.中国碰撞造山带研究.北京:海洋出版社,1999:174～182
19魏国齐,贾承造,施央申等.塔里木新生代复合再生前陆盆地构造特征与油气.地质学报,2000,74(2):123～133
20赵宗举,周新源,郑兴平等.塔里木盆地主力烃源岩的诸多证据.石油学报,2005,26(3):10～15
21张水昌,王飞宇,张保民,等.塔里木盆地中上奥陶统油源层地球化学研究.石油学报,2000,21(6):23～28
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