构造对塔中奥陶系礁滩型储集层的控制作用
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摘要
塔中Ⅰ号坡折带上奥陶统台缘带的构造与储集层地质综合分析表明,缺乏改造作用的奥陶系古老礁滩体只能形成低孔低渗储集层,构造作用控制了高产油气储集层的发育。良里塔格组台缘礁滩体沉积末期,东部构造抬升形成强烈的暴露岩溶作用,发育大型溶洞,造成东部储集层优于西部。断裂带是地震剖面上具有"串珠"响应的大型缝洞发育的主体部位,埋藏期溶蚀形成的缝洞体主要受控于断裂。裂缝对后期溶蚀作用及储集层渗透性具有建设性作用,也是油气高产的重要因素。塔中Ⅰ号坡折带构造的差异性造成礁滩体的分布、储集层的发育具有分段性:东部台缘带高陡狭长,风化壳岩溶与构造作用形成的缝洞储集层发育,有利于油气高产稳产;西部断裂欠发育区台缘带宽缓,以孔隙型储集层为主。
The analysis of structure and reservoir along Tazhong No.1 belt in the northern Tazhong uplift of Tarim basin shows that in the Ordovician reef and bank without reconstruction there only exists low-porosity and low-permeability reservoir,and the tectonic action controls the development of high-productivity reservoirs.In the end of the reef and bank deposition of the Lianglitage formation in Tazhong No.1 zone,intensive exposed karstification with large caverns was formed due to the uplift of the eastern structure,the reservoir quality in the eastern area is better than that in the western one.The faulted belts are the main locations where large fractures and caverns with anomaly "beaded" seismic response developed.The fracture-cavern bodies formed by dissolution in multistage burials are mainly controlled by the faults.So,the fractures have constructive effects on post dissolution and reservoir permeability,also,it is significant factor for high oil-gas production.The structural differentiation in Tazhong No.1 zone allows the distribution of reef and bank body and the development of reservoirs to be of subsection property.The eastern platform margin is in high,steep,long and narrow location,in which the fracture-cavern reservoirs well developed due to weathering crust karstification and structural action,being favorable for high and stable petroleum production.The western area with underdeveloped faults has broad but ramp platform margin dominated by low porous reservoirs.
The analysis of structure and reservoir along Tazhong No.1 belt in the northern Tazhong uplift of Tarim basin shows that in the Ordovician reef and bank without reconstruction there only exists low-porosity and low-permeability reservoir,and the tectonic action controls the development of high-productivity reservoirs.In the end of the reef and bank deposition of the Lianglitage formation in Tazhong No.1 zone,intensive exposed karstification with large caverns was formed due to the uplift of the eastern structure,the reservoir quality in the eastern area is better than that in the western one.The faulted belts are the main locations where large fractures and caverns with anomaly "beaded" seismic response developed.The fracture-cavern bodies formed by dissolution in multistage burials are mainly controlled by the faults.So,the fractures have constructive effects on post dissolution and reservoir permeability,also,it is significant factor for high oil-gas production.The structural differentiation in Tazhong No.1 zone allows the distribution of reef and bank body and the development of reservoirs to be of subsection property.The eastern platform margin is in high,steep,long and narrow location,in which the fracture-cavern reservoirs well developed due to weathering crust karstification and structural action,being favorable for high and stable petroleum production.The western area with underdeveloped faults has broad but ramp platform margin dominated by low porous reservoirs.
引文
[1]周新源,王招明,杨海军,等.塔中奥陶系大型凝析气田的勘探和发现[J].海相油气地质,2006,11(1):45-51.
[2]代宗仰,周翼,陈景山,等.塔中中上奥陶统礁滩相储集层的特征及其评价[J].西南石油学院学报,2001,23(4):1-4.
[3]王振宇,李宇平,陈景山,等.塔中地区中-晚奥陶世碳酸盐陆棚边缘大气成岩透镜体的发育特征[J].地质科学,2002,(S1):152-160.
[4]黎平,陈景山,王振宇,等.塔中地区奥陶系碳酸盐岩储层形成控制因素及储层类型研究[J].天然气勘探与开发,2003,26(1):37-42.
[5]沈安江,王招明,杨海军,等.塔里木盆地塔中地区奥陶系碳酸盐岩储层成因类型、特征及油气勘探潜力[J].海相油气地质,2006,11(4):1-12.
[6]李凌,谭秀成,陈景山,等.塔中西部上奥陶统良里塔格组同生喀斯特储集层成因分析[J].成都理工大学学报,2009,36(1):8-12.
[7]王嗣敏,吕修祥.塔中地区奥陶系碳酸盐岩储层特征及其油气意义[J].西安石油大学学报,2004,19(4):72-76.
[8]赵宗举,王招明,吴兴宁,等.塔里木盆地塔中地区奥陶系储层成因类型及分布预测[J].石油实验地质,2007,29(1):40-46.
[9]王招明,赵宽志,邬光辉,等.塔中Ⅰ号坡折带上奥陶统礁滩型储集层发育特征及其主控因素[J].石油与天然气地质,2007,28(6):797-801.
[10]罗春树,杨海军,蔡振忠,等.塔中82井区优质储集层的控制因素[J].新疆石油地质,2007,28(5):589-591.
[11]邬光辉,李启明,张宝收,等.塔中Ⅰ号断裂坡折带构造特征及勘探领域[J].石油学报,2005,26(1):27-30.
[12]李宇平,李新生,周翼,等.塔中地区中上奥陶统沉积特征及沉积演化史[J].新疆石油地质,2000,21(3):204-207.
[13]顾家裕,方辉,蒋凌志.塔里木盆地奥陶纪生物礁的发现及其意义[J].石油勘探与开发,2001,28(4):1-4.
[14]顾家裕,张兴阳,罗平.塔里木盆地奥陶系台地边缘生物礁、滩发育特征[J].石油与天然气地质,2005,26(3):277-283.
[2]代宗仰,周翼,陈景山,等.塔中中上奥陶统礁滩相储集层的特征及其评价[J].西南石油学院学报,2001,23(4):1-4.
[3]王振宇,李宇平,陈景山,等.塔中地区中-晚奥陶世碳酸盐陆棚边缘大气成岩透镜体的发育特征[J].地质科学,2002,(S1):152-160.
[4]黎平,陈景山,王振宇,等.塔中地区奥陶系碳酸盐岩储层形成控制因素及储层类型研究[J].天然气勘探与开发,2003,26(1):37-42.
[5]沈安江,王招明,杨海军,等.塔里木盆地塔中地区奥陶系碳酸盐岩储层成因类型、特征及油气勘探潜力[J].海相油气地质,2006,11(4):1-12.
[6]李凌,谭秀成,陈景山,等.塔中西部上奥陶统良里塔格组同生喀斯特储集层成因分析[J].成都理工大学学报,2009,36(1):8-12.
[7]王嗣敏,吕修祥.塔中地区奥陶系碳酸盐岩储层特征及其油气意义[J].西安石油大学学报,2004,19(4):72-76.
[8]赵宗举,王招明,吴兴宁,等.塔里木盆地塔中地区奥陶系储层成因类型及分布预测[J].石油实验地质,2007,29(1):40-46.
[9]王招明,赵宽志,邬光辉,等.塔中Ⅰ号坡折带上奥陶统礁滩型储集层发育特征及其主控因素[J].石油与天然气地质,2007,28(6):797-801.
[10]罗春树,杨海军,蔡振忠,等.塔中82井区优质储集层的控制因素[J].新疆石油地质,2007,28(5):589-591.
[11]邬光辉,李启明,张宝收,等.塔中Ⅰ号断裂坡折带构造特征及勘探领域[J].石油学报,2005,26(1):27-30.
[12]李宇平,李新生,周翼,等.塔中地区中上奥陶统沉积特征及沉积演化史[J].新疆石油地质,2000,21(3):204-207.
[13]顾家裕,方辉,蒋凌志.塔里木盆地奥陶纪生物礁的发现及其意义[J].石油勘探与开发,2001,28(4):1-4.
[14]顾家裕,张兴阳,罗平.塔里木盆地奥陶系台地边缘生物礁、滩发育特征[J].石油与天然气地质,2005,26(3):277-283.
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