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| 塔中地区奥陶系碳酸盐岩储层裂缝发育特征及主控因素 | |
| 引用本文： | 赵明,樊太亮,于炳松,王增香.塔中地区奥陶系碳酸盐岩储层裂缝发育特征及主控因素[J].现代地质,2009,23(4). |
| 作者姓名： | 赵明 樊太亮 于炳松 王增香 |
| 作者单位： | 1. 中国地质大学,资源学院,湖北,武汉,430074;中国石油化工股份有限公司,西北油田分公司,新疆,乌鲁木齐,830011 2. 中国地质大学,教育部海相储层演化与油气富集机理重点实验室,北京,100083 3. 中国地质大学,地球科学与资源学院,北京,100083 4. 科麦奇,中国,石油有限公司,北京,100086 |
| 基金项目： | 国家重点基础研究发展计划"973"项目，中国石油科技创新基金研究项目，中国石化西部新区勘探指挥部项目 |
| 摘 要： | 主要依据塔中地区40多口钻井的奥陶系岩心裂缝观察、深浅侧向测井和FM I成像测井的响应特征等综合识别裂缝和获得裂缝特征参数。研究认为塔中地区奥陶系碳酸盐岩储层构造裂缝大量发育,以高角度缝和微裂隙最为发育,大、中缝较少,有近一半裂缝为未被充填的有效缝;平面上沿断裂带由西向东裂缝线密度变大,有效性增强;纵向上发育上奥陶统裂缝段、中—下奥陶统顶部100 m内裂缝段和深部裂缝段,中—下奥陶统顶部100 m内为裂缝集中发育段;裂缝发育程度与断裂构造和岩性关系密切,在断层发育密集区或多组断裂交汇处裂缝最发育,距离主断层或次级断层越近裂缝越发育,白云岩裂缝发育程度好于灰岩;好的裂缝发育区位于塔中地区东部多组断裂带交汇的部位。 |
| 关 键 词： | 塔中地区 奥陶系 碳酸盐岩储层 裂缝特征 主控因素 |
Ordovician Carbonate Reservoir Fracture Characteristics in Tazhong Area of Tarim Basin |
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| ZHAO Ming,FAN Tai-liang,YU Bing-song,WANG Zeng-xiang.Ordovician Carbonate Reservoir Fracture Characteristics in Tazhong Area of Tarim Basin[J].Geoscience——Journal of Graduate School,China University of Geosciences,2009,23(4). | |
| Authors: | ZHAO Ming FAN Tai-liang YU Bing-song WANG Zeng-xiang |
| Abstract: | Comprehensive identification of fractures and obtaining the fracture characteristics parameters are mainly based on the observation of the fracture in cores,the interpretation of deep and shallow laterologs and FMI logging and so on from more than 40 wells in Tazhong area of Tarim Basin.The study indicated that structural fractures in Ordovician carbonate reservoir are well developed in Tazhong area,and the high angle fractures and micro-fractures are well developed,and large-middle fractures are poorly developed,and nearly half of fractures are unfilled effective fractures.The densities of fracture lines along fault zone on the plane become big and increase the validity from west to east.There are three vertical fracture zones,including Upper Ordovician fracture zone,the roof within 100 meters of Lower-Middle Ordovician fracture zone,the deeper of Lower-Middle Ordovician fracture zone.The roof within 100 meters of Lower-Middle Ordovician fracture zone is moderately developed zone.The development of fracture is closely related to fault structure and lithology.In the section of fault and the interchange of multiple fractures,the fractures are well developed.The closer distance is from major faults or sub-grade faults,the more fractures develop,and fractures develop more in dolostone than in limestone.The region where fractures develop well is located in the multigroup faults crossing zone in the eastern of Tazhong area. |
| Keywords: | Tazhong area Ordovician carbonate reservoir fracture characteristic controlling factor |
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