塔里木盆地肖塘南地区走滑断裂特征与断溶体勘探研究

李梁; 孙庭斌; 陈迎楠; 张怡; 王玉珊; 王硕; 赵婧; 王雅迪; 李栋

doi:10.19509/j.cnki.dzkq.2022.0148

塔里木盆地肖塘南地区走滑断裂特征与断溶体勘探研究

doi: 10.19509/j.cnki.dzkq.2022.0148

a.
中国石油集团东方地球物理勘探有限责任公司研究院地质研究中心，河北涿州 072750
b.
中国石油集团东方地球物理勘探有限责任公司装备服务处，河北涿州 072750

基金项目:

中国石油天然气集团有限公司项目“大功率时频电磁勘探系统现场试验” 2022ZS01

详细信息

作者简介:
李梁(1989—)，男，工程师，主要从事碳酸盐岩解释方法及地质综合研究工作。E-mail: 515926894@qq.com

中图分类号: P542.3
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出版历程
- 收稿日期: 2021-06-25

Characteristics of strike-slip faults and exploration of fault-dissolution body in Xiaotangnan area of Tarim Basin

a.
Geological Research Institute of GRI, BGP Inc., CNPC, Zhuozhou Hebei 072750, China
b.
Equipment Department, BGP Inc., CNPC, Zhuozhou Hebei 072750, China

摘要

摘要:
断裂在塔里木盆地奥陶系碳酸盐缝洞型油气藏勘探开发中具有重要作用，包括控储、控藏和控富，是油气地质分析的热点。由于肖塘南地区二维测线对断裂的解释及识别难度大，对断裂控储控藏的认识不清，制约了该区奥陶系油气勘探。为此，基于肖塘南地区新三维地震资料，在分析区域地质概况的基础上，系统分析了走滑断裂的构造、演化特征，明确了走滑断裂对油气藏的控制作用，进而提出了目标优选思路。研究表明，平面上肖塘南地区发育3条NE向走滑断裂带，具有线状、马尾状、半花状组合样式；纵向上发育深层、浅层2套断裂系统，深层走滑断裂形成于加里东早—中期，表现为陡直或花状样式，浅层断裂形成于加里东晚期—海西期，表现为负花状构造走滑断裂。研究区内顺南4断裂带具有明显的分区特征，由南向北表现为线性断裂区——马尾状断裂区。在马尾状断裂区内，地层破碎严重，有利于岩溶作用，断溶体油气藏更为发育，是风险勘探优先选择的区域。研究认识对该区奥陶系断溶体油气藏勘探具有一定的指导意义。
- 走滑断裂 /
- 断溶体 /
- 油气藏 /
- 塔里木盆地
Abstract:
Faults play an important role in the exploration and development of Ordovician carbonate fracture-cavity hydrocarbon reservoirs in Tarim Basin, including controlling reservoirs development and hydrocarbon accumulation.The structure and evolution characteristics of strike-slip faults are analyzed based on the new 3D seismic data in Xiaotangnan area. The results show that there are three NE strike-slip faultsand they have linear, horse-tailed, braided and half-flowered combinations in the Xiaotangnan area.Two sets of deep and shallow fault systems were developed longitudinally. The deep strike-slip faults were formed in the Early to Middle Caledonian, showing steep or flower-shaped pattern, while the shallow faults were formed in the Late Caledonian to Hercynian, showing negative flower-shaped strike-slip faults. The Shunnan 4 extension fault zone in the study area has obvious zoning characteristics, which shows a linear fault zone, horsetail fault zone from south to north.In the cavern fault area, the strata are seriously broken, which is conducive to karstic process, and the fault solution reservoir is more developed, so it is the preferred area for risk exploration.This study has certain guiding significance for the exploration of Ordovician fault-solution reservoirs in this area.
- strike-slip faults /
- fault-dissolution body /
- hydrocarbon reservoirs /
- Tarim Basin

HTML全文

图 1 研究区构造位置图与地层柱状图

Figure 1. Tectonic location and stratigraphic column of the studied area

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图 2 过顺南—研究区NE向地震剖面

(位置见图 1)

Figure 2. NE seismic profile across the Shunnan-studied area

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图 3 过研究区内东西向地震剖面

(位置见图 5)

Figure 3. East-west seismic profile across the studied area

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图 4 肖塘-顺南-古城地区上奥陶统底面断裂系统图

a.顺南-肖塘地区上奥陶统底区域断裂系统图；b.肖塘南三维区上奥陶统底面断裂系统图

Figure 4. Map of the Upper Ordovician bottom fault system in Xiaotang-Shunnan-Gucheng area

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图 5 肖塘南三维重点层系相干属性平面图与断裂展布图

Figure 5. Map of coherence and faults distribution of key layers in the Xiaotangnan area

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图 6 肖塘南三维顺南4断裂分区平面、剖面图

a.肖塘南三维上奥陶统底面曲率属性平面图; b.顺南4断裂带分区特征; c.研究区内东西向地震剖面(位置见图b)

Figure 6. Zoning characteristic and seismic profile of Shunnan 4 extended strike-slip fault in the Xiaotangnan area

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图 7 顺南4断裂带断溶体圈闭刻画与储层空间雕刻

a.顺南4断裂带多属性融合平面图；b.2号断溶体储层空间雕刻

Figure 7. Fault-dissolution body trap characterization and reservoir space carving of Shunnan 4 extended strike-slip fault

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图 8 顺南4断裂带井位目标优选

Figure 8. Optimization of well location target in Shunnan 4 extension strike-slip fault zone

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