逆冲断裂对富满油田哈得区块油气成藏的控制作用

李世银; 罗枭; 王彭; 李会元; 覃汉莲; 李景瑞

doi:10.11932/karst20230611

逆冲断裂对富满油田哈得区块油气成藏的控制作用

doi: 10.11932/karst20230611

李世银^1,,
罗枭¹,
王彭¹,
李会元¹,
覃汉莲^{2, 3, ,},
李景瑞^{2, 3, 4,}

1.
中国石油塔里木油田公司勘探开发研究院, 新疆库尔勒 841000
2.
中国地质科学院岩溶地质研究所/自然资源部、广西岩溶动力学重点实验室/联合国教科文组织国际岩溶研究中心，广西桂林 541004
3.
广西平果喀斯特生态系统国家野外科学观测研究站，广西平果 531406
4.
中国矿业大学（北京）地球科学与测绘工程学院，北京 10083

基金项目: 中国石油天然气股份有限公司重大科技专项“缝洞型碳酸盐岩油气藏效益开发关键技术研究与应用”（2018E-1806）；中国石油天然气股份有限公司科学研究与技术开发项目“多尺度缝洞型油藏储层静态刻画及动态描述技术研究”（2021DJ1501）

详细信息

作者简介:
李世银（1978－），男，硕士，高级工程师，现从事油气地质综合研究工作。E-mail：lishiy-tlm@Petrochina.com.cn

通讯作者:
覃汉莲（1987－），女，助理研究员，主要从事岩溶基础地质研究工作。E-mail：327329298@qq.com

中图分类号: P618.13
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出版历程
- 收稿日期: 2023-03-15
- 网络出版日期: 2023-12-28
- 刊出日期: 2023-12-01

Control action of thrust fault to oil and gas accumulation in Hade block of the Fuman oilfield

LI Shiyin^1
,,
LUO Xiao¹,
WANG Peng¹,
LI Huiyuan¹,
QIN Hanlian^{2, 3
, ,},
LI Jingrui^{2, 3, 4
,}

1.
Research Institute of Exploration and Development, Tarim Oilfield Company, PetroChina, Korla, Xinjiang 841000, China
2.
Institute of Karst Geology, CAGS/Key Laboratory of Karst Dynamics, MNR & GZAR/International Research Center on Karst under the Auspices of UNESCO, Guilin, Guangxi 541004, China
3.
Pingguo Guangxi, Karst Ecosystem, National Observation and Research Station, Pingguo, Guangxi 531406, China
4.
College of Geoscience and Surveying Engineering, China University of Mining and Technology (Beijing), Beijing 10083, China

摘要

摘要: 塔里木盆地奥陶系碳酸盐岩是我国深层油气勘探开发的重点领域。近年来，富满油田断控油气藏成为油气勘探开发的重点目标，走滑断裂具有控储层、控圈闭、控富集的作用。但在富满油田哈得区块发育的逆冲断裂对油气成藏的控制作用认识不清，制约了该区油气藏的高效开发。为此，文章在分析塔里木盆地富满油田地质背景的基础上，系统总结了哈得区块逆冲断裂及走滑断裂的展布特征，明确了两者平面展布、纵向切割关系和活动时期。结合区域油气成藏期次研究，明确了逆冲断裂对油气成藏的控制作用。研究结果表明：①富满油田走滑断裂形成于中奥陶世末期，即中加里东期，逆冲断裂主要活动期在海西期，晚于走滑断裂形成期；②富满油田主要为3期成藏（晚加里东期、晚海西期和喜山期），逆冲断裂可对晚海西期、喜山期充注成藏造成影响；③逆冲断裂与走滑断裂具有3种组合模式，在此基础上建立了哈得区块受逆冲断裂影响的3种油气成藏输导模式。结论认为，逆冲断裂与油源走滑断裂交汇点在上寒武统一间房组时，对油气成藏最为有利，具有多源供烃、多期成藏特点，对同类型油气藏勘探开发具有一定的指导意义。
- 塔里木盆地 /
- 富满油田 /
- 逆冲断裂 /
- 走滑断裂 /
- 油气成藏
Abstract: The Tarim Basin, renowned for its super large Ordovician marine carbonate oil and gas reservoirs, is a key area in the field of deep oil and gas exploration and development in China. Especially, the Fuman oilfield has become an important area in oil and gas exploration and development in recent years, largely owing to its extensively distributed fault-controlled gas reservoirs. Nevertheless, Hade block of the Fuman oilfield faces the complex interaction of thrust faults and strike-slip faults, which poses severe challenges. Due to the lack of comprehensive understanding of the impact of thrust faults on reservoir development, many wells with low yield and low efficiency had been drilled, which seriously hindered the effective exploration and development of oil and gas in this area. Therefore, an exhaustive geological examination of the Fuman oilfield in the Tarim Basin was meticulously conducted. This analytical endeavor was directed towards illuminating the intricacies underlying the synergy of thrust faults and strike-slip faults, and their consequential influence on oil and gas reservoirs. Methodologically, a methodical exploration was undertaken based on state-of-the-art 3D seismic data, thereby offering an all-encompassing perspective on the spatiotemporal characteristics of these fault structures in Hade block. The scrutiny further encompassed the delineation of the planar distribution of these faults, the elucidation of vertical crosscutting relationships, and the ascertaining of fault activity periods. The research findings were subsequently amalgamated with a comprehensive investigation of the regional temporal periods underpinning oil and gas accumulation, thereby proffering a lucid perspective on the dominion of thrust faults in this context. The investigation results display the key information on the endemic geological evolution of the Fuman oilfield. Foremost, the research findings determine that these fault structures originated from the late Middle Ordovician, especially the Middle Caledonian period. Noticeably, thrust fault activities peaked during the subsequent Hercynian period, i.e. after the appearance of strike-slip faults. This temporal distinction between the fault types is of profound significance for understanding their respective roles in oil and gas accumulation. The Fuman oilfield is divided into three different stages of oil and gas accumulation, namely, the late Caledonian, late Hercynian, and Himalayan stages. The results show that the oil and gas accumulation in the late Caledonian period is mainly affected by strike-slip faults, while the influence of thrust faults is great in the late Hercynian and Himalayan periods. The understanding of the interplay between fault types and oil and gas accumulation is of great significance for accurate exploration and development of benefit model in oil areas. In addition, this study unveiled three distinct modes of convergence between thrust faults and strike-slip faults, based on which three different modes of oil and gas accumulation and conveyance steered by thrust faults in Hade block were delineated. It is concluded that when thrust faults intersect with non-petroleum-endowed strike-slip faults in the Upper Cambrian-Yijianfang Formation, the reservoir is mainly formed in the late Hercynian period. When thrust faults and petroleum-endowed strike-slip faults intersect in the Middle Cambrian, the reservoir is mainly formed in the late Caledonian period. The intersection of thrust faults and petroleum-endowed strike-slip faults in the Upper Cambrian-Yijianfang Formation is most favorable for oil and gas accumulation, with characteristics of multi-source hydrocarbon supply and multi-stage accumulation. These conclusions provide valuable experience of and incisive insights into the exploration and development of similar oil and gas reservoirs, which is conducive to efficient decision making in the ongoing search for energy resources.
- Tarim Basin /
- the Fuman oilfield /
- thrust fault /
- strike-slip fault /
- oil and gas accumulation

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图 1 塔里木盆地北部坳陷平面分布及奥陶系地质柱状简图

1. 井位 2. 盆地边界 3. 一级构造边界 4. 二级构造边界 5. 断层 6. 研究区 7. 油田 8. 气田 9. 坳陷 10. 隆起 11. 不整合面 12. 储层

Figure 1. Bar chart of Ordovician geology and horizontal distribution of the depression in north Tarim Basin

1. Well location 2. Basin boundary 3. Level-1 tectonic boundary 4. Level-2 tectonic boundary 5. Fault 6. The study area 7. Oilfield 8. Gas field 9. Depression 10. Uplift 11. Plane of unconformity 12. Reservoir

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图 2 富满油田哈得区块一间房组顶（左）、上寒武统底（右）相干属性图

1.水井 2.工业油气井 3.低产油气井 4. 油气显示井 5.本次研究范围

Figure 2. Coherent attribute of the top (left) of Yijianfang Formation and the bottom (right) of Upper Cambrian in Hade block, the Fuman oilfield

1. Well 2. Industrial oil and gas wells 3. well with low yield of oil and gas 4. Display well of oil and gas 5. Scope of this study

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图 3 富满油田哈得区块垂直断裂走向地震剖面图

Figure 3. Seismic profile of vertical fault strike in Hade block, the Fuman oilfield

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图 4 奥陶系裂缝碳酸盐胶结物U-Pb年龄谐和图（Age—年龄；MSWD—平均标准权重偏差；N—样品数）

Figure 4. Age of Ordovician fracture carbonate cement U-Pb (Age: age of U-Pb, MSWD: mean standard weight deviation, N: Number of samples)

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图 5 富满油田哈得区块逆冲断裂控藏模式图折日排液（m³·d⁻¹）

O₃t：奥陶系上统吐木休克组 O_1-2y：奥陶系中统一间房组 O₁p：奥陶系下统蓬莱坝组 ∈3H：上寒武统折日排液（m³·d⁻¹）折日产油（m³·d⁻¹）折日产气×10³（m³·d⁻¹）

Figure 5. Control model of thrust fault to reservoir in Hade block, the Fuman oilfield (m³·d⁻¹)

O₃t: the Upper Ordovician-Tumuxiuke Formation O_1-2y: the Middle Ordovician-Yijianfang Formation O₁p: the Lower Ordovician-Penglaiba Formation ∈3H: the Upper Cambrian Equivalent daily drainage (m³·d⁻¹) Equivalent daily oil production (m³·d⁻¹) Equivalent daily gas production×10³ (m³·d⁻¹)

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图 6 富满油田哈得区块油气成藏输导模式

Figure 6. Oil and gas accumulation and transport mode in Hade block, the Fuman oilfield

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