走滑断裂特征对油气勘探方向的选择——以塔中北坡顺1井区为例

李萌; 汤良杰; 李宗杰; 甄素静; 杨素举; 田亚杰

doi:10.11781/sysydz201601113

走滑断裂特征对油气勘探方向的选择——以塔中北坡顺1井区为例

doi: 10.11781/sysydz201601113

李萌^1,2,3,
汤良杰^1,2, ,,
李宗杰⁴,
甄素静^1,2,
杨素举⁴,
田亚杰^1,2

1.
中国石油大学(北京)油气资源与探测国家重点实验室, 北京 102249
2. 中国石油大学(北京)盆地与油藏研究中心, 北京 102249
3. 中国冶金地质总局矿产资源研究院, 北京 101300
4. 中国石化西北油田分公司, 乌鲁木齐 830011

基金项目: 国家重点基础研究发展计划(973计划)项目(2012CB214804,2005CB422107),国家自然科学基金项目(41172125,40972090),国家科技重大专项(2011ZX05002-003-001,2011ZX05029-002,2011ZX05002-006-007HZ),中国石油化工股份有限公司项目(P11086)和中国石化西北油田分公司项目(KY2012-S-051)联合资助。

详细信息

作者简介:
李萌(1984-),男,博士研究生,从事含油气盆地构造研究。E-mail:limeng.juwen@163.com。

通讯作者:
汤良杰(1957-),男,教授,主要研究方向为含油气盆地构造分析。E-mail:tanglj@cup.edu.cn。

中图分类号: TE122.3
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出版历程
- 收稿日期: 2014-11-21
- 修回日期: 2015-12-14
- 刊出日期: 2016-01-28

Fault characteristics and their petroleum geology significance:A case study of well Shun-1 on the northern slope of the central Tarim Basin

Li Meng^1,2,3,
Tang Liangjie^{1,2
, ,},
Li Zongjie⁴,
Zhen Sujing^1,2,
Yang Suju⁴,
Tian Yajie^1,2

1.
State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Beijing 102249, China
2. Basin & Reservoir Research Center, China University of Petroleum, Beijing 102249, China
3. Institute of Mineral Resource Research, China Metallurgical Geology Bureau, Beijing 101300
4. SINOPEC Northwest Oilfield Company, Urumqi, Xinjiang 830011, China

摘要

摘要: 通过三维地震精细解释,运用断距分析、断层生长指数等方法,探讨了塔中北坡顺1井区走滑断裂的几何学特征、活动期次及其成因机制。该区走滑断裂及其伴生构造具有明显的分层特征,同时又具有分段差异:西段构成基底走滑卷入的"负花状"构造,东段则表现为盖层滑脱型。加里东中期(Ⅲ幕)基底走滑断裂已开始活动;海西早期,走滑断裂再次活动,上奥陶统桑塔木组厚层泥岩起到滑脱层的作用,基底走滑断裂剪切引起的盖层变形,在志留系发育伴生雁列正断层及其地堑、地垒组合;海西末期,挤压应力沿NE走向释放减弱而出现构造分异,基底走滑断裂西段再次复活,并与雁列正断裂上下贯通构成"负花状"构造;之后在印支期持续活动,发育断层相关褶皱等。海西末期-印支期,基底卷入型走滑断裂油气运移通道的开启、志留系等构造圈闭的定型与主成藏期具备良好的时空配置关系,走滑断裂附近可发育奥陶系岩溶。
- 石油地质 /
- 走滑断裂 /
- 断裂特征 /
- 顺1井区 /
- 塔中北坡
Abstract: The geometric characteristics, active stages and formation mechanism of strike-slip faults in well Shun-1 area on the northern slope of the central Tarim Basin were studied through 3D seismic interpretation and combined with fault throw and fault growth index analyses. The study area has clear layered characteristics. Deep structures are mainly of linear strike-slip faults; middle structures are primarily normal faults which group sinistralen echelon and form horst-graben structures, locally forming negative flower structures with a basement strike-slip fault. Small-scale normal faults are developed in shallow structures. Basement strike-slip faults have formed in the middle Caledonian and activated again associated with en echelon normal faults in Silurian during the early Hercynian. The thick Sangtamu Formation mudstone of the Upper Ordovician is identified as a detachment layer, which resulted the decollement between the basement strike-slip fault and its cover. This region has experienced magmatism and widespread extension in the late Hercynian. The rejuvenation of basement strike-slip faults resulted in the local strong compression in the latest Hercynian and fault-related folds in the Indosinian.In the latest Hercynian, basement strike-slip faulting was linked with en echelon normal faults, which could be favorable hydrocarbon migration paths. Strike-slip induced folds cut by en echelon normal faults, forming faulted anticlines, faulted nose and fault blocks, could be favorable traps for petroleum accumulation. The Ordovician palaeokarst that developed extensively near strike-slip fault zones, is an important future target for petroleum exploration.
- petroleum geology /
- strike-slip fault /
- fault characteristics /
- well Shun-1 area /
- northern slope of central Tarim Basin

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