库车坳陷东部下第三系碎屑岩储层分异成因模式

谭秀成; 李凌; 曹剑; 王振宇; 马青; 孙崇浩; 周成刚

库车坳陷东部下第三系碎屑岩储层分异成因模式

谭秀成^{1, 2,},
李凌²,
曹剑³,
王振宇²,
马青²,
孙崇浩²,
周成刚⁴

1.
成都理工大学地球科学系, 四川成都 610059
2.
西南石油大学资源与环境学院, 四川成都 610500
3.
南京大学地球科学系, 江苏南京 210093
4.
东方地球物理公司研究院库尔勒分院, 新疆库尔勒 841001

基金项目:

国家“十五”科技攻关项目 2001BA605A-02-01-05

详细信息

作者简介:
谭秀成(1970-), 男, 讲师, 在读博士生, 从事沉积、储层研究.E-mail: tanxiucheng70@163.com

中图分类号: P618.130.2
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出版历程
- 收稿日期: 2006-05-16
- 刊出日期: 2007-01-25

Mechanism and Models for the Lower Tertiary Detrital Reservoir Evolution, Eastern Kuqa Depression of the Tarim Basin

1.
Department of Earth Sciences, Chengdu University of Technology, Chengdu 610059, China
2.
Department of Resource and Environment , Southwest Petroleum University, Chengdu 610500, China
3.
Department of Earth Sciences, Nanjing University, Nanjing 210093, China
4.
Korla Branch of Geophysical Research Institute, Bureau of Geophysical Prospecting Co. Ltd., CNPC, Korla 841001, China

摘要

摘要: 库车坳陷东部下第三系优质储层主要发育于细粒碎屑岩, 而不是粗粒碎屑岩中.从构造沉积作用分析入手, 结合该区的古气候特征, 通过对两种碎屑岩沉积和成岩演化过程的深入分析, 认为粗粒与细粒碎屑岩经历了同沉积、浅埋藏区域地下水、中深埋藏压实、构造破裂与埋藏溶蚀、构造挤压与超压形成等多阶段的叠合改造, 不同阶段对碎屑岩储层特征影响不一, 从而使得储层储集空间特征出现较大分异.成岩与储层分异的结果形成了现今的油气储层, 主要发育于细粒的粉砂岩储层中, 据此建立了储层发育演化的成因模式.
- 成岩分异 /
- 储层分异 /
- 储层成因模式 /
- 下第三系 /
- 库车坳陷
Abstract: The Tertiary high quality reservoir was mainly developed in the fine, but not coarse granular detrital rocks of eastern Kuqa depression of the Tarim basin. The reservoir evolution is reconstructed in this paper, based on a deeper analysis of tectonic, sedimentary and diagenetic process of these two rocks combined with the paleo-climate of this area. A deep analysis of sedimentary and evolution of the fine and coarse granular detrital rocks suggests that the two rocks underwent multi superimposed diagenetic effects, including syn-sedimentary, local ground water in low depth, compaction in intermediate depth, structurally fracture and burial solution, and structurally extrusion. Therefore, the present reservoir features of the two rocks vary largely. The reconstructed model for the reservoir evolution enriches the study of forming mechanism research of detrital clastic rocks.
- diagenetic evolution /
- reservoir evolution /
- model of reservoir formation /
- Lower Tertiary /
- Kuqa depression

HTML全文

图 1 塔里木盆地库车坳陷地理位置及构造分区示意图

Fig. 1. Sketch of geologic location and tectonic sub-units

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图 2 库车坳陷东部下第三系库姆格列木群沉积相分布

1.阿瓦特河剖面; 2.卡普沙良河剖面; 3.克拉苏河剖面; 4.库车河剖面; 5.克孜勒努尔剖面; 6.吐格尔明剖面; 7.剥蚀尖灭线; 8.超覆尖灭线; 9.地层厚度等值线; 10.相界线; 11.亚相界线; 12.井号; 13.物源; 14.造山带

Fig. 2. Sedimentary facies distribution of the Lower Tertiary Kumugeliemu Group, eastern Kuqa depression of the Tarim basin

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图 3 库车坳陷东部下第三系储层分异成因模式示意图

a.构造与沉积作用决定储层的原始差异; b.浅埋藏早期地下水与泥岩压实流体的不同活动特点是储层成岩分异的根本原因; c.浅埋藏早期的胶结作用是储层分异的重要原因; d.库车期的构造破裂作用和酸性流体侵入是储层成岩分异作用强化的基础; e.油气进入的酸性流体溶蚀作用是储层成岩分异强化的关键时期, 储集空间面貌最终定型

Fig. 3. Sketch showing the mechanism and models for the Lower Tertiary reservoir feature changes, eastern Kuqa depression of the Tarim basin

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图 4 库车坳陷东部下第三系储层单个正粒序砂体早期胶结物含量与孔隙度的关系(迪那201井)

Fig. 4. Correlation of cement content and porosity during the early diagenesis of the Lower Tertiary reservoir sandstone, eastern Kuqa depression of the Tarim basin (DN201)

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表 1 库车坳陷东部下第三系储层岩石学特征对比

Table 1. Simplified correlation of petrologic characteristics of the Lower Tertiary reservoirs, eastern Kuqa depression of the Tarim basin

表 2 库车坳陷东部下第三系储层孔隙度演变分析

Table 2. Simplified table of porosity evolution of the Lower Tertiary reservoirs, eastern Kuqa depression of the Tarim basin

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