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[1]王珂,张惠良,张荣虎,等.超深层致密砂岩储层构造裂缝定量表征与分布预测——以塔里木盆地库车坳陷克深5气藏为例[J].地球科学与环境学报,2017,39(05):652-668.
 WANG Ke,ZHANG Hui-liang,ZHANG Rong-hu,et al.Quantitative Characterization and Distribution Prediction of Structural Fracture in Ultra-deep Tight Sandstone Reservoir—A Case Study of Keshen5 Gas Pool in Kuqa Depression of Tarim Basin[J].Journal of Earth Sciences and Environment,2017,39(05):652-668.
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超深层致密砂岩储层构造裂缝定量表征与分布预测——以塔里木盆地库车坳陷克深5气藏为例(PDF)
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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:
第39卷
期数:
2017年第05期
页码:
652-668
栏目:
基础地质与矿产地质
出版日期:
2017-09-15

文章信息/Info

Title:
Quantitative Characterization and Distribution Prediction of Structural Fracture in Ultra-deep Tight Sandstone Reservoir—A Case Study of Keshen5 Gas Pool in Kuqa Depression of Tarim Basin
文章编号:
1672-6561(2017)05-0652-17
作者:
王珂张惠良张荣虎王俊鹏孙雄伟杨学君
1.中国石油勘探开发研究院,北京 100083; 2.中国石油塔里木油田公司,新疆 库尔勒 841000; 3.中国石油杭州地质研究院,浙江 杭州 310023
Author(s):
WANG Ke ZHANG Hui-liang ZHANG Rong-hu WANG Jun-peng SUN Xiong-wei YANG Xue-jun
1. PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China; 2. PetroChina Tarim Oilfield Company, Korla 841000, Xinjiang, China; 3. PetroChina Hangzhou Research Institute of Geology, Hangzhou 310023, Zhejiang, China
关键词:
致密砂岩构造裂缝构造应力场定量表征分布预测超深层库车坳陷塔里木盆地
Keywords:
tight sandstone structural fracture tectonic stress field quantitative characterization distribution prediction ultra-deep Kuqa depression Tarim Basin
分类号:
P618.130.2;TE122.2
DOI:
-
文献标志码:
A
摘要:
综合采用岩芯及薄片观察、岩芯CT扫描及成像测井解释等方法,对塔里木盆地库车坳陷克深5气藏的构造裂缝进行了定量表征,在此基础上分析了构造裂缝的成因与有效性,并基于构造应力场数值模拟法对构造裂缝的空间分布规律进行了预测。结果表明:克深5气藏的构造裂缝以高角度和直立裂缝为主,岩芯裂缝开度为0~0.4 mm,多被方解石充填,微观裂缝包括矿物颗粒的穿粒缝和破裂纹,开度为20~30 μm;单井纵向上具有构造裂缝密集发育段和不发育段相间分布的特征;克深5气藏主要发育白垩纪、古近纪和新近纪—第四纪3期构造裂缝,其中第3期构造裂缝是克深5区块工业规模气藏形成的关键因素之一;古构造应力场决定了构造裂缝的组系特征和数量,沿边界断层的左旋剪切应力造成了构造应力方位和构造裂缝走向由背斜西南部的近EW向过渡为东北部的近SN向;现今构造应力场不产生新的构造裂缝,但会降低先存裂缝的有效性;背斜高部位的构造裂缝线密度较低,但开度、孔隙度和渗透率等较高,单井平均天然气产能相应也较高,纵向上随深度增加,构造裂缝线密度增大而有效开度减小;不整合面对构造裂缝有效性的控制作用主要局限在距不整合面约为70 m的范围内。
Abstract:
Combined with core and thin section observation, CT scan, image logging interpretation, the characteristics of structural fracture of Keshen5 gas pool in Kuqa depression of Tarim Basin were quantitatively characterized; the origin and validity of structural fracture were analyzed; and the spatial distribution regularity of structural fracture was predicted by numerical simulation of tectonic stress field. The results show that the structural fractures of Keshen5 gas pool are mostly high dip angle or upright ones and highly filled by calcite, in which the apertures distribute at 0-0.4 mm; microscopic fractures, in which the apertures mostly distribute at 20-30μm, include grain-crossed fracture and mineral grain crack; in vertical, intensively developed sections and undeveloped sections of structural facture have the regularity of interphase distribution; there are three periods of structural fractures formed in Cretaceous, Paleogene and Neogene-Quarternary, respectively, in which the 3rd period of structural fracture is one of the key factors for industrial gas pool finally formed in Keshen5 area; palaeo-tectonic stress field determines the system characteristics and quantity of structural fractures, and the levorotatory shearing stress along boundary faults results in that the direction of tectonic stress and structural fractures changes from ~EW at southwest to ~SN at northwest of the anticline; present tectonic stress field generally would not form new fractures, but affects the effectiveness of pre-exist fractures; the high position of anticline has low linear density of structural fracture, but high aperture, porosity and permeability, therefore, the average gas production capacity of single well is also high correspondingly; in vertical, with the deepening of depth, the linear density of structural fracture increases while the effective aperture decreases, which means that the integrated development extent reduces; the controlling effect of unconformity on structural fracture validity is restricted within about 70 m.

参考文献/References:

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相似文献/References:

[1]柴毓,王贵文,赖锦.四川安岳地区须二段致密砂岩储层成岩相特征及测井识别[J].地球科学与环境学报,2014,36(03):38.
 CHAI Yu,WANG Gui-wen,LAI Jin.Diagenetic Facies Characteristics and Logging Recognition of Tight Sandstone Reservoir in Xu-2 Section of Anyue Area, Sichuan[J].Journal of Earth Sciences and Environment,2014,36(05):38.
[2]边会媛,王飞,岳崇旺,等.利用弹性参数识别致密砂岩储层流体性质[J].地球科学与环境学报,2014,36(04):99.
 BIAN Hui-yuan,WANG Fei,YUE Chong-wang,et al.Fluid Property of Tight Sandstone Reservoir Identified with Elastic Parameters[J].Journal of Earth Sciences and Environment,2014,36(05):99.

备注/Memo

备注/Memo:
收稿日期:2017-06-29
基金项目:国家科技重大专项项目(2016ZX05003-001-002,2016ZX05001-002-003)
作者简介:王 珂(1987-),男,山东郓城人,中国石油杭州地质研究院工程师,理学博士,博士后,E-mail:wangk_hz@petrochina.com.cn。
更新日期/Last Update: 2017-10-19