高校地质学报2016，Vol.22Issue(4)：707-715,9.DOI:10.16108/j.issn1006-7493.2016138
克拉苏构造带盐下超深层储层裂缝组合模式及分布规律
Fracture Combination Patterns and Distribution of Ultra-deep Reservoirs beneath Salt in the Kelasu Structural Belt
摘要
Abstract
The ultra-deep reservoirs beneath salt in the Kelasu structural belt belong to low porosity and fractured sandstone reservoir. Tectonic fractures are common in this area and show a complex distribution pattern. These widely distributed tectonic fractures have large influence on single-well production of Kelasu structural belt. At present, research on reservoir fracture in this area is mainly focused on description, characterization, and prediction of fractures. However, due to low resolution of seismic data, limited core data and uncertainties in interpretation of images of well logging, the study of is limited. Only some statistical data such as fracture density and fracture opening are applied in the process of hydrocarbon exploration. Outcrop, core, and well logging data were used. In this study, research on reservoir fracture and combinations of fractures is carried out in this area. It is found that there are primary and secondary cracks. The scale of main cracks is larger than that of the secondary cracks. The primary cracks are generally perpendicular to the strata, and are mostly tension cracks or tension-shear cracks. The secondary cracks are generally associated the main cracks. There are many different contacts between the cracks, mainly in“T”,“λ”,“V”,“y”, and“τ”shapes. According to the distribution of contacts between cracks, four combination modes of reservoir cracks have been established in this area including“parallel mode”,“broom like mode”,“adjust mode”,“echelon mode”. Together with the tectonic process of the formation of faulted anticline and the difference between crack combinations, three types of genetic regions of crack combination have been identified, i.e., are tectonically transitional region, folding-related area, and fault formation area, corresponding to the first, second, and third category of high yield wells, respectively.关键词
克拉苏构造带/裂缝性低孔砂岩储层/裂缝/裂缝组合模式/分布规律Key words
Kelasu structural belt/fractured low porosity sandstone reservoir/crack/crack combination mode/distribution分类
天文与地球科学引用本文复制引用
周露,雷刚林,周鹏,汪伟,张星,史超群,王振鸿,张琪..克拉苏构造带盐下超深层储层裂缝组合模式及分布规律[J].高校地质学报,2016,22(4):707-715,9.基金项目
中国石油天然气股份公司重大专项“库车前陆深层油气地质理论与勘探目标评价”（2014E-2101）；国家科技重大专项课题塔里木前陆盆地油气成藏、关键勘探技术与新领域目标优选（2011ZX05003-004）；国家自然科学基金项目（41272227；41572187）联合资助 （）
