塔里木盆地克拉苏构造带克深2气藏储层裂缝带发育特征及与产量关系

发布时间：2018-02-11 22:59

本文关键词： 克拉苏构造带克深气藏裂缝带特征中和面调节裂缝带　出处：《天然气地球科学》2017年01期 　论文类型：期刊论文

【摘要】：位于塔里木盆地库车坳陷克拉苏构造带中部的克深2气藏,其储集层白垩系巴什基奇克组是库车山前的主力产气层,具有埋藏深度大、基质物性差的特征,裂缝的普遍发育对产量影响大。克深2气藏单井裂缝纵横向发育特征差别较大,目前仍缺少对克深2气藏裂缝带发育模式及其与产量的关系研究,无法做到有效地指导高产井的部署。利用钻井取心、FMI成像并结合地应力、测试资料,开展了克深2气藏纵横向裂缝带发育特征、形成机制的研究,探讨多种成因裂缝带与产量之间的关系,并提出相应的储层改造建议。取得如下认识:1根据裂缝产状,将克深2气藏裂缝发育带在空间上分为纵张裂缝带、网状裂缝带及调节裂缝带3种类型。纵张裂缝带平面上近EW走向,调节裂缝带平面上近SN走向,网状裂缝带则表现为多组走向。2克深2气藏并非平面上裂缝线密度越大、气产量越高,其主要受钻井液体系、钻揭储集层厚度、成像质量3个方面的影响。3克深2气藏发育的3种裂缝带主要受控于中和面效应、构造调节带2种因素。4根据克深2气藏的实钻地质资料、测试资料、构造位置及3种裂缝带的空间组合关系,将克深2气藏平面分为4个等级布井区,为今后克深2气藏开发井部署及相似气藏的高产井部署提供理论依据。
[Abstract]:Located in the Kuche depression of Tarim Basin in Kelasu tectonic zone central 2 grams of deep gas reservoir, the reservoir of Cretaceous in the Piedmont region of Kuche Bashki group is a main gas producing zone, with buried depth, poor physical properties of the characteristic matrix, the general development of cracks on yield. 2 grams deep gas single well fracture vertical development characteristics vary greatly, there is still a lack of research on the relationship between 2 grams of deep gas reservoir fracture zone and its yield, can effectively guide the high yield wells deployment. Coring by drilling, FMI imaging combined with stress test data, carried out 2 grams of deep gas reservoir in the vertical and horizontal cracks with developmental characteristics the study of the formation mechanism, to explore a variety of causes of cracks, the relationship between belt and yield, and put forward the corresponding suggestions. The transformation layer reservoir and the conclusions are as follows: 1 according to the fracture occurrence, the deep g fractured zone in the space is divided into longitudinal tensile crack with 2 gas reservoir , reticular fracture zone and fracture zone. 3 types of regulation of longitudinal tensile crack with plane near EW trending fracture zone, adjusting plane near SN direction, netfracture zone is more to group.2 grams of 2 deep gas reservoir is not on the plane of the fracture line density is bigger, the gas yield was higher, which is mainly affected by drilling the drilling fluid system, exposing the reservoir thickness, the imaging quality of 3 aspects of the effects of.3 2 grams of deep gas reservoirs in the 3 fracture zone is mainly controlled by the neutral surface effect, structural adjustment of drilling geological data, according to 2 grams deep gas reservoir with 2 factors of real.4 data, tectonic location and 3 kinds of cracks with the combination of spatial relations, the 2 grams of deep gas reservoir plane is divided into 4 grades wells area, to provide a theoretical basis for future deployment of high-yield wells 2 grams of deep gas reservoir well deployment and similar gas reservoir.

【作者单位】：中国石油天然气股份有限公司塔里木油田分公司勘探开发研究院;南京大学地球科学与工程学院;
【基金】：国家重大专项“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”(编号:2016ZX05003-004) 中国石油天然气股份公司专项(编号:2014E-2101) 国家自然科学基金项目(编号:41272227;41572187)联合资助
【分类号】：P618.13;TE37

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