英坨地区高台子油层测井资料解释与储层综合评价

发布时间：2018-04-23 19:17

本文选题：英坨地区 + 成岩作用　；参考：《新疆大学》2017年硕士论文

【摘要】：针对吉林油田所述英坨地区碎屑砂岩储层岩石学特征、成岩作用特征、测井响应特征、隔夹层发育特征物性条件较好的储层优选等一系列兹待解决的问题,本文利用沉积学、岩石学、测井解释原理和油气成藏基本理论观点,从岩石类型、矿物成分及含量、成岩作用类型、电性与储层其他参数相关性等方面入手,对英坨地区高台子油层碎屑砂岩进行储层综合评价。研究重点为建立储层物性的测井解释模型、分析成岩作用对储层物性的影响并划分成岩相类型、隔夹层类型的识别及隔夹层特征的参数表征,最终实现对该区块储层物性影响因素及影响机制的解释、划分储层等级并优选有利储层目标区。研究表明,英坨地区高台子油层碎屑砂岩储层主要为岩屑长石砂岩及长石岩屑砂岩,成分成熟度较低,结果成熟度中等-差,主要孔隙类型以原生粒间孔为主,次生溶蚀孔次之,兼有少量裂缝性孔隙。储层总体上处于出早成岩阶段末期至中成岩阶段A期阶段,对储层起破坏作用的成岩作用为机械压实-压溶作用及胶结作用;对储层物性有建设性作用的成岩作用为溶解作用,并针对以上特征将储集层分为氧化硅胶结-残余原生孔隙成岩相、碳酸盐弱胶结-原生孔隙成岩相、碳酸盐强胶结-残余原生孔隙成岩相、碳酸盐溶解-原生-次生孔隙成岩相。测井资料解释方面首先进行了数据标准化处理,随后依据电性与物性、岩性的良好相关性建立了储层孔隙度、渗透率解释模型,解释结果误差在标准限定范围内。研究区隔夹层主要以泥质隔夹层与钙质隔夹层为主,实现了对不同类型的测井识别,并指出隔夹层发育情况受辫状河三角洲亚相分布范围控制。综合分析,英坨地区高台子油层碎屑砂岩储层的物性特征主要受沉积作用与成岩作用控制,此外断裂密集带的发育与断裂活动也对其造成了局部影响。最终将储层划分为Ⅰ-Ⅲ三个物性级别,并针对三个岩性段优选出有利储层目标区。
[Abstract]:In view of the lithologic characteristics, diagenesis characteristics, logging response characteristics and reservoir optimum selection of clastic sandstone reservoirs in Yingtuo area described in Jilin Oilfield, the authors use sedimentology. The petrology, logging interpretation principle and the basic theory of oil and gas reservoir formation are discussed from the aspects of rock type, mineral composition and content, diagenesis type, electrical property and correlation with other reservoir parameters, etc. The reservoir comprehensive evaluation of clastic sandstone in Gaotaizi reservoir in Yingtuo area was carried out. The emphasis of the study is to establish a log interpretation model of reservoir physical properties, analyze the influence of diagenesis on reservoir physical properties and divide diagenetic facies types, identify intercalation types and characterize the parameters of intercalation characteristics. Finally, the interpretation of the influencing factors and influencing mechanism of reservoir physical properties in this block is realized, and the reservoir grade is divided and favorable reservoir target area is selected. The results show that the clastic sandstone reservoirs of Gaotaizi reservoir in Yingtuo area are mainly lithic feldspathic sandstone and feldspathic lithic sandstone. The compositional maturity is low, the result maturity is medium to poor, and the main pore types are primary intergranular pores. The secondary dissolution pore is the second, with a small number of fractured pores. The reservoir is generally in the stage A from the late stage of early diagenesis to the stage A of middle diagenesis. The diagenesis of reservoir failure is mechanical compact-pressure solution and cementation, and the diagenesis, which has constructive effect on reservoir physical properties, is dissolution. According to the above characteristics, the reservoir is divided into silica cementation and residual primary pore diagenesis, carbonate weak cementation and primary pore diagenetic facies, carbonate strong cementation and residual primary pore diagenetic facies. Carbonate dissolution-primary-secondary pore diagenetic facies. In the interpretation of logging data, the data are standardized, and then, according to the good correlation between electrical properties and physical properties and lithology, the interpretation model of reservoir porosity and permeability is established, and the interpretation error is within the limit of standard. In this paper, muddy intercalation and calcareous intercalation are the main types of interlayer in the study area. Different types of logging identification are realized, and it is pointed out that the development of interlayer is controlled by the distribution of braided river delta subfacies. Comprehensive analysis shows that the physical properties of clastic sandstone reservoirs in Gaotaizi reservoir in Yingtuo area are mainly controlled by sedimentation and diagenesis, in addition, the development of dense fault zones and fault activities also have a local impact on them. Finally, the reservoir is divided into three classes of physical properties, and favorable reservoir target areas are selected for the three lithologic segments.
【学位授予单位】：新疆大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P618.13;P631.81

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