喇嘛甸油田北西块一区隔夹层类型及测井响应研究  

Research on Type of Barrier and Logging Response in NW Block of the First District of Lamadian Oilfield

作　　者：高华文[1] 柳成志[1] 董亦思[1] 李涛[1] 高华美[1] 

机构地区：[1]东北石油大学地球科学学院,大庆163318

出　　处：《科学技术与工程》2012年第15期3733-3737,共5页Science Technology and Engineering

摘　　要：喇嘛甸油田位于大庆长垣北端的一个油田,属于背斜型砂岩油藏。储层沉积环境为河流-三角洲沉积,岩性以细砂岩、细粉砂岩和泥质粉砂岩为主,层内、层间非均质严重。储层非均质性是影响地下油、气、水运动及油气采收率的主要因素。隔夹层是形成河流相储层非均质性的主要原因之一,是导致油田开发后期水淹形式复杂的主要地质因素。因此,储层非均质描述是油藏开发中后期储层研究的核心内容。隔夹层的研究对合理规划开发层系、提高原油采收率有重要的意义。综合该区块隔夹层的测井曲线的响应特征及工区各井所具有的曲线,隔夹层位置的判别主要可以用到自然电位法、微电极幅度差法识别一类夹层更有效。由于二、三类夹层物性与储层物性差别较小,不易于区分,可采用微电位回返法识别。根据岩心资料和储层物性分析,对喇北西块一区隔夹层进行了类型划分及响应识别研究。为地质建模、测井解释、剩余油分布等工作提供了基础资料。Lamadian oilfield is located in the northern of Changyuan Tectonic Belt of Daqing Oilfield,belongs to the anticline sandstone reservoir type.The reservoir sedimentary environment is fluvio_deltaic depositional system.Lithology is mainly sandstones,siltsands and pelitic siltstone,the heterogeneity among and in layers is serious.The reservoir heterogeneity is an important affecting factor for the underground oil,gas,water movement and oil-gas percolation.Barrier is one of the main reasons of fluvial facies reservoir heterogeneity,and it is the main geologic cause of complex flooding patterns at the later period of oil and gas field development.Therefore,the description of the reservoir heterogeneity is the core content of the reservoir development in the later part of reservoir research.Barrier has important implications for rational planning and development systems,it can also enhance oil recovery ratio.Combine the response feature of logging curves of barrier and the each well curves in the region,the descriminant of barrier position can use the actual effect of SP method and microelectrode amplitude difference method to recognize the first sandwich.Therefore second,third type of sandwich properties and reservoir property are nearly same and not easy to distinguish,so micropotential return method can be used to recognize.According to the analysis of core data and reservoir properties,the type divide and response recognition of La North West segment barrier are worked.It provides the basic data for the eological modeling,interpretation,and distribution of remaining oil.

关 键 词：喇嘛甸油田 隔夹层 测井响应 非均质性 

分 类 号：TE121.34[石油与天然气工程—油气勘探]