胜利油田上古生界致密砂岩低对比度油藏测井解释模式细分技术  

Well Logging Interpretation Model Subdivision Technique for Low Contrast Reservoir of Tight Sand Reservoir of Neopaleozoic in Shengli Oilfield

作　　者：张晋言 刘伟 李绍霞 张文姣 齐国华 ZHANG Jinyan;LIU Wei;LI Shaoxia;ZHANG Wenjiao;QI Guohua(Logging Company,SINOPEC Shengli Petroleum Engineering CO.LTD.,Dongying,Shandong 257096,China)

机构地区：[1]中石化胜利石油工程有限公司测井公司,山东东营257096

出　　处：《测井技术》2018年第2期193-199,共7页Well Logging Technology

基　　金：国家重大科技专项地震与井筒精细勘探关键技术(2016ZX05006-002);国家重大科技专项页岩气勘探地球物理技术研究(2017ZX05036-005)

摘　　要：胜利花沟地区上古生界致密砂岩油藏成岩作用强,层内岩性、储集空间复杂多变,油质轻,属于典型的物性控制油藏。由于岩性及储集空间类型变化的影响,测井电阻率反映流体性质能力弱化,油水层对比度低;孔隙度接近的储层有的自喷高产,有的需要压裂改造,产能差异大,储层有效性界定困难。研究砂体层内岩石结构、储集空间类型、含油气性、地化特性等变化规律,建立测井解释模式细分技术,将储层储集空间划分为破碎型、裂缝-孔隙型、基质孔隙型3种类型。在宏尺度、微尺度、渗流3大类参数评价的基础上,细分储层内流动单元并进行产能预测,实现储层有效性精细评价和流体性质识别。在HGX101等10余口井中取得了显著的地质效果,为优质储量的发现和开发提供了技术支持。Neopaleozoic tight sand reservoir in HuaGou area of Shengli oilfield is characterized by strong diagenesis,complex lithology,complex pore space and light oil.It is a typical physical property controlled reservoir.Due to the changes of lithology and the types of reservoir space the ability of resistivity to reflect the fluid properties is weakened,which leads to the low contrast of oil and water layer.In addition,reservoirs with close porosity may have different production,some have high production due to self-blowing,but others need fracturing.So,the huge difference in production capacity has made it difficult to evaluate the reservoir effectiveness.In order to improve the accuracy of logging interpretation,a logging interpretation model subdivision technique is established based on the rock structure of sand body,reservoir space types,oil-gas potential and geochemical properties which can divide the reservoir space into three types:fractured reservoir,fracture-pore reservoir and matrix pore reservoir.Meanwhile,based on the evaluation of three kinds of parameters:macro-scale,micro-scale,and seepage,the flow units in the reservoir are subdivided and productivity prediction are made to achieve a fine evaluation of reservoir effectiveness and identification of fluid properties.Significant geological effects have been achieved in more than 10 wells such as well HGX101 by using this technique,which provide technical support for the discovery and development of high-quality reserves.

关 键 词：测井解释 低对比度油藏 流动单元 层内细分 储层有效性 流体性质识别 产能预测 

分 类 号：P631.84[天文地球—地质矿产勘探]