摘要
陆梁油田L9井区西山窑组J2x1油藏自21世纪初探明,但鉴于对油水层识别不清,导致后期投产井相继失利。为此,利用岩心观察、薄片鉴定、X衍射、岩电分析等资料,结合测井、试油试采动态等数据,对L9井区西山窑组油藏低对比度油层开展原因分析及识别方法研究。研究表明,岩性是影响该区物性、含油性、泥质含量、孔喉特征差异的根本因素。鉴于此,利用分岩性重新拟定了孔隙度、阿尔奇公式参数,并建立了分岩性识别低对比度油层的模型。结果表明分岩性识别低对比度油层解释结论与试油试采符合率达到94%,因此该方法在低对比度油层识别中具有较好的实用价值。
The J2x1 reservoir in Xishanyao formation of L9 oilfield has been proved since the early 21st century,however,in view of the unclear identification of oil and water layers leading to the failure of the production wells in the later stage.Therefor,based on the data of core observation,thin section identification,X-ray diffraction and rock-electro analysis,combined with well logging data and test oil mining dynamics data,the identification method and analysis of low contrast oil layer in Xishanyao formation reservoir of L9 well area was studied.Studies have shown that lithology is the fundamental factor affecting the physical properties,oil content,shale content,pore throat characteristics of the area.In view of this,the porosity and Archie formula parameters were re-formulated by using the lithology,and a model for identifying the low contrast oil layer by lithology was established.On the basis of the above,the consistency rate between the interpretation conclusion of low contrast oil layer and the test mining conincedence rate reached 94%.This method has good practical value in low contrast oil layer recognition.
作者
连丽霞
汪孝敬
史乐
黄焕
孟颖
杨波
LIAN Li-xia;WANG Xiao-jing;SHI Le;HUANG Huang;MENG Ying;YANG Bo(Research Institute of Experiment and Detection;Research Institute of Exploration and Development,Xinjiang Oilfield Company,Petro China,Urumqi 830000,China;No.2 Produce Oilfields,Petro China,Karamay 834000,China;Luliang Oilfield Operating Area,Xinjiang Oilfield Company,Petro China,Karamay 834000,China)
出处
《科学技术与工程》
北大核心
2019年第27期117-123,共7页
Science Technology and Engineering
基金
国家“十三五”科技重大专项(2016ZX05070001)
国家自然科学基金(41872118)资助
关键词
陆梁油田
L9井区
西山窑组
低对比度油层
分岩性测井识别
Luliang oilfield
wellblock L9
xishanyao formation
low-contrast reservoir
lithology logging identification