文档介绍：论文题目:青平川油田禹居区长 2 储层测井研究
工程领域:地质工程
硕士生:桂阿娟(签名)
指导教师:李新虎(签名)
摘要
青平川油田构造为一平缓的西倾单斜,地层倾角小于 1°,千米坡降为 4~5m,局
部发育因差异压实作用而形成的鼻状构造。研究区长 2 油层组,主要受沉积微相和成岩
后生作用的影响,属于低孔、低渗储层。因此,对长 2 储层特征的详细研究,为储层长
期稳产提供可靠依据。
在分析关键井的测井、地质、岩心、试油资料的基础上,将长 2 储层划分为长 21、
22、23 三个亚层,分析得出青平川油田长 2 油层组为辫状河沉积。总的岩石学特征为低
成分成熟度、中等结构成熟度。孔隙度主要分布在 ~%,平均为 %;渗透率
主要分布在 ~×10-3µm2,平均为 %。孔隙类型主要为原生粒间孔,其次
为溶蚀孔隙。主要成岩作用有压实作用、胶结作用、溶蚀作用等,本区成岩作用己达晚
成岩 A 期。
本文应用测井解释及地质方法,详细研究了储层的含油性、岩性、物性和电性。在
此基础上,建立了适合本区的孔隙度、渗透率测井解释模型及有效厚度下限标准。依据
该区长 2 储层分析化验和测井资料,在研究储层特征的基础上,结合测井解释模型,将
长 2 储层进行分类。储层类型总体上以 I、II 类储层为主。
关键词:青平川油田;孔隙度;渗透率;测井解释模型
研究类型:应用研究
Subject :Reservoir’s Logging Studies of Chang 2 in Yuju Aera of
QingPingChuanOilfield
Specialty :GeologyEngineering
Name: GuiA-juan (Signature)_____________
Instructor: Lixin-hu (Signature)_____________
ABSTRACT
The structure of Qingpingchuan Oilfield is a smooth westward monocline, whose strata
dip is less than 1 degree and km grade is 4~5m, and nose structure locally developed because
of paction. Chang 2 oil formation belongs to low porosity and low
permeability reservoirs influenced by Sedimentary micro-facies and diagenesis. Therefore,
detailed researches on the characteristics of Chang 2 reservoir can provide a reliable basis for
reservoir’s long-term stability.
Chang 2 reservoirs can be divided into three sub-layers based on the analyzing of the key
well’s logs, geological, cores, testing information. prehensive analysis we can
conclude that chang 2 reservoirs in Qingpingchuan Oilfield are braided river sedimentary. The
petrology of reservoir is characterized by positional and medium structural maturity.
Porosity is mainly distributed in ~% and the average is %. Permeability is mainly
distributed in ~×10-3µm2 and the average is %. Pore type is mainly primary
intergranularand corrosion porosity. The main diagenesis of the study area paction,
cementation, dissolution and so on, the reservoi