PDF《岩芯胜坨油田沙河街组二段复杂断块 油藏水淹层测井解释研究...》

第32 卷第4期2010 年12 月 地球科学与环境学报 Journal of Earth Sciences and Environment Vol .

32 No .

4 Dec .

2010 收稿日期 :

2010 -01-28 基金项目 : 教育部留学回国人员科研启动基金项目( 2007) 作者简介 : 陈宁宁(

1984 - ) , 女,山东陵县人 , 工学硕士研究生 , 从事储层地质学及油藏描述研究 . E -mail: chenningning-0116@163. com 胜坨油田沙河街组二段复杂断块 油藏水淹层测井解释研究 陈宁宁, 杨少春, 黄建廷 ( 中国石油大学 地球资源与信息学院 , 山东 东营 257061) 摘要 :以胜坨油田发育的典型复杂断块油藏为例, 利用密闭取芯井资料建立判别关系和测井解释模型, 进行沙河 街组二段

1 -3 砂组复杂断块油藏水淹层测井解释. 首先介绍了该水淹层测井响应特征, 接着应用多项式趋势面分 析方法对测井数据进行标准化处理, 并选择测井资料齐全、质量可靠、有钻井取芯和录井、试油资料的井为关键井, 结合试油试采、岩芯分析资料建立测井解释模型 .结果表明: 胜坨油田沙河街组二段 1-3 砂组复杂断块油藏已经进 入高含水阶段, 水淹层发生明显的自然电位曲线基线偏移、地层电阻率降低、自然伽马降低、声波时差增大等现象;

选择沙二段顶部的高阻白云岩段( 厚度为

8 ~

12 m) 作为标准层进行标准化处理;

声波时差三次趋势面分析效果较 好, 拟合度达到

22 .6%, 平均校正量为

14 μ s/ m ;

T4j17 、T2-121 井取芯井段较长且收获率较高, 分析化验资料较丰 富, 测井资料齐全且质量较好, 能够反映沙二段 1-3 砂组复杂断块油藏储层特征, 被选为关键井;

建立泥质体积分 数、粒度中值、孔隙度、渗透率、含水饱和度等解释模型. 最后, 通过对水淹层的测井资料进行逐井处理、计算机逐 点或按层输出主要储层参数等

3 个方面检验解释模型, 定量评价了测井解释模型的应用效果. 结果表明: 测井解 释结果与岩芯物性和生产数据吻合较好, 获得了较为可靠的地区储层地质分析结果, 可为注水开发调整提供有效 的参考. 关键词:测井解释;

复杂断块;

水淹层;

沙河街组;

胜坨油田 中图分类号:P631.

8 文献标志码:A 文章编号:1672 -6561( 2010) 04-0355-08 Study on Log Interpretation for Water Flooded Layer of the Complex Fault Block Oil Reservoir in the Second Member of Shahejie Formation of Shengtuo Oilfield CHEN Ning-ning , YANG Shao-chun , HUA NG Jian-ting ( School of Geo -resources and In formation , China University of Petroleum , Dongying 257061, Shandong, China) Abstract: Based on the data of sealed core well, taking the typical complex fault block reservoir in Shengtuo Oilfield as an example, log interpretation model was built to interpret the w ell logging for w ater flooded layer of the complex fault block oil reservoir in the

1 -3 sandstone group of the Second Member of Shahejie Formation . Firstly , response characteristic of the w ater f looded layer w as int roduced ;

secondly, log data was standardized by the method of polynomial trend surface analysis ;

thirdly, the key w ell w ith complete log data, dependable quality , drilling core and logging, and test oil data was selected;

fourthly, log interpretation model w as built according to oil testing and extraction and drill core data.The results show ed that the complex fault block oil reservoir in the 1-3 sandstone group of the Second Member of Shahejie Formation of Shengtuo Oilfield had been in the stage of high w ater cut , baseline of self potential curve shifted, formation resistivity and natural gamma decreased , and acoustic time increased in w ater flooded layer ;