油田开发地质实验1.docx

1、油田开发地质实验1油气田开发地质学上机实习一（开发储层评价）学院：地球科学与工程学院班级： 勘探1003班姓名： 弋技轩学号： 201011010302 日期： 2013-05-01一、实习目的：深化对储层物性、层内非均质性以及油藏特征的认识，掌握基础资料分析原理方法以及基本图件的编制分析。二、实习内容：储层物性、层内非均质性分析。三、实习要求：1.绘制孔隙度、渗透率分布频率直方图及累积频率曲线图，分析孔渗分布特点（最小、最大、平均、分布主频）；2.绘制孔隙度与渗透率关系散点图，分析其相关关系；3.绘制含水饱和度与孔隙度和渗透率关系图，分析孔、渗对饱和度的影响；4.绘制孔、渗与碳酸盐含量关系图

2、，分析孔渗影响因素5.绘制渗透率剖面图，分析其韵律组合特点，确定高渗段位置。6.计算渗透率非均质性：（1）计算渗透率变异系数（）式中平均渗透率； 单个样品渗透率值渗透率变异系数0，可用以初步评估层内非均质性，其值愈小反应储层越均质。一般0.5 为均匀；0.50.7为为较均匀；大于0.7为不均匀。（2）计算渗透率级差（）：渗透率级差是单砂层中最大渗透率值与最小渗透率值的比值即 =；式中最大渗透率值；最小渗透率值渗透率级差反应渗透率变化的绝对幅度大小，变化范围为1，当其值为1时均质性强，值越大非均质性越强（3）计算突进系数（）：=突进系数大于1，其值越大，说明渗透率变化大，注入剂易沿最高渗透率段突

3、进。四、实习资料：某油田某井层岩芯物性系统分析数据（附表1）附表1 某油田某井层岩芯物性分析数据表野外编号井深(米）含油饱和度（%）含水饱和度（%）孔隙度（%）渗透率（MD)碳酸盐（%)S-11197.5523.329.514.80.5S-21197.6921.832.8120.3S-31197.8745.237.75.60.2S-41198.133.80.0133.7S-51198.322336.914.11S-61198.475.251.413.60.3S-71198.5532.45913.40.5S-81198.691547.513.50.3S-91198.811.861.313.40.

4、3S-111199.6411.80.0515.5S-101199.6416.952.912.10.3S-121200.3110.60.0122S-131200.929.20.0119.4S-141201.642.70.0131.4S-151201.8331.136.86.30.1S-16120219.733.212.50.3S-171202.122232.613.20.3S-181202.3220.338.812.50.3S-191202.4716.434.112.90.3S-201202.556.950.112.70.3S-211202.672438.911.40.2S-221202.811

5、84410.80.2S-231202.9421.434.910.40.2S-241203.0620.140.910.20.2S-251203.3830.0138.3S-261203.6823.934.911.60.3S-271203.7554.83.310.90.4S-281203.8932.522.312.51S-291204.0535.222.1120.8S-301204.1424.429.6120.5S-311204.330.622.913.11.2S-321204.4732.821.3141.2S-331204.5428.423.713.71.4S-341204.6923.129.61

6、2.50.7S-351204.8323.52812.80.5S-361204.992130.112.10.4S-371205.1318.33412.60.7S-381205.3724.836.312.40.7S-391205.5630.521.813.93.9S-401205.7128.126.112.80.8S-411205.8427.334.711.70.5S-421205.9929.125.212.90.5S-431206.1127.723.913.81.3S-441206.223919.1121.6S-451206.3731.339.280.1S-461206.5129.642.38.

7、10.3S-471206.7129.320.713.91.8S-481206.8435.89.113.43.5S-491206.963119.613.94.5S-501229.532426.511.21.9S-511229.6714.926.910.61.8S-521229.7846.97.713.42.2S-531229.9432.626.611.61.2S-541230.113.739.1110.4S-551230.2424.626.9120.6S-561230.3814.249.26.10.2S-571230.5254.729.34.10.1S-581230.6448.718.23.40

8、.1S-591230.832.417.912.40.4S-601230.9717.427.411.20.4S-611231.1526.126.512.60.4S-621231.3124.321.311.70.6S-631231.4619.930.411.80.4S-641231.6128.823.511.70.4S-651231.762821.212.10.4S-661231.9133.217.412.70.5S-671232.0515.267.53.90.1S-681232.213330.24.60.1S-691232.4113.435.88.80.1S-701232.5929.542.35

9、.50.1S-711232.7731.424.812.70.6S-721233.012825.412.80.6S-731233.1517.734.712.80.5S-741233.3210.60.46.5S-751233.511.30.69.4S-761233.73100.59.2S-771233.91735.913.90.5S-781234.0721.53113.10.6S-791234.216.737.312.90.7S-801234.3650.85.812.40.5S-811234.523319.612.50.6S-821234.6729.220.312.40.4S-831234.845

10、1.43.18.40.2S-841235.0236.543.54.80.1S-851235.1926.82890.5S-861235.3113.239.4130.6S-871235.4616.631.512.50.3S-881235.6425.625.512.40.8S-891235.814.137.4121S-901235.9712.334.414.21.4S-911236.116.930.313.51.7S-921236.2420.532.78.94.2S-931236.3712.334.411.70.7S-941236.494.50.0128S-951236.654.50.0132S-9

11、61236.8619.926.412.40.6S-97123729.816.413.21.1S-981237.1210.135.314.41.7S-991237.2613.330.813.31.2S-1001237.4413.632.312.51.3S-1011237.61328.113.41.8S-1021237.7619.728.712.91.6S-1031237.9214.126.212.61.6S-1041238.135.717.510.20.9S-1051238.340.0134.1S-1061238.4221.429100.2S-1071238.5727.419.110.80.2S

12、-1081238.7510.823.813.11.4S-1091238.8938.17.212.81.4S-1101239.0525.720.711.80.3S-1111239.2240.0137.7S-1121239.4329.828.26.90.2S-1131239.5831.815.3111.2S-1141239.7611.528.212.41.2S-1151239.8812.131.211.20.4S-1161240.03934.411.20.5S-1171240.239.83511.20.4S-1181240.432.548.29.80.3S-1191240.6124.640.960

13、.2S-1201240.81044.3110.3S-1211241.03142.291.7S-1221241.21042.410.30.8S-1231241.328.122.410.60.3S-1241241.448.329.89.10.1S-1251241.6640.315.470.5S-1261242.0419.835.34.20.1S-1271242.2422.1365.80.1五、实习结果及分析：1、孔隙度、渗透率分布频率直方图及累积频率曲线图，分析孔渗分布特点（最小、最大、平均、分布主频）；表2 孔隙度分布频率统计表分布区间样品数量分布频率累计频率0-2 0002-4 75.47 5

14、.47 4-6 107.81 13.28 6-8 53.91 17.19 8-10 118.59 25.78 10-12 3628.13 53.91 12-14 5442.19 96.09 14-16 43.13 99.22 128100图1孔隙度频率分布直方图分析：由图1可以看出，该井的孔隙度分布在4-16这个区间,但是大部分集中分布在10到14这个区间,孔隙度等级属于中等，岩层物性中等。 表3渗透率分布频率统计表分布区间样品数量频率累计频率0.05107.8740167.8740160.1129.44881917.322830.2118.66141725.984250.31713.3858

15、339.370080.41310.2362249.60630.51411.0236260.629920.697.08661467.716540.753.93700871.653540.843.14960674.80315143.14960677.9527622318.1102496.06299310.78740296.85039421.57480398.4252521.574803100 图2渗透率分布频率直方图分析：从图2可以看出，该井的渗透率分布在0.05-5mD，而渗透率大部分集中在0.05-1mD，渗透性差，属于低渗透储集层。2、 孔隙度与渗透率关系散点图，分析其相关关系。图3孔隙度与

16、渗透率关系散点图分析：从图3可看出，随着孔隙度的增大，渗透率也逐渐增大，从图可以看出孔隙度和渗透率存在指数关系增长，通过excel绘图并得到了其经验公式：K= 0.01e0.32x。3、 含水饱和度与孔隙度和渗透率关系图，分析孔、渗对饱和度的影响。图4 渗透率与含水饱和度散点关系图图5 孔隙度与很水饱和度散点关系图分析：由图4和图5可看出，随着含水饱和度的增加，岩石的孔隙度和渗透率都逐渐降低，求得经验公式： 渗透率与含水饱和度： K= 1.2993e-0.0031Sw； 孔隙度与含水饱和度：= -0.0484Sw+12.706；4、 孔、渗与碳酸盐含量关系图，分析孔渗影响因素。图6孔隙度与碳酸

17、盐岩散点关系图图7 渗透率与碳酸盐岩散点关系图分析：由图6和图7可以看出随着碳酸盐岩含量增加，岩石的孔隙度和渗透率都逐渐降低，求得经验公式为：孔隙度与碳酸盐岩：y=-0.29x+13.97渗透率与碳酸盐岩：y=0.6519e-0.1293x5、 渗透率剖面图，分析其韵律组合特点，确定高渗段位置。分析：由渗透率剖面图可以看出高渗层段为1207至1230 m6、计算渗透率非均质性：（1）计算渗透率变异系数（）式中平均渗透率 ；单个样品渗透率值由excel计算得到K平均值=0.6995，Kv=1.1285大于0.7，储层不均匀。（2）计算渗透率级差（）：渗透率级差是单砂层中最大渗透率值与最小渗透率值的比值即 =；式中最大渗透率值；最小渗透率值由excel计算得到K级差=450，渗透率级差反应渗透率变化的绝对幅度大小，变化范围为1，当其值为1时均质性强，值越大非均质性越强，所以该砂层非均质性极强。（3）计算突进系数（）：=由excel计算得到K突进=6.4329大于1，说明渗透率变化大，注入剂易沿最高渗透率段突进。,