油藏工程课程设计概述.docx

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1、油藏工程课程设计重庆科技学院 二一六年十一月目录1 油田概况12 地层特征13 构造特征24 沉积特征25 储层特征35.1 岩石学特征35.2 物性特征46 温压系统67 流体性质67.1 原油性质67.2 地层水性质68 渗流物理性质79 测试情况810 相关经济参数8I1 油田概况LJ 油田位于 G 省 QL ftft前地带 JX 盆地南部 LJ 隆起带，区块拐点坐标如 表 12.1 所示。油田内地表为丘陵，地面平均海拔 900m，呈南高北低的冲积缓坡， 地表高差较小，自然条件较差。该油田属大陆性温带干旱气候，干燥多风，每年 46 月为风季，年平均气温 6，平均降水 157.2mm，多集

2、中在 68 月，偶有 ft洪爆发。油田内水电、通讯设施较为完善，312 国道穿过市区，沙石公路直达 井场，交通便利。表 12.1 区块拐点坐标拐点X 坐标Y 坐标11700000044000002170025004400000317002500440300041700000044030002 地层特征LJ 背斜隆起地区自上而下钻遇的地层主要有第三系 SL 河群和 BY 河群，与 下伏白垩系红色含砾泥岩呈不整合接触。第三系 BY 河组的砂岩是 LJ 油田的良 好储层，其中发育的泥岩是良好的区域盖层。根据钻井所揭露的地层岩性、电性及泥岩隔层的特征，将油田的油层段与油 层进行划分与对比，划分出 1

3、套含油地层（L 层），3 个砂层组 9 个小层（表 12.2）。表 12.2LJ 油田油层命名表油层组砂层组单砂层单砂层个数LL1123L1 、L1 、L13L21234L2 、L2 、L2 、L24L312L3 、L3293 构造特征L 油藏位于 LJ 背斜带的中部，是该带的一个主要构造。该构造发育在第三 系，其总体形态是走向为北西-南东方向的穹隆背斜，长短轴比为 2.4，地层倾角 一般不超过 10，个别地段受构造影响岩层倾角变化大。该区发育两条断层 F1、 F2，延伸长度分别为 2.8km、1.5km，断距最大达 70m。总体属于地质构造简单 类（图 12.1）。0200400600800

4、1000m1:19622W2W1W5W3W41.7E+71.70005E+71.7001E+71.70015E+71.7002E+71.70025E+71.7E+71.70005E+71.7001E+71.70015E+71.7002E+71.70025E+7图 12.1 L 油藏顶面构造图4 沉积特征L 油藏为河流和三角洲沉积体系，主要发育辫状河、三角洲平原和三角洲前 缘等沉积亚相（表 12.3）。表 12.3L 油藏沉积体系划分表沉积体系（相）亚相微相发育特征识别标志分布状况河 流辫状河河道砂坝具有宽广的河道，泛 滥平原泥质沉积不 发育砂岩粒度粗，含砾，砂体 厚度大。L3泛滥平原三 角 洲

5、三角洲 平原分流河道研究区以发育河道 及其堤泛沉积为主砂泥岩互层，多夹煤线， 发育槽状、板状交错层理， 含植物和淡水动物化石， 见虫孔和植物根，河道间 沼泽发育。L2天然堤决口扇河漫滩三角洲 前缘水下分流河道有多次级分流汇合 作用三角洲前缘沉积由中-细砂 岩及粉砂岩组成，并夹泥 岩，见槽状、板状交错层 理、平行层理和沙纹交错 层理，常具滑动变形层理、 包卷层理和水平虫迹，含 介形虫、叶肢介、瓣鳃类、 鱼类化石以及植物化石碎片L1河口坝不太发育，常被后期 水下分流河道冲刷远砂坝三角洲前缘向湖延 伸的末端，多为厚度 不大粉砂岩席状砂分布面积广泛，厚度 较薄，砂质较纯水下天然堤属于水下堤泛沉积， 常

6、网状水下分流河 道分隔水下决口扇分流间湾5 储层特征5.1 岩石学特征L 油藏储层的岩石碎屑成分，石英占 80，变化范围为 7090；长石 与岩屑各占 10，长石变化范围为 515，岩屑变化范围为 525。平 均粒径为 0.070.187mm，颗粒磨圆次棱次圆状，标准偏差为 1.4321.680， 颗粒分选较差。岩石的成分成熟度和结构成熟度较高。胶结物的成分主要为泥质和钙质。胶结物含量变化范围为 515，泥质 含量为 5.911，碳酸盐含量很少。泥质胶结物中粘土矿物蒙脱石相对含量为 41.2，伊利石为 46.8，高岭石为 12。纵向上 L3 层钙质含量高，L1 层钙 质含量少，泥质含量由东向西

7、增加。L3 层发育钙质结核，其它层较少，所见结 核有一定的滚圆度，是经过短距离搬运后沉积的钙砾。5.2 物性特征根据测井解释结果，探井 W1W5 井的储层厚度、孔隙度、渗透率等数 据如表 12.4表 12.8 所示。其中，孔隙度变化范围 12.3%23.5%，平均 17.9%； 渗透率变化范围 47.4mD134.6mD，平均 81.8mD。表 12.4 W1 井测井解释（KB=920m）层号层位顶深,m底深,m储厚,m解释结论孔隙度POR,%渗透率PERM,mD11L11915.21919.24.0油层17.987.922L11926.91929.93.0油层17.875.733L11936

8、.91941.04.1油层14.862.141L21951.01953.42.4油层22.4124.952L21963.21966.53.3油层16.568.663L21979.91982.62.7油层18.183.474L21992.11997.25.1油层16.672.881L32012.42018.96.5油层20.1102.992L32026.82030.53.7油层21.6105.4表 12.5 W2 井测井解释（KB=910m）层号层位顶深,m底深,m储厚,m解释结论POR,%PERM,mD11L12158.42162.84.4油层20.7107.822L12177.62181.4

9、3.8油层1978.833L12193.92198.04.1油层16.871.041L22210.92214.43.5油层22.9134.652L22224.82229.24.4油层17.673.763L22242.42245.63.2油层20.090.474L22258.72264.25.5油层17.984.081L32281.92289.67.7油水同层21.8109.392L32302.92306.94.0油水同层23.5131.9表 12.6 W3 井测井解释（KB=890m）层号层位顶深,m底深,m储厚,m解释结论POR,%PERM,mD11L12006.92010.94.0油层17

10、.278.622L12020.72024.03.3油层17.671.833L12032.42036.94.5油层14.058.741L22046.82049.22.4油层21.6106.152L22055.12058.02.9油层15.865.163L22069.22071.22.0油层18.588.074L22081.02085.34.3油层16.164.681L32100.22105.14.9油层19.697.792L32112.32115.63.3油层21.4102.2表 12.7 W4 井测井解释（KB=908m）层号层位顶深,m底深,m储厚,m解释结论POR,%PERM,mD11L1

11、2234.52237.93.4油层15.363.522L12246.92249.62.7油层17.069.733L12256.92261.34.4油层12.748.241L22269.12272.02.9油层21.197.352L22278.62282.03.4油水同层14.153.763L22290.42292.82.4油水同层17.274.474L22299.72303.43.7油水同层15.257.381L32318.22323.65.4油水同层18.177.792L32333.22334.51.3油水同层20.492.7表 12.8 W5 井测井解释（KB=915m）层号层位顶深,m底

12、深,m储厚,m解释结论POR,%PERM,mD11L12131.52135.03.5油层15.063.922L12143.12145.62.5油层16.669.333L12152.22156.34.1油层12.347.441L22162.22163.31.1油层21.1107.452L22173.12175.72.6油层14.255.763L22187.52189.52.0油层16.070.774L22196.92201.74.8油层14.555.781L32215.52220.44.9油层17.985.292L32226.52228.82.3油层19.992.46 温压系统W1W5 井均进行

13、了温度、压力测试，如表 12.9 所示。表 12.9 W1 井温度、压力测试数据井名垂深 H, m温度，压力，MPaW11928.152.820.6W22178.258.422.8W32021.954.921.4W42247.960.023.4W52143.957.622.50.8357 流体性质7.1 原油性质根据 W1、W3、W5 井原油样品分析结果，该区地面脱气原油密度 0.8320.837 g/cm3，地层原油粘度 3.183.25mPa.s，原始条件下原油体积系数 1.0615，原油压 缩系数 1.2010-3MPa-1，原始溶解气油比 24.54m3/t。7.2 地层水性质L 油藏

14、地层水总矿化度 63700mg/L，水型 CaCl2 型。主要离子组合以 Cl-Na+为主，属有利于油气聚集的离子组合类型。油水处于封闭的水文地球化学环境， 为较高矿化度封闭型油田水型（表 12.17）。表 12.17 地层水性质项目水型总矿化度（mg/L）Na+K+（mg/L）Ca2+（mg/L）Mg2+（mg/L）Cl-（mg/L）SO 2-4（mg/L）HCO -3（mg/L）原始CaCl263700528129398283567191768777111680315415091265208 渗流物理性质W1 井 3 个样品进行了油水相渗及毛管压力测试，结果如表 12.18、表 12.19

15、 所示。其中，束缚水饱和度 26%30%，水驱残余油饱和度 22%25%，残余油下 水相相对渗透率 0.3150.331。表 12.18 油水相渗测试结果样品 1Sw0.30.450.550.60.650.70.75Kro10.3470.1280.0670.0190.0040Krw00.0210.0760.120.1770.2470.331样品 2Sw0.280.450.550.60.650.70.78Kro10.3410.1330.0770.0290.0030Krw00.0110.0480.0810.1270.1880.323样品 3Sw0.260.450.550.60.650.70.77K

16、ro10.3620.1490.0880.0440.010Krw00.0150.0550.090.1370.20.315表 12.19 毛管压力测试数据样品 1样品 2样品 3SwPc, MPaSwPc, MPaSwPc, MPa0.290.2230.280.2030.250.2010.450.0400.450.0360.440.0360.550.0190.550.0170.540.0170.600.0140.600.0130.610.0130.650.0100.650.0090.640.0090.700.0080.700.0070.710.0070.750.0060.780.0050.790.

17、0059 测试情况W1 井于 2014 年 8 月 1 日进行了试油，射孔井段 1915.2-1919.2m、 1926.9-1929.9m、 1936.9-1941.0m， 测试日产油 40.0m3 ， 不产水， 井底流压 11.40MPa。W2 井于 2014 年 8 月 5 日进行了试油，射孔井段 2158.4-2162.8m、 2177.6-2181.4m、 2193.9-2198.0m， 测试日产油 30.0m3 ， 不产水， 井底流压 11.53MPa。W3 井于 2014 年 9 月 1 日进行了试油，射孔井段 2006.9-2010.9m、 2020.7-2024.0m、 20

18、32.4-2036.9m， 测试日产油 40.0m3 ， 不产水， 井底流压 11.33MPa。W4 井于 2014 年 9 月 5 日进行了试油，射孔井段 2234.5-2237.9m、 2246.9-2249.6m、 2256.9-2261.3m， 测试日产油 30.0m3 ， 不产水， 井底流压 11.15MPa。W5 井于 2014 年 9 月 7 日进行了试油，射孔井段 2131.5-2135.0m、 2143.1-2145.6m、 2152.2-2156.3m， 测试日产油 40.0m3 ， 不产水， 井底流压 10.94MPa。10 相关经济参数钻井成本 2350 元/米，地面建

19、设工程投资 300 万元/口，采油成本 600 元/吨， 原油销售价格 45$/bbl。其它相关政策、法规、条例等按照国家或油气行业颁布 的最新版本执行。附表 1 构造等值线矢量化数据XYIDZ17000000.004401327.541-155017000000.074401327.341-155017000001.034401324.831-155017000005.724401312.441-155017000016.904401283.041-155017000032.004401243.841-155017000048.484401202.521-155017000065.98440

20、1161.671-155017000083.944401123.761-155017000098.274401095.791-155017000104.484401084.101-155017000106.154401080.901-155017000231.604401146.602-150017000222.714401164.872-150017000209.754401191.642-150017000192.424401227.382-150017000173.974401265.182-150017000155.264401303.072-150017000136.48440134

21、0.922-150017000118.144401378.972-150017000100.994401417.532-150017000085.244401456.712-150017000070.314401496.232-150017000055.874401535.942-150017000041.724401575.772-150017000027.804401615.462-150017000014.754401652.972-150017000005.004401681.072-150017000000.904401692.902-150017000000.064401695.3

22、02-150017000000.004401695.492-150017000390.384401228.413-145017000381.234401246.513-145017000367.754401272.433-145017000349.744401307.053-145017000330.654401343.703-145017000311.394401380.483-145017000291.984401417.183-145017000272.474401453.833-145017000253.184401490.583-145017000234.484401527.643-

23、145017000216.434401565.023-145017000198.684401602.543-145017000180.924401640.073-145017000163.074401677.563-145017000145.244401715.053-145017000127.774401752.703-145017000111.024401790.683-145017000094.884401828.923-145017000079.024401867.293-145017000063.344401905.733-145017000047.864401944.253-145

24、017000032.554401982.643-145017000018.124402018.893-145017000007.314402046.033-145017000002.764402057.463-145017000001.844402059.793-145017000001.764402059.963-145017000508.124401293.094-140017000508.024401293.254-140017000500.744401305.704-140017000486.404401330.294-140017000467.504401363.274-140017

25、000448.144401398.554-140017000429.504401434.444-140017000411.514401470.654-140017000394.604401507.344-140017000379.484401544.794-140017000365.474401582.724-140017000351.734401620.764-140017000337.814401658.744-140017000323.524401696.594-140017000309.014401734.344-140017000294.524401772.114-140017000

26、280.314401809.994-140017000266.524401848.024-140017000252.974401886.134-140017000239.514401924.284-140017000226.274401962.504-140017000213.384402000.854-140017000200.734402039.274-140017000188.454402077.794-140017000177.284402116.624-14001017000167.884402155.914-140017000159.634402195.494-1400170001

27、52.424402235.244-140017000146.844402275.244-140017000142.684402315.444-140017000139.134402355.734-140017000136.034402396.044-140017000134.204402436.394-140017000134.474402476.774-140017000136.344402517.114-140017000140.264402557.214-140017000147.404402596.854-140017000156.984402636.004-140017000169.

28、404402674.114-140017000186.414402710.214-140017000207.904402743.784-140017000233.964402773.644-140017000264.864402798.424-140017000299.724402817.714-140017000337.044402831.874-140017000376.084402840.934-140017000415.964402846.674-140017000456.154402849.964-140017000496.504402850.914-140017000536.854

29、402849.774-140017000577.104402846.404-140017000617.214402841.474-140017000657.174402835.344-140017000696.924402828.004-140017000736.374402819.274-140017000775.504402809.134-140017000814.344402797.884-140017000852.834402785.544-140017000890.944402772.114-140017000928.264402756.884-140017000964.454402

30、739.084-140017000999.944402719.734-140017001034.934402699.504-140017001069.184402678.084-140017001102.714402655.514-140017001135.644402632.054-140017001167.834402607.614-140017001199.464402582.424-14001917001231.004402557.094-140017001262.784402532.074-140017001294.744402507.284-140017001326.5144024

31、82.264-140017001357.774402456.614-140017001388.594402430.414-140017001419.084402403.834-140017001449.164402376.804-140017001478.744402349.224-140017001507.674402320.994-140017001535.574402291.784-140017001562.554402261.674-140017001589.034402231.104-140017001615.184402200.234-140017001641.034402169.

32、134-140017001666.544402137.744-140017001691.324402105.804-140017001715.184402073.164-140017001738.564402040.154-140017001761.724402007.224-140017001783.604401976.124-140017001799.994401952.854-140017001806.894401943.044-140017001808.294401941.054-140017001808.404401940.904-140017000608.684401343.265

33、-135017000608.584401343.415-135017000600.804401355.515-135017000585.464401379.385-135017000565.124401411.355-135017000544.304401445.605-135017000525.084401480.925-135017000507.664401517.215-135017000491.204401554.015-135017000475.394401591.095-135017000460.534401628.565-135017000446.454401666.345-13

34、5017000432.664401704.235-135017000418.764401742.095-135017000404.394401779.765-135017000389.344401817.165-135017000373.954401854.445-135017000358.724401891.775-135017000344.224401929.385-135017000330.774401967.385-135017000317.894402005.595-135017000305.384402043.925-135017000293.884402082.525-13501

35、7000284.214402121.605-135017000275.774402161.015-135017000268.134402200.585-135017000261.834402240.355-135017000257.324402280.375-135017000254.004402320.525-135017000252.114402360.695-135017000252.844402400.815-135017000256.314402440.855-135017000262.054402480.615-135017000270.834402519.695-13501700

36、0283.764402557.465-135017000301.804402592.815-135017000325.644402624.175-135017000354.944402650.045-135017000389.254402668.945-135017000426.834402681.495-135017000466.044402689.035-135017000505.964402692.695-135017000546.164402693.365-135017000586.394402691.885-135017000626.564402688.835-135017000666.614402684.525-135017000706.374402678.425-135017000745.794402670.245-135017000784.884402660.505-135017000823.594402649.36