现代试井解释方法上机实习报告

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1、学号：201211111序号：11班11号现代试井解释方法上机实习报告姓名王老吉所属院（系）石油工程学院班级油工指导教师程厚贤2013 年 11 月 01 日试井解释报告一、测试目的： 运用试井资料，即测试过程中的产量和井底压力资料，结合其他资料，可以识别测试层 的类型，计算测试层和测试井的许多特性参数，从而估算测试井的完井效率、井底污染情况， 判断是否采取增产措施（如酸化、压裂），分析增产措施的效果，估算测试井的地层压力、 控制储量或原始地质储量、地层参数（有效渗透率等），判断测试井附近的油（气）层边界 情况以及井（层）间的连通情况等。二、基础数据我的序号是2班4 号，所以可算出：油层厚度：

2、h=7.8+4/10=8.2m孔隙度：0=0.2-4/10000=0.196油的粘度： u=1.6+4/100=1.64mpa.s关井前产量： q=2.84+4/10=3.24油藏和井的基本参数见表 2-1。表 2-1 油藏和井的基本参数参数名称数值参数名称数值B1.23/ r (m )w0.06p /( mPa s)1.64h/( m )&2/( C MPa 1)t1.16x10-3tp/(h)100e0.196q /(m3d) i3.24定油的属性见下图：转化后的数据见下表：t/hp /kPat/hp /kPat/hp /kPa100.01660308.16100.431606771.98

3、102.9880014797.97100.03320581.16100.464807155.97103.3200014926.20100.04980820.39100.498007531.70104.1500015105.44100.066401076.15100.581008343.12104.9800015199.20100.083001298.14100.664009102.84106.6400015310.20100.099601486.35100.747009751.56108.3000014387.41100.116201725.57100.8300010332.73109.960

4、0015472.89100.132801964.79100.9130010827.72111.6200015549.42100.149402237.79100.9960011306.16113.2800015574.492100.166002596.28101.0790011715.66114.9400015592.16100.199203185.72101.1620012083.11119.9200015652.14100.232403859.95101.3280012714.60118.2600015617.67100.265604423.88101.4940013201.32119.92

5、00015652.14100.298804918.87101.6600013568.747121.5800015694.88100.332005439.37101.9920014106.50123.2400015694.88100.365205900.57102.3240014448.45100.398406361.78102.6560014651.82在试井解释软件中将上表中的数据输入到软件中，见图2-1，图 2-2,图 2-3，图 2-4 图 2-5。TimehrCum TimehrPressurekPaGas Rate103m3/d15694.88100.0166308.16100.03

6、32581.16100.0498820.39100.06641076.15100.08301298.14100.09961486.35100.11621725.57100.13281964.79100.14942237.79100.16602596.28100.19923185.72100.2324100.23243859.954图 2-114100.2656100.26564423.8815100.2988100.29884918.8716100.3320100.33205439.3717100.3652100.36525900.5718100.3984100.39846361.781910

7、0.4316100.43166771.9820100.4648100.46487155.9721100.4980100.49807531.7022100.5810100.58108343.1223100.6640100.66409102.8424100.7470100.74709751.5625100.8300100.830010332.7326100.91301 图 2-210827.72Time Cum Time Pressure Gas RatehrhrkPa 10-m/d1D0.996D11306.16101.079011715.66101.162012083.11101.328012

8、714.60101.494013201.32101.660013668.75101.992014106.50102.324014448.45102.656014651.82W2.988D14797.97W3.320D103.320014926.20104.1500图2-3104.160015105.44W4.980D15199.20106.640015310.20108.3DD014387.41109.960015472.89111.620015549.42113.280015574.49114.940015592.16118.260015617.67119.920015652.14121.5

9、80015694.88123.240015694.88图2-4匚LPressure Gas Rate Oil Rate Water RatekPam/dm/d15694.883.240308.16581.16.820.391076.151298.141486.351725.571964.79102237.79112596.28123185.72133859.95图2-5三、解释结果1. 常规方法压力恢复阶段条形散点图（见下图）早期纯井筒储集阶段（见下图）C由上图知，无量纲井筒储集系数D=304.880。径向流动阶段（见下图）P由径向流动阶段可知：=15941.07KPa,渗透率=4.959MD

10、,地层系数Kh=40.664mD.m,表皮系数=38.272。2.典型曲线拟合根据常规解释方法(K=4.959mD, S=38.272, CD=304.880 )中确定的参数范围，设定相应参数k, S, CD值进行模拟检验，其中参数的值见下图:典型曲线拟合结果：压力、压力导数与无量纲时间曲线见下图：图 3-2-1无因次霍拉曲线拟合图，见下图：历史拟合曲线图，见下图：Vertical Model14000X-w、LX；J丄I 歯I2000018000160AA1400012000800060如4000200030609012Time, lir150180图 3-2-3样板曲线拟合结果见图3-2-

11、4：Vertica Model亠-亠-II-edz ” 勺$二勺图 3-2-43、一致性检验由常规分析方法和图版拟合方法计算的参数值见表2-3-1表 3-3-1 结果比较渗透率k (mD)表皮系数s无量纲井筒储集系数CD常规方法4.95938.272304.880模拟检验法6.06851.467175.88相对误差18.2825.6373.34四、结论1、常规分析方法主要以均质各向同性介质油藏的渗流理论为基础，方法的优点是理论 完善，原理简单，易于应用。但也存在不可避免的缺点，如要求测试时间较长，从而影响生 产,无法准确估计井筒储存的特性等。而现代试井解释方法在一定程度上克服的常规方法存 在的

12、问题，使得结论更加的精确。2、根据常规试井解释和模拟检验法可以确定该油藏是均质油藏。由拟合结果 k=6.068mD 可知，该地层的渗透性属于高等。因表皮系数s 0，所以该井属于不完善井，在井壁附近 的油层可能受到了污染，因此，可采用酸化或压裂等措施来改善油井完善性，从而使井变成 完善井。井筒储集系数误差较大，可能是由于测井工作人员记录数据不全导致。3、由试井软件生成一份报告如下：Vertical Oil Well ModelCase Name : rtical tufodelModel PdiametersPermeability (k)6.078mD/apparent Wellbore St

13、orage Dim. (C3q)0.00Wellbore Storage Constant Dim. (Cq)175.88Storage Pressure Param Dim. (Cp)0.000Inter Porosity Coeff (入)1.000000Storativity Ratio (co)1.000000Skin 51.467Formation PdiametersNet Pay (h)8.20Total Porosity ($)19.60Gas Saturation (Sg)Water Saturation ($QOil Saturation ($0)Wellbore Radi

14、us (rw)Formation Temperature (T)Formation Compressibility (Cf)Total Compressibility (q)Oil Compressibility (c0)0.0020.0080.000.0648.95.33380e-71.16000e-6Fluid PropHtiQS1.82776e-5Oil Formation Volume Factor (Bo)1.230Oil 4scosrty1.640kPa1kPa1Solution Gas Ratio (Rs)中I极品五笔2山圈640.876Gas Gravity (G)0.650R

15、eservoir Length 傀)304800.00mReservoir Width (Ye)304800.00mActive Well A 血)mActive Well A (Yw)mObservation Well A (厶冷)mObservation Well A (厶丫。)mProduction and PressureFinal Flow RateFinal feasured PressureInitial Pressure (pj)Average Bror3.74015694.8815694.88Svntlwsis ResultsSynthetic Initial Pressur

16、e (pj)Shut-in Pressure at Specified Time9.1015694.8815693.30m?/dkPakPakPakPaPressure Drop Due To SkinFlow Efficiency (FE)14349.68kPa0.128kPa1Damage Ratio (DR)7.836mPa.sForecastsSpecified Flowing Pressure (pwfs)308.16kPa3 tfonth Constant Rate3.409111 rU6 tfonth Constant Rate3.390m/dSpecified Forecast Time12.00month