延863井山2层压裂施工总结

受 控 鄂尔多斯盆地伊陕斜坡延863井山2层压裂施工总结（机械分层）陕西延长石油（集团）有限责任公司油气勘探公司天然气勘探开发部2014年9月9日请预览后下载！鄂尔多斯盆地伊陕斜坡延863井山2层压裂施工总结（机械分层） 编 写： 张洪波审 核： 栾福刚 施工单位：北京奥瑞安能源技术开发有限公司 施工日期：2014年9月9日请预览后下载！目录一、基础数据11、钻井基本数据12、录井岩性和油气显示13、测井综合解释成果24、射孔方案2二、施工工艺过程21、施工前准备22、山2层压裂施工过程3三、压裂施工数据及曲线分析3四、综合评价51、压裂液评价52、压裂工艺评价5五、结论及建议51、结论52、建议5六、附件7附图1、延863井山2层压裂管柱及井身结构示意图7附表1、延863井山2层每分钟压裂施工数据表8附图2、延863井山2层压裂施工曲线11请预览后下载！一、基础数据1、钻井基本数据表1-1 钻井基本数据构造位置鄂尔多斯盆地伊陕斜坡地理位置陕西省延安市延川县永坪镇冯家坪乡寺村南约1Km处井 别详探井钻井队开钻日期2014-04-04完钻日期2014-05-30完井日期2014-06-06井位横坐标(Y)19306336.92地面海拔(m)1438.84联入(m)井位纵坐标(X)4076051.77设计井深(m)完钻井深(m)3796.00完钻层位马家沟组人工井底(m)3775.50目前人工井底(m)3775.50最大井斜数据：井深(m)×井斜角(°)×井斜方位(°)3780.00×1.98°×126.58°新(旧)井新井程序钻头尺寸(mm)钻井深度 (m)套管外径(mm)套管下深(m)套管壁厚(mm)套管内径(mm)套管钢级套管出地高（m）水泥返深（m）表层311.1495.54244.5495.548.94226.62J5593.50气层215.93796.00139.73790.809.17121.36TP80S54.00分级箍位置(m)1918.14-1918.81分级箍通径(mm)118套管头限压 (MPa)35短套管位置(m)3140.28-3143.75，3451.75-3455.38，3582.84-3586.34，3671.94-3675.41气层附近套管接箍数据（m）3550.78，3561.44，3571.91，3582.84，3586.34，3596.97，3607.59，3618.50，3629.31，3640.13，3650.53，3661.28固井质量射孔段上下50米固井质量合格完井试压质量合格2、录井岩性和油气显示表1-2 延863井录井油气显示情况表层段岩性电测井段m显示厚度m密度g/cm3孔隙度%渗透率10-3m2含水饱和度%全烃气测值录井解释基值%峰值%山2灰黑色泥岩3603.3-3607.64.3/0.70657.0776气层请预览后下载！3、测井综合解释成果表1-3 测井解释数据表层位砂体井段(m)砂体厚度(m)电测井段m显示厚度m电阻率m声波时差s/m补偿密度g/cm3孔隙度%渗透率10-3m2含水饱和度%电测解释山23603.3-3607.64.33603.3-3607.64.368.3227.42.5310.30.93445.3/4、射孔方案表1-4 射孔数据表层位射孔井段(m)厚度(m)枪型弹型孔密(孔/m)相位孔数射孔方式山23604-36073SYD102SYD127（复合弹）1660º48电缆传输射孔二、施工工艺过程1、施工前准备（1）压裂设备情况2000型主压泵车4台，混砂车1台，斯堪尼亚NP 360液氮泵，系统最大许用工作压力(MAWP) 105 MPa (15,000 psi)，高压管路静力105 MPa (15000 psi)；仪表车1台，自备吊管汇车1台，700型水泥车1台。所有设备认真检查运转正常，各仪表、仪器校验合格，性能良好。其它附件及高、低压管汇试压合格。（2）现场压裂材料准备情况表2-1 液罐、压裂液及液氮准备一览表名 称活性水用水(m3)原胶液用水(m3)30m3液罐(个)50%交联液(m3)液氮(m3)数量6616690.911请预览后下载！表2-2 支撑剂类型、规格及数量支撑剂名称粒径(mm)视密度(g/cm3)体积密度(g/cm3)准备量(m3)中密度陶粒0.4250.85（20-40目）3.11.7216粉陶0.2240.4253.11.660.6（3）压裂管柱压裂管柱结构（自下而上）：34mm孔径节流器+73mm油管3根+Y344-114封隔器+KDB-114水力锚+ 安全接头（不带反洗循环阀）+73mm油管串至井口。压裂管柱结构及井身结构示意图见附图1。2、山2层压裂施工过程（1）地面高压管汇试压70MPa，不刺不漏，试压合格。（2）低替阶段：低替排量为0.3m3/min，平均压力为1.9Mpa。（3）前置液阶段：以2.4-2.6m3/min的排量注入前置液42.3m3，平均砂比为5%。（4）携砂液阶段：以2.6m3/min的排量注入携砂液净液量90.9m3，加砂16m3，平均砂比17.6%，平均施工压力57.8MPa。（5）顶替液阶段：以2.6m3/min的排量注入顶替液10.8m3。（6）施工过程中，全程伴注液氮，液氮排量0.24 m3/min，入地总量为9.78m3。（7）本次施工严格按照甲方要求执行，施工达到设计要求。（8）施工安全环保措施落实到位，做到了安全施工和环境保护。三、压裂施工数据及曲线分析山2层压裂施工数据见表3-1和附表1，施工曲线见附图2，从施工曲线来看，地层破裂压力明显；随后提高施工排量至2.4m3/min，并伴注液氮，施工压力较高，请预览后下载！随后泵注完毕前置液后按照设计要求加砂，最终加砂量达到16.6 m3。施工压力平稳缓慢下降。施工压力5.6-60Mpa，平均压力57.8Mpa。表3-1 延863井山2层压裂施工数据表射孔井段(m)3604-3607施工日期2014.9.9试 压阶段时间12:07-12:13压力(MPa)67.5阶 段施工参数设计实际压力（MPa）低替原胶液施工时间12:13-12:47排量(m3/min)0.30.3施工压力1.8-2.0液量(m3)10.910.7平均压力1.9座封封隔器施工时间12:47-12:48坐封排量(m3/min)1.01.0坐封泵压10.2前置液施工时间12:48-13:05排量(m3/min)2.4-2.62.6施工压力52-60加砂量(m3)0.60.6平均压力56净液量(m3)3842.3 平均砂比(%)55携砂液施工时间13:05-13:43排量(m3/min)2.62.6施工压力55.6-60加砂量(m3)1616平均压力57.8净液量(m3)7790.9平均砂比(%)20.8217.6顶替液施工时间13:43-13:48排量(m3/min)2.02.6施工压力54-34.5液量(m3)10.810.8平均压力44.2施工总时间（min）101入地层净液量(m3)设计125.8实际144入井总砂量(m3)16.6液氮排量(L/min)设计240实际240破裂泵压(MPa)36.3入井总液氮(m3)设计9.78实际9.0停泵压力(MPa)34.5平均砂比(%)设计20.82实际17.6施工最高压力(MPa)60.1交联比100：0.4平衡压力(MPa)15-21请预览后下载！四、综合评价1、压裂液评价该压裂液体系采用0.45%羟丙基瓜尔胶+有机硼延迟交联水基压裂液。现场压裂液的配制，严格按照设计配方、数量要求执行。按照设计要求的先后次序加入药品量并循环均匀，经现场实测，每罐液体性能均达到了设计要求； pH值9.511，基液与交联液交联性能良好，满足压裂施工要求。从施工情况来看，该压裂液完全能够满足该地区的施工要求。2、压裂工艺评价该次压裂采用封隔器、油管注入、套管打平衡液的方式；压裂工具采用了Y344-114型压裂封隔器，这类封隔器的性能可靠是能够达到施工要求；为了快排液过程，提高压裂液返排率，本次工艺除了在压裂液体系中添加助排剂达到层内助排外，压裂施工时采用液氮伴注的方式以提高进入地层的液体返排率。在压裂施工中采用了液氮伴注技术，有利于提高压裂液返排能力。本次施工中，山2压裂较为正常，压力缓慢下降平稳，整个过程的施工顺利。 五、结论及建议1、结论本次施工中的山2层加砂规模较小完成的加砂量为16.6 m3，施工开始时破裂压力明显。但整个过程中压力波动不明显，在顶替液阶段压力并有所下降，山2层加砂难度还是较大。并且该地层破裂压力也明显，整个过程压力变化波动不大，施工压力平稳，压力较高即始终在55.6-60MPa。 2、建议本次施工山2层从地层的情况解释上来看，孔隙度和渗透率都不高，导致加砂比较困难，请预览后下载！在以后的施工中遇同类型地层应设计较小的加砂量以保证施工的正常，在以后的施工过程中如遇到同类地层可以参考本地层的加砂量以便达到更好的压裂效果。 请预览后下载！六、附件附图1、延863井山2层压裂管柱及井身结构示意图套管：139.7mm×3790.80m×2555套管：244.5mm×495.54m喇叭口深度：3603m73mm油管3根钻头：311.1mm×495.54m34mm孔径节流器（不带滑套） 人工井底：3775.50m ：2815m73mm油管串钻头：215.9mm×3796.00mKDB-114水力锚深度：3572.5mmY344-114封隔器深度：3573m安全接头（不带反洗循环阀）深度：3572mm 山2层射孔井段：3604-3607m请预览后下载！附表1、延863井山2层每分钟压裂施工数据表阶段/时间砂比(油管)压力(油管)压力(套管)排量(油管)总液量(油管)总砂量(油管)阶段液量(油管)%MPaMPam3/Minm3m3m3试压12:07:020.007.520.260.010.000.000.0012:08:020.0038.640.280.000.010.000.0112:09:020.0064.120.190.000.010.000.0112:10:020.0067.410.260.000.010.000.0112:11:020.0067.290.270.000.010.000.0112:12:020.0067.090.220.000.010.000.0112:13:020.0067.040.280.000.010.000.0112:13:210.000.560.200.000.010.000.01低替12:13:220.000.650.260.000.010.000.0012:14:220.002.020.200.310.250.000.2412:15:220.002.070.290.300.570.000.5612:16:220.001.880.230.320.900.000.8912:17:220.002.040.230.321.210.001.2112:18:220.001.900.210.311.530.001.5312:19:220.001.900.220.331.860.001.8512:20:220.001.980.200.332.180.002.1712:21:220.001.840.240.312.490.002.4912:22:220.001.980.270.312.810.002.8012:23:220.001.840.250.343.140.003.1312:24:220.001.850.200.333.460.003.4512:25:220.001.880.210.323.770.003.7612:26:220.001.860.270.324.100.004.0912:27:220.001.870.280.314.420.004.4112:28:220.001.990.220.324.740.004.7312:29:220.001.930.230.345.060.005.0512:30:220.001.890.300.315.380.005.3712:31:220.001.940.250.325.700.005.6912:32:220.001.970.280.336.020.006.0112:33:220.001.870.200.336.340.006.3312:34:220.001.840.280.316.660.006.6512:35:220.001.870.300.336.980.006.9712:36:220.001.830.250.347.300.007.2912:37:220.001.910.210.317.620.007.6112:38:220.001.990.290.317.940.007.9312:39:220.001.830.280.338.260.008.25请预览后下载！12:40:220.001.970.240.328.580.008.5712:41:220.002.070.220.338.900.008.8912:42:220.002.000.280.339.220.009.2212:43:220.002.100.220.349.540.009.5412:44:220.002.040.190.329.870.009.8612:45:220.002.140.300.3110.190.0010.1812:46:220.001.970.220.3110.510.0010.5012:47:100.002.040.250.3310.760.0010.75坐封12:47:110.002.040.190.3210.770.000.0112:48:080.0034.440.211.0211.500.000.74前置12:48:090.0034.100.281.0411.520.000.0212:49:090.0037.503.731.3812.600.001.1012:50:090.0045.7217.192.2214.460.002.9612:51:090.0050.3715.642.5816.920.005.4212:52:090.0052.5015.782.5819.520.008.0212:53:090.0056.7516.852.5922.120.0010.6212:54:095.3457.5220.262.6024.720.0513.2212:55:096.4857.8918.522.6027.320.2315.8212:56:095.2158.4317.832.6129.920.3818.4212:57:095.3658.5019.392.6132.520.5121.0212:58:090.0058.5918.292.5835.120.6123.6212:59:090.0058.8018.062.6037.730.6126.2213:00:090.0058.9520.922.6140.320.6128.8213:01:090.0059.1720.322.5942.930.6131.4213:02:090.0059.5519.522.5945.520.6134.0213:03:090.0059.9119.332.6048.120.6136.6213:04:090.0059.9820.482.6250.730.6139.2213:05:090.0060.1020.162.5953.320.6141.8213:05:192.5060.0819.812.5953.760.6142.25携砂13:05:205.2560.0419.782.6253.800.610.0413:06:209.7259.9619.482.6056.400.832.6413:07:209.2859.9419.292.6059.001.065.2413:08:209.0959.7921.102.6161.601.297.8413:09:209.4859.5320.732.6064.201.5210.4413:10:209.2059.6320.562.6166.801.7413.0413:11:208.9659.7120.352.5869.401.9715.6413:12:209.2659.7320.232.5972.002.2018.2413:13:2013.8359.8419.812.6274.602.5020.8413:14:2013.5559.2819.552.6077.202.8423.4413:15:2014.5258.9521.432.6079.803.1826.05请预览后下载！13:16:2014.2858.6421.522.5982.403.5228.6513:17:2014.2558.5020.942.6085.003.8631.2513:18:2014.4358.3820.872.6287.604.2033.8413:19:2014.0658.1920.732.6090.204.5436.4513:20:2019.0358.1520.692.6092.804.9239.0413:21:2018.3358.2720.532.6295.405.3641.6513:22:2018.4658.2620.542.5998.005.8044.2413:23:2018.0858.5320.272.60100.606.2346.8413:24:2018.5057.8220.292.59103.206.6649.4413:25:2018.3657.4820.232.62105.807.1052.0413:26:2018.6157.3219.732.59108.407.5354.6413:27:2018.6157.1419.762.59111.007.9657.2413:28:2022.8557.1019.662.59113.608.4759.8413:29:2022.8556.6919.792.59116.209.0062.4413:30:2022.7656.7819.592.61118.809.5365.0413:31:2022.6156.7919.482.62121.4010.0567.6413:32:2022.9456.7619.492.58124.0010.5870.2413:33:2022.8256.8919.562.60126.6011.1172.8413:34:2022.6456.8519.432.60129.2011.6375.4413:35:2022.9157.0119.312.60131.8012.1678.0413:36:2025.4057.1219.332.61134.4012.7180.6413:37:2025.3956.5319.312.61137.0013.2983.2413:38:2025.7256.2319.292.62139.6013.8785.8413:39:2025.8956.1119.172.59142.2014.4688.4413:40:2025.5155.7319.042.60144.8015.0491.0413:41:2025.7255.3819.002.60147.4015.6293.6413:42:2028.3755.3519.092.61149.9916.2596.2413:43:200.0054.5919.012.60152.5916.6098.8413:43:420.0054.1918.652.58153.5516.6099.79顶替13:43:430.0054.0218.672.61153.5916.600.0413:44:430.0054.4518.582.58156.1916.602.6413:45:430.0054.5618.592.60158.7916.605.2413:46:430.0054.3318.542.59161.3916.607.8413:47:430.0054.2818.432.58163.9916.6010.4413:48:080.0034.5418.070.00164.3716.6010.82请预览后下载！附图2、延863井山2层压裂施工曲线 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