习题一井斜水平投影图的编制一、井斜水平投影图的概念井斜水平投影图就是把某斜井的各个斜井段投影到某一水平面上所得到的图件。反映实际井底偏离井口的水平位移和方位,以及钻遇目的层的垂直井深,是油气勘探、开发的基础图件之一。二、习题目的1.了解井斜水平投影图的概念2.掌握利用井斜测井资料来编制井斜水平投影图。三、作图原理NSWEA′BSLHOOαβYiXiANSWEA′BSLHOOαβYiXiAα——斜井段的井斜角β——斜井段的方位角H——L斜井段垂直井深H=L·cosαS——L斜井段的水平投影(位移)S=L·sinαOˊAˊ=OA=L·sinα即为斜井段L在水平面上的投影。各斜井段的井斜角、、321各斜井段的方位角、、321各斜井段间距、、321LLL各斜井段水平位移、、321SSS如果一口斜井由多个斜井段组成,则在水平面上可得到相应的水平投影,从而构成一口斜井的水平投影图(如图1-2)。图中,1.2.3…——测点号四、已知资料1.××油田CB11B井组四口井的井斜数据表2.CB11B-1、CB11B-3、CB11B-4、CB11B-6四口井位于同一口井。五、作图方法1.计算各测点间各斜井段的水平位移Si=Li·sinαi(i=1,2,…n)2.计算各测点间水平位移的直角坐标值Xi=Si·sinβi,Yi=Si·cosβiCB11B-1井井斜数据测点号测点深度间距井斜度方位角水平位移东西坐标(xi)南北坐标(yi)垂深(H)∑X∑Y∑Sβ’(米)(米)(º)(º)(Si)1119511950/0000021250555.21404.983.20-3.823.2-3.85.0140.031300507.31376.354.33-4.657.5-8.511.3138.341350509.31378.085.51-5.9113.0-14.419.4137.8514005010.81409.376.02-7.1819.1-21.628.8138.561450501314511.256.45-9.2125.5-30.840.0140.3715005016.315014.037.02-12.1532.5-42.953.9142.8815505019.515016.698.35-14.4540.9-57.470.4144.5916005022.315318.978.61-16.9049.5-74.389.3146.31016505027.515323.0910.48-20.5760.0-94.8112.2147.71117005027.314522.9313.15-18.7973.1-113.6135.1147.2121750502614021.9214.09-16.7987.2-130.4156.9146.2131800502514021.1313.58-16.19100.8-146.6177.9145.5141850502414020.3413.07-15.58113.9-162.2198.2144.9151900502314019.5412.56-14.97126.4-177.2217.6144.51619505021.513518.3312.96-12.96139.4-190.1235.7143.81720005021.513518.3312.96-12.96152.3-203.1253.9143.11820505021.513518.3312.96-12.96165.3-216.0272.0142.61921257521.513527.4919.44-19.44184.7-235.5299.3141.92022007521.513327.4920.10-18.75204.8-254.2326.5141.12122505021.513318.3313.40-12.50218.2-266.7344.6140.7222305552213020.6015.78-13.24234.0-280.0364.9140.1232355502213018.7314.35-12.04248.4-292.0383.3139.624238025221309.377.17-6.02255.6-298.0392.6139.43.选择适当位置为坐标原点,画十字线代表井口。4.比例尺1:10005.分别绘出各井测点的方位及水平位移(βi,Si),依次连成点线,点的位置代表测点,测点间用直线相连,即为该井组的井斜水平投影图。6.从井口分别与各井的最后一测点连线,得出各井总的水平位移和总的方位角(S、β)。7.图件完善、清绘。EN××油田CB11B-1井斜水平投影图S=392β=139°六、图件要求1.图名:××油田CB11B井组井斜水平投影图。比例尺1:10002.精度要求分别计算出各井的总水平位移和总方位角。误差范围:ΔS=S-Sˊ≤±5mΔβ=β-βˊ≤±1.5°3.图件整洁、完善、22'=))Sxy(('arctanxy139.4