井眼軌跡設(shè)計(jì)

1、井眼軌跡設(shè)計(jì)引言11井軌道設(shè)計(jì)依據(jù)12設(shè)計(jì)原則13設(shè)計(jì)步驟24基礎(chǔ)數(shù)據(jù)35井身剖面設(shè)計(jì)參數(shù)36參考文獻(xiàn)10引言井眼軌道是指在一口井鉆進(jìn)之前人們預(yù)想的該井井眼軸線形狀。井眼軌跡是指一口已鉆成的井的實(shí)際井眼軸線形狀。按照設(shè)計(jì)軌道的不同，井可以分為兩大類：直井和定向井。對(duì)于直井來(lái)說(shuō)，井眼軸線就是一條鉛垂線，不需要進(jìn)行專門的設(shè)計(jì)。定向井是指按照預(yù)先設(shè)計(jì)的井斜方位和井眼的軸線形狀進(jìn)行鉆進(jìn)的井，凡是設(shè)計(jì)目標(biāo)偏離井口所在鉛垂線的井都屬于定向井。1井軌道設(shè)計(jì)依據(jù)（1）以地質(zhì)設(shè)計(jì)給定的入靶點(diǎn)、終止點(diǎn)垂深及大地測(cè)量坐標(biāo)為依據(jù)。（2）根據(jù)給定的井口坐標(biāo)和靶點(diǎn)坐標(biāo)，完成單井設(shè)計(jì)。2設(shè)計(jì)原則（1）軌道設(shè)計(jì)應(yīng)根據(jù)油藏特性

2、及地質(zhì)要求、區(qū)域地質(zhì)資料和工程資料，結(jié)合造斜工具的造斜能力、井眼軌跡控制技術(shù)水平以及地面、地下條件，選擇造斜率、靶前位移、造斜點(diǎn)深度，調(diào)整井段長(zhǎng)度及位置，并應(yīng)經(jīng)過(guò)多次循環(huán)調(diào)整，優(yōu)選上述參數(shù)。（2）在地層巖性及造斜工具的造斜能力都確定時(shí)，增斜段應(yīng)選擇單增斜軌道。在地層巖性及造斜工具的造斜能力都較穩(wěn)定時(shí)，應(yīng)選擇靶前位移較小、造斜率較高和增斜段較少的軌道。反之，在確定造斜率、靶前位移和增斜段的數(shù)量時(shí)要留有充分的控制余地。（3）造斜點(diǎn)應(yīng)選可鉆性較好，無(wú)坍塌、無(wú)縮徑的地層。 （4）調(diào)整井段的位置應(yīng)放在最后一個(gè)增斜段之前。 （5）對(duì)確定的井眼軌道，應(yīng)進(jìn)行典型鉆具組合的摩擦阻力和扭矩計(jì)算，并以此為根據(jù)進(jìn)行鉆

3、機(jī)選型和鉆具強(qiáng)度校核。3設(shè)計(jì)步驟關(guān)鍵參數(shù)計(jì)算圖1多靶三段式軌道給定、，需計(jì)算的關(guān)鍵參數(shù)為、。由圖 可得 （3-1） 令： （3-2） （3-3） （3-4） 則得： （3-5）將 （3-6） （3-7）代入式（3-5）中并簡(jiǎn)化，可得： （3-8） （3-9）4基礎(chǔ)數(shù)據(jù)表1單井井口和靶點(diǎn)坐標(biāo)井名井口坐標(biāo)靶點(diǎn)坐標(biāo)ABXYXY垂深XY垂深YY11187530513294738187526663294267241818751596329329024505井身剖面設(shè)計(jì)參數(shù)根據(jù)設(shè)計(jì)，選定造斜率MD (m)CL (m)Inc (°)Azi (°)TVD (m)NS (m)EW (m)V.

4、Sec (m)Dogleg (°/30m)T.Face (°)Build (°/30m)1000000000021700170000170000000031796.7296.727.71318.911796.434.9-4.27-0.462.391318.912.39141798.191.477.71318.911797.895.05-4.4-0.4700052762.04963.8588.73222.42418-385-471605.142.789-96.632.52262762.0488.73222.42418-385-471605.1400074211.34

5、1449.2988.73222.42450-1455-14482052.74000表2 軌跡主要點(diǎn)數(shù)據(jù)表表3 設(shè)計(jì)軌道詳細(xì)點(diǎn)數(shù)據(jù)表MD (m)Inc (°)Azi (°)TVD (m)N/S (m)E/W (m)V.Sec. (m)DLeg (°/30m)1000000002300030000036000600000490009000005120001200000615000150000071800018000008210002100000924000240000010270002700000113000030000001233000330000013360003

6、600000143900039000001542000420000016450004500000174800048000001851000510000019540005400000205700057000002160000600000022630006300000236600066000002469000690000025720007200000267500075000002778000780000028810008100000298400084000003087000870000031900009000000329300093000003396000960000034990009900000

7、351020001020000036105000105000003710800010800000381110001110000039114000114000004011700011700000411200001200000042123000123000004312600012600000441290001290000045132000132000004613500013500000471380001380000048141000141000004914400014400000501470001470000051150000150000005215300015300000531560001560

8、0000541590001590000055162000162000005616500016500000571680001680000058170000170000005917100.8318.9117100.05-0.0502.3916017403.19318.911739.980.84-0.73-0.082.3916117705.58318.911769.892.57-2.24-0.242.391621796.727.71318.911796.434.9-4.27-0.462.391631798.197.71318.911797.895.05-4.4-0.4706418007.69317.

9、671799.685.23-4.56-0.492.7896518307.93297.11829.417.65-7.750.052.7896618609.06279.731859.088.99-11.922.042.78967189010.8267.031888.649.25-17.065.482.78968192012.91258.1219188.41-23.1510.372.78969195015.24251.791947.096.49-30.1816.692.78970198017.7247.141975.863.48-38.1324.432.78971201020.25243.62004

10、.23-0.6-46.9833.562.78972204022.84240.842032.13-5.74-56.7244.082.78973207025.48238.612059.5-11.94-67.3155.952.78974210028.15236.782086.28-19.18-78.7469.142.78975213030.83235.242112.39-27.44-90.9883.632.78976216033.53233.932137.78-36.71-10499.382.78977219036.24232.792162.38-46.95-117.76116.352.789782

11、22038.97231.82186.15-58.15-132.24134.52.78979225041.7230.912209.01-70.28-147.4153.792.78980228044.43230.112230.93-83.3-163.2174.172.78981231047.17229.392251.84-97.2-179.62195.62.78982234049.92228.722271.7-111.94-196.59218.022.78983237052.67228.112290.46-127.47-214.1241.382.78984240055.42227.552308.0

12、8-143.78-232.1265.632.78985243058.17227.022324.5-160.81-250.54290.712.78986246060.93226.512339.71-178.52-269.37316.552.78987249063.68226.042353.65-196.88-288.57343.112.78988252066.44225.592366.29-215.84-308.07370.32.78989255069.2225.162377.62-235.35-327.84398.082.78990258071.97224.742387.59-255.38-3

13、47.83426.372.78991261074.73224.332396.19-275.86-367.98455.112.78992264077.49223.942403.39-296.76-388.26484.232.78993267080.25223.552409.18-318.03-408.61513.652.78994270083.02223.172413.54-339.6-428.99543.322.78995273085.78222.82416.47-361.44-449.34573.162.789962762.0488.73222.42418-385-471605.142.78

14、997279088.73222.42418.62-405.64-489.85633.06098282088.73222.42419.28-427.79-510.07663.03099285088.73222.42419.94-449.94-530.29692.990100288088.73222.42420.6-472.09-550.52722.960101291088.73222.42421.27-494.24-570.74752.920102294088.73222.42421.93-516.39-590.97782.890103297088.73222.42422.59-538.53-6

15、11.19812.850104300088.73222.42423.25-560.68-631.41842.820105303088.73222.42423.92-582.83-651.64872.780106306088.73222.42424.58-604.98-671.86902.750107309088.73222.42425.24-627.13-692.08932.710108312088.73222.42425.9-649.28-712.31962.680109315088.73222.42426.57-671.43-732.53992.640110318088.73222.424

16、27.23-693.58-752.751022.610111321088.73222.42427.89-715.72-772.981052.570112324088.73222.42428.55-737.87-793.21082.540113327088.73222.42429.22-760.02-813.431112.50114330088.73222.42429.88-782.17-833.651142.470115333088.73222.42430.54-804.32-853.871172.430116336088.73222.42431.2-826.47-874.11202.4011

17、7339088.73222.42431.87-848.62-894.321232.360118342088.73222.42432.53-870.76-914.541262.330119345088.73222.42433.19-892.91-934.771292.290120348088.73222.42433.85-915.06-954.991322.260121351088.73222.42434.51-937.21-975.211352.220122354088.73222.42435.18-959.36-995.441382.190123357088.73222.42435.84-9

18、81.51-1015.661412.150124360088.73222.42436.5-1003.66-1035.891442.120125363088.73222.42437.16-1025.81-1056.111472.080126366088.73222.42437.83-1047.95-1076.331502.050127369088.73222.42438.49-1070.1-1096.561532.010128372088.73222.42439.15-1092.25-1116.781561.980129375088.73222.42439.81-1114.4-11371591.940130378088.73222.42440.48-1136.55-1157.231621.910131381088.73222.42441.14-1158.7-1177.451651.870132384088.73222.42441.8-1180.85-1197.681681.840133387088.73222.42442.46-1203-1217.91711.80134390088.73222.42443.13-1225.14-1238.121741.770135393088.73222.42443.79-1247.29-1258.351771.730136396088.7322