浅谈在钻井工程中出现井斜情况原因及如何防斜

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1、http://www.shandongqzj.com/http://www.lwygbx.com/浅谈在钻井工程中出现井斜情况原因及如何防斜一.柴窝堡凹陷井斜情况分析及防斜措施井斜情况统计取芯资料表明，柴窝堡地区多套地层倾角在35°以上，最高达60°，柴参1井上仓房沟群地层倾角为40°，柴参2井1350m处地层倾角高达60°。从实钻井斜情况可以看出：该地区钻进过程中极易发生井斜，完成的几口井都不同程度地存在井斜，有的甚至很严重，最大的达到6°（见表2-表4）。表2柴参1井井斜统计表井深(m)井斜(

2、°)井深(m)井斜(°)井深(m)井斜(°)井深(m)井斜(°)井深(m)井斜(°)井深(m)井斜(°)50.25450.251070.251480.672080.672881.003900.005150.165900.087400.169400.7510401.8312142.5813153.2514903.5015605.5017154.7518905.6720305.0021256.3322504.0023752.0026752.0027752.5028251.7528702.4229502

3、.8330302.7530702.6731102.33表3柴参2井井斜情况井深(m)井斜(°)井深(m)井斜(°)井深(m)井斜(°)井深(m)井斜(°)井深(m)井斜(°)井深(m)井斜(°)50.67600.751500.583000.923900.926001.166602.837201.507802.509002.839654.5010853.0012653.3314104.0015003.6716503.0017102.2518801.8320901.6722101.0023001.16

4、24000.9225400.9226602.3326751.0027752.1628552.5029452.6729752.6730053.00表4柴参3井井斜情况方位井深井斜方位井深井斜方位井深井斜方位he"governingforthepeople","Nomattertheinterestsofthemasses"conceptunderstandingisnotinplace.Thespecificworktreatswiththedeployment,afewleadingcadresc

5、omplainthatworkistoocomplicated,toomuchresponsibility,thepressureistoolarge,toomuchemphasisonthedifficultyofthework.Forexample,noncoalmine5http://www.shandongqzj.com/http://www.lwygbx.com/井深(m)井斜(°)(°)(m)(°)(°)(m)(°)(°)(m)(°)(°)1510.30172.313512.31182

6、.323500.8015634472.573532510.1013413513.6618724500.4015235473.313493510.0642.414504.8018625500.608336472.593394510.4135.215504.2017426501.002537472.373295510.26109.116504.2016827501.4033838472.613126510.61130.817502.4116428501.2032739472.663007511.621

7、55.618502.0017429502.8033840473.612918511.8014819501.2016930503.4033941473.322939511.8416320501.5016031503.1035642473.9920110511.60172.421501.6015932502.2035443473.3930611511.80197.322501.5016533472.23944973.05323钻具结构及防斜效果分析⑴　柴参1井①　钻具结构（见表5）表5柴参1井钻具结构

8、及钻井参数开钻次序实际钻具结构钻井液密度（g/cm3）钻压（KN）转速（rpm）最大井斜（0）1φ444.5mm钻头+φ241mm钻铤×45.30m+φ203mm钻铤×53.98m+φ178mm钻铤×54.76m+φ127mm钻杆+φ133mm方钻杆。1.08～1.2620～606012φ311.2mm钻头+2个φ311.2mm扶正器十φ203mm短钻铤×1.89m+φ1.18～1.25118～17745～706he"governingforthepeople","Nomatter