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天然气工业 1997
anexplorationonthesidetrackingtechniquethroughdirectlystartingwindowon？177.8mmcasing, PP. 90-91 Abstract: ？sinceoct.1993,byusingthewhipstockfor？177.8mmcasing,madebychuandongdrillingcompany,chuanzhongoilandgasexplorationanddevelopmentcompanyhasfinishedsucces-sivelytheworkoverjobsforsixwells,i.e.wellmo—148,mo—63,mo—71,nan—5,guan—100,sui—34.
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