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1. 发明授权

US5636692A Casing window formation 失效
标题翻译：套管窗口形成
公开(公告)号：US5636692A
公开(公告)日：1997-06-10
申请号：US568878
申请日：1995-12-11
申请人： David M. Haugen
发明人： David M. Haugen
IPC分类号： E21B7/06 , E21B29/02 , E21B29/06 , E21B43/114 , E21B43/116 , E21B43/1185 , F42D3/00
CPC分类号： F42D3/00 , E21B29/02 , E21B29/06 , E21B43/114 , E21B43/116 , E21B43/11852 , E21B43/11855 , E21B7/061
摘要： A new casing opening formation apparatus has been invented which includes an explosive charge and an apparatus for positioning the explosive charge in a casing in a cased wellbore at a desired location. In one aspect the apparatus includes a drill bit or other drilling device releasably connected to a bit diversion device; and in another aspect the apparatus includes milling apparatus for milling the casing. In one aspect the opening created is a radial ledge for facilitating casing penetration by a mill which mills out a window. In one aspect the opening created has such a radial ledge and includes a slot for inhibiting or preventing coring of the mill. In one aspect the opening created is such a slot alone. In one aspect the opening created is a completed window for sidetracking operations, no further milling is needed and drilling commences in the formation adjacent the explosively created opening. In one aspect the positioning apparatus is a whipstock and a mill is releasably secured to the whipstock to mill past a hole in the casing created by explosion of the explosive charge so that a desired casing window is formed in a single trip of the apparatus into the wellbore.
摘要翻译：已经发明了一种新的套管开口形成装置，其包括炸药和用于将炸药定位在期望位置的套管井筒中的壳体中的装置。在一个方面，该装置包括可释放地连接到钻头分流装置的钻头或其他钻孔装置; 并且在另一方面，该装置包括用于铣削壳体的铣削装置。在一个方面，产生的开口是径向凸缘，用于促进由磨机出来的窗户的套管穿透。在一个方面，产生的开口具有这样的径向凸缘，并且包括用于抑制或防止研磨机取芯的槽。在一个方面，所创造的开口是这样一个槽。在一个方面，产生的开口是用于侧钻操作的完整窗口，不需要进一步的铣削，并且在与爆炸性产生的开口相邻的地层中开始钻孔。在一个方面，定位装置是造斜器，并且磨机可释放地固定到造斜器，以磨碎通过爆炸装药爆炸产生的壳体中的孔，使得期望的壳体窗口在装置的单次行程中形成为井筒

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