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1.发明公开
公开(公告)号：EP2340449A2
公开(公告)日：2011-07-06
申请号：EP09821088.3
申请日：2009-10-13
发明人： TRINH, Tu, Tien , SULLIVAN, Eric , CURRY, David
CPC分类号： E21B10/00 , E21B7/04 , E21B44/00 , E21B47/024 , E21B49/00 , G01V5/06 , Y10T29/49826
摘要： A drill bit made according to one embodiment includes at least a gamma ray sensor configured to provide signals representative of a presence and / or amount of a naturally occurring gamma ray source when the drill bit is used for cutting into a formation. A circuit may be configured to process signals from the gamma ray sensor to provide an estimate a parameter relating to the naturally occurring gamma ray source, which may used for purposes such as optimizing drilling parameters and geosteering.
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2.发明公开ROTARY CONE DRILL BIT WITH TRUNCATED ROLLING CONE CUTTERS AND DOME AREA CUTTER INSERTS 失效切割孔与截头圆锥体内部穹顶角色与切削元件
公开(公告)号：EP0846217A4
公开(公告)日：1999-02-24
申请号：EP96928938
申请日：1996-08-15
申请人： DRESSER IND
摘要： A drill bit (10) includes at least two truncated conical cutter assemblies (20) rotatably coupled to support arms (18). The truncated conical cutter assemblies (20) are frusto-conical or conical frustums in shape, with a back face (60) connected to a flat truncated face (22, 62) by conical sides. Primary cutting elements (24) are arranged in a predetermined pattern on the flat truncated face (22, 62). The teeth (26) of the cutter assemblies (20) are spaced from cutting elements (24) of other cutter assemblies (20). The primary cutting elements (24) cut around a conical core rock formation (40) in the center of the borehole, which acts to stabilize the cutter assemblies (20) and urges them outward to cut a full-gage borehole. Secondary cutting elements (52) are mounted in the downward surfaces of a dome area (50). The secondary cutting elements (52) cut down the free-standing core (42) when the bit (10) advances.
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3.发明授权DREHBOHRWERKZEUG, BOHRGERÄT UND VERFAHREN ZUM ERSTELLEN EINER BOHRUNG IM BODEN 有权钻探工具，钻头和用于制造底部钻头的方法
公开(公告)号：EP3067512B1
公开(公告)日：2017-08-30
申请号：EP15158585.8
申请日：2015-03-11
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公开(公告)号：EP1218619A1
公开(公告)日：2002-07-03
申请号：EP00964431.1
申请日：2000-09-28
发明人： HAUGEN, David, Michael , INGRAM, Gary, Duron , HOFFMAN, Corey, Eugene , BEEMAN, Robert, Stephen
CPC分类号： E21B23/006 , E21B17/06 , E21B17/1014 , E21B23/06
摘要： A wellbore system with a tubular string extending from an earth surface down into a wellbore in the earth, a packer system with a selectively settable packer element, and a disconnect located between an end of the tubular string and the packer system, the disconnect operable from the surface by imposing a downward force on the tubular string. In one aspect the packer system's packer element is a tension-set packer element. A wellbore disconnect with a top sub (122), a mandrel (126) having an upper end secured to the top sub and a portion below the upper end releasably secured with at least one releasable member (138) to a carrier member (136), the carrier member having apparatus (156) for selectively gripping the mandrel, the apparatus for selectively gripping the mandrel also selectively gripping a bottom sub (144) within which the mandrel is moveable, the at least one releasable member releasable in response to a downward force on the disconnect.
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公开(公告)号：EP1218619B1
公开(公告)日：2004-07-21
申请号：EP00964431.1
申请日：2000-09-28
发明人： HAUGEN, David, Michael , INGRAM, Gary, Duron , HOFFMAN, Corey, Eugene , BEEMAN, Robert, Stephen
CPC分类号： E21B23/006 , E21B17/06 , E21B17/1014 , E21B23/06
摘要： A wellbore system with a tubular string extending from an earth surface down into a wellbore in the earth, a packer system with a selectively settable packer element, and a disconnect located between an end of the tubular string and the packer system, the disconnect operable from the surface by imposing a downward force on the tubular string. In one aspect the packer system's packer element is a tension-set packer element. A wellbore disconnect with a top sub (122), a mandrel (126) having an upper end secured to the top sub and a portion below the upper end releasably secured with at least one releasable member (138) to a carrier member (136), the carrier member having apparatus (156) for selectively gripping the mandrel, the apparatus for selectively gripping the mandrel also selectively gripping a bottom sub (144) within which the mandrel is moveable, the at least one releasable member releasable in response to a downward force on the disconnect.
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公开(公告)号：EP0677136B1
公开(公告)日：1996-09-11
申请号：EP94904628.8
申请日：1994-01-04
摘要： In an assembly made up of a spindle formed integrally with a revolving cutting element (10), the longitudinal axis of the spindle being the axis of rotation of the cutting element, the spindle is set into a cylindrical bearing (30). The bearing (30) is fixed in the main body (4) of the bit. The bearing element (30) and a plate (60) form a thrust surface with the end of the bearing (30) at right angles to the axis of rotation of the spindle, which the other end of the bearing element made with the flange projecting outwards is held in the cutting element (10) by means of the retaining ring (20) which is fixed in the cutting element. A thrust surface (Y) at right angles to the axis of the rotation of the spindle is created between the top end of the bearing element (30) and the cutting element (10) and another (X) between the retaining ring (20) and the main body (4) of the bit. By maintaining the spindle centrally in the bearing the wear on the bearing is radically reduced.
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