-
公开(公告)号：US11808087B2
公开(公告)日：2023-11-07
申请号：US17630724
申请日：2020-07-22
申请人： Varel Europe S.A.S.
CPC分类号： E21B10/325 , E21B10/42 , E21B10/62
摘要： A bit for drilling a wellbore includes: a shank having a coupling formed at an upper end thereof; a body removably attached to a lower end of the shank and having a blade receptacle formed therethrough; a blade fixed to the body; a plurality of superhard cutters mounted along a leading edge of the fixed blade; a blade disposed in the blade receptacle and longitudinally movable relative to the body between an extended position and a retracted position; a plurality of superhard cutters mounted along a leading edge of the movable blade; and a spring disposed between the shank and the movable blade and biasing the movable blade toward the extended position.
-
公开(公告)号：US09359824B2
公开(公告)日：2016-06-07
申请号：US14162501
申请日：2014-01-23
申请人： Varel Europe S.A.S.
发明人： Gary M. Thigpen , Federico Bellin , Marvin Windsor Amundsen , Olivier Ther , Alfazazi Dourfaye , Bruno Cuillier De Maindreville , Williams Gomez
摘要： An apparatus and method for manufacturing a downhole tool that reduces failures occurring along a bondline between a cemented matrix coupled around a blank. The cemented matrix material is formed from a tungsten carbide powder, a shoulder powder, and a binder material, wherein at least one of the tungsten carbide powder or the shoulder powder is absent of any free tungsten. The blank, which optionally may be coated, is substantially cylindrically shaped and defines a channel extending from a top portion and through a bottom portion of the blank. The absence of free tungsten from at least one of the tungsten carbide powder or the shoulder powder reduces the reaction with iron from the blank, thereby allowing the control and reduction of intermetallic compounds thickness within the bondline.
摘要翻译： 一种用于制造井下工具的装置和方法，其减少沿着围绕坯料耦合的胶结基体之间的粘合线发生的故障。 胶结基体材料由碳化钨粉末，肩状粉末和粘合剂材料形成，其中至少一种碳化钨粉末或肩状粉末不含任何游离钨。 任选地可以涂覆的坯件基本上是圆柱形的并且限定了从顶部延伸并穿过坯料的底部的通道。 来自碳化钨粉末或肩部粉末中的至少一种的游离钨的存在减少了来自坯料的铁的反应，从而允许控制和还原粘合层内的金属间化合物厚度。
-
公开(公告)号：US11802444B2
公开(公告)日：2023-10-31
申请号：US17609120
申请日：2020-06-22
申请人： Varel Europe S.A.S.
发明人： Gilles Pelfrene , Alfazazi Dourfaye
摘要： A bit for drilling a wellbore includes: a body; and a cutting face. The cutting face includes: an inner section and an outer section; a plurality of blades protruding from the body, and a row of superhard cutters mounted along each blade, the cutters in the inner section having a negative profile angle and the cutters in the outer section having a positive profile angle. At least one of: at least one inner cutter is oriented at a negative side rake angle to create a weight on bit (WOB) reducing effect, and at least one outer cutter is oriented at a positive side rake angle to create the WOB reducing effect. Each of the rest of the cutters are oriented at a side rake angle such that an overall effect of the side rake angles is the WOB reducing effect.
-
4.发明申请公开(公告)号：US20170173717A1
公开(公告)日：2017-06-22
申请号：US15352763
申请日：2016-11-16
申请人： Varel Europe S.A.S.
发明人： Olivier Ther , Alfazazi Dourfaye , Bruno Cuillier , Williams Gomez , Yves Cazalas , Gilles Gallego
CPC分类号： B23K1/0008 , B22C9/22 , B22D19/06 , B22D19/14 , B22D23/06 , B22D27/04 , B22D29/00 , B22F3/004 , B22F3/26 , B22F7/08 , B23K2101/002 , B23K2103/52 , C22C1/1036 , C22C29/005 , C22C29/08 , E21B10/54
摘要： A method for manufacturing a matrix drill bit includes: placing a metallic blank within a casting assembly including a mold having an inner surface formed into a negative shape of facial features of the drill bit; loading powder into an annulus formed between the blank and the mold, the powder including at least one of: ceramic powder and cermet powder; placing a binder alloy into the casting assembly over the blank and the mold; protecting the binder alloy from oxidation; inserting the casting assembly, blank, powder, and binder alloy into a furnace; operating the furnace to heat the protected binder alloy to an infiltration temperature between solidus and liquidus temperatures thereof, thereby infiltrating the powder with the binder alloy and forming a bit body; removing the bit body from the furnace; and after removal, attaching cutters to blades of the bit body.
-
公开(公告)号：US10329843B2
公开(公告)日：2019-06-25
申请号：US15585343
申请日：2017-05-03
申请人： VAREL EUROPE S.A.S.
IPC分类号： E21B10/02 , E21B10/42 , E21B10/48 , E21B10/54 , E21B10/60 , E21B10/567 , E21B17/042
摘要： A drill bit includes a shank having a threaded coupling formed at an upper end thereof; a bit body mounted to a lower end of the shank and having a plenum; a gage section forming an outer portion of the drill bit; a cutting face forming a lower end of the drill bit and including: a core receptacle formed at a center of the cutting face, operable to receive a core of earth, and including: a concave core cutter mounted to a bottom of the bit body; and a core port extending from the plenum through the bottom of the bit body and operable to discharge drilling fluid onto the core and core cutter; a plurality of blades protruding from a bottom of the bit body and extending from a periphery of the core receptacle to the gage section; and a plurality of leading cutters mounted along each blade.
-
公开(公告)号：US20170335630A1
公开(公告)日：2017-11-23
申请号：US15585343
申请日：2017-05-03
申请人： VAREL EUROPE S.A.S.
IPC分类号： E21B10/02 , E21B10/48 , E21B10/567 , E21B10/54 , E21B10/60 , E21B10/42 , E21B17/042
CPC分类号： E21B10/02 , E21B10/42 , E21B10/48 , E21B10/54 , E21B10/567 , E21B10/602 , E21B10/605 , E21B17/042 , E21B2010/545
摘要： A drill bit includes a shank having a threaded coupling formed at an upper end thereof; a bit body mounted to a lower end of the shank and having a plenum; a gage section forming an outer portion of the drill bit; a cutting face forming a lower end of the drill bit and including: a core receptacle formed at a center of the cutting face, operable to receive a core of earth, and including: a concave core cutter mounted to a bottom of the bit body; and a core port extending from the plenum through the bottom of the bit body and operable to discharge drilling fluid onto the core and core cutter; a plurality of blades protruding from a bottom of the bit body and extending from a periphery of the core receptacle to the gage section; and a plurality of leading cutters mounted along each blade.
-
-
-
-
-
搜索结果
6 条记录 (耗时 0.011 秒)
