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1. 发明公开

EP4411072A2 HYDRAULIC DOWN-THE-HOLE HAMMER AND SUBSEA PILE 审中-公开
公开(公告)号：EP4411072A2
公开(公告)日：2024-08-07
申请号：EP24183706.1
申请日：2022-04-28
申请人： Mincon International Limited
发明人： KESKINIVA, Markku , PURCELL, Joseph , DUCK, Simon
IPC分类号： E02D5/34
CPC分类号： E02D5/34 , E02D7/06 , E02D7/28 , E02D15/08 , E02D27/525 , E21B4/14
摘要： The present invention relates to a hydraulic down-the-hole hammer. The hammer comprises an elongate shaft and a piston having a central bore therethrough, the piston slidably mounted for reciprocal movement on the shaft and arranged to impact a percussion bit. Forward and rear drive chambers for the piston are disposed between the piston and the shaft and the forward chamber is separated from the rear chamber by an annular shoulder formed internally of the piston bore. The hammer also comprises a control valve to control reciprocation of the piston, wherein the control valve is arranged within the central bore of the piston. The hammer may be a disposable water hammer in which the piston is an outermost component of the hammer.
The invention also relates to a method and system for installing a load-bearing element in a seabed, a method and system for installing a subsea anchor on a seabed, a subsea pile and a subsea anchor.

2. 发明公开

EP4339416A2 FLUSHING AND CONNECTION ARRANGEMENTS FOR PERCUSSION DRILL TOOLS 审中-实审
公开(公告)号：EP4339416A2
公开(公告)日：2024-03-20
申请号：EP24155400.5
申请日：2021-03-25
申请人： Mincon International Limited
发明人： KESKINIVA, Markku , SEXTON, Ben
IPC分类号： E21B1/30
摘要： The present invention relates to a fluid-operated percussion drill tool (1) comprising an outer wear sleeve (2) comprising a substantially cylindrical wall (3) and having inner (4) and outer (5) surfaces. The tool also comprises a percussion bit (6) having a head portion (7) and a bit retaining portion (8) and located at a forward end (9) of the outer wear sleeve. The tool further comprises a sliding piston (10) mounted for reciprocating movement within the outer wear sleeve to strike the percussion bit. The tool also includes a drive ring (11) having a substantially cylindrical wall (12) and comprising connection means (13) adapted for connecting the drive ring to a drive means of the fluid-operated percussion drill tool. At least one flushing channel (31) provides a fluid path to the cutting face of the bit for a flushing medium. A first portion (32) of the at least one flushing channel extends longitudinally within the wall (3) of the wear sleeve, a second portion (36) of the at least one flushing channel extends longitudinally within the wall (12) of the drive ring and a third portion (40) of the at least one flushing channel extends through the head portion (7) of the percussion bit to the cutting face (43) of the bit.

3. 发明公开

EP3884135A1 DRILL BIT ASSEMBLY FOR PERCUSSION DRILL TOOLS 有权
公开(公告)号：EP3884135A1
公开(公告)日：2021-09-29
申请号：EP19808751.2
申请日：2019-11-20
申请人： Mincon International Limited
发明人： PURCELL, Joseph
IPC分类号： E21B4/14 , E21B10/36 , E21B10/627

4. 发明公开

EP3655614A1 DRILL BIT WITH DETACHABLE BIT HEAD 有权
公开(公告)号：EP3655614A1
公开(公告)日：2020-05-27
申请号：EP18748868.9
申请日：2018-07-17
申请人： Mincon International Limited
发明人： PURCELL, Joseph , PURCELL, Ciaran
IPC分类号： E21B1/00 , E21B4/14 , E21B10/36

5. 发明公开

EP4240934A1 DRILLING DEVICE WITH FLUID COLUMN RESONATOR 审中-实审
公开(公告)号：EP4240934A1
公开(公告)日：2023-09-13
申请号：EP21807053.0
申请日：2021-11-05
申请人： Mincon International Limited
发明人： KESKINIVA, Markku
IPC分类号： E21B6/00 , E21B7/24 , E21B4/14 , E21B1/12 , E21B1/14 , E21B1/24 , E21B1/26 , E21B1/36

6. 发明公开

EP4200513A1 FLAPPER VALVE FOR PERCUSSION DRILL TOOLS 有权
公开(公告)号：EP4200513A1
公开(公告)日：2023-06-28
申请号：EP21763338.7
申请日：2021-08-18
申请人： Mincon International Limited
发明人： SEXTON, Ben , KESKINIVA, Markku
IPC分类号： E21B34/08

7. 发明公开

EP4219880A1 DRILL BIT ASSEMBLY FOR PERCUSSION DRILL TOOLS 有权
公开(公告)号：EP4219880A1
公开(公告)日：2023-08-02
申请号：EP23165653.9
申请日：2019-11-20
申请人： Mincon International Limited
发明人： PURCELL, Joseph
IPC分类号： E21B4/14 , E21B10/36 , E21B10/627
摘要： The present invention relates to a drill bit assembly for fluid-operated percussion drill tools comprising a percussion bit having a head portion and a bit retaining portion. Engagement means are provided on the head portion engageable with complementary engagement means on a drive ring whereby rotational drive from the drive ring may be transmitted to the percussion bit. The assembly also comprises bit retaining means adapted for engagement with the bit retaining portion of the percussion bit to retain the percussion bit in the drill bit assembly. Connection means on the drive ring are adapted for connecting the drive ring to a drive means of the fluid-operated percussion drill tool. According to a first aspect, the drive ring comprises a plurality of separable part-annular drive dog segments, wherein the bit retaining means are provided on at least two of the drive dog segments. According to a second aspect the head portion of the bit comprises a main body and a plurality of bit inserts engaged therewith, and wherein the engagement means is provided by the bit inserts.

8. 发明公开

EP4127375A1 FLUSHING AND CONNECTION ARRANGEMENTS FOR PERCUSSION DRILL TOOLS 有权
公开(公告)号：EP4127375A1
公开(公告)日：2023-02-08
申请号：EP21712395.9
申请日：2021-03-25
申请人： Mincon International Limited
发明人： KESKINIVA, Markku , SEXTON, Ben
IPC分类号： E21B1/26 , E21B1/38 , E21B4/14 , E21B10/36 , E21B1/30

9. 发明公开

EP4065810A1 A DRILL BIT ASSEMBLY FOR FLUID-OPERATED PERCUSSION DRILL TOOLS 有权
公开(公告)号：EP4065810A1
公开(公告)日：2022-10-05
申请号：EP20812276.2
申请日：2020-11-24
申请人： Mincon International Limited
发明人： PURCELL, Joseph
IPC分类号： E21B10/36 , E21B17/07

10. 发明公开

EP3548690A1 DRILL BITS 审中-公开
公开(公告)号：EP3548690A1
公开(公告)日：2019-10-09
申请号：EP17825116.1
申请日：2017-11-29
申请人： Mincon International Limited
发明人： KOSOVICH, John
IPC分类号： E21B10/36 , E21B10/56

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