| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 81 | Latchable reaming bit | US11404337 | 2006-04-14 | US20070034412A1 | 2007-02-15 | Ingo Forstner; Angela Durkin; Troy Miller; Morten Myhre |
| A drilling assembly supports a liner for making a wellbore. The BHA comprises a pilot bit and a reamer above it that is larger in diameter than the suspended liner. If the BHA needs to be pulled out, the reamer is brought into contact with the liner and a latch mechanism between the two engages as another latch that had held the reamer bit to the BHA is released. The reamer bit stays with the liner as the BHA is pulled and later reinserted. On the way in the BHA latches to the reamer bit which then unlatches from the liner bottom. Preferably, splines and a shoulder on the BHA are used to drive the reamer bit as opposed to any power being transmitted through the latch between the BHA and the reamer bit. However, the latch mechanism between the BHA and the reamer bit could also provide torque and weight on bit for drilling operations. The process may be repeated. | ||||||
| 82 | Method for drilling and drilling apparatus to enable reverse circulation | US10471145 | 2002-02-18 | US07143846B2 | 2006-12-05 | Jorma Järvelä; Vesa Järvelä |
| The invention relates to a method for drilling, being carried out by a drilling apparatus, having a drilling device (1) that comprises a casing part (2) and a drilling unit (3), in the drilling head (I) of which there are first drilling means (4) for drilling a center hole and second drilling means (5) for reaming of the center hole for the casing part (2) as well as flushing flow arrangement (6) for flushing of waste, being generated. At least during the drilling situation, the first drilling means (4) are coupled by a power transmitting and, in order to enable removal of the same from the hole, removable arrangement, such as a bayonet coupling or like, with the second drilling means (5). A feed flow (6a) of flushing medium, being carried out centrally, is being transferred by internal drillings (X1) inside a first frame part (4a), belonging to the first drilling means (4), to its outer periphery and a return flow (6b) of flushing medium, in order to accomplish a so called reverse circulation of flushing medium, from the drilling surface (pp2) of the first frame part (4a) through internal drillings (X2) therein into a space (z) between the first frame part (4a) and the casing part (2). The invention relates also to a drilling apparatus for exploitation of the method described above. | ||||||
| 83 | Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells | US10739483 | 2003-12-18 | US07100710B2 | 2006-09-05 | William Banning Vail, III |
| The steel drill string attached to a drilling bit during typical rotary drilling operations used to drill oil and gas wells is used for a second purpose as the casing that is cemented in place during typical oil and gas well completions. Methods of operation are described that provide for the efficient installation of a cemented steel cased well wherein the drill string and the drill bit are cemented into place during one single drilling pass down into the earth. Different physically alterable bonding materials may be substituted for cement. A one-way cement valve is installed near the drill bit of the drill string that allows the cement to set up efficiently under ambient hydrostatic conditions while the drill string and drill bit are cemented into place during one single drilling pass into the earth. | ||||||
| 84 | Abrasive jet drilling assembly | US09561849 | 2000-04-28 | US06510907B1 | 2003-01-28 | Jan Jette Blange |
| A drilling assembly for drilling a borehole into an earth formation is disclosed having a drill string extending into the borehole and a jetting device arranged at a lower part of the drill string, the jetting device is provided with a mixing chamber having a first inlet in fluid communication with a drilling fluid supply conduit, a second inlet for abrasive particles and an outlet which is in fluid communication with a jetting nozzle arranged to jet a stream of abrasive particles and drilling fluid against at least one of the borehole bottom and the borehole wall. The jetting device is further provided with an abrasive particles recirculation system for separating the abrasive particles from the drilling fluid at a selected location where the stream flows from the at least one of the borehole bottom and the borehole wall towards the upper end of the borehole and for supplying the separated abrasive particles to the second inlet. | ||||||
| 85 | Underbalanced well completion | US149903 | 1998-09-08 | US6152232A | 2000-11-28 | Alan B. Webb; Stuart M. Dennistoun; Wade Meaders |
| Apparatus and associated methods are provided which facilitate underbalanced drilling and completion of wells. In a described embodiment of a well control valve, the valve is opened and closed when a drill string is displaced therethrough. A shifting device is carried on a drill bit and deposited in the valve when the drill string enters and opens the valve. The valve is closed and the shifting device is retrieved from the valve when the drill string is tripped out of the well. A packer hydraulic setting tool usable in conjunction with the well control valve in underbalanced completions is also provided. | ||||||
| 86 | Process and device for simultaneously drilling and lining a hole | US310157 | 1999-05-12 | US6106200A | 2000-08-22 | Josef Mocivnik; Karl Bohm |
| In a process for drilling, in particular rotary percussion or percussion drilling, and lining holes in the ground or rocks, a hole is percussion and/or rotation drilled by a cutter mounted on boring rods and a lining is formed by a jacket tube. During drilling, at least one jacket tube coupled to the cutter is drawn in the axial direction by the cutter into the bore hole and once drilling is finished, the cutter is at least partially removed from the jacket tube together with the boring rods. In a device for drilling, in particular percussion or rotary percussion drilling, and lining holes in the ground or rocks, a cutter mounted on boring rods drills a bore hole by percussion and/or rotary drilling. The cutter is divided in the radial direction. At least one jacket tube which surrounds the boring rods is located at the end of the cutter away from the drilling surface, around the outer circumference of the cutter, and is form-fittingly joined to the cutter by at least one coupling element so as to be drawn in the longitudinal direction of the bore hole. | ||||||
| 87 | Drilling assembly and method of drilling for unstable and depleted formations | US904027 | 1997-07-31 | US5957225A | 1999-09-28 | Lawrence Allen Sinor |
| A method and liner assembly for drilling into unstable or depleted formations is provided that maintains control of the wellbore against caving such as where unconsolidated formations are penetrated and/or minimizes fluid losses such as to underpressured formations where differential pressures exist. The method and liner assembly herein includes the provision of a liner having a portion thereof that is drillable so that after setting of the liner, drilling can continue deeper into the unstable formations with minimal damage to the bit used to drill out the liner drillable portion. In one form, the liner has a shoe that includes cutter mounting blades, each having a set of cutters thereon. Relief slots are formed in the blades between cutters so that as the shoe and its blades are being drilled, the drill bit will cut through the slots, releasing the shoe cutters for transport up to the surface by the drilling fluid thereby minimizing damaging contact of the bit with the shoe cutters. Preferably, the shoe has a bi-center and anti-whirl design. In another form, the liner has preassembled therewith a whipstock and a pre-formed window of drillable material adjacent the whipstock, so that after drilling into the unstable formation with the liner assembly and setting it therein, subsequent drilling beyond the liner occurs by running a drill bit downhole and drilling until it engages the whipstock that guides it to the window for drilling therethrough. | ||||||
| 88 | Bit-stabilized combination coring and drilling system | US311118 | 1994-09-23 | US5568838A | 1996-10-29 | Barry W. Struthers; Pierre E. Collee |
| A core barrel having an inner tube for coring and, alternately, a center plug assembly or closing the throat of the core bit at the bottom of the assembly for drilling in lieu of coring. The inner tube assembly and plug assembly are disposable and retrievable through the drill string on a wireline using an overshot. The core bit is of a stabilized, preferably anti-whirl, design and may be a low-invasion core bit used in cooperation with a low-invasion coring shoe. A logging tool and data transmission assembly may be incorporated in the plug assembly for logging while drilling. | ||||||
| 89 | Drilling with casing and retrievable bit-motor assembly | US387959 | 1995-02-09 | US5472057A | 1995-12-05 | Michael B. Winfree |
| A wellbore is formed in the earth with an elongated, non-rotating tubular drillstem which may consist of a well casing or liner and including an expendable sub and reamer bit part connected to the lower distal end of the drillstem. A retrievable drilling fluid operated motor and drive member assembly are disposed in the drillstem. The motor and drive member include pressure fluid responsive mechanism for engagement with and disengagement from the reamer bit part to rotatably drive the reamer bit part and a central bit part connected to the drive member without rotating the casing type drillstem. The motor, drive member and central bit part may be retracted from the drillstem upon completion of drilling operations without retrieving the expendable reamer bit part. | ||||||
| 90 | Recoverable tunnelling machine | US764545 | 1991-09-24 | US5184918A | 1993-02-09 | Martin Herrenknecht; Werner Suhm; Rainer Griesbaum |
| The tunnelling machine for driving inaccessible tunnels by pressing forward by means of tubes can be moved out again through the tunnel driven by it. For this purpose, an annular outer area (2b) is provided on the extracting tool (2), and one double casing (4b, 6b) each is provided around the control head (4) and the machine tube (6). The outer area (2b) of the extracting tool is connected to its inner area (2a) and the control-head double casing (4b) is connected to the control-head housing (4a) by connecting elements (24, 26). Specifically releasable restraining devices (28) hold the machine-tube double casing (6b) on the machine-tube housing (6a). After the final depth is reached, the control head (4) can be moved back by means of the control devices (40) to such an extent towards the machine tube (6) that the connecting elements (24, 26) are broken. If the restraining devices (28) are then released, the tunnelling machine is separated from the extracting-tool outer area (2b) and the double casings (4b, 6b) and can be withdrawn at withdrawal means (42) provided for this purpose, whereby the tunnelling machine may be recovered for reuse in a simple manner even from tunnels which do not end in a target shaft. | ||||||
| 91 | Resistivity measurement system for drilling with casing | US779651 | 1991-10-21 | US5168942A | 1992-12-08 | Raymond Wydrinski |
| A system for measuring earth formation resistivity while drilling a wellbore through an earth formation using a self-contained drilling assembly supported at the lower end of a casing string. The drilling assembly includes a drilling fluid driven motor driving a drill bit, where the motor and bit are electrically isolated from the casing string. Formation resistivity measuring circuitry is provided in the assembly. Data transmission mechanism is provided for encoding the resistivity data and transmitting it through the drilling fluid to the surface location of the wellbore. | ||||||
| 92 | Latching bit sub | US283196 | 1988-12-12 | US4860838A | 1989-08-29 | Kare Asak |
| A drill bit latch assembly for releasably securing an earth drill bit to the bottom end of a drill string comprises a tubular housing adapted to be secured to the bottom end of a tubular drill string, drill bit holder adapted to be secured to a drill bit, and a latch assembly. The drill bit holder is telescopically movably received in one end of the housing and coupled thereto for rotation with the housing. The latch assembly is telescopically received in the other end of the housing. The latch assembly releasably engages the holder and is operative with the housing for maintaining the holder in a predetermined operative position within the housing. The latch assembly is responsive to an unlatching tool lowered down the drill string to unlatch the holder. | ||||||
| 93 | Downhole shearers | US143453 | 1980-04-24 | US4362217A | 1982-12-07 | Frederick Fletcher |
| The present specification describes and claims a downhole casing shearer for use in drilling bore holes. The casing shearer comprises an elongate, generally cylindrical sub-member which is connected between a drilling bit and a drill rod string and which engages within a hollow cylindrical shearer, the trailing end of the shearer being connected to a conventional bore hole liner, so that the shearer may rotate about its longitudinal axis with the liner stationary. The sub-member and shearer are interlocked by a releasable locking mechanism which prevents relative rotation therebetween but which allows both for the axial drilling pressure to be applied to the shearer and the shearer to be lifted, and for the drilling bit, sub-member and rod string to be lifted through the liner leaving the shearer and liner in the bore hole, when the locking mechanism is released. | ||||||
| 94 | Laser beam drill | US41224073 | 1973-11-02 | US3871485A | 1975-03-18 | KEENAN JR BERNARD J |
| A method of drilling for subterranean fluid with a laser beam comprising positioning a laser beam generator in a wellhole electrically connected to an inhole voltage generator actuated by drilling mud or other liquid passing through a laser beam housing connected to the drill string. A reflecting crystal for the laser beam is positioned within the laser beam housing to reflect the beam preferably in elliptical pattern across the formation to be penetrated.
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| 95 | Positive rotation cleanout apparatus and method | US18887671 | 1971-10-13 | US3809161A | 1974-05-07 | CAROTHERS W |
| Apparatus for retrieving drill pipe, drilling tools, or other equipment stuck in a well bore has a selectively insertable, positively rotating drill bit which can clean out the box end of a collar or tool to enable a fishing string to engage the stuck object, and can clean out the bore of a well pipe to enable lowering therethrough of an explosive charge as an aid to retrieving the stuck object. A method for retrieving drill pipe, drilling tools, or other equipment stuck in a well bore is also provided.
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| 96 | Drilling unit for rotary drilling of wells | US3661218D | 1970-05-21 | US3661218A | 1972-05-09 | BROWN CICERO C |
| A drilling unit for rotary drilling of wells using casing as the drill string. The drilling unit is a self-contained assembly designed to be bodily inserted and withdrawn through the bore of a well casing string and comprises releasable latch means for non-rotatively locking the structure to the casing; a rotary power unit supported by the latch means and rotatively connected to a bit assembly. The latter comprises a main or pilot bit and a plurality of radially extendible and retractable underreamers actuated by fluid pressure which may first be employed for driving the power unit.
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| 97 | Continuous coring jet bit | US3424255D | 1966-11-16 | US3424255A | 1969-01-28 | MORI ERNEST A; SCHAUB PAUL W |
| 98 | Rock drilling equipment | US29376063 | 1963-07-09 | US3277972A | 1966-10-11 | GUNNAR LAGERSTROM |
| 99 | Earth boring equipment including two part rotary cutting head | US25362663 | 1963-01-24 | US3241624A | 1966-03-22 | RASSIEUR CHARLES L |
| 100 | Dual drill bit apparatus | US15399361 | 1961-11-21 | US3169591A | 1965-02-16 | WORTHINGTON JOHN D; OWEN JOHN L |
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