EP2737154A1 - Drilling device and method for using the same - Google Patents
Drilling device and method for using the sameInfo
- Publication number
- EP2737154A1 EP2737154A1 EP13781335.8A EP13781335A EP2737154A1 EP 2737154 A1 EP2737154 A1 EP 2737154A1 EP 13781335 A EP13781335 A EP 13781335A EP 2737154 A1 EP2737154 A1 EP 2737154A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drill string
- borehole
- accordance
- outside
- drill
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 239000012530 fluid Substances 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/04—Electric drives
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/20—Flexible or articulated drilling pipes, e.g. flexible or articulated rods, pipes or cables
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/22—Handling reeled pipe or rod units, e.g. flexible drilling pipes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/046—Directional drilling horizontal drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/06—Deflecting the direction of boreholes
- E21B7/068—Deflecting the direction of boreholes drilled by a down-hole drilling motor
Definitions
- the present invention concerns a drilling device. More specifically the invention concerns a drilling device with a non-rotating drill string, the device comprising a drill bit connected to the distal end of the drill string, a drilling machine fixed to the drill string and arranged to be able to rotate the drill bit, and a back rig arranged to be able to run the drill string into and out of a borehole.
- the invention also concerns a method for using the device.
- Drill strings in accordance with prior art consist of pipe sections with threaded connections. Fluid is supplied to the drill bit through a centric bore in the drill string. In addition to transmitting torque from a drilling motor, the drill string is also to transmit axial pushing force from a pushing device, a so-called back rig, from the surface and to the drill bit. Drill strings in accordance with prior art thus should have both high rigidity and low weight. As the drill string is screwed together from pipe sections with central bores for fluid transportation, the circulation of fluid must be discontinued upon insertion of each new pipe section. This may be very unfortunate for the drilling process as cuttings may get stuck in the borehole. Connecting and disconnecting pipe sections to/from the drill string is time consuming, and further requires expensive threaded connections between the pipe sections. Modern requirements for efficiency and directional control for drilling processes make more continuous processes and communication desirable.
- the patent publication WO 2005/121494 Al discloses a drilling device assigned to a non-rotating drill string assembled from pipe sections.
- the drill string is run into and out of a borehole by means of a back rig.
- a water hose is connected to the drill string to transport water therethrough to a drill bit powered by a drilling machine, while a cable for energy supply is connected to the outside of the drill string.
- the patent publication WO 2011/046444 Al discloses a drilling device where a drilling machine in a borehole is added drilling fluid, power and control signals through flexible lines or cables respectively, where the lines and cables may be coiled up on reels outside of the borehole.
- the patent publication US 3301581 A discloses a drilling device, where a rotating drill string is assembled from pipe sections connected by means of bolt connections.
- the invention has for its object to remedy or reduce at least one of the drawbacks of prior art, or at least to provide a useful alternative to prior art.
- the invention concerns a drilling device with a non-rotating drill string, the device comprising :
- a back rig arranged to be able to lead the drill string into and out of a borehole, characterized in the device further comprising;
- a power- and signal-cable arranged to be able to be run from the outside and into the borehole together with the drill string.
- the drill string may be composed of steel sections. This may be standardized, commercially available steel profiles of per se known types, as for instance H-beams. Thus, drill strings may be provided without having to thread together pipe sections with centric bores. Drill strings with a non-circular section, may thus be provided, which will make possible a very effective and inexpensive connection of pipe sections.
- the steel sections may be connected by means of bolt connections.
- the bolt connections may be of per se known types.
- the water hose may be wound up on a reel on the outside of the borehole.
- a continuous water hose may easily be run into the borehole together with the drill string, without having to interrupt the water circulation upon insertion of new drill string sections to the drill string.
- the cable for transferring power and/or communication to the drilling machines may also be wound up on a reel on the outside of the borehole.
- the two different reels may be arranged on opposite sides of the drill string.
- the device may comprise a locking device for fixing the drill string on insertion of new drill string sections to the drill string. This can be appropriate in order to ensure proper connection between subsequent drill string sections.
- the locking device may comprise a latch pawl connected to a hydraulic cylinder an arranged to be able to engage with holes or recesses in the drill string in order to keep it fixed.
- the drill string may be provided with knobs for centring the drill string in the borehole. This may be especially appropriate for drill strings provided with a non-circular section centrally placed in the borehole.
- the invention concerns a method for drilling a borehole by means of a non-rotating drill string, the method comprising the following steps:
- the method may further comprise to assemble the drill string by means of steel sections such as H-beams.
- the steel sections may, as mentioned above, be connected by means of bolt connections of per se known type.
- One embodiment may further comprise to wind up the water hose on a reel on the outside of the borehole, and correspondingly wind up the cable for transferring power and signals on another reel, the two reels possibly being arranged on opposite sides of the drill string.
- FIG. 1 is a perspective view of a drilling device in accordance with the present invention
- Fig. 2 is a perspective view, and shown in a larger scale than in Figure 1, of details of the device in Figure 1 ;
- Fig. 3 is a perspective view, and shown in a larger scale than in Figure 1, of further details of the device in Figure 1;
- Fig. 4 is a perspective view, and shown in a larger scale than in Figure 1, of further details of the device in Figure 1;
- Fig. 5 is a perspective view, and shown in a larger scale than in Figure 1, of details of the device in Figure 1.
- the reference numeral 1 indicates a rock formation in which a borehole 10 is being drilled by means of a drill bit 2 connected to the distal end of a drill string 8.
- a drilling machine 3, connected to the drill string 8, is arranged to be able to rotate the drill bit 2 in the borehole 10.
- the drill string 8 is in the embodiment shown formed by connected H-beam sections.
- Axial force to the drill bit 2, in a direction 26 indicated by an arrow in Figure 1 is transmitted from a back rig 28 outside of the borehole 10 via the drill string 8.
- the better view of the back rig is in Figure 5.
- the back rig 28 is built up by steel structures 12, where the one end of the steel structures 12 is provided with an adapter 13 arranged to be able to be moved back and forth in a direction 29.
- the adapter 13 is provided with sliding plates 27 slidingly abutting the steel structures 12.
- the movement of the adapter 13 along the steel structures 12 is provided by a hydraulic cylinder 20 connected to the steel structures 12 spaced from the adapter 13.
- the device also comprises a locking device 11 arranged to be able to keep the drill string 8 in a fixed position while new drill string sections are connected to the drill string 8, for example by means of bolt connections 19 as shown in detail in Figure 3.
- the locking device 11 comprises an outer steel structure 30 wherein a latching pawl 15 is pivotably supported around a bolt connection 16.
- the latching pawl is arranged to be able to be pivoted by a hydraulic cylinder 14.
- the distal end of the latching pawl 15 is provided with a locking knob 17 arranged to be able to engage with a hole 18 in the drill string 8, and thus keep the drill string 8 fixed.
- the locking knob 17 is withdrawn from the hole 18 to release the drill string 8.
- the drill string 8 is provided with knobs 21 arranged to be able to center the drill string 8 in the borehole 10.
- a water hose 23 is wound up on a reel 4, while a power- and control-cable 24 is wound up on a reel 5.
- the water hose 23 and the power- and control-cable 24 may thus be placed protected into a groove in the drill string 8.
- the grooves are the natural, axially running recesses of the H-beam. Water, power and communication may thus be continuously transmitted to the drill bit 2 and the drilling machine 3, also on fas- i o tening of new drill string sections to the drill string 8.
- power- and control-cable 24 may be connected to the drill string 8 by means of per se known connecting means.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20120473A NO334472B1 (en) | 2012-04-23 | 2012-04-23 | Device for drilling and method using the same |
PCT/NO2013/050068 WO2013162377A1 (en) | 2012-04-23 | 2013-04-23 | Drilling device and method for using the same |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2737154A1 true EP2737154A1 (en) | 2014-06-04 |
EP2737154A4 EP2737154A4 (en) | 2016-01-13 |
EP2737154B1 EP2737154B1 (en) | 2016-10-19 |
Family
ID=49483554
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13781335.8A Not-in-force EP2737154B1 (en) | 2012-04-23 | 2013-04-23 | Drilling device and method for using the same |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2737154B1 (en) |
NO (1) | NO334472B1 (en) |
WO (1) | WO2013162377A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO344923B1 (en) * | 2018-12-19 | 2020-06-29 | Norhard As | System and procedure for interconnection and separation of drill string sections |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2677535A (en) | 1950-02-17 | 1954-05-04 | Paul V Malloy | Mine roof support beam with wall drilling end |
US3301581A (en) * | 1965-09-30 | 1967-01-31 | Robbins & Assoc James S | Drilling shafts |
US3888319A (en) * | 1973-11-26 | 1975-06-10 | Continental Oil Co | Control system for a drilling apparatus |
US4040494A (en) * | 1975-06-09 | 1977-08-09 | Smith International, Inc. | Drill director |
US4281723A (en) * | 1980-02-22 | 1981-08-04 | Conoco, Inc. | Control system for a drilling apparatus |
NO322195B1 (en) * | 2004-06-11 | 2006-08-28 | Sira Kvina Kraftselskap | Device by rock drill. |
NO332477B1 (en) * | 2009-10-13 | 2012-09-24 | Norwegian Hard Rock Drilling As | Rock drilling machine with self-propelled reamer |
-
2012
- 2012-04-23 NO NO20120473A patent/NO334472B1/en not_active IP Right Cessation
-
2013
- 2013-04-23 EP EP13781335.8A patent/EP2737154B1/en not_active Not-in-force
- 2013-04-23 WO PCT/NO2013/050068 patent/WO2013162377A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
NO20120473A1 (en) | 2013-10-24 |
WO2013162377A1 (en) | 2013-10-31 |
EP2737154A4 (en) | 2016-01-13 |
EP2737154B1 (en) | 2016-10-19 |
NO334472B1 (en) | 2014-03-17 |
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