GB2611702A - Apparatus, assembly and method for drilling a borehole - Google Patents
Apparatus, assembly and method for drilling a borehole Download PDFInfo
- Publication number
- GB2611702A GB2611702A GB2300807.1A GB202300807A GB2611702A GB 2611702 A GB2611702 A GB 2611702A GB 202300807 A GB202300807 A GB 202300807A GB 2611702 A GB2611702 A GB 2611702A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tubular string
- motors
- drill pipe
- drill bit
- drillable
- 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.)
- Withdrawn
Links
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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
- E21B7/208—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes using down-hole 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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/16—Plural down-hole drives, e.g. for combined percussion and rotary drilling; Drives for multi-bit drilling units
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
An apparatus for driving a drillable drill bit of a drilling assembly and a method of manufacturing of the apparatus for driving the drillable drill bit is provided. The apparatus employs a drilling assembly that includes one of a casing string or a tubular string suspendable in a borehole and a drill pipe housed within one of the casing string or the tubular string. The drillable drill bit is fixed at the bottom of the drill pipe. The drilling assembly further includes a plurality of motors mounted circumferentially on the one of casing string or tubular string, wherein the plurality of motors is attached to wall of the one of casing string or tubular string and are partially outside the one of casing string or tubular string in the borehole, and the plurality of motors are configured to drive the drillable drill bit.
Claims (19)
1. An apparatus for driving a drillable drill bit, comprising: a tubular string suspendable in a borehole; a drill pipe housed within the tubular string, wherein a bottom of the drill pipe is configured for fixing to the drillable drill bit; and a plurality of motors mounted circumferentially on the tubular string, the plurality of motors is configured to drive the drillable drill bit, wherein the plurality of motors are attached to a wall of the tubular string and are located partially outside the tubular string.
2. The apparatus of claim 1, wherein the tubular string comprises or takes the form of a casing string, liner string or production tubing string.
3. The apparatus of claim 1 or 2, wherein each of the plurality of motors comprises a respective drive shaft.
4. The apparatus of claim 3, further comprising a transmission arrangement comprising a driver component and driven component, wherein the driver component is rotatably mounted on at least one drive shaft of the plurality of motors and the driven component is rotatably mounted on the drill pipe.
5. The apparatus of claim 4, wherein the transmission arrangement comprises or takes the form of a gear assembly.
6. The apparatus of any preceding claim, wherein the plurality of motors are downhole motors.
7. The apparatus of claim 4, 5 or 6, wherein the plurality of motors are powered by pressure and/or flow of a drilling fluid pumped through the tubular string, said drilling fluid causing the driver component mounted on at least one drive shaft of the plurality of motors to drive the driven component mounted on the drill pipe.
8. The apparatus of claim 7, further comprising at least one plug mounted internally on the tubular string, wherein the at least one plug is configured to divert the drilling fluid into the plurality of motors.
9. The apparatus of any preceding claim, wherein the drill pipe is movably, e.g. rotatably, attached to the tubular string via one or more bearings.
10. A method of manufacturing an apparatus for driving a drillable drill bit, comprising: suspending a tubular string in a borehole; positioning a drill pipe within the tubular string; and mounting a plurality of motors circumferentially on the tubular string, wherein the plurality of motors is configured to drive the drillable drill bit, and wherein the plurality of motors is attached to wall of the tubular string and are located partially outside the tubular string.
11. The method of claim 10, further comprising rotatably mounting a driver component of a transmission arrangement on at least one drive shaft of the plurality of motors and a driven component of the transmission arrangement on the drill pipe.
12. The method of claim 10 or 11, further comprising mounting at least one plug internally on the tubular string, wherein the at least one plug is configured to divert drilling fluid into the plurality of motors.
13. The method of claim 10, 11 or 12, comprising movably, e.g. rotatably, attaching the drill pipe to the tubular string via one or more bearings.
14. A drilling assembly, comprising: the apparatus of any one of claims 1 to 9; and a drillable drill bit fixed to a bottom of the drill pipe, wherein the drillable drill bit is configured to drill the borehole.
15. A method of manufacturing a drilling assembly for driving a drillable drill bit, comprising: suspending a tubular string in a borehole; positioning a drill pipe within the tubular string; fixing the drillable drill bit to the bottom of the drill pipe; and mounting a plurality of motors circumferentially on the tubular string, wherein the plurality of motors is configured to drive the drillable drill bit, and wherein the plurality of motors is attached to wall of the tubular string and are located partially outside the tubular string.
16. The method of claim 15, further comprising rotatably mounting a driver component of a transmission arrangement on at least one drive shaft of the plurality of motors and a driven component of the transmission arrangement on the drill pipe.
17. The method of claim 15 or 16, further comprising mounting at least one plug internally on the tubular string, wherein the at least one plug is configured to divert drilling fluid into the plurality of motors.
18. The method of claim 15, 16 or 17, comprising movably, e.g. rotatably, attaching the drill pipe to the tubular string via one or more bearings.
19. Use of the drilling assembly of claim 14 to drill and/or ream a borehole.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/GB2020/051712 WO2022013515A1 (en) | 2020-07-16 | 2020-07-16 | Apparatus, assembly and method for drilling a borehole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB202300807D0 GB202300807D0 (en) | 2023-03-08 |
| GB2611702A true GB2611702A (en) | 2023-04-12 |
Family
ID=71950670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2300807.1A Withdrawn GB2611702A (en) | 2020-07-16 | 2020-07-16 | Apparatus, assembly and method for drilling a borehole |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB2611702A (en) |
| WO (1) | WO2022013515A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB938191A (en) * | 1960-06-09 | 1963-10-02 | Bade & Co Gmbh | Method and equipment for sinking a pipe casing |
| DE2808206A1 (en) * | 1977-03-03 | 1978-09-07 | Me Co Gruppi Perforazioni | SELF-SINKING DRILL BIT FOR SOIL EXCAVATIONS IN GENERAL |
| US20050126826A1 (en) * | 2003-12-12 | 2005-06-16 | Moriarty Keith A. | Directional casing and liner drilling with mud motor |
-
2020
- 2020-07-16 WO PCT/GB2020/051712 patent/WO2022013515A1/en not_active Ceased
- 2020-07-16 GB GB2300807.1A patent/GB2611702A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB938191A (en) * | 1960-06-09 | 1963-10-02 | Bade & Co Gmbh | Method and equipment for sinking a pipe casing |
| DE2808206A1 (en) * | 1977-03-03 | 1978-09-07 | Me Co Gruppi Perforazioni | SELF-SINKING DRILL BIT FOR SOIL EXCAVATIONS IN GENERAL |
| US20050126826A1 (en) * | 2003-12-12 | 2005-06-16 | Moriarty Keith A. | Directional casing and liner drilling with mud motor |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022013515A1 (en) | 2022-01-20 |
| GB202300807D0 (en) | 2023-03-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |