CA2544405A1 - System for drilling oil and gas wells using a concentric drill string to deliver a dual density mud - Google Patents
System for drilling oil and gas wells using a concentric drill string to deliver a dual density mud Download PDFInfo
- Publication number
- CA2544405A1 CA2544405A1 CA002544405A CA2544405A CA2544405A1 CA 2544405 A1 CA2544405 A1 CA 2544405A1 CA 002544405 A CA002544405 A CA 002544405A CA 2544405 A CA2544405 A CA 2544405A CA 2544405 A1 CA2544405 A1 CA 2544405A1
- Authority
- CA
- Canada
- Prior art keywords
- fluid
- drill tube
- drilling
- predetermined density
- wellbore
- 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 63
- 230000009977 dual effect Effects 0.000 title 1
- 239000012530 fluid Substances 0.000 claims abstract 70
- 230000000903 blocking effect Effects 0.000 claims 2
- 230000000630 rising effect Effects 0.000 claims 2
- 238000000926 separation method Methods 0.000 claims 2
- 238000005520 cutting process Methods 0.000 abstract 1
- 239000013535 sea water Substances 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/08—Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
- E21B21/082—Dual gradient systems, i.e. using two hydrostatic gradients or drilling fluid densities
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/08—Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
- E21B21/085—Underbalanced techniques, i.e. where borehole fluid pressure is below formation pressure
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/068—Well heads; Setting-up thereof having provision for introducing objects or fluids into, or removing objects from, wells
- E21B33/076—Well heads; Setting-up thereof having provision for introducing objects or fluids into, or removing objects from, wells specially adapted for underwater installations
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/08—Wipers; Oil savers
- E21B33/085—Rotatable packing means, e.g. rotating blow-out preventers
Abstract
A system for controlling drilling mud density at a location either at the seabed (or just above the seabed) or alternatively below the seabed of wells in offshore and land-based drilling applications is disclosed. The present invention combines a base fluid of lesser/greater density than the drilling fluid required at the drill bit to drill the well to produce a combination return mud in the riser. By combining the appropriate quantities of drilling mud with a light fluid, a riser mud density at or near the density of seawater may be achieved to facilitate transporting the return mud to the surface.
Alternatively, by injecting the appropriate quantities of heavy fluid into a light return mud, the column of return mud may be sufficiently weighted to protect the wellhead. At the surface, the combination return mud is passed through a treatment system to cleanse the mud of drill cuttings and to separate the drilling fluid from the base fluid. The present invention further includes a control unit for manipulating drilling fluid systems and displaying drilling and drilling fluid data.
Alternatively, by injecting the appropriate quantities of heavy fluid into a light return mud, the column of return mud may be sufficiently weighted to protect the wellhead. At the surface, the combination return mud is passed through a treatment system to cleanse the mud of drill cuttings and to separate the drilling fluid from the base fluid. The present invention further includes a control unit for manipulating drilling fluid systems and displaying drilling and drilling fluid data.
Claims (32)
1. A system for controlling the density of a drilling fluid in a wellbore in well drilling operations, comprising:
a first drill tube having a top end and a bottom end, the top end of said first drill tube being located at the surface, the bottom end of said first drill tube being located in the wellbore, said first drill tube for delivering a drilling fluid having a predetermined density from the surface to the wellbore, said first drill tube having a predetermined outer diameter;
and a second drill tube having a top end and a bottom end, the top end of said second drill tube being located at the surface and the bottom end of said second drill tube being located in the wellbore, said second drill tube having a predetermined inner diameter which is greater than the outer diameter of the first drill tube, said second drill tube being arranged such that the first drill tube is contained within the second drill tube to define an annular space between the outer diameter of the first drill tube and the inner diameter of the second drill tube, said second drill tube comprising at least one set of ports for establishing communication between the annular space within the second drill tube and the wellbore, said second drill tube for delivering a base fluid having a predetermined density from the surface to the wellbore via the set of ports to create a combination fluid, said base fluid having a density different than the predetermined density of the drilling fluid, said combination fluid having a predetermined density that is defined by a selected ratio of the drilling fluid and the base fluid, said combination fluid rising to the surface.
a first drill tube having a top end and a bottom end, the top end of said first drill tube being located at the surface, the bottom end of said first drill tube being located in the wellbore, said first drill tube for delivering a drilling fluid having a predetermined density from the surface to the wellbore, said first drill tube having a predetermined outer diameter;
and a second drill tube having a top end and a bottom end, the top end of said second drill tube being located at the surface and the bottom end of said second drill tube being located in the wellbore, said second drill tube having a predetermined inner diameter which is greater than the outer diameter of the first drill tube, said second drill tube being arranged such that the first drill tube is contained within the second drill tube to define an annular space between the outer diameter of the first drill tube and the inner diameter of the second drill tube, said second drill tube comprising at least one set of ports for establishing communication between the annular space within the second drill tube and the wellbore, said second drill tube for delivering a base fluid having a predetermined density from the surface to the wellbore via the set of ports to create a combination fluid, said base fluid having a density different than the predetermined density of the drilling fluid, said combination fluid having a predetermined density that is defined by a selected ratio of the drilling fluid and the base fluid, said combination fluid rising to the surface.
2. The system of claim 1, further comprising:
a drilling device connected to the bottom end of the first drill tube;
a drilling rig located at the surface to facilitate offshore drilling operations; and a riser having an upper end connected to the drilling rig and a lower end connected to the wellbore, said riser for delivering the combination fluid from the wellbore to the drilling rig at the surface.
a drilling device connected to the bottom end of the first drill tube;
a drilling rig located at the surface to facilitate offshore drilling operations; and a riser having an upper end connected to the drilling rig and a lower end connected to the wellbore, said riser for delivering the combination fluid from the wellbore to the drilling rig at the surface.
3. The system of claim 2, further comprising a separation unit located at the surface for separating the combination fluid into a base fluid component and a drilling fluid component.
4. The system of claim 1 wherein the predetermined density of the base fluid is less than the predetermined density of the drilling fluid.
5. The system of claim 4, wherein the predetermined density of the drilling fluid is adapted to facilitate overbalanced drilling operations.
6. The system of claim 1 wherein the predetermined density of the base fluid is greater than the predetermined density of the drilling fluid.
7. The system of claim 6, wherein the predetermined density of the drilling fluid is adapted to facilitate underbalanced drilling operations.
8. The system of claim 6, wherein the predetermined density of the drilling fluid is adapted to facilitate near-balanced drilling operations.
9. The system of claim 2 wherein the predetermined density of the base fluid is less than the predetermined density of the drilling fluid.
10. The system of claim 9, wherein the predetermined density of the drilling fluid is adapted to facilitate overbalanced drilling operations.
11. The system of claim 2 wherein the predetermined density of the base fluid is greater than the predetermined density of the drilling fluid.
12. The system of claim 11, wherein the predetermined density of the drilling fluid is adapted to facilitate underbalanced drilling operations.
13. The system of claim 11, wherein the predetermined density of the drilling fluid is adapted to facilitate near-balanced drilling operations.
14. The system of claim 11, further comprising:
a rotating head device connected to the lower end of the riser, said rotating head device for blocking return flow of the combination fluid from the wellbore into the riser when actuated;
and a return line having an upper end located at the surface and a lower end connected to the rotating head device, said return line for establishing communication between the surface and the wellbore to facilitate delivery of the combination fluid from the wellbore to the surface when the rotating head device is actuated.
a rotating head device connected to the lower end of the riser, said rotating head device for blocking return flow of the combination fluid from the wellbore into the riser when actuated;
and a return line having an upper end located at the surface and a lower end connected to the rotating head device, said return line for establishing communication between the surface and the wellbore to facilitate delivery of the combination fluid from the wellbore to the surface when the rotating head device is actuated.
15. The system of claim 1, wherein the second drill tube comprises a plurality of sets of ports, each set of ports arranged at predetermined axially spaced locations along the length of the second drill tube and being movable between an open port position to establish communication between the annular space within the second drill tube and the wellbore and a closed port position to interrupt communication between the annular space within the second drill tube and the wellbore.
16. The system of claim 15, further comprising means for opening and closing each set of ports in the second drill tube such that the base fluid may be injected into the wellbore at selected depths.
17. A system for controlling the density of a drilling fluid in a wellbore in well drilling operations, comprising:
a first drill tube having a top end and a bottom end, the top end of said first drill tube being located at the surface, the bottom end of said first drill tube being located in the wellbore, said first drill tube having a predetermined outer diameter, said first drill tube comprising at least one set of port channels for establishing communication between the predetermined outer diameter of the first drill tube and the wellbore, said first drill tube for delivering a base fluid having a predetermined density from the surface to the wellbore via the set of port channels; and a second drill tube having a top end and a bottom end, the top end of said second drill tube being located at the surface and the bottom end of said second drill tube being located in the wellbore, said second drill tube having a predetermined inner diameter which is greater than the outer diameter of the first drill tube, said second drill tube being arranged such that the first drill tube is contained within the second drill tube to define an annular space between the outer diameter of the first drill tube and the inner diameter of the second drill tube, said second drill tube for delivering a drilling fluid having a predetermined density from the surface to the wellbore to create a combination fluid, said drilling fluid having a density different than the predetermined density of the base fluid, said combination fluid having a predetermined density that is defined by a selected ratio of the drilling fluid and the base fluid, said combination fluid rising to the surface.
a first drill tube having a top end and a bottom end, the top end of said first drill tube being located at the surface, the bottom end of said first drill tube being located in the wellbore, said first drill tube having a predetermined outer diameter, said first drill tube comprising at least one set of port channels for establishing communication between the predetermined outer diameter of the first drill tube and the wellbore, said first drill tube for delivering a base fluid having a predetermined density from the surface to the wellbore via the set of port channels; and a second drill tube having a top end and a bottom end, the top end of said second drill tube being located at the surface and the bottom end of said second drill tube being located in the wellbore, said second drill tube having a predetermined inner diameter which is greater than the outer diameter of the first drill tube, said second drill tube being arranged such that the first drill tube is contained within the second drill tube to define an annular space between the outer diameter of the first drill tube and the inner diameter of the second drill tube, said second drill tube for delivering a drilling fluid having a predetermined density from the surface to the wellbore to create a combination fluid, said drilling fluid having a density different than the predetermined density of the base fluid, said combination fluid having a predetermined density that is defined by a selected ratio of the drilling fluid and the base fluid, said combination fluid rising to the surface.
18. The system of claim 17, further comprising:
a drilling device connected to the bottom end of the second drill tube;
a drilling rig located at the surface to facilitate offshore drilling operations; and a riser having an upper end connected to the drilling rig and a lower end connected to the wellbore, said riser for delivering the combination fluid from the wellbore to the drilling rig at the surface.
a drilling device connected to the bottom end of the second drill tube;
a drilling rig located at the surface to facilitate offshore drilling operations; and a riser having an upper end connected to the drilling rig and a lower end connected to the wellbore, said riser for delivering the combination fluid from the wellbore to the drilling rig at the surface.
19. The system of claim 18, further comprising a separation unit located at the surface for separating the combination fluid into the base fluid component and the drilling fluid component.
20. The system of claim 17 wherein the predetermined density of the base fluid is less than the predetermined density of the drilling fluid.
21. The system of claim 20, wherein the predetermined density of the drilling fluid is adapted to facilitate overbalanced drilling operations.
22. The system of claim 17 wherein the predetermined density of the base fluid is greater than the predetermined density of the drilling fluid.
23. The system of claim 22, wherein the predetermined density of the drilling fluid is adapted to facilitate underbalanced drilling operations.
24. The system of claim 22, wherein the predetermined density of the drilling fluid is adapted to facilitate near-balanced drilling operations.
25. The system of claim 18 wherein the predetermined density of the base fluid is less than the predetermined density of the drilling fluid.
26. The system of claim 25, wherein the predetermined density of the drilling fluid is adapted to facilitate overbalanced drilling operations.
27. The system of claim 18 wherein the predetermined density of the base fluid is greater than the predetermined density of the drilling fluid.
28. The system of claim 27, wherein the predetermined density of the drilling fluid is adapted to facilitate underbalanced drilling operations.
29. The system of claim 27, wherein the predetermined density of the drilling fluid is adapted to facilitate near-balanced drilling operations.
30. The system of claim 27, further comprising:
a rotating head device connected to the lower end of the riser, said rotating head device for blocking return flow of the combination fluid from the wellbore into the riser when actuated;
and a return line having an upper end located at the surface and a lower end connected to the rotating head device, said return line for establishing communication between the surface and the wellbore to facilitate delivery of the combination fluid from the wellbore to the surface when the rotating head device is actuated.
a rotating head device connected to the lower end of the riser, said rotating head device for blocking return flow of the combination fluid from the wellbore into the riser when actuated;
and a return line having an upper end located at the surface and a lower end connected to the rotating head device, said return line for establishing communication between the surface and the wellbore to facilitate delivery of the combination fluid from the wellbore to the surface when the rotating head device is actuated.
31. The system of claim 17, wherein the first drill tube comprises a plurality of sets of port channels, each set of port channels arranged at predetermined axially spaced locations along the length of the first drill tube and being movable between an open port channel position to establish communication between the outside diameter of the first drill tube and the wellbore and a closed port channel position to interrupt communication between the outside diameter of the first drill tube and the wellbore.
32. The system of claim 31, further comprising means for opening and closing each set of port channels in the first drill tube such that the base fluid may be injected into the wellbore at selected depths.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/696,331 | 2003-10-29 | ||
| US10/696,331 US7093662B2 (en) | 2001-02-15 | 2003-10-29 | System for drilling oil and gas wells using a concentric drill string to deliver a dual density mud |
| PCT/US2004/035977 WO2005062749A2 (en) | 2003-10-29 | 2004-10-29 | System for drilling oil and gas wells using a concentric drill string to deliver a dual density mud |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2544405A1 true CA2544405A1 (en) | 2005-07-14 |
| CA2544405C CA2544405C (en) | 2012-08-07 |
Family
ID=34738956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2544405A Expired - Fee Related CA2544405C (en) | 2003-10-29 | 2004-10-29 | System for drilling oil and gas wells using a concentric drill string to deliver a dual density mud |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7093662B2 (en) |
| EP (1) | EP1682744A4 (en) |
| BR (1) | BRPI0415807A (en) |
| CA (1) | CA2544405C (en) |
| NO (1) | NO20062425L (en) |
| WO (1) | WO2005062749A2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7992655B2 (en) * | 2001-02-15 | 2011-08-09 | Dual Gradient Systems, Llc | Dual gradient drilling method and apparatus with multiple concentric drill tubes and blowout preventers |
| NO318220B1 (en) * | 2003-03-13 | 2005-02-21 | Ocean Riser Systems As | Method and apparatus for performing drilling operations |
| US7950463B2 (en) * | 2003-03-13 | 2011-05-31 | Ocean Riser Systems As | Method and arrangement for removing soils, particles or fluids from the seabed or from great sea depths |
| EP2813664B1 (en) * | 2005-10-20 | 2018-08-22 | Transocean Sedco Forex Ventures Ltd. | Apparatus and method for managed pressure drilling |
| US8066079B2 (en) * | 2006-04-21 | 2011-11-29 | Dual Gradient Systems, L.L.C. | Drill string flow control valves and methods |
| NO325931B1 (en) * | 2006-07-14 | 2008-08-18 | Agr Subsea As | Device and method of flow aid in a pipeline |
| CA2840725C (en) | 2006-11-07 | 2015-12-29 | Charles R. Orbell | Method of pressure testing a riser string |
| WO2008151128A2 (en) * | 2007-06-01 | 2008-12-11 | Horton Technologies, Llc | Dual density mud return system |
| AU2008299076B2 (en) * | 2007-09-13 | 2012-05-17 | M-I Llc | Method and system for injecting a slurry downhole |
| GB2457497B (en) | 2008-02-15 | 2012-08-08 | Pilot Drilling Control Ltd | Flow stop valve |
| EP3425158B1 (en) * | 2008-04-04 | 2020-04-01 | Enhanced Drilling AS | Systems and method for subsea drilling |
| US8281875B2 (en) | 2008-12-19 | 2012-10-09 | Halliburton Energy Services, Inc. | Pressure and flow control in drilling operations |
| US8387705B2 (en) * | 2009-08-12 | 2013-03-05 | Bp Corporation North America Inc. | Systems and methods for running casing into wells drilled with dual-gradient mud systems |
| AU2009351364B2 (en) | 2009-08-18 | 2014-06-05 | Pilot Drilling Control Limited | Flow stop valve |
| CN102575501B (en) | 2009-09-10 | 2015-05-20 | Bp北美公司 | Systems and methods for circulating out a well bore influx in a dual gradient environment |
| EP2550424B1 (en) * | 2010-03-23 | 2020-06-10 | Halliburton Energy Services, Inc. | Apparatus and method for well operations |
| US8820405B2 (en) | 2010-04-27 | 2014-09-02 | Halliburton Energy Services, Inc. | Segregating flowable materials in a well |
| US8201628B2 (en) | 2010-04-27 | 2012-06-19 | Halliburton Energy Services, Inc. | Wellbore pressure control with segregated fluid columns |
| WO2012006110A1 (en) | 2010-07-09 | 2012-01-12 | Halliburton Energy Services, Inc. | Systems and methods for killing a well |
| US9243464B2 (en) | 2011-02-10 | 2016-01-26 | Baker Hughes Incorporated | Flow control device and methods for using same |
| US9249638B2 (en) | 2011-04-08 | 2016-02-02 | Halliburton Energy Services, Inc. | Wellbore pressure control with optimized pressure drilling |
| MY168333A (en) | 2011-04-08 | 2018-10-30 | Halliburton Energy Services Inc | Automatic standpipe pressure control in drilling |
| US9080407B2 (en) | 2011-05-09 | 2015-07-14 | Halliburton Energy Services, Inc. | Pressure and flow control in drilling operations |
| BR112014004638A2 (en) | 2011-09-08 | 2017-03-14 | Halliburton Energy Services Inc | method for maintaining a desired temperature at a location in a well, and, well system |
| US8965703B2 (en) * | 2011-10-03 | 2015-02-24 | Schlumberger Technology Corporation | Applications based on fluid properties measured downhole |
| EP2764197B1 (en) * | 2011-10-04 | 2017-04-26 | Enhanced Drilling AS | System and method for inhibiting an explosive atmosphere in open riser subsea mud return drilling systems |
| US9328575B2 (en) | 2012-01-31 | 2016-05-03 | Weatherford Technology Holdings, Llc | Dual gradient managed pressure drilling |
| AU2012382062B2 (en) | 2012-06-05 | 2016-07-21 | Halliburton Energy Services, Inc. | Methods and systems for performance of subterranean operations using dual string pipes |
| GB2529085B (en) * | 2013-05-31 | 2020-01-22 | Halliburton Energy Services Inc | Well monitoring, sensing, control, and mud logging on dual gradient drilling |
| CA2992882C (en) * | 2015-09-02 | 2020-01-07 | Halliburton Energy Services, Inc. | Software simulation method for estimating fluid positions and pressures in the wellbore for a dual gradient cementing system |
| WO2017044101A1 (en) | 2015-09-10 | 2017-03-16 | Halliburton Energy Services, Inc. | Integrated rotating control device and gas handling system for a marine drilling system |
| CN106323534B (en) * | 2016-08-02 | 2018-08-17 | 东南大学 | A kind of self-drilling type artesian head in-situ testing device and its application method |
| US11913934B2 (en) * | 2020-12-16 | 2024-02-27 | Halliburton Energy Services, Inc. | Systems and methods to determine a characteristic of a drilling fluid |
| US11773677B2 (en) | 2021-12-06 | 2023-10-03 | Saudi Arabian Oil Company | Acid-integrated drill pipe bars to release stuck pipe |
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-
2003
- 2003-10-29 US US10/696,331 patent/US7093662B2/en not_active Expired - Fee Related
-
2004
- 2004-10-29 WO PCT/US2004/035977 patent/WO2005062749A2/en active Application Filing
- 2004-10-29 BR BRPI0415807-5A patent/BRPI0415807A/en not_active IP Right Cessation
- 2004-10-29 CA CA2544405A patent/CA2544405C/en not_active Expired - Fee Related
- 2004-10-29 EP EP04796732A patent/EP1682744A4/en not_active Withdrawn
-
2006
- 2006-05-29 NO NO20062425A patent/NO20062425L/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| BRPI0415807A (en) | 2006-12-26 |
| EP1682744A4 (en) | 2010-07-28 |
| WO2005062749A2 (en) | 2005-07-14 |
| CA2544405C (en) | 2012-08-07 |
| NO20062425L (en) | 2006-05-29 |
| US7093662B2 (en) | 2006-08-22 |
| EP1682744A2 (en) | 2006-07-26 |
| WO2005062749A3 (en) | 2005-09-15 |
| US20040084214A1 (en) | 2004-05-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20181029 |