WO2004005667A1 - Choke for controlling the flow of drilling mud - Google Patents
Choke for controlling the flow of drilling mud Download PDFInfo
- Publication number
- WO2004005667A1 WO2004005667A1 PCT/EP2003/006750 EP0306750W WO2004005667A1 WO 2004005667 A1 WO2004005667 A1 WO 2004005667A1 EP 0306750 W EP0306750 W EP 0306750W WO 2004005667 A1 WO2004005667 A1 WO 2004005667A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- drilling
- drilling fluid
- well bore
- choke
- choking
- Prior art date
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 84
- 239000012530 fluid Substances 0.000 claims abstract description 46
- 238000005086 pumping Methods 0.000 claims abstract description 9
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 4
- 238000011010 flushing procedure Methods 0.000 claims description 2
- 230000002457 bidirectional effect Effects 0.000 claims 1
- 239000011435 rock Substances 0.000 description 2
- 230000001105 regulatory effect Effects 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
- 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
- E21B21/106—Valve arrangements outside the borehole, e.g. kelly valves
Definitions
- the invention relates to a drilling system for drilling a well bore into an earth formation, comprising:
- drilling fluid outlet system for retrieving drilling fluid from the well bore.
- Such a drilling system is for example known from WO-00 79092.
- the drilling fluid outlet system is used to maintain control over the fluid pressure at the well bore wall, especially when drilling is stopped or during tripping of the drill string out of the bore hole. Without maintaining control over the pressure, there is a potential danger that undesired fluid flows from the earth formation into the bore hole, or that the borehole wall collapses.
- the pressure is controlled by pumping fluid into the bore hole, via the annulus.
- a drilling fluid outlet system could further comprise a safety choke, in case the pump fails.
- the safety choke could get clogged or could be damaged, which jeopardises correct control over the pressure in the well bore.
- This object is achieved by a drilling fluid outlet system comprising choke means for choking the returned flow of retrieved drilling fluid and alternating means for alternating the flow direction through the choke means .
- the drilling fluid outlet system comprises an inlet and an outlet
- the choke means comprise a first inlet/outlet connection, a second outlet/inlet connection and the alternating means connect the inlet alternatingly to the first or second connection and the outlet alternatingly to the second or first connection. So with these alternating means it is possible to connect the choke means such that the inlet is used as an inlet or outlet and that at the same time the outlet is used as outlet or inlet.
- filter means are arranged in the first and second connection of the choke means.
- the alternating means comprise a four way valve, having four connections and wherein the connections are connected two by two. With such a valve, which could be actuated automatically, alternating of the flow is performed quickly. This will provide a minimum interruption of the flow.
- the drilling fluid outlet system comprises an accumulator. This accumulator secures a constant flow at the moment that the flow direction is alternated.
- the choking means comprises a bi-directional choke.
- a bi-directional choke provides a choking action in both flow directions. This provides for a compact design.
- the choking means comprise at least two uni-directional chokes.
- Such uni-directional chokes provide a choking action in only one flow direction. Therefore two chokes are necessary to provide a choking action in both flow directions.
- the invention relates also to a drilling fluid outlet system.
- the invention in another aspect relates to a method of drilling a well bore into an earth formation.
- the method comprises: - drilling the well bore by operating drilling means;
- Figure 2 shows a schematic view of a first embodiment of a drilling fluid outlet system according to the invention.
- Figure 3 shows a second embodiment of a drilling fluid outlet system according to the invention.
- Figure 1 shows a schematic view of a drilling system 1 according to the invention. With this drilling system 1 a well bore 2 is drilled into the earth formation 3.
- the drilling system 1 comprises a frame 4 onto which a fluid chamber 5 is slidably arranged along a guide 6.
- a drill string 7 with on its bottom end a drill bit 8 is rotated by a top drive 9 in order to drill the well bore 2.
- the well bore 2 is partially lined with a casing 10.
- the drill string 7 is composes out of a plurality of drill string joints 11, which are interconnected by connectors 12a en 12b.
- Drill mud contained in a reservoir 13 is pumped by pump 14 into the drill string 7 to the drill bit 8.
- the drilling mud 10 flows into the annulus between the well bore wall and the drill string 7 upwards.
- the annulus is closed off by a rotating blow out preventer 15.
- the drilling mud is returned via pipe 16 and drilling fluid outlet system 17 back to the reservoir 13.
- the drilling fluid outlet system 17 ensures that a certain pressure is maintained in the well bore 2 by choking the flow in the pipe 16.
- the system 17 comprises a valve 20 and a bi-directional choke 21. In the position of the valve 20 as shown in figure 2 the inlet pipe 16 is connected to the first connection pipe 22 of the choke 21. The outlet pipe 19 is connected to the second connection 23 of the choke 21.
- FIG. 3 a second embodiment 30 of a drilling fluid outlet system according to the invention is shown.
- the system 30 again comprises a valve 31 and two unidirectional chokes 32 and 33.
- Such chokes 32,33 have a choking action in just one flow direction.
- the system 30 comprises filter means 34,35 which filter large debris in the mud, which could damage the chokes 32,33.
- an accumulator 36 is connected, which ensures that a constant flow is maintained while the flow direction of the system 30 is alternated by turning the valve 31. Upon alternating the flow direction of the system 30 any debris present on the filter means 34,35 or in the chokes 32,33 is flushed away through outlet pipe 19.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0428285A GB2405891B (en) | 2002-07-08 | 2003-06-24 | Choke for controlling the flow of drilling mud |
CA002491925A CA2491925A1 (en) | 2002-07-08 | 2003-06-24 | Choke for controlling the flow of drilling mud |
US10/520,606 US20060086538A1 (en) | 2002-07-08 | 2003-06-24 | Choke for controlling the flow of drilling mud |
AU2003242762A AU2003242762A1 (en) | 2002-07-08 | 2003-06-24 | Choke for controlling the flow of drilling mud |
US11/769,540 US20070240875A1 (en) | 2002-07-08 | 2007-06-27 | Choke for controlling the flow of drilling mud |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02254746.7 | 2002-07-08 | ||
EP02254746 | 2002-07-08 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/769,540 Continuation US20070240875A1 (en) | 2002-07-08 | 2007-06-27 | Choke for controlling the flow of drilling mud |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004005667A1 true WO2004005667A1 (en) | 2004-01-15 |
Family
ID=30011236
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/006750 WO2004005667A1 (en) | 2002-07-08 | 2003-06-24 | Choke for controlling the flow of drilling mud |
Country Status (5)
Country | Link |
---|---|
US (2) | US20060086538A1 (en) |
AU (1) | AU2003242762A1 (en) |
CA (1) | CA2491925A1 (en) |
GB (1) | GB2405891B (en) |
WO (1) | WO2004005667A1 (en) |
Cited By (36)
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US7185719B2 (en) | 2002-02-20 | 2007-03-06 | Shell Oil Company | Dynamic annular pressure control apparatus and method |
US7350597B2 (en) | 2003-08-19 | 2008-04-01 | At-Balance Americas Llc | Drilling system and method |
US8201628B2 (en) | 2010-04-27 | 2012-06-19 | Halliburton Energy Services, Inc. | Wellbore pressure control with segregated fluid columns |
US8281875B2 (en) | 2008-12-19 | 2012-10-09 | Halliburton Energy Services, Inc. | Pressure and flow control in drilling operations |
WO2011151446A3 (en) * | 2010-06-03 | 2012-12-27 | Statoil Petroleum As | System and method for passing matter in a flow passage |
US8739863B2 (en) | 2010-11-20 | 2014-06-03 | Halliburton Energy Services, Inc. | Remote operation of a rotating control device bearing clamp |
US8776894B2 (en) | 2006-11-07 | 2014-07-15 | Halliburton Energy Services, Inc. | Offshore universal riser system |
US8820405B2 (en) | 2010-04-27 | 2014-09-02 | Halliburton Energy Services, Inc. | Segregating flowable materials in a well |
US8833488B2 (en) | 2011-04-08 | 2014-09-16 | 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 |
US9163473B2 (en) | 2010-11-20 | 2015-10-20 | Halliburton Energy Services, Inc. | Remote operation of a rotating control device bearing clamp and safety latch |
US9169700B2 (en) | 2010-02-25 | 2015-10-27 | Halliburton Energy Services, Inc. | Pressure control device with remote orientation relative to a rig |
US9567843B2 (en) | 2009-07-30 | 2017-02-14 | Halliburton Energy Services, Inc. | Well drilling methods with event detection |
US9605507B2 (en) | 2011-09-08 | 2017-03-28 | Halliburton Energy Services, Inc. | High temperature drilling with lower temperature rated tools |
US9823373B2 (en) | 2012-11-08 | 2017-11-21 | Halliburton Energy Services, Inc. | Acoustic telemetry with distributed acoustic sensing system |
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US8955619B2 (en) * | 2002-05-28 | 2015-02-17 | Weatherford/Lamb, Inc. | Managed pressure drilling |
US7350590B2 (en) | 2002-11-05 | 2008-04-01 | Weatherford/Lamb, Inc. | Instrumentation for a downhole deployment valve |
US7413018B2 (en) * | 2002-11-05 | 2008-08-19 | Weatherford/Lamb, Inc. | Apparatus for wellbore communication |
US7407019B2 (en) * | 2005-03-16 | 2008-08-05 | Weatherford Canada Partnership | Method of dynamically controlling open hole pressure in a wellbore using wellhead pressure control |
US7836973B2 (en) * | 2005-10-20 | 2010-11-23 | Weatherford/Lamb, Inc. | Annulus pressure control drilling systems and methods |
CA2829779C (en) * | 2011-03-31 | 2017-07-25 | National Oilwell Varco Norway As | Method and device for preventing a mud relief valve from incorrect opening |
US9249638B2 (en) | 2011-04-08 | 2016-02-02 | Halliburton Energy Services, Inc. | Wellbore pressure control with optimized pressure drilling |
US9447647B2 (en) | 2011-11-08 | 2016-09-20 | Halliburton Energy Services, Inc. | Preemptive setpoint pressure offset for flow diversion in drilling operations |
US9134291B2 (en) * | 2012-01-26 | 2015-09-15 | Halliburton Energy Services, Inc. | Systems, methods and devices for analyzing drilling fluid |
US10000981B2 (en) | 2014-03-21 | 2018-06-19 | Canrig Drilling Technologies Ltd. | Back pressure control system |
CA2949675C (en) * | 2014-05-19 | 2022-10-25 | Danny Spencer | A system for controlling wellbore pressure during pump shutdowns |
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US10830009B2 (en) | 2015-05-06 | 2020-11-10 | Schlumberger Technology Corporation | Continuous mud circulation during drilling operations |
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US10590719B2 (en) * | 2017-02-23 | 2020-03-17 | Cameron International Corporation | Manifold assembly for a mineral extraction system |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3354970A (en) * | 1965-02-08 | 1967-11-28 | Pan American Petroleum Corp | Controlling high-pressure wells while drilling |
US3365009A (en) * | 1966-07-12 | 1968-01-23 | Gerald E. Burnham | Drilling fluid circulation system having flow parameter regulating means |
US3508577A (en) * | 1967-04-05 | 1970-04-28 | Pan American Petroleum Corp | Blowout control valve for drilling well |
US4630675A (en) * | 1985-05-28 | 1986-12-23 | Smith International Inc. | Drilling choke pressure limiting control system |
EP0947750A2 (en) * | 1998-04-03 | 1999-10-06 | Cemi Piscine Service S.r.l. | Five-way butterfly valve |
Family Cites Families (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2684688A (en) * | 1949-03-02 | 1954-07-27 | Thornhill Craver Company Inc | Automatic valve and system |
US3443643A (en) * | 1966-12-30 | 1969-05-13 | Cameron Iron Works Inc | Apparatus for controlling the pressure in a well |
US3528577A (en) * | 1968-08-13 | 1970-09-15 | Irving B Rose | Lift and dump device |
US3677353A (en) * | 1970-07-15 | 1972-07-18 | Cameron Iron Works Inc | Apparatus for controlling well pressure |
US3827511A (en) * | 1972-12-18 | 1974-08-06 | Cameron Iron Works Inc | Apparatus for controlling well pressure |
US4044834A (en) * | 1975-04-09 | 1977-08-30 | Perkins Lee E | Apparatus and method for controlling the flow of fluids from a well bore |
US4257442A (en) * | 1976-09-27 | 1981-03-24 | Claycomb Jack R | Choke for controlling the flow of drilling mud |
US4133768A (en) * | 1978-03-31 | 1979-01-09 | Theriot Joseph G | Flow choke filter for oil and gas wells |
US4377177A (en) * | 1979-04-16 | 1983-03-22 | Claycomb Jack R | Throttling mud choke apparatus |
DK150665C (en) * | 1985-04-11 | 1987-11-30 | Einar Dyhr | THROTTLE VALVE FOR REGULATING THROUGH FLOW AND THEN REAR PRESSURE I |
US4700739A (en) * | 1985-11-14 | 1987-10-20 | Smith International, Inc. | Pneumatic well casing pressure regulating system |
US4653597A (en) * | 1985-12-05 | 1987-03-31 | Atlantic Richfield Company | Method for circulating and maintaining drilling mud in a wellbore |
FR2641320B1 (en) * | 1988-12-30 | 1991-05-03 | Inst Francais Du Petrole | REMOTE EQUIPMENT OPERATION DEVICE COMPRISING A NEEDLE-NEEDLE SYSTEM |
US5010966A (en) * | 1990-04-16 | 1991-04-30 | Chalkbus, Inc. | Drilling method |
US5305836A (en) * | 1992-04-08 | 1994-04-26 | Baroid Technology, Inc. | System and method for controlling drill bit usage and well plan |
FR2699222B1 (en) * | 1992-12-14 | 1995-02-24 | Inst Francais Du Petrole | Device and method for remote actuation of equipment comprising timing means - Application to a drilling rig. |
CA2094313C (en) * | 1993-04-19 | 1999-08-24 | Bobbie Joe Bowden | Automatic drilling system |
US6035952A (en) * | 1996-05-03 | 2000-03-14 | Baker Hughes Incorporated | Closed loop fluid-handling system for use during drilling of wellbores |
US5857522A (en) * | 1996-05-03 | 1999-01-12 | Baker Hughes Incorporated | Fluid handling system for use in drilling of wellbores |
US5890549A (en) * | 1996-12-23 | 1999-04-06 | Sprehe; Paul Robert | Well drilling system with closed circulation of gas drilling fluid and fire suppression apparatus |
US6148912A (en) * | 1997-03-25 | 2000-11-21 | Dresser Industries, Inc. | Subsurface measurement apparatus, system, and process for improved well drilling control and production |
US6176323B1 (en) * | 1997-06-27 | 2001-01-23 | Baker Hughes Incorporated | Drilling systems with sensors for determining properties of drilling fluid downhole |
US6119772A (en) * | 1997-07-14 | 2000-09-19 | Pruet; Glen | Continuous flow cylinder for maintaining drilling fluid circulation while connecting drill string joints |
US6325159B1 (en) * | 1998-03-27 | 2001-12-04 | Hydril Company | Offshore drilling system |
US6119779A (en) * | 1998-11-09 | 2000-09-19 | Atlantic Richfield Company | Method and system for separating and disposing of solids from produced fluids |
GC0000342A (en) * | 1999-06-22 | 2007-03-31 | Shell Int Research | Drilling system |
US6412554B1 (en) * | 2000-03-14 | 2002-07-02 | Weatherford/Lamb, Inc. | Wellbore circulation system |
US6374925B1 (en) * | 2000-09-22 | 2002-04-23 | Varco Shaffer, Inc. | Well drilling method and system |
US6394195B1 (en) * | 2000-12-06 | 2002-05-28 | The Texas A&M University System | Methods for the dynamic shut-in of a subsea mudlift drilling system |
US20020112888A1 (en) * | 2000-12-18 | 2002-08-22 | Christian Leuchtenberg | Drilling system and method |
US6484816B1 (en) * | 2001-01-26 | 2002-11-26 | Martin-Decker Totco, Inc. | Method and system for controlling well bore pressure |
AU2002253976A1 (en) * | 2001-02-23 | 2002-09-12 | Exxonmobil Upstream Research Company | Method and apparatus for controlling bottom-hole pressure during dual-gradient drilling |
US6575244B2 (en) * | 2001-07-31 | 2003-06-10 | M-I L.L.C. | System for controlling the operating pressures within a subterranean borehole |
US6904981B2 (en) * | 2002-02-20 | 2005-06-14 | Shell Oil Company | Dynamic annular pressure control apparatus and method |
US20050006150A1 (en) * | 2003-07-07 | 2005-01-13 | Power Chokes, L.P. | Solids strainer system for a hydraulic choke |
US20050092523A1 (en) * | 2003-10-30 | 2005-05-05 | Power Chokes, L.P. | Well pressure control system |
-
2003
- 2003-06-24 US US10/520,606 patent/US20060086538A1/en not_active Abandoned
- 2003-06-24 GB GB0428285A patent/GB2405891B/en not_active Expired - Fee Related
- 2003-06-24 WO PCT/EP2003/006750 patent/WO2004005667A1/en not_active Application Discontinuation
- 2003-06-24 CA CA002491925A patent/CA2491925A1/en not_active Abandoned
- 2003-06-24 AU AU2003242762A patent/AU2003242762A1/en not_active Abandoned
-
2007
- 2007-06-27 US US11/769,540 patent/US20070240875A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3354970A (en) * | 1965-02-08 | 1967-11-28 | Pan American Petroleum Corp | Controlling high-pressure wells while drilling |
US3365009A (en) * | 1966-07-12 | 1968-01-23 | Gerald E. Burnham | Drilling fluid circulation system having flow parameter regulating means |
US3508577A (en) * | 1967-04-05 | 1970-04-28 | Pan American Petroleum Corp | Blowout control valve for drilling well |
US4630675A (en) * | 1985-05-28 | 1986-12-23 | Smith International Inc. | Drilling choke pressure limiting control system |
EP0947750A2 (en) * | 1998-04-03 | 1999-10-06 | Cemi Piscine Service S.r.l. | Five-way butterfly valve |
Cited By (55)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7185719B2 (en) | 2002-02-20 | 2007-03-06 | Shell Oil Company | Dynamic annular pressure control apparatus and method |
US7350597B2 (en) | 2003-08-19 | 2008-04-01 | At-Balance Americas Llc | Drilling system and method |
US7395878B2 (en) | 2003-08-19 | 2008-07-08 | At-Balance Americas, Llc | Drilling system and method |
US9157285B2 (en) | 2006-11-07 | 2015-10-13 | Halliburton Energy Services, Inc. | Offshore drilling method |
US9376870B2 (en) | 2006-11-07 | 2016-06-28 | Halliburton Energy Services, Inc. | Offshore universal riser system |
US8881831B2 (en) | 2006-11-07 | 2014-11-11 | Halliburton Energy Services, Inc. | Offshore universal riser system |
US9127512B2 (en) | 2006-11-07 | 2015-09-08 | Halliburton Energy Services, Inc. | Offshore drilling method |
US9127511B2 (en) | 2006-11-07 | 2015-09-08 | Halliburton Energy Services, Inc. | Offshore universal riser system |
US9085940B2 (en) | 2006-11-07 | 2015-07-21 | Halliburton Energy Services, Inc. | Offshore universal riser system |
US8776894B2 (en) | 2006-11-07 | 2014-07-15 | Halliburton Energy Services, Inc. | Offshore universal riser system |
US9051790B2 (en) | 2006-11-07 | 2015-06-09 | Halliburton Energy Services, Inc. | Offshore drilling method |
US8887814B2 (en) | 2006-11-07 | 2014-11-18 | Halliburton Energy Services, Inc. | Offshore universal riser system |
US8281875B2 (en) | 2008-12-19 | 2012-10-09 | Halliburton Energy Services, Inc. | Pressure and flow control in drilling operations |
US9567843B2 (en) | 2009-07-30 | 2017-02-14 | Halliburton Energy Services, Inc. | Well drilling methods with event detection |
US8286730B2 (en) | 2009-12-15 | 2012-10-16 | Halliburton Energy Services, Inc. | Pressure and flow control in drilling operations |
US8397836B2 (en) | 2009-12-15 | 2013-03-19 | Halliburton Energy Services, Inc. | Pressure and flow control in drilling operations |
US9169700B2 (en) | 2010-02-25 | 2015-10-27 | Halliburton Energy Services, Inc. | Pressure control device with remote orientation relative to a rig |
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 |
US8261826B2 (en) | 2010-04-27 | 2012-09-11 | Halliburton Energy Services, Inc. | Wellbore pressure control with segregated fluid columns |
US9346634B2 (en) | 2010-06-03 | 2016-05-24 | Statoil Petroleum As | System and method for passing matter in a flow passage |
AU2011260230B2 (en) * | 2010-06-03 | 2015-07-09 | Equinor Energy As | System and method for passing matter in a flow passage |
WO2011151446A3 (en) * | 2010-06-03 | 2012-12-27 | Statoil Petroleum As | System and method for passing matter in a flow passage |
EA025889B1 (en) * | 2010-06-03 | 2017-02-28 | Статойл Петролеум Ас | System and method for passing matter in a flow passage |
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Publication number | Publication date |
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GB2405891A (en) | 2005-03-16 |
US20060086538A1 (en) | 2006-04-27 |
AU2003242762A1 (en) | 2004-01-23 |
CA2491925A1 (en) | 2004-01-15 |
GB2405891B (en) | 2005-11-16 |
US20070240875A1 (en) | 2007-10-18 |
GB0428285D0 (en) | 2005-01-26 |
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