WO2008063072A1 - Assembly for pressure control when drilling and method to control pressure when drilling in a formation with unpredictable high formation pressure - Google Patents
Assembly for pressure control when drilling and method to control pressure when drilling in a formation with unpredictable high formation pressure Download PDFInfo
- Publication number
- WO2008063072A1 WO2008063072A1 PCT/NO2007/000399 NO2007000399W WO2008063072A1 WO 2008063072 A1 WO2008063072 A1 WO 2008063072A1 NO 2007000399 W NO2007000399 W NO 2007000399W WO 2008063072 A1 WO2008063072 A1 WO 2008063072A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- drill string
- drilling
- pressure
- packer
- formation
- Prior art date
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 75
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims description 10
- 239000012530 fluid Substances 0.000 claims abstract description 89
- 238000004891 communication Methods 0.000 claims abstract description 20
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 5
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 5
- 230000002441 reversible effect Effects 0.000 claims abstract description 5
- 238000012546 transfer Methods 0.000 claims abstract description 4
- 239000006187 pill Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000005755 formation reaction Methods 0.000 description 58
- 238000005259 measurement Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000011664 signaling Effects 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012360 testing method Methods 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
- E21B21/08—Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
-
- 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
- E21B21/103—Down-hole by-pass valve arrangements, i.e. between the inside of the drill string and the annulus
Definitions
- the present invention relates to drilling to locate or produce fluid hydrocarbons. More precisely, the invention relates to an assembly for pressure control when drilling underground to locate or produce hydrocarbon and a method for which the assembly is used.
- the assembly is generally of use in situation where the pressure from the well cannot be controlled solely with the help of circulating the drilling fluid and by altering the fluid density, as in when drilling in a formation with unpredictable high formation pressure, whereby the drilling fluid density cannot be adequately increased to control the high formation pressure without fracturing the formation at a more shallower level of the open part of the well.
- a drill bit which is attached to the end of a drill string comprising joined pipe sections, is used.
- the drill bit is rotated against the formation when drilling, whilst the drilling fluids or mud is pumped into the drill string.
- the drilling fluids flow down the drill string, out through the drill bit and up towards the surface through a annulus created between the drill string and the open hole; or for the other parts of the well, between the drill string and the casing, which is cemented to the formation.
- the drill bit is usually rotated by rotating the drill string from the surface, whilst the drill string is suitably stretched, with adequate weight applied to the formation by the drill bit.
- the circulating drilling fluid serve as greasing and aids the removal of the drill solids (cuttings) from the borehole as well as means of controlling the pressure on the formation being drilled through. It is vital that the density of the drilling fluid is such so that the pressure to the formation can be controlled, so that the formation fluid does not uncontrollably stream into the well.
- the density of the drilling fluids in the well should be increased in order to control the unpredictable high formation pressure.
- This can be achieved with the use of equipment to close off the annulus between the drill string and the formation at the bottom at a level just above the formation with the unpredictable high pressure, and combined with opening a way for fluid communication from the drill string to the annulus above the closure of the annulus, and equipment for closing off the fluid communication through the drill string to or from the annulus at level below the closure of the annulus.
- the closure of the annulus is typically done by means of a packer, which is an inflatable device that can be inflated reversibly by means of hydraulics or in some other way.
- the fluid communication between the drill string and the annulus above the packer is typically achieved by means of a circulation valve, which can be opened to provide fluid communication between the drill string and the annulus.
- a circulation valve which can be opened to provide fluid communication between the drill string and the annulus.
- a closing valve At lower level in the drill string, a closing valve may be installed.
- a down-hole blow-out preventer is described together with a user guide in the patent publication US4,588,035. More specifically, there is a description of a device used to close off the drill string at its lower end and to close off the annulus between the drill string and the wall of the borehole by means of an inflatable packer and the subsequent balancing of drilling fluid circulation.
- the packer may be operated when a predetermined difference in pressure exists between the annulus and the drilling fluid column inside the tool.
- Other similar tools with similar functionalities are described in the US patent publications 4367794, 5404953, 4712613 and 3853177.
- the above-mentioned problems are solved by providing an assembly for pressure control when drilling underground to locate or produce hydrocarbons; whereby the drilling is done by means of a drill string with fluid circulation down through the drill string and up through an annulus between the drill string and the open hole or casing, as the underground in the open hole may comprise one or both of: areas with formation strength which is unable to withstand the pressure from the fluid circulation without fracturing and areas with formation pressure which cannot be combined with each other or the fluid circulation pressure without the fluid unintentionally leaking in or out from the above-mentioned areas.
- the assembly is distinguished in that onto the drill string a bottomhole assembly is fitted, comprising: a reversible and expandable packer fitted near to the lower end of the drill string to seal the annulus, controllable from the surface a measuring device for measuring the pressure inside the annulus both above and below the packer, with means to simultaneously transfer the data to the surface, a circulation valve fitted above the packer and controllable from the surface in order to open or close off the communication of fluids between the inside of the drill string and the annulus, a control valve (closing valve) fitted below the circulation valve and controllable from the surface, to open and close off the communication of fluids through the drill string, and a connecting sub located above the packer and controllable from the surface for connecting and un-connecting the drill string.
- the open hole means the lower section of the well where a casing or casing extension still has not yet been cemented.
- Casing also refers to casing extension.
- Controllable from the surface means that the equipment can be operated from the surface with the functional
- Zones with formation density which are unable to absorb the pressure from the fluid circulation without fracturing; and zones with formation pressure which cannot combine with each other or fluid circulation pressure without the fluid unintentionally leaking into or out of the mentioned zones, are all meant to indicate situations where the well pressure cannot be controlled solely by means of traditional fluid circulation and increasing and decreasing of the fluid density. This may be when drilling onto zones with unpredictable high formation pressure, where the fluid density cannot be increased without fracturing the formation at a more shallow level of the open part of the well in the open hole whereby the fluid will leak into the fractured formation. These may be zones in the open hole with unpredictable low formation pressure or low formation density, to which zones the mud may be lost.
- the assembly advantageously comprise a communication/power module for transmitting power from the surface and for transferring measurement and control signals to and from the surface.
- the mentioned module also advantageously has a fitted battery capacity.
- the measurement device for measuring the pressure inside the annulus above and below the packer, together with simultaneous data transfer to the surface also advantageously comprise a device for temperature measurement above and below the packer, and further measurement devices, such as a device for measuring the difference in pressure over the packer; and devices for measuring the flow rate and the composition inside the annulus.
- the measurement device is advantageously fitted in one place, for example above the packer, but with fluid columns from the annulus above and below the packer to respective pressure measuring devices.
- the invention also provides a method for pressure control when drilling in a formation of unpredictable high formation pressure, whereby the density of the drilling fluid cannot adequately be increased to control the formation pressure without fracturing the formation at a more shallow level in the open part of the well, whereby the drilling is carried out by using a drill string with drilling fluid circulation down through the drill string and up through the annulus between the drill string and the open hole or casing; the drill string comprising an assembly in accordance with claim 1 , whereby the annulus closes off by means of a packer in the composition, the fluid communication through the drill string is closed off by means of a control valve on the drill string; drilling fluid circulation is carried out in the borehole above the packer by opening a circulation valve on the drill string and then circulate the drilling fluid with as much density as feasibly possible without fracturing the formation on the open part of the borehole .
- the method is distinguished by: un-connecting the drill string at the connecting sub fitted onto the assembly above the packer and the control valve, a high viscosity pill or gel pill is placed in the borehole straight above the connecting sub by using the drill string before this is withdrawn, casing is hoisted down and cemented to the open part of the borehole, a drill string is brought down the drilling hole in order to drill out from the casing and to clean out from the drilling hole as much as possible of the high viscosity pill down towards the connecting sub, an equipment string with a connecting sub or a fishing sub at the end is guided down into the borehole, circulation is then started for cleaning and balancing the weight of the drilling mud in relation to the pressure below the packer, the equipment string is connected to the connecting sub, the circulation valve is opened and the circulation continues through the circulation valve, and the control valve and the packer are opened during stable conditions and the drilling is continued with the existing equipment; or the drill string is extracted and replaced with a new drill string with a drill bit and possibly a ream or underre
- Figure 1 shows a standard drilling inside a well
- Figure 2 shows drilling in a formation with unpredictable high pressure
- Figure 3 shows the closing off of the annulus
- Figure 4 shows the closing off of the drill string and pressure observation
- Figure 5 shows the circulation of the drilling fluid to increase the drilling fluid density as much as feasibly possible
- Figure 6 shows the drill string being unconnected and the placement of the high viscosity pill above the packer element
- Figure 7 shows the introduction and cementing the casing in the open part of the hole
- Figure 8 shows the drill string being connected
- Figure 9 shows the action before the drilling can be continued with
- Figure 10 shows the continued drilling with the replaced drill string with reduced diameter to the ream or the underream.
- figure 1 illustrates standard drilling in a well, whereby the density of the drilling fluid is circulated through the drill string and back to the surface on the exterior of the drill string, which is sufficient to control the formation pressure inside the well; in other words, the density of the drilling fluid is controlling the formation pressure.
- the assembly used for the drilling is in accordance with the current invention.
- this comprises at the lower end of the drill string, from bottom and upwards: a (pilot) drill bit 1, a measuring device 2 to measure the pressure and temperature inside the annulus (below the packer 4), a reversible control or closing or isolation valve 3 (for example a ball valve) for opening and closing off the fluid communication through the drill string, a reversible and inflatable packer 4 for sealing the annulus, a caliper 5 for measuring of the borehole's diameter, a measuring device 6 to measure the pressure and temperature inside the annulus (above the packer 4), a communication/power module 7 for (possible) power transmission and transferring of measurement data and control signals to and from the surface, a circulation valve 8 (for example a flapper valve or sliding sleeve), which is controllable from the surface in order to open and close off the fluid communication between the inside of the drill sting and the annulus, a connecting sub 9 for connecting and un-connecting the drill string above the connecting sub, a ream 10 (alternatively an
- the equipment fitted to the lower end of the drill string 11 may comprise further units in connection with a standard drilling operation. However, for clarity sake, such further units are not described as it is assumed that these units are familiar to people within this field.
- the drilling illustrated in figure 1, is carried out in a tight formation 12, in this case shale.
- a permeable formation 13 in this case, sandstone; and figure 2 shows that the drilling is continued through the sandstone formation 13, which in this case is a formation with an unpredictable much higher pressure than the pressure the fluid density is controlling at the actual depth; so that the formation fluid from the sandstone formation streams into the well, known as "kick" or a "well kick".
- Figure 2 shows the mentioned inward stream, which is indicated with arrows 14 of a lighter colour than the arrows 15, which indicate the fluid circulation.
- Figure 3 shows that the packer 4 is being inflated in order to close off the fluid communication inside the annulus on the exterior of the drill string.
- Figure 3 it is clearer how the packer is inflated against the formation wall in order to close off the annulus.
- Figure 4 illustrates that the control valve 3 fitted to the drill string is closed off to avoid fluid communication from the high-pressure formation into the drill string.
- the pressure gauges 2 and 6 are used to measure the pressure on top of and below the packer, in order to provide the necessary information regarding adequate fluid density to control the unpredictable high pressure.
- Figure 5 shows the opening of the circulation valve 8 and the circulation inside the well with fluid with as much high density as feasibly possible without fracturing the formation above the packer.
- the arrows 15 indicate this circulation.
- Figure 6 shows the method of connecting the drill string from the connecting sub above the packer and placing a high viscosity pill (alternatively a gel pill) above the packer to avoid dirt or cement around the packer and the connecting sub 9, as this may hinder subsequent operation.
- the drill string is connected from the bottom part of the connecting sub, for example by rotating in the opposite direction from the drilling rotation; or by means of another available method for connecting and unconnecting the drill string.
- the high viscosity pill 16 (alternatively the gel pill) is pumped into place through the drill string; whereas the drill string above the connecting sub 9 is extracted out of the borehole.
- the high viscosity pill 16 (alternatively the gel pill) is a fluid which can be pumped into place, with preferably a higher density than cement, in order for this to stabilise and protect the packer, the connecting sub and other remaining devices.
- Figure 7 shows how the casing is inserted 17 and cemented 18 to the well wall. In this way the open part of the borehole, which is unable to withstand the necessary high fluid weight to control the well, is isolated.
- a drill string is hoisted down into the hole to drill out from the casing to clean the borehole and as much as the high viscosity pill 16 as possible in order to prepare for subsequent operation (not illustrated).
- a device is inserted to first circulate and clean around the connection sub 9; the open hole above the packer is checked to verify that it can withstand adequate increase of the fluid weight, then the fluid weight is adequately increased for subsequent connecting of the equipment above the packer as illustrated by figure 8.
- Figure 9 shows the monitoring of the well pressure above and below the packer 4, so if the fluid pressure above the packer 4 is adequate in relation to the pressure below the packer 4, then fluid communication with the formation below the packer may be established as the control valve is opened, the circulation valve is closed off and the packer contracts.
- the well is then in an adequate overbalance with the new drilling fluid density, and fluid may be circulated to clean the hole and secure the stability of the well before continuing the drilling with the same equipment.
- the latter example is illustrated on Figure 10, where the diameter of the drill bit is the same, whilst the ream, alternatively the underream has reduced diameter for the next hole section.
- the signalling used with the current invention can generally be achieved by any familiar means, for example by means of pulse-echo through the drill string, electro-magnetic signalling, fluid pulse techniques, connecting through the drill string or the compilation of cables.
- Transmission of power is normally achieved by any familiar means, for example by transmission of electrical power through cable or the drill string, placing a fluid operated turbine or battery capacity to the equipment.
- the signalling and the transmission of electrical power may be fitted to the each individual device, but is more advantageously collectively compiled through a power/communication module. It is further possible to combine the various components provided that the functionality as described in claim 1 is retained.
- the assembly according to the invention is generally usable in situations where the pressure of the well cannot be controlled solely by the means of drilling fluid circulation and adjustment of the drilling fluid density, as some of these situations are previously addressed.
- the assembly according to the invention is of course also usable in situations where the fluid circulation and adjustment of the density is enough to control the pressure of the well.
- the packer provides the opportunity to isolate part of the well and therefore simplify the control of the well.
- the pressure status above and below the packer over a period of time may at an early stage provide information on the characteristics of the flow and possible well- kick since the pressure can be monitored in real time with the packer being open and after the packer is set.
- the assembly according to the invention may be combined with equipment for low scale well testing, for example by using the equipment described in the patent publication no. NO 3009396 to which reference is made.
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- 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)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Earth Drilling (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/516,076 US20100006282A1 (en) | 2006-11-23 | 2007-11-12 | Assembly for pressure control when drilling and method to control pressure when drilling in a formation with unpredictable high formation pressure |
BRPI0719073-5A BRPI0719073A2 (en) | 2006-11-23 | 2007-11-12 | PRESSURE CONTROL ASSEMBLY WHEN PUNCHING THE UNDERGROUND TO LOCATE OR PRODUCE HYDROCARBONS, AND PRESSURE CONTROL METHOD WHEN PUNCHING IN A PRESSURE FORMATION WITH HIGH PREVISIBLE TRAINING |
CA002670093A CA2670093A1 (en) | 2006-11-23 | 2007-11-12 | Assembly for pressure control when drilling and method to control pressure when drilling in a formation with unpredictable high formation pressure |
EP07851976A EP2087197A1 (en) | 2006-11-23 | 2007-11-12 | Assembly for pressure control when drilling and method to control pressure when drilling in a formation with unpredictable high formation pressure |
AU2007322444A AU2007322444A1 (en) | 2006-11-23 | 2007-11-12 | Assembly for pressure control when drilling and method to control pressure when drilling in a formation with unpredictable high formation pressure |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20065403 | 2006-11-23 | ||
NO20065403A NO325521B1 (en) | 2006-11-23 | 2006-11-23 | Assembly for pressure control during drilling and method for pressure control during drilling in a formation with unforeseen high formation pressure |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008063072A1 true WO2008063072A1 (en) | 2008-05-29 |
Family
ID=39429929
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/NO2007/000399 WO2008063072A1 (en) | 2006-11-23 | 2007-11-12 | Assembly for pressure control when drilling and method to control pressure when drilling in a formation with unpredictable high formation pressure |
Country Status (7)
Country | Link |
---|---|
US (1) | US20100006282A1 (en) |
EP (1) | EP2087197A1 (en) |
AU (1) | AU2007322444A1 (en) |
BR (1) | BRPI0719073A2 (en) |
CA (1) | CA2670093A1 (en) |
NO (1) | NO325521B1 (en) |
WO (1) | WO2008063072A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013103817A3 (en) * | 2012-01-04 | 2014-03-20 | Saudi Arabian Oil Company | Active drilling measurement and control system for extended reach and complex wells |
WO2014133396A1 (en) * | 2013-02-05 | 2014-09-04 | Tco As | Method and structure for protecting a crushable plug in a pipe section for hydrocarbon production, and use thereof |
US9163481B2 (en) | 2010-09-20 | 2015-10-20 | Weatherford Technology Holdings, Llc | Remotely operated isolation valve |
GB2525396A (en) * | 2014-04-22 | 2015-10-28 | Managed Pressure Operations | Method of operating a drilling system |
US9222350B2 (en) | 2011-06-21 | 2015-12-29 | Diamond Innovations, Inc. | Cutter tool insert having sensing device |
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US7900717B2 (en) * | 2006-12-04 | 2011-03-08 | Baker Hughes Incorporated | Expandable reamers for earth boring applications |
US8657039B2 (en) | 2006-12-04 | 2014-02-25 | Baker Hughes Incorporated | Restriction element trap for use with an actuation element of a downhole apparatus and method of use |
US8297381B2 (en) | 2009-07-13 | 2012-10-30 | Baker Hughes Incorporated | Stabilizer subs for use with expandable reamer apparatus, expandable reamer apparatus including stabilizer subs and related methods |
CN102242606A (en) * | 2011-07-01 | 2011-11-16 | 刘白杨 | Hydraulic pressurizer |
GB2518612B (en) * | 2013-09-25 | 2020-07-15 | Equinor Energy As | Method of sealing a well |
CN111255443B (en) * | 2020-02-20 | 2023-07-25 | 中国石油大学(华东) | Underground gas invasion intelligent control system |
CN111472711B (en) * | 2020-04-13 | 2023-07-28 | 牡丹江市井田石油钻采配件有限公司 | Packer |
CN113250643B (en) * | 2021-06-23 | 2021-10-08 | 中国石油大学(华东) | Control method of dynamic well killing underground intelligent packer |
CN115653536B (en) * | 2022-09-30 | 2024-06-07 | 中国石油天然气集团有限公司 | Circulating pressure control method and system for liquid rubber plug packing production layer in drilling process |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1176531A (en) * | 1967-01-03 | 1970-01-07 | Gils Adrianus Van | A Process and an Apparatus for Bringing Under Control an Unexpectedly Producing Well |
WO2002050398A1 (en) * | 2000-12-18 | 2002-06-27 | Impact Engineering Solutions Limited | Cloded loop fluid-handing system for well drilling |
US20060070772A1 (en) * | 2001-02-15 | 2006-04-06 | Deboer Luc | Method for varying the density of drilling fluids in deep water oil and gas drilling applications |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3503445A (en) * | 1968-04-16 | 1970-03-31 | Exxon Production Research Co | Well control during drilling operations |
US3529665A (en) * | 1968-12-13 | 1970-09-22 | Lynes Inc | Method of testing,treating and isolating formations during drilling |
US3853177A (en) * | 1970-02-19 | 1974-12-10 | Breston M | Automatic subsurface blowout prevention |
US3746097A (en) * | 1970-10-16 | 1973-07-17 | Breston M | Subsurface blowout prevention |
US3908769A (en) * | 1973-01-04 | 1975-09-30 | Shell Oil Co | Method and means for controlling kicks during operations in a borehole penetrating subsurface formations |
US4367794A (en) * | 1980-12-24 | 1983-01-11 | Exxon Production Research Co. | Acoustically actuated downhole blowout preventer |
RO89841A (en) * | 1983-02-04 | 1986-07-30 | Van Gils Adrianus W.,Nl | BLOW-OUT PREVENTER |
US4588035A (en) * | 1983-02-04 | 1986-05-13 | I I. E. Innovation Enterprise Ltd. | Down hole blow out preventer and method of use |
US4733233A (en) * | 1983-06-23 | 1988-03-22 | Teleco Oilfield Services Inc. | Method and apparatus for borehole fluid influx detection |
GB8514887D0 (en) * | 1985-06-12 | 1985-07-17 | Smedvig Peder As | Down-hole blow-out preventers |
US5180015A (en) * | 1990-10-04 | 1993-01-19 | Halliburton Company | Hydraulic lockout device for pressure controlled well tools |
NO180055C (en) * | 1992-10-16 | 1997-02-05 | Norsk Hydro As | Blowout for closing an annulus between a drill string and a well wall when drilling for oil or gas |
CA2133286C (en) * | 1993-09-30 | 2005-08-09 | Gordon Moake | Apparatus and method for measuring a borehole |
CA2268444C (en) * | 1996-10-11 | 2006-08-15 | Baker Hughes Incorporated | Apparatus and method for drilling boreholes |
US6148912A (en) * | 1997-03-25 | 2000-11-21 | Dresser Industries, Inc. | Subsurface measurement apparatus, system, and process for improved well drilling control and production |
NO306418B1 (en) * | 1998-03-23 | 1999-11-01 | Rogalandsforskning | blowout preventer |
US6766703B1 (en) * | 1999-02-05 | 2004-07-27 | Sensor Dynamics Limited | Apparatus and method for enhancing remote sensor performance and utility |
NO309396B1 (en) * | 1999-03-30 | 2001-01-22 | Norske Stats Oljeselskap | Method and system for testing a borehole using a movable plug |
US6790812B2 (en) * | 2001-11-30 | 2004-09-14 | Baker Hughes Incorporated | Acid soluble, high fluid loss pill for lost circulation |
US7012545B2 (en) * | 2002-02-13 | 2006-03-14 | Halliburton Energy Services, Inc. | Annulus pressure operated well monitoring |
US20100170673A1 (en) * | 2009-01-08 | 2010-07-08 | Baker Hughes Incorporated | System and method for downhole blowout prevention |
-
2006
- 2006-11-23 NO NO20065403A patent/NO325521B1/en not_active IP Right Cessation
-
2007
- 2007-11-12 BR BRPI0719073-5A patent/BRPI0719073A2/en not_active IP Right Cessation
- 2007-11-12 WO PCT/NO2007/000399 patent/WO2008063072A1/en active Application Filing
- 2007-11-12 AU AU2007322444A patent/AU2007322444A1/en not_active Abandoned
- 2007-11-12 US US12/516,076 patent/US20100006282A1/en not_active Abandoned
- 2007-11-12 CA CA002670093A patent/CA2670093A1/en not_active Abandoned
- 2007-11-12 EP EP07851976A patent/EP2087197A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1176531A (en) * | 1967-01-03 | 1970-01-07 | Gils Adrianus Van | A Process and an Apparatus for Bringing Under Control an Unexpectedly Producing Well |
WO2002050398A1 (en) * | 2000-12-18 | 2002-06-27 | Impact Engineering Solutions Limited | Cloded loop fluid-handing system for well drilling |
US20060037781A1 (en) * | 2000-12-18 | 2006-02-23 | Impact Engineering Solutions Limited | Drilling system and method |
US20060070772A1 (en) * | 2001-02-15 | 2006-04-06 | Deboer Luc | Method for varying the density of drilling fluids in deep water oil and gas drilling applications |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9163481B2 (en) | 2010-09-20 | 2015-10-20 | Weatherford Technology Holdings, Llc | Remotely operated isolation valve |
US10214999B2 (en) | 2010-09-20 | 2019-02-26 | Weatherford Technology Holdings, Llc | Remotely operated isolation valve |
US10895130B2 (en) | 2010-09-20 | 2021-01-19 | Weatherford Technology Holdings, Llc | Remotely operated isolation valve |
US11773691B2 (en) | 2010-09-20 | 2023-10-03 | Weatherford Technology Holdings, Llc | Remotely operated isolation valve |
US9222350B2 (en) | 2011-06-21 | 2015-12-29 | Diamond Innovations, Inc. | Cutter tool insert having sensing device |
WO2013103817A3 (en) * | 2012-01-04 | 2014-03-20 | Saudi Arabian Oil Company | Active drilling measurement and control system for extended reach and complex wells |
US9404359B2 (en) | 2012-01-04 | 2016-08-02 | Saudi Arabian Oil Company | Active drilling measurement and control system for extended reach and complex wells |
WO2014133396A1 (en) * | 2013-02-05 | 2014-09-04 | Tco As | Method and structure for protecting a crushable plug in a pipe section for hydrocarbon production, and use thereof |
GB2525396A (en) * | 2014-04-22 | 2015-10-28 | Managed Pressure Operations | Method of operating a drilling system |
GB2525396B (en) * | 2014-04-22 | 2020-10-07 | Managed Pressure Operations | Method of operating a drilling system |
Also Published As
Publication number | Publication date |
---|---|
NO20065403L (en) | 2008-05-26 |
BRPI0719073A2 (en) | 2014-05-20 |
NO325521B1 (en) | 2008-06-02 |
EP2087197A1 (en) | 2009-08-12 |
AU2007322444A1 (en) | 2008-05-29 |
CA2670093A1 (en) | 2008-05-29 |
US20100006282A1 (en) | 2010-01-14 |
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