EP1461510B1 - Verfahren zum bohren eines produktionbohrloches ohne bohrlochperforieren und -packen - Google Patents
Verfahren zum bohren eines produktionbohrloches ohne bohrlochperforieren und -packen Download PDFInfo
- Publication number
- EP1461510B1 EP1461510B1 EP02797431A EP02797431A EP1461510B1 EP 1461510 B1 EP1461510 B1 EP 1461510B1 EP 02797431 A EP02797431 A EP 02797431A EP 02797431 A EP02797431 A EP 02797431A EP 1461510 B1 EP1461510 B1 EP 1461510B1
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- European Patent Office
- Prior art keywords
- formation
- well
- casing
- drilling
- fluid
- 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.)
- Expired - Lifetime
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- 238000005553 drilling Methods 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000012856 packing Methods 0.000 title description 9
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 154
- 239000012530 fluid Substances 0.000 claims abstract description 79
- 238000004519 manufacturing process Methods 0.000 claims abstract description 46
- 238000010276 construction Methods 0.000 claims abstract description 21
- 239000004576 sand Substances 0.000 claims description 19
- 239000002904 solvent Substances 0.000 claims description 8
- 230000002706 hydrostatic effect Effects 0.000 claims description 4
- 239000012065 filter cake Substances 0.000 abstract description 30
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- 229930195733 hydrocarbon Natural products 0.000 description 6
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- 238000005086 pumping Methods 0.000 description 5
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- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 239000000499 gel Substances 0.000 description 3
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Images
Classifications
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- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/04—Gravelling of wells
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/082—Screens comprising porous materials, e.g. prepacked screens
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/11—Perforators; Permeators
Definitions
- This invention relates to a method of well construction and completion. More particularly, this invention relates to a method for placing a means of communication between a productive formation and a well borehole without perforating and gravel packing the well borehole at sites of production. The method also relates to minimizing formation damage caused by conventional drilling, perforating, and gravel packing. The method combines and integrates elements of well drilling and construction with the well completion in a manner to reduce time, improve safety, and maximize productivity.
- One common method of well construction and completion is to drill a borehole with conventional drilling fluids, run casing into the borehole and cement the casing in place, displace the conventional drilling fluids with a clear brine, filter the brine and clean the borehole, run perforating guns in the well and perforate the casing, remove the perforating guns and re-clean the casing, re-filter to the clear brine fluids, run in the well with a gravel pack screen assembly, use high-pressure pumps place gravel pack sand between the gravel pack screen assembly into the perforation tunnels and against the formation face. This is a costly, time-consuming process.
- U5-A-5.505,260 discloses a wellbore completion system which includes extendable pistons projecting outwardly from the casing. Each piston contains an explosion charge, which is detonated when the pistons have been extended.
- Formation damage is also a problem during conventional well construction and completion.
- Conventional drilling fluids can allow filtrate and solid particles to invade the formation causing restriction in the productive pore spaces.
- Another source of formation damage is the shaped charges or explosives used in perforating. The energy from these explosives pushes the casing, cement, and formation aside when creating the perforation tunnel. This causes crushing of the formation matrix reducing the permeability and flow potential of the formation.
- Additional damage can come from the polymer gels used for controlling fluid losses after formation perforation.
- One method currently used to over come formation damage is hydraulic fracturing or frac packing. Frac packing is an attempt to use high-pressure pumping and hydraulic horse power to frac beyond any damage.
- Another method for formation damage mitigation user acid stimulation to try and remove or dissolve formation damage caused by polymer gels or mud particle invasion.
- most mud weighting materials are solid mineral particles such as barite and bentonite that cannot be readily dissolved.
- the gravel pack assembly itself can serve as the restriction in the well borehole. This may cause unnecessary pressure drops which restrict production. Also, the gravel pack assembly may need to be removed for remedial operations. The process of removing an object from a well borehole is called fishing. These operations are costly and time consuming and not always successful resulting in a need to re-drill a portion of, or possibly the entire well.
- Drill-In-Fluids Another common method of well construction and completion is to drill a borehole and not run casing across the productive formation. This type of well construction is termed barefoot or openhole. Openhole completions are generally utilized after horizontal well construction. The most common practice is to run a screen assembly in the openhole section and not gravel pack on the outside of the screen between the screen and the formation. However, there has been an increasing number of openhole horizontal gravel packs performed. Formation damage is mitigated by the use of special drilling fluids termed "Drill-In-Fluids.” A common problem with this type of completion is the inability to isolate areas in the completion that produce water. Water production can increase to a point that limits hydrocarbon production rates.
- the screens run in the horizontal openhole generally contain a sand control filter media.
- the horizontal openhole section can act as a gravity separator during production. Because the unconsolidated formation material is not kept in place with gravel pack sand in the annulus between the screen and formation, it is free to move during production. The produced fluids having a certain velocity will carry smaller formation particles more easily and at a higher velocity than the larger formation particles.
- the filter media is usually designed on the midrange particle size based on the overall particle size distribution of the formation, the smaller formation particles tend to plug the screen's sand control filter media instead of bridging on the surface of the filter media with the larger formation particles. This plugging restricts the production potential of the well and may cause a workover or loss of hydrocarbon recovery from the reservoir.
- the present invention provides a method for drilling and completing a well, where the method achieves improved formation productivity without the need for well perforation and gravel packing.
- the method includes the steps of drilling an interval of a well into or into and through a productive formation in the presence of a fluid system adapted to control fluid loss, to be substantially non-damaging to the productive formation, and to form a filter cake having substantial flow back properties minimizing adverse affects on formation productivity.
- a casing string including at least one and preferably a plurality of laterally extendable members having a sand control medium associated therewith is run into the well so that the members can be deployed to contact sites in the productive interval, i.e., the extendable members are positioned and aligned within the productive formation interval of the well.
- the members are extended such that each member comes into contact with the filter cake and/or the productive formation at their associated sites, where the contacting in sufficient to allow productive formation fluids to flow through the member into the casing and out of the well.
- the members Once the members are deployed forming production conduits between an interior of the casing and the formation, the casing is cemented in place. After casing cementing, production tubing/equipment is run into the well borehole and the well is placed on production.
- the method includes the steps of drilling an interval of a well into or into and through a productive formation in the presence of a fluid system characterized by having a hydrostatic pressure equal to or less than the formation pressure to minimize or eliminate the formation of a filter cake on the formation face, so called under balanced or near balanced drilling.
- a casing string including at least one and preferably a plurality of laterally extendable members having a sand control medium associated therewith is run into the well so that the members can be deployed to contact sites in the productive interval, i.e., the extendable members are positioned and aligned within the productive formation interval of the well.
- the members are extended such that each member comes into contact with the filter cake and/or the productive formation at their associated sites, where the contacting in sufficient to allow productive formation fluids to flow through the member into the casing and out of the well.
- the members Once the members are deployed forming production conduits between an interior of the casing and the formation, the casing is cemented in place. After casing cementing, production tubing/equipment is run into the well borehole and the well is placed on production.
- the method includes the steps of drilling a first interval of a well through non-productive formations in the presence of a first fluid system.
- the first drilling fluid Prior to drilling into or into and through a productive formation, the first drilling fluid is replaced with a second fluid system adapted to control fluid loss, to be substantially non-damaging to the productive formation, and to form a filter cake having substantial flow back properties minimizing adverse affects on formation productivity.
- a second interval of the well is drilled into or into and through a productive formation in the presence of the second fluid system.
- a casing string including at least one and preferably a plurality of laterally extendable members having a sand control medium associated therewith is run into the well so that the members can be deployed to contact sites in the productive interval, i.e., the extendable members are positioned and aligned within the productive formation interval of the well.
- the members are extended such that each member comes into contact with the filter cake and/or the productive formation at their associated sites, where the contacting in sufficient to allow productive formation fluids to flow through the member into the casing and out of the well.
- the casing is cemented in place. After casing cementing, production tubing/equipment is run into the well borehole and the well is placed on production.
- the method includes the steps of drilling a first interval of a well through non-productive formations in the presence of a first fluid system.
- the first drilling fluid Prior to drilling into or into and through a productive formation, the first drilling fluid is replaced with a second fluid system characterized by having a hydrostatic pressure equal to or less than the formation pressure to minimize or eliminate the formation of a filter cake on the formation face.
- a second interval of the well is drilled into or into and through a productive formation in the presence of the second fluid system, so called under balanced or near balanced drilling.
- a casing string including at least one and preferably a plurality of laterally extendable members having a sand control medium associated therewith is run into the well so that the members can be deployed to contact sites in the productive interval, i. e., the extendable members are positioned and aligned within the productive formation interval of the well.
- the members are extended such that each member comes into contact with the filter cake and/or the productive formation at their associated sites, where the contacting in sufficient to allow productive formation fluids to flow through the member into the casing and out of the well.
- the casing is cemented in place. After casing cementing, production tubing/equipment is run into the well borehole and the well is placed on production.
- the various preferred methods of this invention can also include steps designed to remove or reduce the filter cake deposited on the formation face during the drilling operation by pumping a solvent into the well for a time sufficient to remove some or substantially all of the filter pack.
- the filter pack removal step can occur before or after member extension or before or after well cementing.
- the at least one and preferably a plurality of extended members have a sand control medium associated therewith, where the members extend out from the casing and contact sites in a productive formation forming production conduits through which formation fluid flow into an interior of the casing and out of the well.
- the member(s) preferably include a casing fitting, an inner sleeve having inner sleeve stops and an outer sleeve having outer sleeve stops, where the sleeves are movable from a retracted state to an extended state when a sufficient hydraulic pressure is applied to the members.
- a casing including at least one, but preferably a plurality of extendable members adapted to form production conduits between a productive formation and an interior of the casing.
- the members are hydraulically extendable from a retracted stated to an extended state and include a casing fitting, an inner sleeve, inner sleeve stops, an outer sleeve and outer sleeve stops, where the sleeve are movable between the retracted state and the extended state to form a telescoping conduit.
- a distal end of the member is designed to contact a site on a face of a productive formation, where the contact is sufficient to allow fluid flow from the formation through an interior of the extended member and into an interior of the casing.
- Embodiments of the present invention broadly relate to methods for drilling and completing a well including the step of drilling a productive interval of a well with a fluid system selected from the group consisting of a fluid system adapted to control fluid loss, to be substantially non-damaging to the productive formation, and to form a filter cake having substantial flow back properties minimizing adverse affects on formation productivity, a fluid system characterized by having a hydrostatic pressure equal to or less than the formation pressure to minimize or eliminate the formation of a filter cake on the formation face and mixtures or combinations thereof.
- casing including at least one and preferably a plurality of extendable members having a sand control medium associated therewith is run into the well so that the extendable members are positioned and aligned within the productive formation so that when extended the member form production conduits between sites of the productive formation and an interior of the casing.
- the member are extended hydraulically to form the conduits and the casing is cemented in place.
- cementing of the casing can proceed extending of the member to form permeable elements or production conduits.
- Embodiments of the present invention also broadly relate to a completed oil and/or gas well including a casing having at least one, but preferably a plurality of, extendable member formed within sections of the casing, where the sections of the casing are positioned in productive formation so that the extendable members can form production conduits or permeable elements at desired sites within the productive formation once extended.
- Embodiments of the present invention also broadly relate to a producing oil and/or gas well including a casing having at least one, but preferably a plurality of, extendable member formed within sections of the casing, where the sections of the casing are positioned in productive formation and where the extendable members are extended to form production conduits or permeable elements at desired sites within the productive formation.
- the extendable members include a casing fitting adapted to secure the member to a portion of the wall of a casing section, an inner sleeve, an inner sleeve stop, an outer sleeve, an outer sleeve stop and a sand control medium disposed in a distal section of an interior of the inner sleeve, where the sleeves are designed to move from a retracted state to an extended state to form a telescoping conduit and a distal end is designed to contact a site of a productive formation forming a production conduit with the sand control medium interposed between the formation and an inner of the casing.
- the productive formations can be identified during well construction by utilizing logging while drilling tools or openhole electric logs. These tools identify the productive formations depth and thickness of the productive formations.
- the extendable members which will replace the perforation and gravel pack completion are spaced out on the casing string to allow them to be aligned with the productive formations as determine by the well logs. Depending on the expected productivity of the formation generally between 1 and 12 extendable members per foot (per 30.5 cm) may be required to effectively drain a reservoir. In many cases 4 extendable members per foot (per 30.5 cm) will be adequate.
- the casing is then run into the borehole such that the extendable members are positioned opposite the productive formation.
- the extendable members are extended mechanically, or hydraulically or a combination of mechanical and hydraulic means.
- the devices This allows the devices to come in contact with the filter cake and formation face. Also, the devices will help centralize the casing in the borehole. The casing is then cemented. The production tubing/equipment is then run into the well. Depending on the type of "Drill-In Fluid" used in the drilling process, the well may be placed on production or solvents pumped to remove the filter cake. If the well has been drilled in an under balanced or near balanced condition, there should be little if any filter cake to remove.
- Suitable fluid systems for using in drilling the intervals of a well that penetrate into or into and through a productive formation include, without limitation, any fluid system comprising a fluid carrier and particles, where the particles have a particle size distribution for forming a low permeability filter cake on a formation face as the well is drilled and where the particle size distribution is designed so that a majority of the particles in the filter cake flow back into the casing through a sand control filter medium associated with the extendable members and minimizing adverse affects on formation productivity.
- One such fluid system for drilling the productive formation is disclosed in U.S. Pat. No. 5,504,062 to Johnson. Those skilled in the art will recognize that these types of fluid systems have the ability to minimize filtrate and particle invasion into the formation.
- 5,504,062 also discloses, a formulation of particle sizes that protect the formation and flow back through conventional gravel pack media with minimal damage to the production potential of a formation.
- These fluids have been designed for use in openhole well construction; more particularly they are used for openhole horizontal drilling.
- Other fluid systems are disclosed U.S. Pat. No.4,620,596,4,369,843; and 4,186,803 to Mondshine.
- the fluid system includes sized salt particles ; which protect the formation during well construction and workover operations.
- the fluids disclosed by Mondshine have been applied as drilling fluids in horizontal openhole well construction. If the fluids disclosed by Mondshine are used in the present invention, a solvent would be required to reduce the filter cake particle sizes or completely dissolve the salt particles in the filter cake.
- a subsea blowout preventer stack 3 may be positioned on an ocean floor 3a in offshore application.
- the well casing string 45 includes a conductor elements 4, a surface element 5, and an intermediate element 6.
- the casing string is placed in boreholes and then cemented in place.
- drilling of a well borehole 50 is continued to a target reservoir 16.
- the drilling assembly 55 includes of a drill string 7, logging while drilling formation evaluation sensors 8, a drilling motor 9, a drill string stabilizer 10, and a drill bit 11.
- the bottom hole assembly 12 includes the logging while drilling formation evaluation sensors 8, the drilling motor 9, the drill string stabilizer 10, and the drill bit 11.
- the bottom hole assembly 12 has intersected a marker formation 15.
- the marker formation 15 is a selected geological indicator that is reached prior to the borehole 50 intersecting the target formation 16.
- the marker formation 15 provides an indication of the additional drilling depth needed drill from a current bottom hole position 14 to the target formation 16.
- conventional drilling mud is displaced with a "Drill-In Fluid” selected to protect the formation in the target reservoir 16 during drilling into or into and through the target formation 16.
- the "Drill-In Fluid” displaces the conventional mud by pumping the "Drill-In Fluid" into the drill string 7 pushing the conventional drilling fluid out of the borehole 50 via return up an annulus space 13.
- drilling of the borehole 50 is continued and extended into or into and through the target reservoir 16 using the "Drill-In Fluid".
- the bottom of the well 14 is now shown extended through the target reservoir 16.
- the target reservoir 16 has a formation matrix 27 including solid particles 18 and pore spaces 17.
- the pore spaces 17 are the area in the formation that generally contains oil, gas, and/or water.
- FIG 3B an example of what can happen to a formation matrix 28 is graphically depicted if a conventional drilling fluid is used to drill into and through the target reservoir or formation 16.
- a filter cake 19 has been formed from on a face 28a of the matrix 28 and mud filtrate and solid particles have invaded the pore spaces 17 which can cause a reduction in well productivity.
- a formation matrix 29 is shown depicting the use of a "Drill-In Fluid" for drilling within the target reservoir 16, which forms a filter cake 20 with little or no invasion of particulate into the pore spaces 17 protecting the formation matrix 29. This type of fluid will minimize any negative effects on productivity.
- the drill string 7 and bottom hole assembly 12 are pulled from the borehole 50 .
- Casing is run into the well.
- the casing will have extendable members positioned such that when the casing reaches the bottom of the borehole 14 the extendable members are positioned and aligned with sites in the target reservoir 16.
- FIG. 4 a section 21 of the target formation or reservoir 16 is depicted showing an adjacent portion 22a of a casing 22 having an extendable member 23 aligned adjacent a site 21a of the section 21 of the target reservoir 16.
- Figure 4 shows only a single member 23, a plurality of members 23 can be associated with sections of the casing in a spaced apart configuration to provide a plurality of production conduits within the target reservoir 16 depending on the production requirements of the reservoir 16.
- four extendable members per foot (per 30.5 cm) of formation are used to provide an adequate number of production conduits for most formations within producing hydrocarbon reservoirs.
- lesser and greater number of extendable members can be used as well depending on the desired production level.
- the number of extendable members will be between 1 per foot (per 30.5 cm) of formation to about 20 per foot (per 30.5 cm), with between 2 and 10 being preferred and between 3 and 8 being particularly preferred.
- an extendable member 23 is shown in its run position or retracted state.
- the extendable member 23 includes an inner sleeve 30 having an inner sleeve lip 31, an interior 32, a sand control medium 33 disposed in a distal end portion 34 of the interior 32, an outer sleeve 35 having an inner sleeve stop 36 and an outer sleeve lip 37 and a fitting 38 having an outer sleeve stop 39, where the fitting 38 is adapted to attach the member 23 to the casing 22 .
- the annulus 13 may be filled at this point with "Drill-In Fluid" or the "Drill-In Fluid" displaced with a solids free fluid.
- a filter cake 20 protects a face 21b of the formation section 21.
- the extendable member 23 is shown in its extended state, where hydraulic pressure has been used to force a distal end 40 of the member 23 in contact with a portion 25 of the filter cake 20 associated with the site 21a of the section 21 of the formation 16.
- the well is now ready to be cemented.
- annulus 13 is shown filled with a cement 24 isolating the section 21 of the formation 16, except for flow control points associated with the extendable members 23. At this point production tubing/equipment is run into the well and the well made ready for production.
- the formation section 21 is shown producing through an interior 32 of the extendable member 23. It should be noted that fluid 26 produced from formation section 21 has removed the portion 25 of the filter cake 20 in the area constrained by the extendable member 23. The produce fluids 26 travel through the interior 32 of the extendable member 23 into an interior 22b of the casing 22. The produced fluids 26 continue up the casing 22 and eventually enter the production tubing. The produced fluids 26 which may contain oil, gas, and/or water flow to the surface via the production tubing for processing and/or sale. Should production not reach expected levels quickly enough a solvent may be used to facilitate filter cake removal.
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- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Earth Drilling (AREA)
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Claims (11)
- Verfahren zum Bauen und Fertigstellen eines Bohrlochs, bei welchem- mit einem Fluidsystem ein Bohrloch in eine Zielformation oder in ein Zielreservoir (16) gebohrt wird,- in das Bohrloch eine Futterrohrkolonne (45) eingeführt wird, die wenigstens ein derart ausfahrbares Element (23) aufweist, dass das Element (23) angrenzend an eine Stelle (21a) in der Zielformation oder in dem Zielreservoir (16) positioniert wird,- das wenigstens eine ausfahrbare Element (23) ausgefahren wird, bis es die Stelle (21a) in der Zielformation oder in dem Zielreservoir (16) berührt, und- das Bohrloch auf Produktion gesetzt wird,dadurch gekennzeichnet,- dass das wenigstens eine ausfahrbare Element (23) an seinem distalen Ende (40) ein Sandkontrollmedium (33) aufweist.
- Verfahren nach Anspruch 1, bei welchem das Fluidsystem einen hydrostatischen Druck hat, der kleiner als der Druck der Zielformation oder des Zielreservoirs (16) oder diesem Druck entspricht.
- Verfahren nach Anspruch 1 oder 2, bei welchem das Fluidsystem ein "Drill-In Fluid" ist.
- Verfahren nach Anspruch 1, 2 oder 3, welches weiterhin den Schritt aufweist, ein Lösungsmittel durch das Bohrloch vor dem Schritt des Auf-Produktion-Setzens zirkulieren zu lassen.
- Verfahren nach einem vorhergehenden Anspruch, welches weiterhin den Schritt aufweist, ein Lösungsmittel durch das Bohrloch nach dem Schritt des Auf-Produktion-Setzens zirkulieren zu lassen.
- Verfahren nach einem vorhergehenden Anspruch, welches weiterhin den Schritt aufweist, das Futterrohr (22) zu zementieren.
- Verfahren nach Anspruch 6, bei welchem der Ausfahrschritt vor dem Zementierschritt ausgeführt wird.
- Verfahren nach Anspruch 6, bei welchem der Ausfahrschritt nach dem Zementierschritt ausgeführt wird.
- Verfahren zum Bauen und Fertigstellen eines Bohrlochs, bei welchem- mit einem ersten Fluidsystem ein Bohrloch bis zu einer Stelle über einer Zielformation oder einem Zielreservoir (16) gebohrt wird,- das erste Fluidsystem durch ein zweites Fluidsystem verdrängt wird und- der restliche Teil des Bohrlochs unter Verwendung des Verfahrens nach einem vorhergehenden Anspruch in die Zielformation oder das Zielreservoir (16) gebohrt wird.
- Verfahren nach Anspruch 9, bei welchem das erste Fluidsystem ein herkömmliches Bohrspülmittel ist.
- Verfahren nach Anspruch 9 oder 10, bei welchem das zweite Fluidsystem ein "Drill-In Fluid" ist.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06021293A EP1772589A1 (de) | 2001-12-18 | 2002-12-18 | Verfahren zum Bohren eines Produktionbohrloches ohne Bohrlochperforieren und -packen |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US34177901P | 2001-12-18 | 2001-12-18 | |
US341779P | 2001-12-18 | ||
PCT/US2002/040696 WO2003052238A1 (en) | 2001-12-18 | 2002-12-18 | A drilling method for maintaining productivity while eliminating perforating and gravel packing |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06021293A Division EP1772589A1 (de) | 2001-12-18 | 2002-12-18 | Verfahren zum Bohren eines Produktionbohrloches ohne Bohrlochperforieren und -packen |
Publications (2)
Publication Number | Publication Date |
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EP1461510A1 EP1461510A1 (de) | 2004-09-29 |
EP1461510B1 true EP1461510B1 (de) | 2007-04-18 |
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Application Number | Title | Priority Date | Filing Date |
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EP02797431A Expired - Lifetime EP1461510B1 (de) | 2001-12-18 | 2002-12-18 | Verfahren zum bohren eines produktionbohrloches ohne bohrlochperforieren und -packen |
EP06021293A Withdrawn EP1772589A1 (de) | 2001-12-18 | 2002-12-18 | Verfahren zum Bohren eines Produktionbohrloches ohne Bohrlochperforieren und -packen |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06021293A Withdrawn EP1772589A1 (de) | 2001-12-18 | 2002-12-18 | Verfahren zum Bohren eines Produktionbohrloches ohne Bohrlochperforieren und -packen |
Country Status (8)
Country | Link |
---|---|
US (1) | US20060108114A1 (de) |
EP (2) | EP1461510B1 (de) |
AT (1) | ATE360133T1 (de) |
AU (1) | AU2002361794A1 (de) |
CA (1) | CA2471261A1 (de) |
DE (1) | DE60219689T2 (de) |
NO (1) | NO20042783L (de) |
WO (1) | WO2003052238A1 (de) |
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CN113585969B (zh) * | 2021-08-19 | 2024-07-02 | 北京中煤矿山工程有限公司 | 浅覆土富水砂卵石地层长距离水平冻结钻孔泥浆保压钻进方法 |
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-
2002
- 2002-12-18 DE DE60219689T patent/DE60219689T2/de not_active Expired - Fee Related
- 2002-12-18 EP EP02797431A patent/EP1461510B1/de not_active Expired - Lifetime
- 2002-12-18 WO PCT/US2002/040696 patent/WO2003052238A1/en active IP Right Grant
- 2002-12-18 EP EP06021293A patent/EP1772589A1/de not_active Withdrawn
- 2002-12-18 AT AT02797431T patent/ATE360133T1/de not_active IP Right Cessation
- 2002-12-18 US US10/499,112 patent/US20060108114A1/en not_active Abandoned
- 2002-12-18 CA CA002471261A patent/CA2471261A1/en not_active Abandoned
- 2002-12-18 AU AU2002361794A patent/AU2002361794A1/en not_active Abandoned
-
2004
- 2004-07-01 NO NO20042783A patent/NO20042783L/no not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
NO20042783L (no) | 2004-08-27 |
DE60219689D1 (de) | 2007-05-31 |
ATE360133T1 (de) | 2007-05-15 |
EP1461510A1 (de) | 2004-09-29 |
CA2471261A1 (en) | 2003-06-26 |
WO2003052238A1 (en) | 2003-06-26 |
EP1772589A1 (de) | 2007-04-11 |
DE60219689T2 (de) | 2008-01-17 |
AU2002361794A1 (en) | 2003-06-30 |
US20060108114A1 (en) | 2006-05-25 |
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