EP2192262B1 - Zementierkorb - Google Patents
Zementierkorb Download PDFInfo
- Publication number
- EP2192262B1 EP2192262B1 EP08170190A EP08170190A EP2192262B1 EP 2192262 B1 EP2192262 B1 EP 2192262B1 EP 08170190 A EP08170190 A EP 08170190A EP 08170190 A EP08170190 A EP 08170190A EP 2192262 B1 EP2192262 B1 EP 2192262B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- dump bailer
- swabbing
- tool body
- pressure
- 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.)
- Not-in-force
Links
- 239000012530 fluid Substances 0.000 claims description 42
- 230000007246 mechanism Effects 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 13
- 239000004568 cement Substances 0.000 description 9
- 239000002002 slurry Substances 0.000 description 6
- 230000005484 gravity Effects 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 238000010304 firing Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000002360 explosive Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000012459 cleaning agent Substances 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Images
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
- E21B27/00—Containers for collecting or depositing substances in boreholes or wells, e.g. bailers, baskets or buckets for collecting mud or sand; Drill bits with means for collecting substances, e.g. valve drill bits
- E21B27/02—Dump bailers, i.e. containers for depositing substances, e.g. cement or acids
Definitions
- This invention relates to a borehole tool assembly for use in depositing materials in boreholes drilled in an underground formation.
- the invention relates to dump bailers for use in boreholes such as oil and gas wells.
- Dump bailers have been developed to remove debris or solids deposits from the wellbore prior to completing some other task, or to obtain a sample of the fluid from the area of a downhole device, by utilizing a suction action similar to a bicycle pump. Later developments of bailers became available to deposit cements or chemicals into a wellbore by simply reversing the action. However, these bailers do not positively displace their contents in the true sense, typically relying on gravity.
- a dump-bailer tool normally includes a tubular chamber for storing the cement slurry and a ported valve for the slurry to discharge from the dump-bailer into the subterranean wellbore.
- Dump-bailer tools are well known in the oil and gas industry. They essentially include of a thin wall concentric fluid chamber consisting of threaded bailer tube sections. The upper end of the tubes is connected mechanically to an armoured or solid cable that is spooled on a surface winch. The lower end of the tool consists of electrical and/or mechanical dump release mechanisms, for example a bull-plug which supports and confines the cement slurry during conveyance into the wellbore.
- the bull-plug consists of a valve device or rupture plug, which is initiated at the proper dump depth by human interface either electrically, hydraulically, or mechanically initiated.
- the dump bailer method expels the cement slurry at a bridge plug or other barrier device in the well casing, possibly above perforations to the reservoir formation through the casing, prior to making new perforations.
- the slurry volume capacity of the dump-bailer device is limited by the length and internal diameter of the bailer tubes. Typical dump-bailer volumetric capacities range from 4.5 to 27 Litres (one to six imperial gallons). After each dump of slurry, the dump bailer is retrieved to the surface and prepared for subsequent dump-bail operations.
- Positive displacement dump bailer systems have been previously proposed. These typically run on electric line and release a weight onto a piston which applies a pressure shock through the cement which shears a pin at the bottom of the bailer which allows the cement to fall out the bottom of the bailer either under its own weight or with the additional weight of the actuating system.
- One known device uses a motor to release the weight and another uses a solenoid.
- One variation uses an explosive bolt which has a similar function as the solenoid.
- Another known bailer is activated either by a timer or by a pressure transducer, but again only uses gravity to displace the contents to the wellbore.
- U.S. 2,994,378 discloses a method for treating a well with a drill string.
- U.S. 3,020,961 discloses a chemical injector that includes a tubular container provided with a chamber for holding the fluid for treating the tubing. One outlet orifice is provided in the container adapted to be placed in communication with the chamber. Means are provide for normally preventing the flow of the fluid from the chamber to the outlet orifice. Pressure responsive means disposed in the chamber are used for opening the normally closed means for preventing flow to the orifice from the chamber. When the pressure responsive means are actuated, the chemical is injected from the chamber and through the orifice to be sprayed upon the inside of the well tubing.
- a first aspect of the invention provides a dump bailer according to claim 1.
- the valve is operable to direct pressurised fluid to act directly on the swabbing piston.
- the supply of pressurised fluid can comprise a reservoir carried on the swabbing piston so as to be moveable therewith.
- a sliding seal is provided on an inner wall of the tool body, and the first stage piston comprises a head end that seals against the inner wall of the tool body, and a tail end that has a smaller diameter than the head end and seals in the sliding seal.
- the supply of pressurised fluid can comprise a reservoir defined between the head end of the first stage piston and the sliding seal on the tool body and sliding movement of the first stage piston in the tool body can cause the reservoir to change in volume.
- the interior of the tool body below the sliding seal is open to ambient pressure.
- the interior of the tool body above the head end of the first stage piston can open to ambient pressure or a supplementary supply of pressurised fluid can be connected to the interior of the tool body above the head end of the first stage piston by means of a valve.
- the pressurised fluid is pressurised by the effect of the ambient pressure acting on it.
- the second stage piston is typically mechanically connected to the swabbing piston, and the first stage piston defines a cylinder in which the second stage piston is mounted and into which the valve can release pressurised fluid to drive the second stage piston along the cylinder which in turn drives the swabbing piston along the chamber.
- the portion of the cylinder below the second stage piston can be maintained at an internal pressure that is less than the pressure of the fluid in the supply when the tool is in an ambient operating pressure environment.
- the outlet typically comprises a relief valve that is normally held in a shut position until the pressure in the chamber rises above an opening pressure due to the action of the swabbing piston.
- the outlet comprises an end fitting having an opening in a predetermined azimuthal position on the tool circumference.
- the end fitting has a number of openings at azimuthal positions on the tool circumference.
- the end fitting can be freely rotatable. In which case a drive mechanism to rotate the end fitting powered by the flow of fluid from the chamber can be provided.
- the piston system of the present invention is preferably driven by pressure differentials, for example between ambient operating pressure and reduced pressure in the tool, or elevated pressures in to tool.
- FIG. 1 One embodiment of the invention is shown in Figure 1 , in which the dump bailer comprises a ram assembly is designed to operate by using the difference between surrounding wellbore fluid pressure and a void volume in the tool to apply force to a piston.
- the dump bailer comprises a ram assembly is designed to operate by using the difference between surrounding wellbore fluid pressure and a void volume in the tool to apply force to a piston.
- the dump bailer of Figure 1 comprises a tool body 10 that can be connected to a conveyance system (not shown) such as a wireline cable, coiled tubing or drill pipe, and lowered into a well.
- the tool body comprises a lower section defining a chamber 12 for containing the fluid to be deposited in the well, and an upper section 14 comprising an actuating mechanism that will be discussed in more detail below.
- An outlet 16 is formed at the lower end of the chamber 12 and is held normally closed by a spring loaded relief valve 18 or other means such as a shear pin.
- a swabbing piston 20 is mounted in the chamber so as to be slideable along the chamber to drive any fluid contained therein through the outlet 16.
- a sliding seal 22 is formed on the inner wall of the tool body 10 and defines the top of the chamber 12 and the bottom of the upper section 14.
- a vent 24 is provided in the tool body 10 below the sliding seal 22 and above the swabbing piston 20 so that there is pressure communication between this space and the ambient pressure surrounding the bailer.
- the actuating mechanism in the upper section 14 comprises a two-stage piston that is mechanically connected to the swabbing piston 20.
- a first stage piston 26 is mounted so as to be slideable inside the upper section 14.
- the first stage piston 26 has a head end 28 that seals against the inner wall of the tool body 10, and a lower end 30 that is reduced in diameter with respect to the head end and defines a cylinder 32.
- the lower end 30 projects through the sliding seal 22.
- a second stage piston 34 is mounted sildeably in the cylinder 32 and is connected to the swabbing piston 20 by means of a connecting rod 36.
- a passageway 40 connects the reservoir 38 to the upper end of the cylinder 32.
- a valve 42 is provided in the passageway 40.
- a further vent 44 is provided in the tool body 10 above the head end 28 so that there is also pressure communication between this space and the ambient pressure surrounding the bailer.
- valve 42 can be positioned at the point where the vent 44 is described above, and the passageway 40 will remain as an open channel.
- the space in the cylinder below the second stage piston 34 is not filled with working fluid, but contains either air or another gas at or near atmospheric pressure, or, in an alternative can be completely or partially evacuated.
- pressure communication through the vents 24, 44 means that the difference in areas at 22 and 26, on which ambient pressure is acting, causes the working fluid within reservoir 38 to be higher than the ambient pressure around the tool. At a downhole location, this will be substantially above atmospheric pressure.
- the second stage piston 34 With the second stage piston 34 at the top of the cylinder 32 and with the valve 42 closed, the second stage piston 34 moves little, if at all, to adopt an equilibrium position in which the pressure above the second stage piston 34 is the same as that below it. As all pressures in the various sections are balanced and there is no way for the different pressure to equalise (the valve 42 being closed), the swabbing piston 20 does not move.
- valve 42 When it is desired to evacuate the chamber 12, the valve 42 is opened. This allows working fluid from the reservoir 38 at ambient pressure to enter the cylinder above the second stage piston 34. Since this is a substantially higher pressure than is found below the second stage piston 34, it is driven downwards, pushing the swabbing piston along the chamber 13. The pressure exerted on the fluid in the chamber 12 by the swabbing piston 20 overcomes the force of the spring in the relief valve 18 and the fluids are deposited in the well.
- the first stage piston 26 advances along the upper section 14 to accommodate the reduction in volume of fluid in the reservoir while maintaining ambient pressure. This will continue until either the second stage piston 34 reaches the bottom of the cylinder 32, the swabbing piston 20 reaches the bottom of the chamber 12 (or some other such mechanical stop point is reached), or until a pressure equilibrium between the fluid above the second stage piston 34 and the gas below it is reached.
- FIG 2 shows a variant of the embodiment of Figure 1 .
- the same numbers have been used for corresponding parts.
- the vent in the upper section 14 (44 in Figure 1 ) is replaced by a gas reservoir 50 and a valve 52.
- the gas in the reservoir is held at a pressure higher than the ambient pressure of the well at the depth of use.
- both valves 42 and 52 are opened and operation continues as described previously.
- the use of a pressurised gas allows a higher driving pressure to be applied where the operation is at relatively shallow depth such that the pressure differences are low, or where an extra 'boost' is needed to overcome static friction, or some mechanical blockage.
- FIG 3 shows another variant of the embodiment of Figure 1 .
- the outlet 16 is provided with an end fitting 54 having an outlet passage 56 terminating in an exit port 58 that directs flow from a side part of the end fitting 54.
- This particular embodiment of the invention can be useful where the chamber 12 is filled with acids and chemicals suitable for de-scaling and cleaning operations within the wellbore.
- the basic operating principle is the same as described above to generate the force to displace the contents of the bailer tube.
- the exit port 58 can be configured to have a fixed single or multiple exit orifice which may be oriented to a particular azimuth within the well bore using a muleshoe or other mechanical device (typically used within well completions such as are used to deploy or retrieve gas-lift valves from side pocket tools) to direct a pressure stream or jet of cleaning agent from within the apparatus during the displacement stroke of the ram.
- the tool could then be vertically oscillated from the well surface to direct the stream as required over a longitudinal section of the well trajectory.
- another embodiment of the apparatus used for clean up purposes has an end fitting 60 with multiple exit jets 62 arranged equally around its periphery to direct pressurized streams or jets of cleaning agent around an axial section of the wellbore.
- the end fitting 60 also be made to freely rotate around the longitudinal axis of the apparatus using the pressure and flow of displaced fluid from the tube as a driving mechanism whilst the hydraulic ram is displacing the contents. This arrangement could be used to clean a landing nipple profile or seal area of a wellbore or tubing completion.
- Figures 5 and 6 shows a supply of pressurised gas as the principal driving force.
- the dump bailer comprises a tool body 70 that defines a simple chamber 72 running along it whole length.
- the swabbing piston 74 is able to slide along the whole length of the chamber 72.
- the swabbing piston 74 has an extended piston body 76 extending from its rear surface to project through a sliding seal 78 at the top of the chamber 72.
- the piston body 76 includes a reservoir of pressurised gas (e.g. nitrogen) 80 and a passage 82 connecting the reservoir 80 to an outlet disposed in the chamber 72 just above the swabbing piston 74.
- a valve 84 is provided in the passage 82.
- valve 84 is operated to allow pressurised gas to enter the chamber 72 above the swabbing piston 74 which is forced down the chamber 72 expelling any fluids through an outlet 86.
- the swabbing piston 74 advances, the piston body is drawn through the sliding seal 78 until the swabbing piston 74 reaches the bottom of the chamber 72 ( Figure 6 ).
- a trigger section that can be used with the present invention that essentially corresponds to a slickline firing head of the type currently used for slickline explosive applications or to trigger cutters and set packers and plugs.
- the trigger is operated by a coded sequence of tension pulses on the slickline wire. This coded sequence is converted to pressure pulses by a strain sensor in the tool. This unique combination of pulses creates the special signature required to communicate with the firing head, or in this case with the dump bailer actuator.
- a pressure transducer in the tool detects a command from the surface (pull on the slick line).
- Two separate processors in the controller module are required to independently verify the unique command.
- the tool In addition to the safety of the unique command signature of the pressure pulses, the tool must be enabled by a preset hydrostatic pressure, followed by an arming command sent from the surface, before it will accept a firing command.
- the trigger works by interpreting changes in downhole pressure as instructions to perform specific operations during a job.
- Pressure changes detected by a pressure gauge result from two sources: deviations in ambient hydrostatic pressure (i.e. depth in the well) and changes in line tension, which are translated into pressure changes by the strain head. Completion of the firing sequence requires suitable signals from both sources.
- the tool will not fire unless it reaches a preset minimum pressure specified by the operator.
- jerking on the slickline causes tension changes detectable by the pressure transducer through the action of the strain head.
- the signal produced by the jerk has unique characteristics that can be recognized. Detection of this signal is a slickline trigger event.
- the tool detects fire commands by searching for a predefined sequence of trigger events with specific time spacing.
- Each event has an associated type, reference pressure and reference time. These events, each with its own reference time and pressure, are used to locate command sequences.
- the tool typically takes a pressure measurement every 200 ms for use in locating these events. Each sample is used for command analysis and saved in memory.
- the trigger section of the tool (refer to Figure 7 ) comprises a cylindrical tube housing 90, upper 92 and lower 94 connectors which allow the trigger to be mounted concentrically to both the slickline trigger and telescopic ram/actuator section of the tool.
- Contained within the housing is an interface electronics assembly 96 which will obtain and interpret electrical signals from the trigger tool at the appropriate time and operate an electric motor or other electro-mechanical actuator 98.
- the motor or electro-mechanical actuator will in turn operate an output shaft or rod 100 to operate the valves 42, 52, 84 of Figures 1, 2 , 5 and 6 .
- the tool may be triggered via electric line with a direct or indirect electrical connection to the surface, or by a built-in timer which is powered by an internal battery and where the delay is set at the surface.
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid-Pressure Circuits (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Earth Drilling (AREA)
Claims (17)
- Austrag-Bohrlochpumpe, die umfasst:- einen Werkzeugkörper (10), der eine Kammer (12) definiert, die ein abzulagerndes Material enthält;- einen Auslass (16) in dem Werkzeugkörper (10), durch den das Material abgelagert werden kann; und- eine Kolbenanordnung, die in der Kammer gleitend angebracht ist und einen Pistonierkolben (20), eine Versorgung für Druckfluid und ein Ventil (42) zum Freigeben des Druckfluids, um auf den Pistonierkolben (20) einzuwirken, um ihn längs der Kammer (12) anzutreiben, um darin enthaltenes Material durch den Auslass (16) auszustoßen, enthält; und- einen Zwischenmechanismus, durch den das Druckfluid auf den Pistonierkolben (20) einwirken kann, dadurch gekennzeichnet, dass die Kolbenanordnung einen Kolben (26) erster Stufe, der in dem Werkzeugkörper (10) gleitend angebracht ist, und einen Kolben (34) zweiter Stufe, der in dem Kolben (26) erster Stufe gleitend angebracht ist, umfasst, der Kolben (34) zweiter Stufe mit dem Pistonierkolben (20) verbunden ist und das Ventil (42) arbeitet, um Druckfluid zwischen den Kolben (26, 34) erster und zweiter Stufe auszugeben, um den Pistonierkolben (20) längs der Kammer (12) anzutreiben.
- Austrag-Bohrlochpumpe nach Anspruch 1, wobei das Ventil (42) betreibbar ist, um Druckfluid zu lenken, damit es direkt auf den Pistonierkolben (20) einwirkt.
- Austrag-Bohrlochpumpe nach Anspruch 1 oder 2, wobei die Versorgung mit Druckfluid einen Vorratsbehälter (38) umfasst, der an dem Pistonierkolben (20) so getragen wird, dass er damit beweglich ist.
- Austrag-Bohrlochpumpe nach Anspruch 1, wobei an einer Innenwand des Werkzeugkörpers (10) eine Gleitdichtung (22) vorgesehen ist und der Kolben (26) erster Stufe ein vorderes Ende (28) aufweist, das gegen die Innenwand des Werkzeugkörpers abdichtet, und ein hinteres Ende (30) aufweist, das einen kleineren Durchmesser als das vordere Ende (28) besitzt und in der Gleitdichtung (22) abdichtet.
- Austrag-Bohrlochpumpe nach Anspruch 4, wobei die Versorgung mit Druckfluid einen Vorratsbehälter (38) umfasst, der zwischen dem vorderen Ende (28) des Kolbens (26) erster Stufe und der Gleitdichtung (22) am Werkzeugkörper (10) definiert ist.
- Austrag-Bohrlochpumpe nach Anspruch 5, wobei die Gleitbewegung des Kolbens (26) erster Stufe im Werkzeugkörper (10) bewirkt, dass der Vorratsbehälter (38) sein Volumen ändert.
- Austrag-Bohrlochpumpe nach Anspruch 1, die ferner eine Öffnung (24) in dem Werkzeugkörper aufweist, so dass der Innenraum des Werkzeugkörpers unterhalb der Gleitdichtung (22) zum Umgebungsdruck geöffnet ist.
- Austrag-Bohrlochpumpe nach Anspruch 7, wobei der Innenraum des Werkzeugkörpers (10) über dem vorderen Ende (28) des Kolbens (26) erster Stufe zu dem Umgebungsdruck geöffnet ist.
- Austrag-Bohrlochpumpe nach Anspruch 7, wobei das Druckfluid durch die Wirkung des Umgebungsdrucks, der darauf wirkt, mit Druck beaufschlagt wird.
- Austrag-Bohrlochpumpe nach Anspruch 7, wobei der Werkzeugkörper (10) ferner eine zusätzliche Versorgung für Druckfluid umfasst, die mit dem Innenraum des Werkzeugkörpers (10) über dem vorderen Ende (28) des Kolbens (26) erster Stufe mittels eines Ventils verbunden ist.
- Austrag-Bohrlochpumpe nach Anspruch 1, wobei der Kolben (34) zweiter Stufe mit dem Pistonierkolben (20) mechanisch verbunden ist und der Kolben (26) erster Stufe einen Zylinder definiert, in dem der Kolben (34) zweiter Stufe angebracht ist und in den das Ventil (42) Druckfluid ausgeben kann, um den Kolben (34) zweiter Stufe längs des Zylinders anzutreiben, der seinerseits den Pistonierkolben (20) längs der Kammer antreibt.
- Austrag-Bohrlochpumpe nach Anspruch 11, wobei der Abschnitt des Zylinders unterhalb des Kolbens (34) zweiter Stufe auf einem Innendruck gehalten wird, der geringer als der Druck des Fluids in der Versorgung ist, wenn sich das Werkzeug in einer Umgebung mit Umgebungsbetriebsdruck befindet.
- Austrag-Bohrlochpumpe nach einem vorhergehende Anspruch, wobei der Auslass (16) ein Entlastungsventil (18) aufweist, das normalerweise in einer geschlossenen Position gehalten wird, bis der Druck in der Kammer aufgrund der Wirkung des Pistonierkolbens (20) über einen Öffnungsdruck ansteigt.
- Austrag-Bohrlochpumpe nach einem vorhergehenden Anspruch, wobei der Auslass (16) ein Endanschlussstück (54) aufweist, das eine Öffnung in einer vorgegebenen Azimutposition an dem Werkzeugumfang besitzt.
- Austrag-Bohrlochpumpe nach Anspruch 14, wobei das Endanschlussstück (54) zahlreiche Öffnungen in Azimutpositionen am Werkzeugumfang besitzt.
- Austrag-Bohrlochpumpe nach Anspruch 14 oder 15, wobei das Endanschlussstück (54) frei drehbar ist.
- Austrag-Bohrlochpumpe nach Anspruch 16, die ferner einen Antriebsmechanismus umfasst, um das Endanschlussstück zu drehen, wobei der Antriebsmechanismus durch die Strömung von Fluid aus der Kammer angetrieben wird.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08170190A EP2192262B1 (de) | 2008-11-28 | 2008-11-28 | Zementierkorb |
US12/624,569 US20100155054A1 (en) | 2008-11-28 | 2009-11-24 | Dump bailer |
CA2686298A CA2686298A1 (en) | 2008-11-28 | 2009-11-25 | Dump bailer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08170190A EP2192262B1 (de) | 2008-11-28 | 2008-11-28 | Zementierkorb |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2192262A1 EP2192262A1 (de) | 2010-06-02 |
EP2192262B1 true EP2192262B1 (de) | 2012-11-14 |
Family
ID=40547829
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08170190A Not-in-force EP2192262B1 (de) | 2008-11-28 | 2008-11-28 | Zementierkorb |
Country Status (3)
Country | Link |
---|---|
US (1) | US20100155054A1 (de) |
EP (1) | EP2192262B1 (de) |
CA (1) | CA2686298A1 (de) |
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US8668005B2 (en) * | 2011-03-30 | 2014-03-11 | Eligio Antonio Colon | Dump bailer |
RU2477782C2 (ru) * | 2011-04-20 | 2013-03-20 | Общество с ограниченной ответственностью "СЕРВИСНЕФТЕГАЗ" | Желонка цементировочная |
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US2591807A (en) | 1947-08-23 | 1952-04-08 | Haskell M Greene | Oil well cementing |
US2696258A (en) | 1950-05-15 | 1954-12-07 | Haskell M Greene | Oil well cementing packer |
US2689008A (en) | 1951-06-15 | 1954-09-14 | Standard Oil Dev Co | Method for cementing wells |
US2725940A (en) | 1954-08-25 | 1955-12-06 | Mccullough Tool Company | Dump bailer for wells |
US2994378A (en) | 1957-03-13 | 1961-08-01 | Jersey Prod Res Co | Treatment of a well with the drill string in the well |
US3020961A (en) | 1957-12-16 | 1962-02-13 | Jersey Prod Res Co | Liquid chemical injector for use in wells |
US3273961A (en) * | 1958-07-11 | 1966-09-20 | Babcock & Wilcox Co | Regeneration of magnesium bisulphite pulping liquor and absorption of sulphur dioxide during regeneration |
US3187813A (en) | 1961-12-12 | 1965-06-08 | Jr Haskell M Greene | Apparatus for depositing cement or the like in a well |
US3208521A (en) | 1963-08-09 | 1965-09-28 | Exxon Production Research Co | Recompletion of wells |
US3273647A (en) * | 1963-08-19 | 1966-09-20 | Halliburton Co | Combination well testing and treating apparatus |
US3318393A (en) | 1964-04-07 | 1967-05-09 | Halliburton Co | Formation treatment |
US3379251A (en) | 1965-10-22 | 1968-04-23 | Dresser Ind | Dump bailer |
NO20010314L (no) * | 2000-01-20 | 2001-07-23 | Cook Robert Bradley | Fluidinjeksjonsapparat og fremgangsmåte med styrt volumfortrengning til bruk i underjordiske brönner |
US6966376B2 (en) | 2003-03-28 | 2005-11-22 | Schlumberger Technology Corporation | Method and composition for downhole cementing |
-
2008
- 2008-11-28 EP EP08170190A patent/EP2192262B1/de not_active Not-in-force
-
2009
- 2009-11-24 US US12/624,569 patent/US20100155054A1/en not_active Abandoned
- 2009-11-25 CA CA2686298A patent/CA2686298A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
US20100155054A1 (en) | 2010-06-24 |
CA2686298A1 (en) | 2010-05-28 |
EP2192262A1 (de) | 2010-06-02 |
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