EP0647767A2 - Procédé pour l'exécution de travaux de perforation dans un puits à l'aide d'un train de tubes de production - Google Patents

Procédé pour l'exécution de travaux de perforation dans un puits à l'aide d'un train de tubes de production Download PDF

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Publication number
EP0647767A2
EP0647767A2 EP94306792A EP94306792A EP0647767A2 EP 0647767 A2 EP0647767 A2 EP 0647767A2 EP 94306792 A EP94306792 A EP 94306792A EP 94306792 A EP94306792 A EP 94306792A EP 0647767 A2 EP0647767 A2 EP 0647767A2
Authority
EP
European Patent Office
Prior art keywords
tubing
perforator
earth formation
conveyed
tubing string
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.)
Withdrawn
Application number
EP94306792A
Other languages
German (de)
English (en)
Other versions
EP0647767A3 (fr
Inventor
David P. Decker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Services Petroliers Schlumberger SA
Anadrill International SA
Original Assignee
Services Petroliers Schlumberger SA
Anadrill International SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Services Petroliers Schlumberger SA, Anadrill International SA filed Critical Services Petroliers Schlumberger SA
Publication of EP0647767A2 publication Critical patent/EP0647767A2/fr
Publication of EP0647767A3 publication Critical patent/EP0647767A3/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • E21B43/119—Details, e.g. for locating perforating place or direction

Definitions

  • the present invention relates to perforation of well bores and, more specifically, to the positioning of perforating guns in the well bore adjacent to the formations to be perforated.
  • tubing-conveyed perforators are frequently employed to conduct perforating operations in those deviated well bores where typical cable-suspended or so-called “wireline” perforating guns cannot be effectively utilized.
  • a technique that is widely used for completing deviated well bores as well as those well bores which traverse multiple formations is to dependently couple a tubing-conveyed perforating-and-testing tool to a tubing joint and progressively lower the tool assembly into a cased well bore by successively assembling a tubing string of sufficient length for dependently positioning the tool assembly at a selected depth location in the well bore.
  • a packer included with the assembly is expanded into sealing engagement with the casing for isolating that portion of the well bore lying below the expanded packer.
  • shaped explosive charges mounted in one or more enclosed-carrier perforators on the lower end of the tool assembly are actuated for perforating the steel casing and cement annulus between the casing and the adjacent borehole wall.
  • a test valve in the well tool is then selectively operated from the surface for controlling fluid communication between the perforated formation interval and the tubing string for conducting various flow and pressure tests of the connate fluids in the isolated earth formations.
  • tubing-conveyed tools are accurately positioned in the well bore before the perforators are actuated. It will be particularly appreciated that the accurate positioning of those perforators is even more critical where the formation intervals to be perforated are relatively thin.
  • a perforating operation is carried out by referring to logs previously made in that well bore which show parameters of the earth formations traversed by the borehole as well as the precise upper and lower depth boundaries of those formations.
  • these perforators are assembled in advance with their respective shaped charges being arranged within each of the carriers for disposing the charges in predetermined depth and orientational relationships with respect to each of the formation intervals that are to be perforated once the tool assembly is positioned at a selected depth location in that well bore.
  • the tubing string is arranged in accordance with those prior logs to be of sufficient length for accurately positioning the assembled perforating-and-testing tool at that selected depth location.
  • these prior logs are often typically correlated with additional measurements such as may be obtained by moving a typical wireline logging tool through the assembled tubing string to verify that the perforators carried by the tubing-conveyed tool assembly have been correctly positioned in relation to the earth formations which are to be perforated.
  • the tubing string may also be assembled with one or more so-called "pup joints" or shortened joints of tubing installed at selected locations in the tubing string to serve as distinctive markers that will be readily detected if the wireline logging tool is also equipped with a collar locator for providing additional signals which will verify the position of the logging tool as it is moved through the tubing string supporting the tubing-conveyed tool assembly.
  • radioactive tags or markers may take the form of radioactive markers or so-called "pip tags" which are normally taped at known locations on selected casing joints of casing before the casing string is assembled.
  • the radioactive pip tags will be positioned at predetermined depth locations in the well bore and will thereby provide distinctive reference points in the well bore that can be readily detected by typical radiation detectors.
  • the correlation measurements provided by any of these wireline logging tools will, of course, necessitate the services of a specialized logging truck and a crew of technicians before another crew of specialists can conduct the perforating operation. It will be realized that if the initial correlation measurements indicate that the perforating guns on the tubing-conveyed tool have been correctly positioned, the wireline logging tool can be returned to the surface without undue delay and the perforating operation commenced without further ado.
  • the assembled tubing string can be readily raised or lowered at the surface as deemed necessary to shift the perforators to their correct locations in the well bore without having to first return the logging tool to the surface. So long as the wireline logging tool is still disposed in the tubing string, there is, of course, no problem in obtaining corroborating verification measurements to confirm the positioning of the perforators before the wireline logging tool is finally returned to the surface.
  • the initial correlation measurements provided by the wireline logging tool will instead indicate that the perforators cannot be properly positioned in the well bore without first changing the overall length of the supporting tubing string.
  • This latter situation will frequently occur in deviated well bores having substantially horizontal intervals since significant changes in the overall length of the tubing string are often required to make even minor adjustments in the positions of the perforators in relation to the formation intervals to be perforated. Should it be determined that such adjustments must be made, the wireline logging tool must, of course, be temporarily removed from the well bore before tubing joints can be added to or removed from the tubing string to adjust the overall length of the tubing string.
  • a shoulder is arranged to support a retrievable measurement-while-drilling (MWD) tool having a radiation detector at a selected location in a tubing string carrying a tubing-conveyed tool such as a perforator with shaped explosive charges.
  • MWD measurement-while-drilling
  • the acoustic signals are correlated to determine the location of the tubing-conveyed tool within the well bore.
  • the correlated data is then used for determining how to adjust the tubing string to accurately position the tubing-conveyed tool at a proposed depth location in the well bore.
  • FIGURE 1 a typical tubing-conveyed perforating-and-testing tool (such as the tool assembly fully described in U.S. Patent No. 4,509,604 which is hereby incorporated herein by reference) is depicted as that tool assembly will appear while suspended in a cased well bore 11.
  • the tool assembly 10 was previously coupled to the lower end of a joint or stand of well tubing and the tool assembly was then progressively lowered into the cased well bore 11 as an elongated tubing string 12 was successively assembled from tandemly-coupled joints with a combined overall length sufficient for positioning the tool adjacent to a selected earth formation, as at 13, containing producible connate fluids.
  • the tubing-conveyed perforating-and-testing tool 10 preferably includes a full-bore reversing valve 14 tandemly coupled between the lower end of the tubing string 12 and the upper end of a full-bore test valve 15.
  • the test valve 15 is, in turn, coupled to the upper end of a tubular mandrel of a full-bore packer 16 which is arranged for dependently supporting a tubing-conveyed perforator such as shown generally at 17.
  • the perforator 17 is preferably dependently coupled to the lower end of the packer 16 by a so-called "safety joint" 18 placed so that the perforator 17 is below the rig floor when the perforating guns are armed.
  • a slotted section of pipe 19 is also typically coupled between the perforator 17 and the safety joint 18 to facilitate the entry of connate fluids into the tubing string 12 once the perforator has been actuated.
  • the packer 16 may be a typical full-bore packer including normally-retracted slips and expandable elastomeric packing elements which are each operable to be shifted outwardly against the internal wall of the casing 111 at a selected depth location just above the formation 13.
  • the reversing valve 14 represented in FIGURE 1 is preferably a selectively-operable full-bore, pressure-controlled reversing valve.
  • the reversing valve 14 is fully operable for selectively controlling communication between the internal bore of the tubing string, as at 12, and the annulus of the well bore, as at 11, by means of controlled pressure changes in the fluids in the annulus and the tubing string.
  • Those skilled in the art will recognize, of course, that various types of typical full-bore reversing valves can also be readily employed as well without departing beyond the scope of the present invention disclosed and claimed herein.
  • test valve 15 fully disclosed in U.S. Reissue Patent No. 29,638 which is also incorporated herein by reference.
  • the test valve has a rotatable ball valve member (not illustrated in the present drawings) which is selectively rotated between its opened and closed positions in response to controlled pressure changes of the fluids in the annulus of the well bore 11 and the fluids in the tubing string 12 for controlling communication through the tubing-conveyed perforating-and-testing assembly 10 and its supporting tubing string 12.
  • test valve 15 in lieu of using the full-bore test valve 15 described in the aforementioned reissue patent, other types of test valves can be employed for practicing the methods of the present invention.
  • the new and improved methods of the invention may also be successfully practiced by employing a simpler test tool (not illustrated in the present drawings) such as those having a glass disc or other frangible barrier initially blocking the axial bore of these simpler tools until the barrier is broken by dropping a so-called "drop bar" through the tubing string 12 whenever communication is to be permanently established through the tubing string.
  • the particular perforator 17 which is to be utilized in successfully practicing the methods of the invention can be any one of the typical tubing-conveyed perforators currently in use in the industry.
  • the perforator 17 can be arranged in accordance with the new and improved perforator disclosed in U.S. Patent No. 4,509,604.
  • the perforator 17 typically has a so-called "firing head" 20 coupled to the upper end of an assembly of one or more enclosed tubular carriers, as indicated generally at 21 and 22, which are respectively arranged for supporting therein a plurality of shaped explosive charges as shown at 23 and 24 in FIGURE 2.
  • the firing head 20 is operatively arranged as seen in FIGURE 2 for detonating a typical blasting cap 25 coupled to a length of flexible detonating cord, such as at 26, which is disposed through the enclosed carriers 21 and 22 and cooperatively arranged within detonating proximity of each of the several shaped charges as at 23 and 24.
  • the firing head 20 is arranged so that it can be selectively operated from the surface by controlled pressure variations in the fluids in the well bore 11 and the tubing string 12.
  • the firing head 20 is also arranged to be fired by dropping a weighted so-called “drop bar” (not illustrated) into the tubing string when it is reasonably assured that this drop bar will be able to strike the firing head with sufficient impact to detonate the blasting cap 25.
  • a tool-positioning device such as a tubular sub or landing nipple 30, be located in the tubing string 12 at a known spatial relationship in relation to the perforator 17 that is included in the tool assembly.
  • the tubular landing nipple 30 includes means, as generally indicated at 31 in FIGURE 2, such as a reduced-diameter intermediate portion in the axial bore of the tubular sub for defining an upwardly-facing internal shoulder or inwardly-projecting abutment cooperatively configured for receiving a matching shoulder on a MWD tool such as the MWD tool shown at 32.
  • the MWD tool 32 is the new and improved reduced-diameter MWD tool that is fully described in U.S. Patent No. 4,914,637 which is hereby incorporated herein by reference.
  • that particular MWD tool, as at 32 is not nearly as complicated as conventional MWD tools which are typically coupled into a string of drill pipe and drilling collars and arranged for providing selected measurements during the course of drilling a borehole with a rotary bit.
  • the reduced-diameter MWD tool 32 depicted in FIGURE 1 uniquely lends itself to being readily arranged for safe passage through a tubing string such as at 12. It will, of course, be recognized that the MWD tool 32 can be readily arranged by those with only routine skill in the art to carry a sensor package, as indicated generally at 33 in FIGURE 2, which includes a variety of typical sensor devices such as gamma-energy radioactivity detectors as well as their associated electronic circuitry, with this combined sensor package being located in an enclosed pressure-balanced housing 34 which, as depicted in FIGURE 1, is preferably arranged on the lower end of the MWD tool.
  • a sensor package as indicated generally at 33 in FIGURE 2
  • This combined sensor package being located in an enclosed pressure-balanced housing 34 which, as depicted in FIGURE 1, is preferably arranged on the lower end of the MWD tool.
  • the landing nipple 30 and the complementary shoulders indicated generally at 31 can be arranged for orienting the MWD tool 32 in a known angular relationship with respect to the perforator 17 should it be desired that the sensor package 33 further include sensors capable of monitoring the angular orientation of the MWD tool 32 in relation to the orientation of the firing axes of the shaped charges 23 and 24.
  • the successful practice of the method of the present invention does not require that the MWD tool 32 must always be oriented in a known angular relationship unless a particular perforating-and-testing operation which is to be performed necessitates that the shaped charges 23 and 24 are aligned in a particular orientation.
  • FIGURES 2-5 schematic representations of the perforating-and-testing tool 10 are respectively depicted in those drawings as the assembled tool is successively employed to practice the preferred steps of methods of the present invention to perforate a selected earth formation as at 13.
  • individual joints or stands of well tubing have been successively coupled to the upper end of the tubing string 12 and progressively lowered from the surface into the cased well bore 11 until the combined length of the tubing string was sufficient for positioning the perforator 17 depending from the lower end of the tool assembly 10 adjacent to the earth formation 13.
  • the landing nipple 30 is preferably coupled to the lower end of the tubing string 12 so that the MWD tool 32 will be offset only a minimal distance above the perforating-and-testing tool assembly 10. With such minimal spacing, it will be appreciated that the sensor package 33 will be better able to provide real-time measurements representative of the characteristics of the particular earth formation, as at 13, that the perforator 17 is then facing.
  • the particular spatial relationship of the sensor package 33 and the perforating-and-testing tool 10 is not of a critical importance to the successful practice of the new and improved methods of the present invention since the tubing string 12 can be moved upwardly and downwardly from the surface whenever it is necessary to determine various formation characteristics as well as to accurately locate the upper and lower boundaries of any given earth formation. Accordingly, those skilled in the art will appreciate that the successful practice of the present invention requires only knowing the precise spatial relationship between the sensor package 33 and the perforators 17 whenever the MWD tool 32 is seated in the landing nipple 30.
  • FIGURE 2 the perforating-and-testing tool assembly 10 is depicted as the tool assembly is being lowered into the well bore 11.
  • the reverse circulating valve 14 is in its open position to allow the tubing string 12 to be progressively filled with the fluids (typically a salt water brine solution) in the well bore 11 as the tool assembly 10 is being lowered to its selected depth location.
  • the test valve 15 is in its closed position.
  • the MWD tool 32 is seen in FIGURE 2 it should be recognized that, as a matter of choice, it may be desired to position the MWD tool on the landing nipple 30 after the entire tubing string 12 has been assembled.
  • the MWD tool 32 will be spared from any rough handling that it might otherwise encounter as the tubing string 12 is assembled.
  • the MWD tool 32 can, of course, be subsequently transported to its selected depth location by releasably coupling a typical wireline overshot (not illustrated in FIGURE 2) to a matching upstanding fishing neck 35 on the upper end of the MWD tool and lowering the MWD tool through the tubing string 12 until it has reached its operating position defined by the engagement of the opposing shoulders 31 on the landing nipple 30 and body of the MWD tool.
  • the MWD tool 32 is alternatively initially positioned on the landing nipple 30 with the mating shoulders 31 cooperatively engaged and the tool transported into the well bore 11 as the tubing string 12 is being progressively assembled.
  • the perforating-and-testing tool assembly 10 has been positioned at a selected depth location in the well bore 11 as is determined by the combined length of the tubing string 12 which has been assembled at that time.
  • the test valve 15 is still closed and, as depicted, the packer 16 has not been set. It should be noted that if desired to protect various earth formations from damage, the full-bore packer 16 could be set if deemed best for isolating that portion of the well bore below the present depth location of the tool assembly 10.
  • a fluid such as a typical brine solution
  • suitable surface equipment not illustrated to carry the fluid downwardly through the tubing string and out of the still-open ports of the circulating valve 14 into the annulus of the well bore 11 from where the fluid is then returned to the surface.
  • the downward flow of the fluid through the tubing string 12 will be effective for initiating the operation of the MWD tool 32 for producing one or more detectable acoustic signals which will be transmitted through the downwardly-moving fluid to typical signal-detecting equipment (not illustrated) that is coupled to the upper end of the tubing string for decoding the acoustic signals which are representative of the real-time measurements produced by the sensor package 33.
  • the successful practice of the present invention is not limited to positioning the tool assembly 10 either at its final depth location or at one or more intermediate depth locations before the MWD tool 32 is operated.
  • the MWD tool 32 may be operated any number of times at one or more intermediate depth locations while the tubing string 12 which has been assembled to that point is moving or stationary so that the sensor package 33 can provide one or more sets of measurements that may be utilized for verifying the current depth location of the tool assembly 10 and the nature of the earth formations which are then immediately adjacent to the sensor package.
  • the downward flow of fluids, as indicated at 45, through the assembled tubing string is employed for operating the MWD tool 32 to determine the nature of the formation interval that is penetrated at that particular depth location in the cased well bore 11.
  • the output signals provided by the MWD tool 32 can be effectively utilized for providing surface indications that are representative of the radioactivity characteristics of the formation 13.
  • this typical radiation detector in the sensor package 33 can also be used to sense the proximity of the detector to one or more radioactive tags, as at 50, which have been previously placed at one or more selected depth locations in the well bore 11.
  • this typical radiation detector in the sensor package 33 can also be used to sense the proximity of the detector to one or more radioactive tags, as at 50, which have been previously placed at one or more selected depth locations in the well bore 11.
  • the overall length of the tubing string 12 can be readily increased or decreased without ever having to remove the MWD tool 32.
  • FIGURE 5 the perforating-and-testing tool 10 is depicted after it has been positioned so as to accurately locate the perforator 17 in its intended position before being actuated.
  • the downward circulation of brine as previously shown at 45 in FIGURE 4, has been discontinued.
  • a typical overshot or grapple 55 which is dependently supported on a suspension line or so-called “slick line” 56 spooled on a winch (not illustrated) at the surface is then lowered into the tubing string 12 and maneuvered as needed for securing the grapple to the upstanding fishing neck 35 on top of the MWD tool 32.
  • the winch carrying the suspension line 56 is then operated for returning the MWD tool 32 to the surface. If it has not been previously set, the full-bore packer 16 is then operated for expanding the elastomeric elements on the packer into sealing engagement with the adjacent wall of the casing 111.
  • the MWD tool 32 Once the MWD tool 32 has been returned to the surface, it is typically preferred to replace the fluid, such as brine, that has been pumped through the tubing string 12 to operate the MWD tool.
  • replacement of the brine in the tubing string 12 is conveniently accomplished by pumping a suitable pressure-control fluid such as diesel oil into the tubing string while the circulating valve 14 is still open.
  • This circulation will, of course, serve to displace at least some of the brine through the still-open ports of the circulating valve 14 and out into the annulus of the well bore 11.
  • the circulating valve 14 is then operated for closing its outer ports; and the tool assembly 10 will then be in readiness for commencing the perforating operation.
  • test valve 15 is operated as previously described as required for opening fluid communication through the tubing string 12 to the isolated well bore interval lying below the expanded full-bore packer 16. Opening of the test valve 15 will also be effective for making the upper end of the firing head 20 accessible from the surface by way of the axial bore through the tubing string 12.
  • the perforator 17 is then fired either by controlling the pressure differential between the axial bore of the tubing string 12 and the annulus of the well bore 11 or by dropping a weighted drop bar (not seen in the drawings) through the tubing string for striking the impact-responsive actuator on the firing head 20.
  • the testing valve 15 is then operated in the typical fashion for conducting one or more pressure-testing operations of the connate fluids that are produced upon opening of the test valve.
  • the testing valve 15 can, of course, be left open as necessary for bringing any connate fluids which may have entered the tubing string 12 to the surface.
  • one or more various pressure and flow tests may be performed while the tool assembly 10 remains in the operating position depicted in FIGURE 5. The nature and number of such tests are, of course, well beyond the scope of the new and improved methods of the present invention.
  • the tool assembly 10 is operated for releasing the packer 16 and then progressively raising the tubing string 12 and successively removing one or more joints or stands of the tubing until the tool assembly 10 has been returned to the surface.
  • the new and improved methods of the present invention provide techniques for accurately locating tubing-conveyed well bore apparatus such as the combined perforating-and-testing tool 10 in a well bore as at 11.
  • the methods of the invention are successfully carried out by first positioning a reduced-diameter MWD tool 32 at a selected location in the tubing string 12 which is arranged to be assembled for positioning the perforating-and-testing tool 10 at a selected depth location in a well bore.
  • the MWD tool 32 is then operated for obtaining signals representative of the measurements provided by radiation-detecting sensing means on the MWD tool 32 which are representative of the radioactivity characteristics of either one or more radioactive markers that were previously placed at known depth locations in the well bore or the earth formations adjacent to the MWD tool. Those representative measurements are then used to accurately determine the depth location of the perforating-and-testing tool 10 so that the perforator 17 carried thereby can be positioned correctly to assure the perforation of a chosen earth formation as at 13.

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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)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Earth Drilling (AREA)
EP94306792A 1993-10-12 1994-09-16 Procédé pour l'exécution de travaux de perforation dans un puits à l'aide d'un train de tubes de production. Withdrawn EP0647767A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13473093A 1993-10-12 1993-10-12
US134730 1993-10-12

Publications (2)

Publication Number Publication Date
EP0647767A2 true EP0647767A2 (fr) 1995-04-12
EP0647767A3 EP0647767A3 (fr) 1995-11-02

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EP94306792A Withdrawn EP0647767A3 (fr) 1993-10-12 1994-09-16 Procédé pour l'exécution de travaux de perforation dans un puits à l'aide d'un train de tubes de production.

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Country Link
EP (1) EP0647767A3 (fr)
CA (1) CA2131595A1 (fr)
NO (1) NO943310D0 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1076156A3 (fr) * 1999-08-13 2002-02-27 Halliburton Energy Services, Inc. Dispositif d'évaluation précoce d'un puits cuvelé
WO2009039389A1 (fr) * 2007-09-20 2009-03-26 Baker Hughes Incorporated Vérification préalable d'un alignement de perforations
EP1212515B1 (fr) * 1999-09-07 2010-09-22 Halliburton Energy Services, Inc. Procedes et appareil associe de recuperation de donnees, de surveillance et de commande d'outils au fond d'un puits
WO2014131132A1 (fr) 2013-03-01 2014-09-04 Xact Downhole Telemetry Inc. Outil de télémétrie destiné à être utilisé au sein d'une colonne de tubage ou crépine
US20230003106A1 (en) * 2021-06-30 2023-01-05 Halliburton Energy Services, Inc. Service Tool String with Perforating Gun Assembly Positioning Tool

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4690218A (en) * 1986-04-03 1987-09-01 Halliburton Company Method for depth control and detonation of tubing conveyed gun assembly
EP0404669A1 (fr) * 1989-06-20 1990-12-27 Institut Français du Pétrole Méthode et dispositif pour conduire des opérations de perforation dans un puits

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4690218A (en) * 1986-04-03 1987-09-01 Halliburton Company Method for depth control and detonation of tubing conveyed gun assembly
EP0404669A1 (fr) * 1989-06-20 1990-12-27 Institut Français du Pétrole Méthode et dispositif pour conduire des opérations de perforation dans un puits

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1076156A3 (fr) * 1999-08-13 2002-02-27 Halliburton Energy Services, Inc. Dispositif d'évaluation précoce d'un puits cuvelé
EP1212515B1 (fr) * 1999-09-07 2010-09-22 Halliburton Energy Services, Inc. Procedes et appareil associe de recuperation de donnees, de surveillance et de commande d'outils au fond d'un puits
WO2009039389A1 (fr) * 2007-09-20 2009-03-26 Baker Hughes Incorporated Vérification préalable d'un alignement de perforations
GB2467246A (en) * 2007-09-20 2010-07-28 Baker Hughes Inc Pre-verification of perforation alignment
GB2467246B (en) * 2007-09-20 2012-07-11 Baker Hughes Inc Pre-verification of perforation alignment
WO2014131132A1 (fr) 2013-03-01 2014-09-04 Xact Downhole Telemetry Inc. Outil de télémétrie destiné à être utilisé au sein d'une colonne de tubage ou crépine
EP2961925A4 (fr) * 2013-03-01 2016-09-28 Xact Downhole Telemetry Inc Outil de télémétrie destiné à être utilisé au sein d'une colonne de tubage ou crépine
US20230003106A1 (en) * 2021-06-30 2023-01-05 Halliburton Energy Services, Inc. Service Tool String with Perforating Gun Assembly Positioning Tool

Also Published As

Publication number Publication date
EP0647767A3 (fr) 1995-11-02
NO943310D0 (no) 1994-09-07
CA2131595A1 (fr) 1995-04-13

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