EP0216527A2 - Verfahren und Vorrichtung zum Ausführen von Arbeiten in einem Bohrloch - Google Patents

Verfahren und Vorrichtung zum Ausführen von Arbeiten in einem Bohrloch Download PDF

Info

Publication number
EP0216527A2
EP0216527A2 EP86306608A EP86306608A EP0216527A2 EP 0216527 A2 EP0216527 A2 EP 0216527A2 EP 86306608 A EP86306608 A EP 86306608A EP 86306608 A EP86306608 A EP 86306608A EP 0216527 A2 EP0216527 A2 EP 0216527A2
Authority
EP
European Patent Office
Prior art keywords
packer
housing
well
chamber
piston
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.)
Granted
Application number
EP86306608A
Other languages
English (en)
French (fr)
Other versions
EP0216527A3 (en
EP0216527B1 (de
Inventor
Flint R. George
David M. Haugen
Bennie C. Gill
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.)
Halliburton Co
Original Assignee
Halliburton Co
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 Halliburton Co filed Critical Halliburton Co
Priority to AT86306608T priority Critical patent/ATE58778T1/de
Publication of EP0216527A2 publication Critical patent/EP0216527A2/de
Publication of EP0216527A3 publication Critical patent/EP0216527A3/en
Application granted granted Critical
Publication of EP0216527B1 publication Critical patent/EP0216527B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/12—Packers; Plugs
    • E21B33/129—Packers; Plugs with mechanical slips for hooking into the casing
    • E21B33/1295—Packers; Plugs with mechanical slips for hooking into the casing actuated by fluid pressure
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
    • E21B23/06—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for setting packers

Definitions

  • the present invention relates generally to.methods and apparatus for use in well completion operations, and more particularly relates to methods and apparatus for packing off a well, for placing a seal assembly within a packer, and for actuating apparatus used in well completion operations.
  • the present invention provides a new method and apparatus for running a packer into a well on the end of the tubing string, for setting the packer, and for placing either an extra long seal assembly or another mechanism within the packer bore for accommodating tubing movement, on a single trip with the tubing into the borehole.
  • Some conventional packer setting techniques include the use of mechanisms which substantially set either an upper or lower packer slip, but require movement of the tubing string to move the packer body in order to set the opposing slip and fully compress the packing element. Such movement of the tubing string is undesirable because it requires movement of a potentially large number of components and requires such components to be subjected to the forces required to set the packer slips.
  • the present invention also provides a dual-acting packer setting mechanism which acts both upon the packer setting sleeve and upon the packer body to fully set the packer without manipulation of the tubing string.
  • packers and other well tools include integral atmospheric pressure chambers to allow hydrostatic pressure to operate a piston or other movable mechanism. Devices with these integral atmospheric pressure chambers may seize under the hydrostatic pressure in the well or may actuate prematurely. Additionally, because of the time such air chambers may be exposed to the hydrostatic pressure in the well, the air chambers may leak, rendering them inoperative.
  • the present invention provides a new method and apparatus for setting packers and for operating other types of downhole equipment, such as, for example, tubing releases or firing heads, through use of the pre-existing hydrostatic pressure in the well through placement of a separate chamber of reduced pressure to actuate such packer or other well tool.
  • a method and apparatus for setting a packer and for placing seals, or other mechanisms to accomodate movement of the tubing string, within the packer in a single trip into the borehole include at least one hydraulically movable member, such as a hydraulic piston, which is coupled or otherwise operatively associated with a setting mechanism for setting at least one of the sets of slips on the packer.
  • a seal assembly will be placed in the packer bore
  • such apparatus will include a housing and an inner mandrel. The inner mandrel is suspended from the seal assembly which is in turn suspended from the tubing string.
  • the inner mandrel will be initially secured, by a coupling mechanism, in a fixed relation to the housing.
  • the coupling mechanism is preferably configured to be releasable only after the packer has been set.
  • the coupling mechanism is released only after a hydraulic piston utilized to set the packer is moved from an initial position to a second position in the course of setting the packer. Once the coupling mechanism is released, the seal assembly can be lowered into position within the packer bore.
  • Such an apparatus may be constructed either as an integral part of a packer or as a setting tool to be secured to a separate packer.
  • a method and apparatus for hydraulically setting both slips of a packer independent of movement of the tubing preferably includes the use of a pair of hydraulic members, such as hydraulic pistons.
  • Each hydraulic piston will preferably be exposed to a single source of hydraulic pressure.
  • one of the hydraulic pistons will be designed to move in a first longitudinal direction and will be coupled, or otherwise operatively associated with the packer body.
  • the second hydraulic piston will be designed to move in the opposite longitudinal direction in response to the hydraulic pressure and will be attached to a packer actuating sleeve. Accordingly, when hydraulic pressure is applied to the pistons, the pistons serve to move in opposing directions and to set the packer without any movement of the tubing string.
  • a setting apparatus in accordance with the present invention can either be formed as an integral part of a hydraulically set packer or as a setting tool for attachment to a separate packer. Additionally, in one preferred embodiment of the invention, the setting tool will include a mechanism as described above for placing a sealing device in the packer bore on a single trip into the borehole.
  • the invention includes the use of an actuator which includes a chamber which is at atmospheric pressure.
  • the actuator is run into the well, such as on a wireline or slickline, where is engages the well tool to be actuated.
  • a mechanism is provided, such as a hydraulically actuable piston or a mechanically actuable piston, which will place the atmospheric chamber in fluid communication with one side of a hydraulically movable member, the other side of which is exposed to hydrostatic pressure.
  • the relatively low pressure in the atmospheric chamber will allow the hydrostatic pressure to move the member thus actuating the well tool.
  • the present invention also encompasses a plurality of well tools which are operable in response to such an atmospheric chamber actuator, including a tubing release sub, a packer setting mechanism, and a perforating gun firing head.
  • Unit 20 includes a hydraulically set packer 22 and a seal assembly 24 which are suspended from tubing string 25.
  • Unit 20 is depicted in a borehole 26 lined with casing 28 in a conventional manner.
  • a perforating gun 30 is coupled to a tubular extension 32 coupled to the lower end of packer 22, as will be discussed more fully later herein.
  • the apparatus depicted in FIG. 1 may be utilized in a well completion operation to isolate a portion of the well beneath the packer, to place an extra long seal assembly in place within the packer bore, and perforate the well, all in a single trip into the borehole.
  • tubing movement will be accomodated by the placing of an extra long seal assembly into the packer.
  • Alternative apparatus may be utilized in accordance with the present invention to accommodate tubing movement. For example, a slickjoint having a seal assembly placed in sealing engagement therewith may be placed in the packer bore to engage a seal therein in place of the extra long seal assembly described above.
  • Hydraulically set packer 22 includes a conventional packer mechanism, indicated generally at 34, coupled with an integral hydraulic setting tool, indicated. generally at 36. As indicated earlier herein, setting tool 36 is designed to allow the placing of seal assembly 24 into the packer bore after packer 22-is set.
  • Packer 22 includes a conventional packer mechanism 34, which is integral with setting tool 26.
  • Setting tool 26 includes a housing 38 and an inner mandrel 40 situated concentrically thereto. Housing 38 and mandrel 40 cooperatively define an annular chamber 42 bounded at the top by a cap 44 and at the bottom by a concentric sleeve 46. Cap 44 is threadably coupled, at 45, to housing 38. .
  • Concentric sleeve 46 includes a plurality of radially spaced, outwardly extending flanges 50 which threadably couple, at 51, to housing 38. By virtue of the circumferential spacing of flanges 50, a plurality of longitudinal slots are formed through concentric sleeve 46.
  • Piston 52 Housed within annulus 42 is hydraulic piston 52. Piston 52 is slidably and sealingly engaged between housing 38 and inner mandrel 40. Inner mandrel 40 includes a plurality of ports 55 proximate upper surface 57 of piston 52. A plurality of conventional seals, such as O-ring seals, 54, 56 seal between piston 52 and inner mandrel 40 and housing 38.
  • the upper end of piston 52 includes an upwardly extending tubular flange 64. Flange 64 extends along a radially outward portion of annulus 42.
  • the lower end of piston 52 includes a plurality of longitudinal extensions 58 adapted to extend through the above-described slots in concentric sleeve 46 and to threadably couple, at 60, to packer actuating sleeve 62.
  • Cap 44 at the top of housing 38 includes a tubular flange 66 which extends proximate inner mandrel 40 and is sealingly engaged therewith.
  • tubular flange 64 of piston 52 will overlie tubular flange 66 of cap 44.
  • Piston 52 will be coupled by a shear pin 67 to tubular flange 66.
  • the shear strength of shear pin 67 will determine the activation pressure for causing setting tool 26 to set packer mechanism 34.
  • Tubular flange 66 includes a plurality of apertures 68. In the initial position, as illustrated, a plurality of notches 72 in inner mandrel 40 are aligned with apertures 68.
  • a plurality of lugs 70 extend through apertures 68 and engage beveled notches 72 in inner mandrel 40, securing inner mandrel 40 in fixed relation to cap 44, and thereby also to housing 38. Lugs 70 are retained in locking engagement with notches 72 by tubular flange 64 of piston 52 which prevents radial movement of lugs 70 when tubular flange 64 is situated concentric to flange 66 as illustrated in FIG. 2.
  • Concentric sleeve 46 couples housing 38 to packer body sleeve 74 at threaded coupling 76.
  • piston 52 is coupled, at 60, to packer actuating sleeve 62.
  • Packer actuating sleeve 62 is coupled by a shear pin 78 to concentric.s1eeve 46.
  • Concentric sleeve 46 is in turn coupled by a shear pin 80 to inner mandrel 40. Shear pin couplings 78 and 80 prevent inadvertent or premature setting of packer mechanism 34.
  • packer and seal assembly unit 20 depicted in FIG. 2 includes an optional fluid valve, indicated generally at 82.
  • One intended use for optional valve 82 will be to allow perforating of the well, testing of the well production through ports 90 and valve 82, and subsequent shutting in of the well.
  • a ported extension 84 is coupled to the lower end of inner mandrel 40.
  • Ported extension 84 includes an outwardly extending peripheral flange 86, having upper and lower beveled surfaces 85 and 87, respectively.
  • a housing extension 88 is coupled to packer body 74. Housing extension 88 includes a plurality of ports 90.
  • Valve 82 operates to close ports 90 by a slidable member 92.
  • Slidable member 92 includes a sealing portion 93 with a plurality of spaced seals 94a and 94b, adapted to straddle ports 90 and thereby prevent fluid flow therethrough.
  • Slidable member 92 includes a web portion 96 coupled to sealing portion 93.
  • First collet fingers are adapted to be engageable with a first peripheral notch 106 in housing extension 88.
  • Second collet fingers 100 are adapted to be engageable with a second peripheral notch 108 in housing extension 88.
  • An upward movement of ported extension 84 will cause upper surface 85 of flange 86 to engage upper collet fingers 98, and to move slidable member to a first position, as illustrated in FIG. 2, wherein first collet fingers 98 are engaged with slot 106 and seal members 94a and 94b straddle port 90, preventing fluid flow therethrcugh.
  • a downward movement of ported extension 84 will cause lower surface 87 of flange 86 to engage lower collet fingers 100 and to move slidable member 92 to a second position, as illustrated in FIG.
  • packer 26 will be set through the use of hydraulic pressure in the tubing string.
  • a sealing device such as a ball 109 (illustrated in phantom lines) or retrievable plug, may be lowered down the tubing string and seated against seating flange 111, in a conventional manner. Hydraulic pressure may then be established within inner mandrel 40 by pumping fluid down tubing string 25 and seal assembly 24.
  • Fluid pressure within inner mandrel 40 will pass through ports 55 and act upon piston 52.. Once the shear force of shear pins 67 and 78 is reached, piston 52 will move downwardly. This downward movement causes upper packer setting sleeve 62 to similarly move downwardly and urge upper packer slips 110 into engagement with casing 28. As with some conventional setting tools and packers, an upward movement of packer and seal assembly unit 20 may be utilized to fully set packer 22.
  • seal assembly 24 may be moved into position within the packer bore.
  • the downward movement of piston 52 causes tubular flange 64 of piston 52 to move away from lugs 70, establishing a radial recess into which lugs 70 can move.
  • a setting down of weight on the tubing string, and thereby on seal assembly 24, will cause shear pin 80 to shear.
  • the beveled surfaces of notch 72 in mandrel 40 will urge lugs 70 radially outwardly, thereby releasing mandrel 40 from housing 38.
  • FIG. 8 therein is shown packer and seal assembly unit 20 after seal assembly 24 has been fully lowered, through movement of tubing string 25, to place seals 115, 117 into the packer bore.
  • the lower surface 87 of ported extension 84 will contact second collet fingers 100 and move slidable member 92 downwardly until second collet fingers 100 engage notch 108 in housing extension 88.
  • second collet fingers 100 engage notch 108 they will move out of the path of ported extension 84 and allow inner mandrel 40 and seal assembly 24 to continue moving downwardly without further movement of slidable member 92.
  • the well is in condition for permanent production through ports 90 in housing extension 88, ported extension 84, and seal assembly 24. If it is desired to shut in the well, seal assembly 24 and inner member 40 may be removed from the packer bore. This upward movement of the above components will cause valve 82 to close, shuting in the well.
  • FIG. 9 therein is shown an optional configuration for coupling a hydraulically set packer and seal assembly unit 20, as illustrated in FIGS. 1 and 2, and a perforating gun 30.
  • Perforating gun 30 is coupled directly to the lower end of ported extension 84, which is in turn coupled through inner mandrel 40 to seal assembly 24.
  • valve 82 depicted in FIG. 2 would not be utilized.
  • the seal assembly may be lowered into place, and the well perforated, leaving perforating gun 30 coupled to the lower end of ported extension 84.
  • FIGS. 10A-B therein is shown a hydraulic setting tool 120 with a packer 121, operable substantially in the same manner as the hydraulically set packer with integral setting tool described earlier herein.
  • Setting tool 120 is adapted to be secured as a unit to a separate packer.
  • Setting tool 120 is again adapted to facilitate the setting of the packer and to allow placement of a seal assembly 126 in the packer bore in a single trip into the well. Because of the substantial similarities in structure and operation between hydraulically set packer 22, illustrated in FIGS. 1-8, and hydraulic setting tool 120, primarily only the differences in structure or operation will be discussed in detail herein.
  • Setting tool 120 includes a housing 122 and an inner mandrel 124, which couples at the top to seal assembly 126.
  • the lower end of inner mandrel 124 may couple to a perforated extension (not illustrated), as previously discussed in reference to the hydraulically set packer 22 of FIGS. 1-8, or with other mechanisms as may be desired.
  • An endcap 128 closes the upper end of an annulus 130 formed between housing 122 and inner mandrel 124.
  • lower mandrel 132 the lower end of annulus 130 is closed by a lower mandrel 132.
  • Seals are provided between lower mandrel 132 and inner mandrel 124 and housing 122 by seals 133 and 135, respectively.
  • Lower mandrel 132 is coupled at an intermediate position to housing 122 by a plurality of radially spaced threaded couplings, indicated generally at 136, having a plurality of longitudinal slots 134 therebetween.
  • a lower portion of lower mandrel 132 includes a threaded coupling 137 adapted to engage the packer body 139.
  • a piston 138 is housed within annulus 130 and is sealingly engaged with inner mandrel 124 and housing 122.
  • Piston 138 includes an upper tubular flange 140. Extending from the lower end of piston 138 are a plurality of longitudinal extensions, indicated generally at 142, which threadably couple, at 129, to an adjustment sleeve 143. Longitudinal extensions 142 are adapted to be slidable through slots 134 in lower mandrel 132. Adjustment sleeve 143 contacts packer setting sleeve 145 of packer 121. Adjustment sleeve 143 facilitates the adaption of setting tool 120 to different packers or to variances in packer setting sleeves. Adjustment sleeve 143 will be screwed into contact with packer setting sleeve 145 and secured in position with set screw 137.
  • Inner mandrel 124 is coupled to endcap 128 by an alternative coupling mechanism 150 to that illustrated in reference to hydraulically set packer 22.
  • Coupling mechanism 150 includes a pair of lugs 151 engageable with flats 154 in opposing sides of inner mandrel 124. Lugs 151 are secured, such as by screws, to a frangible band 152. In one preferred embodiment, frangible band 152 is a steel band approximately 1/16 of an inch thick. Lugs 151 are also initially secured in position by the presence of tubular flange 140 of piston 138 extending over band 152.
  • setting tool 120 after it has been actuated to set packer 121.
  • Setting tool 120 is again actuated by hydraulic pressure in the tubing string.
  • a sealing ball may be circulated down the tubing string to engage sealing surface 146 in inner mandrel 124.
  • ' sealing surface is formed in a lower portion of inner-mandrel 124.
  • piston 138 moves downwardly, moving tubular flange 140 from proximate coupling assembly 150 Movement of piston 138 causes adjustable sleeve 143 to push against packer actuating sleeve 145 to set at least upper slips 147 of packer 121. Again, some longitudinal manipulation of the tubing string, and therefore of packer 121 may be utilized to fully set packer 121.
  • inner mandrel 124 and attached seal assembly 126 may be decoupled from housing 122 and packer 121. Rotation of seal assembly 126, and thereby of inner mandrel 124, will apply torque to frangible band 152 through lugs 151 and will cause band 152 to break, allowing lugs 151 to move radially outwardly, thereby decoupling inner mandrel 124 and seal assembly 126 from packer 121. Seal assembly 126 may then be lowered into engagement in the packer bore as previously described with respect to hydraulically set packer 22.
  • Air chamber actuator 182 allows packer 180 to be set in response to the existing hydrostatic pressure in the well. As will be discussed more fully later herein, a relatively low increase over the hydrostatic pressure will be established within the tubing string to actuate the actuator. The existing hydrostatic pressure will then be utilized to set the packer.
  • Packer 180 is identical to packer 22 depicted in FIGS. 1-8, which the exceptions that beneath piston 52, additional ports 183 have been added in inner mandrel 40 and seating surface 111 has been moved upwardly in inner mandrel 40 as indicated at 111'.
  • the remaining components in packer 180 are constructed and operate identically as previously described in the discussion of packer 22. Accordingly, such remaining components have been numbered similarly.
  • Air chamber actuator 182 may be suspended from a wireline or a slickline and will typically be lowered into the well only when it is desired to set packer 180.
  • -Actuator 182 includes a housing 184 adapted to withstand the hydrostatic pressure in the well.
  • Housing 184 may be formed of a plurality of members, such as top housing 186, central housing 188 and bullplug housing 190.
  • Housing 184 includes a ported section, indicated generally at 192, communicating the exterior of housing 184 with an internal chamber 193. The diameter of ported section 192 is such that when atmospheric chamber actuator is situated in packer 180, as illustrated, fluid may flow between housing 184 and inner mandrel 40.
  • Housing 184 includes a sealing section, indicated generally at 194, which is of an enlarged diameter relative to the diameter of ported section 192.
  • Sealing section 194 includes a port 196 which is adapted to align with port 183 in inner mandrel 40 when a seating surface 198 on housing 184 engages seating surface 111' on inner mandrel 40.
  • seals 197, 199 adapted to withstand the hydrostatic pressure to which the hydraulic coupling between housing 184 and inner mandrel 40 will be subjected.
  • seals 197 and 199 are each formed of a plurality of Chevron seals appropriately situated to withstand the hydrostatic pressure.
  • First piston 200 includes a first portion 201 coupled by one or more shear pins 202a, 202b to housing 184. Piston 200 then preferably includes an extension portion 204 which couples first portion 201 to a second portion 206. Second portion 206 is of a smaller diameter than first piston portion 201. Second portion 206 includes a plurality of seals 205a, 205b, such as conventional 0-ring seals, which straddle port 196 in housing 184 and seal against a sealing surface 207 in housing 184, thereby preventing fluid flow through port 196. Piston 200 then includes an extension 208 which extends through a guide member 211 held within housing 184.
  • a pair of chambers 219, 221 are formed in actuator 182. Chambers 219 and 221 are both sealed from the hydrostatic pressure in the borehole and therefore are at atmospheric pressure.
  • Actuator 182 includes a damping piston 210, with seals 215, 217 between the interior of housing 184 and extension 208.
  • Guide member 211 includes a check valve 213.
  • the cracking pressure of check valve 213 will preferably be adjustable within a range of pressures, for example, 5 to 50 psi. As will be apparent from the discussion to follow, the actual cracking pressure utilized will be dependent upon the conformity and dimensions of atmospheric chamber actuator, as well as upon downhole conditions.
  • the activation pressure for atmospheric chamber actuator 182 will preferably be established at some level providing a safety margin over the hydrostatic pressure, for example, at five hundred to one thousand pounds above the hydrostatic pressure in the well at the depth of the actuator. This activation pressure is established by the shear limit of shear pins 202a and 202b securing piston 200 in position within housing 184.
  • packer 180 after atmospheric chamber actuator 182 has been activated to set packer 180.
  • the activation pressure is applied within the tubing string, and thereby in chamber 193 to top surface 214 of piston 200.
  • shear pins 202a, 202b will shear and piston 200 will move downwardly, removing seals 205a and 205b from proximate aperture 196.
  • chambers 219 and 221 in housing 184 are at atmospheric pressure, a low pressure is established in annulus 42 on the downward side of piston 52, relative to the hydrostatic pressure operating through port 55 on the upper surface of piston 52, causing piston 52 to move downwardly to set the packer in the manner previously described.
  • Fluid from annulus 42 beneath piston 52 will flow through apertures 183 and 195, and into chambers 219 and 221 in actuator 182. Movement of piston 200 will be stopped by a ledge at the edge of inner sealing surface 205. Fluid may flow around second portion 206 of piston 200 where the fluid will contact damping piston 210. Movement of damping piston 210 will be restricted by fluid in chamber 221.
  • damping piston 210 As pressure is applied to damping piston 210, the fluid in chamber 221 will gradually be released from chamber 221 through check valve 213 into lower chamber 225. This damping action slows the movement of piston 52 and prevents piston 52 from moving too abruptly and possibly damaging or improperly setting packer 180. After packer 180 is set, atmospheric chamber actuator 182 may be removed from the well and seal assembly 126 lowered into position in the manner described earlier herein.
  • setting tool 220 operable by an alternative embodiment of an atmospheric chamber actuator 222.
  • Setting tool 220 is identical to setting tool 120 discussed earlier herein with the exceptions that the inner mandrel, indicated as 124', now includes a seating surface 224 and an inwardly extending sealing surface 226; and in that a new port 223 has been added in a central location in second sealing surface 226.
  • the remaining components of setting tool 220 are constructed and function identically to those in setting tool 120 and are similarly numbered.
  • Air chamber actuator 222 includes a housing 228 which is again adapted to withstand the hydrostatic pressures in the borehole.
  • housing 228 will preferably be composed of a plurality of sections 230, 231, 232 233, 235 and 239.
  • Housing 228 will preferably have an upper portion of a first diameter, indicated generally at 234, and a lower portion of a second, smaller diameter indicated generally at 236.
  • the diameter of upper portion 234 is proximate the inner diameter of seating surface 224 of inner mandrel 124' but will allow the flow of fluid between housing 228 and inner mandrel 124'.
  • the diameter of second portion 236 is proximate the inner diameter of second seal portion 226 of inner mandrel 124'.
  • first portion 234 to second portion 236 forms a ledge 237 adapted to engage an upper surface 238 of second sealing portion 226 of inner mandrel 124'.
  • Housing 228 includes a recess 240 formed along the diameter of portion 236.
  • a plurality of seals, indicated generally at 242, are retained within recess 240.
  • Seals 242 are preferably chevron seals cooperatively arranged to prevent the flow of hydrostatic pressure into aperture 244 in housing 228 when seals 242 are engaged with sealing surface 226 of inner mandrel 124', as illustrated.
  • Housing 228 includes at least one passageway 246 which will extend from a position beneath second sealing portion 226 on inner mandrel 124' to a position above second sealing surface 226 when atmospheric chamber actuator 222 is positioned within setting tool 220. Passageway 246 assures that actuator 222 will not be prevented from seating within setting tool 220 because of fluid pressure trapped beneath actuator 222.
  • Piston 250 Located within housing 228 is a piston 250. Piston 250 is secured in position relative to housing 228 by one or more shear pins 252. The shear value of shear pins 252 will again establish the actuating pressure for actuator 222 and will be established at some margin of safety over the hydrostatic pressure at the depth of actuator 222. Upper surface 254 of piston 250 will be exposed to hydrostatic pressure through ports 235 in housing 228. Piston 250 includes an extension 256 which terminates in sealing portion 258. Sealing portion 258 includes a pair of seals 260a, 260b which straddle port 244 in housing 228 to prevent fluid flow therethrough. Sealing portion 258 is preferably of an enlarged diameter relative to the diameter of extension 256, such that when sealing portion 258 is moved downwardly past port 244, fluid may readily flow through port 244.
  • Housing 228 includes a plurality of chambers 262, 263, 264, and 265.
  • a damping piston 266 divides chamber 263 from chamber 264.
  • a check valve 267 is installed in passage 268 between chamber 264 and chamber 265.
  • damping piston 266 will push fluid in chamber 264 through the restriction of check valve 267 and passageway 268 into chamber 265, thereby slowing the transfer of fluid.
  • the action of damping piston 266 on fluid chamber 264 serves to prevent setting tool 220 from operating too abruptly.
  • packer setting tool 220 after atmospheric chamber actuator 222 has been activated to cause setting tool 220 to set packer 121.
  • shear pins 252 will shear, and piston 250 will be driven downwardly.
  • the downward movement of piston 250 removes sealing portion 258 from proximate port 244, exposing piston 52 within setting tool 220 to the low pressure within chamber 235. This low pressure causes piston 138 to move downwardly and set packer 121 in the manner described earlier herein.
  • Dual-acting setting tool 280 for setting a packer 282.
  • Setting tool 280 is again adapted to facilitate the placement of a seal assembly, indicated generally at 284, in the packer bore on a single trip into the well.
  • Dual-acting setting tool 280 preferably applies setting force to both the packer body 286 and packer setting sleeve 287 to facilitate the setting of packer 282 without any movement of the tubing string as is typically required with conventional setting tools and/or hydraulically set packers.
  • Setting tool 280 includes a housing 288 and an inner mandrel assembly, indicated generally at 290, defining an annular chamber 292. Chamber 292 is closed at an upper end by endcap 294, threadably coupled, at 296, to housing 288.
  • Inner mandrel assembly 290 includes a first member 298 threadably coupled, at 302, to a second member 300. First and second members 298, 300 are cooperatively conformed such that, at threaded coupling 302, a recess 304 is formed in inner mandrel 290 with a ledge 306 defining the upper edge of recess 304.
  • Second member 300 includes a first, external, longitudinally extending recess 308 and at least one port 310 which provides fluid communication between central annulus 312 in inner mandrel 290 and recess 308. Longitudinally spaced from first external recess 308 is a second, external, longitudinally extending recess 314, the function of which will be described in more detail later herein.
  • inner mandrel 290 longitudinally spaced from second external recess 314, inner mandrel 290 includes a projecting flange 316 and a portion of enlarged diameter 318 which function as components of a lower latching mechanism, indicated generally at 320.
  • Flange 316 has a maximum diameter equal to the diameter of enlarged portion 318.
  • Latching mechanism 320 is conformed such that flange 316 includes a tapered surface 317 on its lower side, and a recess 322 is formed between the lower end of flange 316 and enlarged portion 318. The remainder of latching mechanism 320 will be discussed in more detail later herein.
  • Latch assembly 324 includes a C-shaped ring 326 within a recess 328 between inner mandrel 290 and endcap 294.
  • a cap 372 secures C-shaped ring 326 in fixed relation to endcap 294.
  • C-shaped ring 326 is preferably formed of a resilient metal and has a nominal external diameter which is preferably at least as large as the maximum diameter in recess 328.
  • C-shaped ring 326 is secured to inner mandrel 290 by a plurality of shear screws 330.
  • the caps of shear screws 330 may be housed within an external recess 331, or in individual countersinks, in C-shaped ring 326. As shear screws 330 are threaded into inner mandrel 290, shear screws 330 compress the diameter of C-shaped ring 326. A small recess 333, such as one-sixteenth of an inch, is formed in inner mandrel 290 proximate the area in which shear screws 330 threadably couple to inner mandrel 290. As will be discussed later herein, when shear screws 330 shear, the resiliency of compressed C-shaped ring 326 will force one end of shear screws 330 away from inner mandrel 290. Additionally, the other end of sheared shear screws 330 is recessed within recess 312. Accordingly, each shear surface of shear screws 330 is removed from an adjacent surface, thereby preventing subsequent damage to either the packer bore or the exterior of seal assembly 284.
  • first piston 334 and a second piston 336 Located within chamber 292 are a first piston 334 and a second piston 336.
  • a packer actuating sleeve 338 is coupled to first piston 334 by a shearable latch mechanism, indicated generally at 340.
  • Shearable latch mechanism 340 is preferably generally of a type as described earlier herein for shearable latch 324. Shear screws 341 in shearable latch 340 will require a higher shear force than shear screws 330 in shearable latch 340.
  • Shearable latch 340 secures piston 334 to actuating sleeve 338 through use of a backup collar 342 threadably coupled, at 344, to piston 334.
  • Actuating sleeve 338 includes an upper portion, indicated generally at 346, which includes a plurality of collet fingers 348. Collet fingers 348 have inwardly projecting tips 350 adapted to be engageable with notch 304 in inner mandrel 290. A plurality of seals 352 and 354 seal between inner mandrel 290 and actuating sleeve 338, and between actuating sleeve 338 and first piston 334, respectively. Another seal 356 seals between piston 334 and housing 288. Actuating sleeve 338 includes a port 358 which allows fluid communication between first external recess 308 in mandrel 280 and a chamber 360 between first piston 334 and second piston 336.
  • a seal 386 between actuating sleeve 338 and inner mandrel 290 cooperatively serves with seal 352 to isolate any fluid in recess 308 from either chamber 292 or chamber 360.
  • a pair of seals 388 and 390 seal between second piston 336 and actuating sleeve 338 and housing 288.
  • the lower end 362 of actuating sleeve 338 includes a plurality of collet fingers 364.
  • collet fingers 364 include outwardly projecting flanges 366 engageable with slidable member 368 in latch mechanism 320.
  • the lower-most portion of each collet finger 362 includes an upwardly tapered surface 370.
  • Slidable member 368 is secured by a plurality of shear screws 372 to a C-shaped ring 374.
  • C-shaped ring 374 is preferably sized to require some slight compression to fit within recess 376 formed between packer actuating sleeve 378 and inner mandrel 290.
  • Slidable member 368 is retained within recess 376 by cap 380 threadably coupled, at 382, to packer actuating sleeve 378.
  • Latch mechanism 320 secures packer actuating sleeve 378, actuating sleeve 338, and inner mandrel 290 in a releasable, fixed relation to one another.
  • Packer actuating sleeve 378 contains a plurality of threads 384 adapted to mate with packer body 286.
  • Second piston 336 in chamber 292 is threadably coupled, at 392, to housing 288.
  • An adjustment sleeve 394 is threadably coupled, at 396, to second piston 336. Adjustment sleeve 394 will directly contact upper actuating sleeve 287 of packer 282..Threaded coupling 396 facilitates the adaptation of setting tool 282 to different packers or to packers having variances in actuating sleeve lengths.
  • Inner mandrel 290 will typically have a ported extension (not illustrated) attached to its lower end, as illustrated with hydraulically set packer 22 of FIGS. 1-8. As shown in FIG. 2, this ported extension will preferably include a shoulder for receiving a sealing ball to facilitate the establishing of pressure in central passageway 312 of inner mandrel 290.
  • setting tool 280 activates in response to fluid pressure within central passageway 312.
  • Fluid pressure in central passageway 312 will be applied to first and second pistons 334, 336 by way of port 3 1 0 in inner mandrel 290, external recess 308 and port 358 into chamber 360.
  • Setting tool 280 is designed such that first piston 334 will be utilized to initially set the lower slips of packer 282.
  • the activation pressure for movement of first piston 334 will be determined by the shear strength of shear screws 372 in latching mechanism 320.
  • Pressure on first piston 334 will be applied through actuating sleeve 338, including flanges 336, to sliding sleeve 368.
  • shear screws 372 will shear, allowing slidable member 368 to move upwardly to contact endcap 380.
  • the upward movement of piston 334 will then be transferred through endcap 380 to packer mounting sleeve 384, pulling upwardly on the body of packer 282 and causing the initial setting of lower slips 400 of packer 282.
  • Setting tool 280 is designed such that a further increase in pressure will cause the release of latching mechanism 324 securing inner mandrel 290 in fixed relation to housing 288.
  • the pressure applied in chamber 360 will also act upon second piston 336 which is acting, through housing 288 and endcap 294 on latching mechanism 324.
  • latching mechanism 324 will release as described earlier herein, and second piston 336 will cause adjustment sleeve 394 to push against packer actuating sleeve 398 and set upper slips 402 of packer 282. Pressure will. continue to be applied in central passageway 312 until packer 282 is fully set.
  • seal assembly 284 may be lowered into place within the packer bore as desired. After setting of packer 282, pressure will continue to be applied in central passageway 312 until a final threshold pressure is achieved which shears shear screws 341 and releases latch mechanism 340 coupling piston 334 to actuating sleeve 338. Upon this shearing, piston 334 will move up only slightly due to the constriction provided by collet fingers 346. Inner mandrel 290 and attached seal assembly 284 may then be lowered relative to housing 288 and packer 282. As inner mandrel 290 is lowered, it will slide along actuating sleeve 338.
  • Dual-acting hydraulically set packer 380 is identical to the combination of dual-acting setting tool 280 and packer 282, with the exceptions that adjustment sleeve 394 is no longer necessary, and the second piston (336 in FIG. 19B) and packer actuating sleeve (398 in FIG. 19B). are now combined as a single member, as indicated at 382.
  • FIGS. 25A-B illustrate hydraulically set packer 380 after the packer has been set, but prior to the lowering of the seal assembly 284, into the packer bore.
  • dual-acting hydraulically set packer 380 are constructed and function identically to corresponding components discussed in reference to dual-acting setting tool 280 and packer 282 in FIGS. 19-25. Accordingly, the remaining components have been similarly numbered, and the operation of packer 380 may be determined by reference to the discussion cqncerning FIGS. 19-25.
  • atmospheric chamber actuator 420 in operating position with a slidable sleeve mechanism, in this example a perforating gun firing head 422.
  • atmospheric chamber actuator 420 is designed to utilize a relatively minor increase in pressure over hydrostatic pressure to activate the actuator and to allow the preexisting hydrostatic pressure to operate firing head 422.
  • Firing head 422 includes a housing 424.
  • Housing 424 will preferably be formed of at least two parts, an upper member 426 and a lower member 428. Housing 424 will typically couple directly to the tubing string or to a similar member, such as a tubular extension, as illustrated at 39 in FIG. 2.
  • Upper member 426 includes a central sealing portion 430 of reduced diameter. Upper and lower surfaces, 432 and 434, respectively, of central sealing portion 430 are preferably tapered toward a central sealing surface 436.
  • Lower member 428 couples at a first end to upper member 426.
  • a seal 427 such as a conventional 0-ring seal is utilized to seal between upper and lower member 426 and 428.
  • Lower member 428 will typically be coupled at a lower end to perforating gun 438.
  • Housed within lower member 428 is a piston 440.
  • Piston 440 includes central sealing portion 442 of reduced diameter.
  • Upper and lower surfaces 444 and 446, respectively, of central sealing portion 442 are preferably inwardly tapered toward a central sealing surface 445.
  • a first seal 448 seals between piston 440 and housing 428 while a second seal 450 will seal between piston 440 and atmospheric chamber actuator 422 when atmospheric chamber actuator 422 is positioned within firing head 422, as illustrated in FIG. 27.
  • Second seal 450 will preferably be a bonded seal or an appropriately arranged set of chevron seals.
  • An actuating sleeve 452 is threadably coupled, at 454, to piston 440.
  • Actuating sleeve 452 defines a chamber 456.
  • a plurality of ports 458 in actuating sleeve 452 align with similar ports 460 in housing 424 to provide fluid communication between chamber 456 and the borehole annulus surrounding firing head 422.
  • housing 424 includes a detonating charge 462 retained within a charge holder 464.
  • a pair of threaded caps 466 and 468 are utilized on opposite sides of detonating charge 462 to secure charge 462 in position.
  • a firing pin retainer 470 is held in housing 424 above charge holder 426.
  • Firing pin retainer 470 includes a central bore 472 which houses a firing pin 474 mounted on a piston 476. Piston 476 is sealingly engaged, by means of seals 478 and 480, within bore 472.
  • Firing pin piston 476 is secured in fixed relation to firing pin retainer 470 by a_plurality of retaining balls 482 which engage a peripheral recess 484 in piston 476 and a plurality of apertures 486 in an upper portion 488 of firing pin retainer 470.
  • Retaining balls 482 are secured in position by the slidable engagement of actuating sleeve 452 over upper portion 488 of firing pin retainer 470.
  • Actuating sleeve 452 is secured in position over upper portion 488 of firing pin retainer 470 by a plurality of shear pins 490.
  • Shear pins 490 will be selected to shear at a pressure less than the hydrostatic pressure within the well.
  • Air chamber actuator 420 includes a housing 492 which will typically include a plurality of members, as illustrated at 494, 496, 498, and 500.
  • Housing 492 includes an upper chamber 502 in fluid communication, through ports 504, with tubing annulus 506.
  • a piston 508 is slidably and sealingly engaged within housing 492. Piston 508 will initially be retained in a first position relative to housing 492 by shear pins 512.
  • Piston 508 includes a longitudinal extension 514 and a sealing portion 516.
  • Sealing portion 516 includes a plurality of seals 518, 520 which straddle apertures 522 in housing 492. Sealing portion 522 terminates above a fluid chamber 524 in the lower end of housing 492. External hydrostatic pressures are sealed from chambers 513 and 524. Chambers 513 and 524 of atmospheric chamber actuator 520 will therefore be at atmospheric pressure.
  • atmospheric chamber actuator housing 492 includes a ledge 526 adapted to engage upper surface 432 of sealing portion 430 of firing head housing 424.
  • a seal 532 forms a fluid-tight seal between atmospheric chamber actuator housing 492 and sealing surface 436 of firing head housing 424.
  • Seal 532 will again preferably be either a bonded seal or an appropriately arranged set of chevron seals.
  • seal 450 in firing pin piston 440 forms a fluid-tight seal with the lower portion of atmospheric chamber actuator housing 492. Seals 432 and 450 thereby isolate chamber 439 in firing head 492 from hydrostatic pressure.
  • FIGS. 31A-B therein is shown firing head 422 after it has been activated through operation of atmospheric chamber actuator 420.
  • inner chamber actuator 420 a predetermined fluid pressure is established within tubing annulus 506. This fluid pressure passes through ports 504 and acts upon top surface 534 of piston 508.
  • shear pins 512 shear, and piston 508 is driven downwardly. Downward movement of piston 508 removes sealing portion 516 from proximate apertures 522 in housing 492, thereby placing chamber 524, which is at atmospheric pressure, in fluid communication with chamber 439 in firing head 422.
  • This low pressure in chamber 439 allows hydrostatic pressure in chamber 456 to operate against the lower end of piston 440 and actuating sleeve 452.
  • the hydrostatic pressure shears shear pins 490 drives both members upward relative to housing 424 and actuator 420 until the upper end of piston 440 contacts the lower end of upper member 426, removing actuating sleeve from its concentric relation to upper portion 488 of firing pin retainer 470.
  • FIGS. 32A-C therein is shown another alternative embodiment. of an atmospheric chamber actuator 560 in an operating configuration with an alternative sliding sleeve mechanism, in this example a tubing release sub 562.
  • Tubing release sub 562 is operable by means of a sliding sleeve mechanism.
  • a sliding sleeve mechanism operable by means of a sliding sleeve mechanism.
  • devices utilized in the oil and gas industry such as, for example, tubing valves, or firing heads may be operable by sliding sleeve mechanisms.
  • the basic mechanism disclosed herein will be adaptable for use in such other devices.
  • Tubing release sub . 562 includes a housing, indicated generally at 564. Housing 564 is preferably composed of three members, 568, 570 and 572. Top member 568 will be adapted to couple to the tubing string illustrated at 566. The lower end of member 568 is preferably coupled, at 576, to member 570. Member 570 is coupled to member 572 by means of a collet mechanism, indicated generally at 578. Lower member 572 includes a plurality of collet fingers 580, as can be seen in FIG. 33. Collet fingers 580 include outwardly extending lugs 582 which cooperatively engage recesses 584 in member 570. Collet fingers 580 are secured in engagement with notches 584 by the presence of a sliding sleeve 586.
  • Lower surface 588 of lugs 582 and lower surface 585 of recesses 584 are each preferably downwardly tapered.
  • the lower end of member 572 will typically include a pin connection 590 to facilitate attachment to a length of tubing or other device, such as a perforating gun, which is desired to be releasably coupled through tubing release sub 562.
  • Lower member 572 includes an area of reduced diameter 594 and a ledge 592. Ledge 592 will receive shoulder 670 of atmospheric chamber actuator 560.
  • Sliding sleeve 586 includes a seal 598 which seals between sliding sleeve 586 and housing 564. Sliding sleeve 586 also includes a plurality of apertures 600. Additionally, sliding sleeve 568 includes an inner recess 604 between an upper portion 606 and a lower portion 608. The function of recess 604 will be discussed in more detail later herein. Sliding sleeve 586 is retained in an initial position relative to housing 564 by a plurality of shear pins 602.
  • Air chamber actuator 560 is designed to allow the operation of tubing release sub 562 purely in response to existing hydrostatic pressure in the well, and without the application of hydraulic pressure within the tubing string.
  • Actuator 560 includes a housing 618, which for practical considerations may be formed from a plurality of members 620, 622, 623, and 624.
  • Actuator 560 includes a striker bar 626 which includes a striking piston 628 contained within housing 618. Striker bar 626 is coupled to housing 618 by means of a shear pin 630.
  • a plurality of ports 632 provide fluid communication between a chamber 634 in housing 618 and the tubing annulus 636.
  • a hydraulic piston 638 is slidably received within an inner bore 640 in housing 560.
  • Piston 638 includes an upper portion 642.
  • Upper portion 642 is coupled by shear pins 644 to a retainer ring 637 held in housing 560.
  • Extending from first portion 642 of piston 638 is a first extension 646 of a first diameter and a second extension 648 of a second, smaller diameter.
  • Second portion 648 ends in a sealing portion 650 having a diameter equal to first extension 646.
  • First extension 646 passes through an inwardly projecting first sealing portion .654 in housing 560.
  • a seal 656 seals between housing 560 and first extension 646.
  • Sealing portion 650 of piston 638 extends into a second sealing portion 651 in housing 560.
  • Sealing portion 650 includes a pair of seals 658, 660 which straddle ports 662 in housing 560 when piston 638 is in an initial position, as illustrated.
  • the dimensions of second sealing portion 561 are such that, regardless of the position of piston 638, sealing portion 650 will always seal within bore 653 of second sealing portion 561.
  • Housing 618 includes a plurality of ports 664 and 666 which provide fluid communication between lower annulus 668 and chamber 671 in housing 618.
  • Piston 638 includes a central longitudinal aperture 652.
  • Aperture 652 in piston 638 provides fluid communication between chambers 634 and 671 in housing 618.
  • Air chamber actuator 560 includes a first set of seals 674 adapted to sealingly engage first sealing surface 676 in tubing release sub 562. Seals 674 are preferably a plurality of stacked chevron seals.
  • Air chamber actuator 560 includes a second set of external seals 678 adapted to engage sliding sleeve 586. Seals 678 are also preferably stacked chevron seals.
  • atmospheric chamber actuator 560 is operated in response to a shock applied to striker bar 626.
  • This shock may be applied by a wireline jar or other apparatus. This shock will cause shear pins 630 to shear, and striker bar 626 will impact piston 638, shearing shear pins 644. Because of the relatively large diameter of upper portion 642 of piston 638, hydrostatic pressure within chamber 634 will drive piston 638 downwardly, moving seals 658 past port 662 in housing 560.
  • Chamber-682 in tubing release sub 562 is then exposed, through ports 662, to atmospheric pressure within chamber 647. Because of this low pressure in chamber 682, sliding sleeve 586 will be driven upwardly by hydrostatic pressure acting on the lower end of sliding sleeve 586, such as through port 600. Because sealing portion 650 of piston 638 will always seal within bore 653 of second sealing portion 561, hydrostatic pressure in chamber 670 will not be able to enter chamber 647.
  • the volume of chamber 647 is such that all fluid within chamber 682 may pass into chamber 647.
  • collet fingers 580 may move inwardly.
  • the weight suspended from lower member 572 and the beveled surfaces on lugs 582 and recess 584 will cause collet fingers to move out of recess 584 and to release lower member 572 of tubing release sub 562.
  • lower housing member 572' is coupled to member 570' by a plurality of retainer balls 694.
  • Retainer balls 694 are held by retainer sleeve 586' in apertures 696 in lower member 572' and notches 698 in housing member 570'.
  • Lower member 624' of atmospheric chamber actuator 520 includes a recessed portion 700.
  • the invention includes the following:

Landscapes

  • 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)
  • Sink And Installation For Waste Water (AREA)
  • Vehicle Body Suspensions (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)
  • Vending Machines For Individual Products (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Special Spraying Apparatus (AREA)
  • Fertilizing (AREA)
  • Portable Nailing Machines And Staplers (AREA)
EP86306608A 1985-08-27 1986-08-27 Verfahren und Vorrichtung zum Ausführen von Arbeiten in einem Bohrloch Expired - Lifetime EP0216527B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86306608T ATE58778T1 (de) 1985-08-27 1986-08-27 Verfahren und vorrichtung zum ausfuehren von arbeiten in einem bohrloch.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US77050285A 1985-08-27 1985-08-27
US770502 1985-08-27

Publications (3)

Publication Number Publication Date
EP0216527A2 true EP0216527A2 (de) 1987-04-01
EP0216527A3 EP0216527A3 (en) 1988-07-27
EP0216527B1 EP0216527B1 (de) 1990-11-28

Family

ID=25088769

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86306608A Expired - Lifetime EP0216527B1 (de) 1985-08-27 1986-08-27 Verfahren und Vorrichtung zum Ausführen von Arbeiten in einem Bohrloch

Country Status (6)

Country Link
EP (1) EP0216527B1 (de)
AT (1) ATE58778T1 (de)
AU (1) AU586017B2 (de)
CA (1) CA1269615A (de)
DE (1) DE3675867D1 (de)
NO (1) NO863416L (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2230805A (en) * 1989-04-28 1990-10-31 Baker Hughes Inc Method and apparatus for completion of a well
GB2374889A (en) * 2001-04-25 2002-10-30 Baker Hughes Inc Well completion method and apparatus
GB2377236A (en) * 2001-05-15 2003-01-08 Baker Hughes Inc Packer release mechanism
WO2014178725A1 (en) * 2013-05-03 2014-11-06 Ingineering As Setting tool and method of using same
GB2581268A (en) * 2019-02-07 2020-08-12 Weatherford Tech Holdings Llc Wellbore apparatus for setting a downhole tool

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9702680B2 (en) 2013-07-18 2017-07-11 Dynaenergetics Gmbh & Co. Kg Perforation gun components and system
US11053782B2 (en) 2018-04-06 2021-07-06 DynaEnergetics Europe GmbH Perforating gun system and method of use
US10458213B1 (en) 2018-07-17 2019-10-29 Dynaenergetics Gmbh & Co. Kg Positioning device for shaped charges in a perforating gun module
US11808093B2 (en) 2018-07-17 2023-11-07 DynaEnergetics Europe GmbH Oriented perforating system
US11255147B2 (en) 2019-05-14 2022-02-22 DynaEnergetics Europe GmbH Single use setting tool for actuating a tool in a wellbore
US11578549B2 (en) 2019-05-14 2023-02-14 DynaEnergetics Europe GmbH Single use setting tool for actuating a tool in a wellbore
US11834920B2 (en) 2019-07-19 2023-12-05 DynaEnergetics Europe GmbH Ballistically actuated wellbore tool
CZ2022302A3 (cs) 2019-12-10 2022-08-24 DynaEnergetics Europe GmbH Sestava orientovatelné prorážecí trysky
CA3206497A1 (en) 2021-02-04 2022-08-11 Christian EITSCHBERGER Perforating gun assembly with performance optimized shaped charge load
US11499401B2 (en) 2021-02-04 2022-11-15 DynaEnergetics Europe GmbH Perforating gun assembly with performance optimized shaped charge load
US11713625B2 (en) 2021-03-03 2023-08-01 DynaEnergetics Europe GmbH Bulkhead
WO2022184732A1 (en) 2021-03-03 2022-09-09 DynaEnergetics Europe GmbH Bulkhead and tandem seal adapter
US11753889B1 (en) 2022-07-13 2023-09-12 DynaEnergetics Europe GmbH Gas driven wireline release tool

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3283820A (en) * 1964-02-13 1966-11-08 Camco Inc Fluid-actuated well packer
US4285400A (en) * 1980-07-14 1981-08-25 Baker International Corporation Releasing tool for pressure activated packer
GB2108180A (en) * 1981-10-29 1983-05-11 Camco Inc Hydraulic set well packer
US4516634A (en) * 1983-04-14 1985-05-14 Otis Engineering Corporation Hydraulic running and setting tool for well packer
US4526229A (en) * 1983-02-14 1985-07-02 Gulf Oil Corporation Hydraulic packer assembly

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4716963A (en) * 1985-08-27 1988-01-05 Halliburton Company Apparatus for well completion operations

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3283820A (en) * 1964-02-13 1966-11-08 Camco Inc Fluid-actuated well packer
US4285400A (en) * 1980-07-14 1981-08-25 Baker International Corporation Releasing tool for pressure activated packer
GB2108180A (en) * 1981-10-29 1983-05-11 Camco Inc Hydraulic set well packer
US4526229A (en) * 1983-02-14 1985-07-02 Gulf Oil Corporation Hydraulic packer assembly
US4516634A (en) * 1983-04-14 1985-05-14 Otis Engineering Corporation Hydraulic running and setting tool for well packer

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2230805B (en) * 1989-04-28 1992-08-26 Baker Hughes Inc Method and apparatus for completion of a well
GB2230805A (en) * 1989-04-28 1990-10-31 Baker Hughes Inc Method and apparatus for completion of a well
GB2374889B (en) * 2001-04-25 2005-09-07 Baker Hughes Inc Well completion method and apparatus
GB2374889A (en) * 2001-04-25 2002-10-30 Baker Hughes Inc Well completion method and apparatus
GB2377236A (en) * 2001-05-15 2003-01-08 Baker Hughes Inc Packer release mechanism
US6629563B2 (en) 2001-05-15 2003-10-07 Baker Hughes Incorporated Packer releasing system
GB2377236B (en) * 2001-05-15 2003-07-16 Baker Hughes Inc Packer releasing system
AU785362B2 (en) * 2001-05-15 2007-02-01 Baker Hughes Incorporated Packer releasing system
WO2014178725A1 (en) * 2013-05-03 2014-11-06 Ingineering As Setting tool and method of using same
NO340591B1 (no) * 2013-05-03 2017-05-15 Ingineering As Setteverktøy og framgangsmåte ved bruk av samme
GB2581268A (en) * 2019-02-07 2020-08-12 Weatherford Tech Holdings Llc Wellbore apparatus for setting a downhole tool
GB2581268B (en) * 2019-02-07 2021-06-30 Weatherford Tech Holdings Llc Wellbore apparatus for setting a downhole tool
US11248428B2 (en) 2019-02-07 2022-02-15 Weatherford Technology Holdings, Llc Wellbore apparatus for setting a downhole tool
US11643892B2 (en) 2019-02-07 2023-05-09 Weatherford Technology Holdings, Llc Wellbore apparatus for setting a downhole tool

Also Published As

Publication number Publication date
ATE58778T1 (de) 1990-12-15
EP0216527A3 (en) 1988-07-27
NO863416D0 (no) 1986-08-26
AU6156586A (en) 1987-03-05
DE3675867D1 (de) 1991-01-10
CA1269615A (en) 1990-05-29
NO863416L (no) 1987-03-02
EP0216527B1 (de) 1990-11-28
AU586017B2 (en) 1989-06-29

Similar Documents

Publication Publication Date Title
EP0216527A2 (de) Verfahren und Vorrichtung zum Ausführen von Arbeiten in einem Bohrloch
US5301755A (en) Air chamber actuator for a perforating gun
US4554981A (en) Tubing pressurized firing apparatus for a tubing conveyed perforating gun
EP0578681B1 (de) Wiedergewinnbares überbrückungsstopfen und einbauwerkzeug dafür
US5887654A (en) Method for performing downhole functions
US6779600B2 (en) Labyrinth lock seal for hydrostatically set packer
US4509604A (en) Pressure responsive perforating and testing system
US5404956A (en) Hydraulic setting tool and method of use
US4432417A (en) Control pressure actuated downhole hanger apparatus
US4903775A (en) Well surging method and apparatus with mechanical actuating backup
EP0692610A2 (de) Imbohrloch-Hülsenventil und Stimulationswerkzeug
US3874634A (en) Well safety valve system
US6070672A (en) Apparatus and method for downhole tool actuation
GB2138055A (en) Hydraulic running and setting tool for well packer
US4114694A (en) No-shock pressure plug apparatus
US4716963A (en) Apparatus for well completion operations
US4523643A (en) Well perforating and completion apparatus and associated method
US7380596B2 (en) Downhold disconnect safety joint
US4469179A (en) Safety system
US5370186A (en) Apparatus and method of perforating wellbores
EP0190864B1 (de) Druckbetätigtes Werkzeug im Bohrloch
GB2191274A (en) Firing head for perforating gun
US4690227A (en) Gun firing head
EP0425568B1 (de) Vorrichtung und verfahren zur detonation von bohrlochperforatoren
US4413677A (en) Dual string well packer

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT DE FR GB IT NL

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT DE FR GB IT NL

17P Request for examination filed

Effective date: 19890113

17Q First examination report despatched

Effective date: 19890710

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT DE FR GB IT NL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19901128

Ref country code: AT

Effective date: 19901128

REF Corresponds to:

Ref document number: 58778

Country of ref document: AT

Date of ref document: 19901215

Kind code of ref document: T

ET Fr: translation filed
REF Corresponds to:

Ref document number: 3675867

Country of ref document: DE

Date of ref document: 19910110

ITTA It: last paid annual fee
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19930805

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19930817

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19930823

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19930831

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19940827

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19950301

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19940827

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19950428

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19950503

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST