EP0397875A1 - Pipe roller-expanding device - Google Patents

Pipe roller-expanding device Download PDF

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Publication number
EP0397875A1
EP0397875A1 EP89902699A EP89902699A EP0397875A1 EP 0397875 A1 EP0397875 A1 EP 0397875A1 EP 89902699 A EP89902699 A EP 89902699A EP 89902699 A EP89902699 A EP 89902699A EP 0397875 A1 EP0397875 A1 EP 0397875A1
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EP
European Patent Office
Prior art keywords
rolling
borehole
pin
housing
pipes
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
EP89902699A
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German (de)
French (fr)
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EP0397875B1 (en
EP0397875A4 (en
Inventor
Konstantin Viktorovich Meling
Jury Anatolievich Safonov
Gabdrashit Sultanovich Abdrakhmanov
Jury Grigorievich Mikhailin
Rodion Mikhailovich Bogomolov
Valentin Vasilievich Salomatin
Almaz Adgamovich Mukhametshin
Salikhzyan Mukhametzyanovich Mingazov
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.)
TATARSKY GOSUDARSTVENNY NAUCHNO-ISSLEDOVATELSKY I PROEKTNY INSTITUT NEFTYANOI PROMYSHLENNOSTI
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TATARSKY GOSUDARSTVENNY NAUCHNO-ISSLEDOVATELSKY I PROEKTNY INSTITUT NEFTYANOI PROMYSHLENNOSTI
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Publication of EP0397875A1 publication Critical patent/EP0397875A1/en
Publication of EP0397875A4 publication Critical patent/EP0397875A4/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/02—Subsoil filtering
    • E21B43/10—Setting of casings, screens, liners or the like in wells
    • E21B43/103—Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, or the like
    • E21B43/105—Expanding tools specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D41/00—Application of procedures in order to alter the diameter of tube ends
    • B21D41/02—Enlarging
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B29/00—Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
    • E21B29/10—Reconditioning of well casings, e.g. straightening
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/02—Subsoil filtering
    • E21B43/10—Setting of casings, screens, liners or the like in wells
    • E21B43/103—Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, or the like
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49938—Radially expanding part in cavity, aperture, or hollow body
    • Y10T29/4994—Radially expanding internal tube
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53652—Tube and coextensive core

Definitions

  • the invention relates to drilling technology and relates in particular to a device for rolling pipes.
  • This invention is best suited for the rolling in of profile tubes which are used for covering complication zones in the drilling process, which are characterized by an intensive loss of flushing and cement slurry, by a liquid or gas inflow from the drilled layer into the bore and the caused by an accident.
  • layers are often found that are incompatible with one another, i.e. layers with abnormally high or low layer pressure, as well as layers with a fall.
  • the borehole section is currently being expanded in the zone of the open-ended layer, which has become more complicated according to the drilling conditions, and in the expanded borehole section, for example, a profiled tube tour is set which runs through the wall of the enlarged borehole section the generation therein of a pressure with subsequent calibration of its inner passage channel is pressed to the predetermined borehole diameter using a pipe rolling apparatus.
  • a device for rolling in casing pipes (SU, A, 371340) is already known, which has a housing which is rigidly connected to a cone guide with grooves in which rolling-in elements in the form of cylindrical rollers are arranged movably.
  • the grooves run at an angle to the housing axis, with their lower part being offset relative to the upper part in the direction of rotation of the device.
  • the device On the drill pipes, the device is inserted into the bore up to the crushed section of the casing and begins to rotate by maintaining a certain load, the rollers roll over the crushed casing section and smooth it.
  • a disadvantage of this device is its low operational reliability because the rollers arranged in the grooves of the tapered guide of the housing are wedged into these grooves and quickly worn out due to the penetration of the suspended particles, including grinding particles, from the liquid contained in the borehole.
  • Another disadvantage of the device is the low rolling-in speed of pipes due to the high frictional forces of the rollers in the grooves of the taper guide of the housing.
  • the main disadvantage of the known device is the low strength of the bearings, their rollers, whereby these must not be exposed to the high loads required for rolling in the profiled tubes and consequently the effect of rolling in the said tubes is reduced.
  • a further disadvantage is the poor functionality, caused by floating and grinding particles from the liquid in the borehole penetrating into the grooves with the rollers therein, which also entails wedging and rapid wear of the rollers.
  • a disadvantage of the known device is also its low efficiency, caused by high frictional forces of the rollers in the grooves of the tapered guides, in particular at the moment when they are wedged in the grooves of these guides.
  • a device for rolling in pipes which contains a housing and a rolling-in element arranged thereon at an angle to its geometric longitudinal axis and which is mounted in bearings on a pin (SU, A, 394133).
  • This device is complicated in terms of its design, has a low efficiency due to high frictional forces in the machining area, as a result of which the load to be transmitted from the rolling element to the pipe is reduced, and is used solely for rolling in the pipe ends.
  • This invention aims to improve the operational safety of the pipe rolling apparatus.
  • Another purpose of the invention is also to extend the life of the device.
  • Another purpose of the invention is to accelerate the rolling process of profile or squeezed pipes.
  • the invention has for its object to provide a device for rolling pipes, the rolling element is designed so that there by the friction in the area of its contact with the pipe substantially reduced and at the same time the load to be transmitted is increased.
  • a device for rolling in pipes comprising a housing and a rolling-in element arranged thereon at an angle to its geometric longitudinal axis and mounted in bearings on a pin
  • the rolling-in element is designed as a spherical segment, the outer surface of which is formed by mutually alternating sections of a spherical surface and side surfaces of cylinders, the geometric axis of which extend in a plane perpendicular to the pin axis.
  • the device according to the invention allows, thanks to the aerodynamic shape of the active surface of the rolling element mentioned, the friction in the area of its contact with the pipe to be processed to be significantly reduced and the load to be transmitted to be increased considerably, so that the rolling speed increases and the quality is remarkable be improved.
  • the device for rolling pipes has a housing 1 (FIG. 1) with a pin 2 (FIG. 2), to which a rolling element 3 is attached.
  • the pin 2 lies at an angle to the geometric longitudinal axis of the housing 1, the rolling-in element 3 being mounted on the pin 2 in ball bearings 4 and 5.
  • the rolling element 3 has a bore 6, which is closed with a screw 7.
  • the contact surface of the pin 2 with the roll-in element 3 is sealed by means of a seal 8.
  • the roll-in element 3 has the shape of a spherical segment 9 (FIG. 1), the outer surface of which is formed by mutually alternating sections of the spherical surface 10 (FIGS. 1, 3) and side surfaces of cylinders 11, the geometrical axes 12 of which in a to the geometrical longitudinal axis 13 of the Pin 2 vertical plane (ie, below 90 °) and pass through the center 0, from which the ball segment 9 is formed.
  • the common intersection 14 (FIG. 3) of the side surfaces of the cylinders 11 lies at the tip of the rolling element 3.
  • the device operates as follows.
  • This invention is suitable for the rolling in of profile tubes, which are used for covering complication areas in the drilling process, and for the smoothing of crushed casing tubes.

Abstract

Le dispositif est destiné à mandriner les tubes profilés qui sont montés pour obturer des zones difficiles de forage de puits, ainsi que pour redresser des tubages déformés. Le dispositif comprend une structure (1) et un élément de mandrinage (3) monté dans des coussinets (4, 5) sur un tourillon (2) situé sur la structure (1) et faisant angle avec l'axe longitudinal de cette dernière. L'élément de mandrinage (3) comporte un segment sphérique (9) dont la surface externe est constituée de sections interchangeables de surfaces sphériques (10) et de surfaces latérales cylindriques (11), dont les axes géométriques sont situés dans un plan perpendiculaire à l'axe (13) du tourillon (2).The device is intended to mandrel the profiled tubes which are mounted to close difficult drilling zones for wells, as well as to straighten deformed casings. The device comprises a structure (1) and a chuck element (3) mounted in bearings (4, 5) on a pin (2) located on the structure (1) and at an angle with the longitudinal axis of the latter. The mandrel element (3) comprises a spherical segment (9), the external surface of which consists of interchangeable sections of spherical surfaces (10) and cylindrical lateral surfaces (11), the geometric axes of which are situated in a plane perpendicular to the axis (13) of the journal (2).

Description

Die Erfindung bezieht sich auf die Bohrtechnik und betrifft insbesondere eine Vorrichtung zum Einwalzen von Rohren.The invention relates to drilling technology and relates in particular to a device for rolling pipes.

Am besten eignet sich diese Erfindung für das Einwalzen von Profilrohren, die für die Abdeckung von Komplikationszonen im Bohrvorgang eingesetzt werden, die durch einen intensiven Spülungs- und Zementschlämmenverlust, durch einen Flüssigkeits- bzw. Gaszufluß aus der angebohrten Schicht in die Bohrung gekennzeichnet sind und die durch einen Nachfall entstehen.This invention is best suited for the rolling in of profile tubes which are used for covering complication zones in the drilling process, which are characterized by an intensive loss of flushing and cement slurry, by a liquid or gas inflow from the drilled layer into the bore and the caused by an accident.

Zugrundeliegender Stand der TechnikUnderlying state of the art

Beim Niederbringen von Tiefbohrungen zur Erdöl- bzw. Gasförderung trifft man öfters Schichten, die miteinander nicht verträglich sind, d.h., Schichten mit anomal hohem bzw. niedrigem Schichtdruck, sowie Schichten mit einem Nachfall an.When drilling deep wells for oil or gas production, layers are often found that are incompatible with one another, i.e. layers with abnormally high or low layer pressure, as well as layers with a fall.

Bisher wurden derartige Schichten durch das Einfahren von zusätzlichen kürzeren und Zwischenrohrtouren abgedeckt. Diese Maßnahmen erfordern jedoch einen hohen Materialaufwand, bedingt durch eine abdingbare Zementation der Rohrtouren innerhalb der Bohrung sowie durch einen hohen Aufwand an Metall, Zement und Arbeitszeit. Hinzu kommt, daß nach dem Einbau einer weiteren Rohrtour der Bohrlochdurchmesser abnimmt, wodurch sich die Betriebsbedingungen verschlechtern.So far, such layers have been covered by running in additional shorter and intermediate pipe tours. However, these measures require a large amount of material, due to the need for cementation of the pipe tours within the borehole as well as a high amount of metal, cement and working time. In addition, after installing another pipe tour, the borehole diameter decreases, which worsens the operating conditions.

Um das weitere Bohren ohne Abnahme des vorbestimmten Bohrlochdurchmessers sicherzustellen, wird derzeit der Bohrlochabschnitt in der Zone der aufgeschlossenen, nach den Bohrverhältnissen komplizierter gewordenen Schicht erweitert, und in dem erweiterten Bohrlochabschnitt wird, z.B., eine Profilrohrtour gesetzt, die gegen die Wandung des erweiterten Bohrlochabschnittes durch die Erzeugung darin eines Druckes mit späterer Kalibrierung ihres inneren Durchlaßkanals auf den vorgegebenen Bohrlochdurchmesser unter Verwendung eines Rohreinwalzapparates gedrückt wird.In order to ensure further drilling without decreasing the predetermined borehole diameter, the borehole section is currently being expanded in the zone of the open-ended layer, which has become more complicated according to the drilling conditions, and in the expanded borehole section, for example, a profiled tube tour is set which runs through the wall of the enlarged borehole section the generation therein of a pressure with subsequent calibration of its inner passage channel is pressed to the predetermined borehole diameter using a pipe rolling apparatus.

Es ist bereits eine Vorrichtung zum Einwalzen von Futterrohren (SU, A, 371340) bekannt, die ein Gehäuse aufweist, das mit einer Kegelführung mit Nuten, in denen Einwalzelemente in Form von zylindriscnen Rollen bewegbar angeordnet sind, starr verbunden ist. Die Nuten verlaufen in einem Winkel zur Gehäuseachse, wobei ihr Unterteil relativ zu dem Oberteil in Drehrichtung der Vorrichtung versetzt ist.A device for rolling in casing pipes (SU, A, 371340) is already known, which has a housing which is rigidly connected to a cone guide with grooves in which rolling-in elements in the form of cylindrical rollers are arranged movably. The grooves run at an angle to the housing axis, with their lower part being offset relative to the upper part in the direction of rotation of the device.

An den Gestängerohren fährt man die Vorrichtung in die Bohrung bis an den zerquetschten Abschnitt der Futterrohre ein und beginnt mit der Drehung, indem eine bestimmte Belastung aufrechterhalten wird, dabei wälzen sich die Rollen über den zerquetschten Futterrohrabschnitt und glätten diesen.On the drill pipes, the device is inserted into the bore up to the crushed section of the casing and begins to rotate by maintaining a certain load, the rollers roll over the crushed casing section and smooth it.

Nachteilig wirkt sich bei dieser Vorrichtung ihre geringe Betriebssicherheit aus, weil die in den Nuten der Kegelführung des Gehäuses angeordneten Rollen infolge der Eindringung der Schwebepartikel, einschließlich Schleifpartikel, aus der im Bohrloch enthaltenen Flüssigkeit in diese Nuten verkeilt und schnell verschlissen werden.A disadvantage of this device is its low operational reliability because the rollers arranged in the grooves of the tapered guide of the housing are wedged into these grooves and quickly worn out due to the penetration of the suspended particles, including grinding particles, from the liquid contained in the borehole.

Ein weiterer Nachteil der Vorrichtung besteht in einer geringen Einwalzgeschwidigkeit von Rohren auf Grund hoher Reibkräfte der Rollen in den Nuten der Kegelführung des Gehäuses.Another disadvantage of the device is the low rolling-in speed of pipes due to the high frictional forces of the rollers in the grooves of the taper guide of the housing.

Es ist ferner eine Vorrichtung zum Einwalzen von Futterrohren nach deren Zerquetschen im Bohrloch (SU, A, 467994) bekannt, die ein Gehäuse in Form einer geraden und einer rückläufigen Kegelführung mit Nuten, in denen in einem Winkel zur geometrischen Längsachse des Gehäuses in Lagern Einwalzelemente in Form von Kegelrollen, deren größere Grundflächen dem Mittelpunkt des Gehäuses zugewandt sind, montiert sind, enthält.There is also known a device for rolling in casing after crushing it in the borehole (SU, A, 467994), which has a housing in the form of a straight and a retrograde tapered guide with grooves in which rolling elements in bearings at an angle to the geometric longitudinal axis of the housing in the form of tapered rollers, the larger bases of which face the center of the housing, are mounted.

Die Arbeitsweise dieser Vorrichtung ist der eingangs beschriebenen ähnlich.The operation of this device is similar to that described above.

Als Hauptnachteil der bekannten Vorrichtung gilt eine geringfügige Festigkeit der Lager deren Rollen, wodurch diese keinen für das Einwalzen der Profilrohre erforderlichen hohen Belastungen ausgesetzt werden dürfen und folglich der Effekt durch das Einwalzen der besagten Rohre zurückgeht.The main disadvantage of the known device is the low strength of the bearings, their rollers, whereby these must not be exposed to the high loads required for rolling in the profiled tubes and consequently the effect of rolling in the said tubes is reduced.

äin weiterer Nachteil zeigt sich in der schlechten Funktionstüchtigkeit, dadurch veranlaßt, daß Schwebe- und Schleifpartikel aus der im Bohrloch vorhandenen Flüssigkeit in die Nuten mit den darin befindlichen Rollen eindringen, was ebenfalls ein Verkeilen und einen schnellen Verschleiß der Rollen nach sich zieht.A further disadvantage is the poor functionality, caused by floating and grinding particles from the liquid in the borehole penetrating into the grooves with the rollers therein, which also entails wedging and rapid wear of the rollers.

Ein Nachteil der bekannten Vorrichtung ist auch ihr niedriger Wirkungsgrad, verursacht durch hohe Reibkräfte der Rollen in den Nuten der Kegelführungen, im besonderen im Augenblick deren Verkeilung in den Nuten dieser Führungen.A disadvantage of the known device is also its low efficiency, caused by high frictional forces of the rollers in the grooves of the tapered guides, in particular at the moment when they are wedged in the grooves of these guides.

Es ist eine Vorrichtung zum Einwalzen von Rohren bekannt, die ein Gehäuse und ein an diesem unter einem Winkel zu seiner geometrischen Längsachse angeordnetes Einwalzelement, das in Lagern an einem Zapfen montiert ist, enthält (SU, A, 394133).A device for rolling in pipes is known which contains a housing and a rolling-in element arranged thereon at an angle to its geometric longitudinal axis and which is mounted in bearings on a pin (SU, A, 394133).

Diese Vorrichtung ist nach ihrer konstruktiven Auslegung kompliziert, weist auf Grund hoher Reibkräfte im Bearbeitungsbereich einen niedrigen Wirkungsgrad auf, wodurch die von dem Einwalzelement her auf das Rohr zu übertragende Last verringert wird, und sie dient einzig und allein für das Einwalzen der Rohrenden.This device is complicated in terms of its design, has a low efficiency due to high frictional forces in the machining area, as a result of which the load to be transmitted from the rolling element to the pipe is reduced, and is used solely for rolling in the pipe ends.

Diese Erfindung bezweckt eine Verbesserung der Betriebssicherheit der Vorrichtung zum Einwalzen von Rohren.This invention aims to improve the operational safety of the pipe rolling apparatus.

Ein anderer Zweck der Erfindung ist es auch, die Lebensdauer der Vorrichtung zu verlängern.Another purpose of the invention is also to extend the life of the device.

Ein weiterer Zweck der Erfindung ist die Beschleunigung des Einwalzvorganges von Profil- bzw. gequetschten Rohren.Another purpose of the invention is to accelerate the rolling process of profile or squeezed pipes.

Der Erfindung liegt die Aufgabe zugrunde, eine vorrichtung zum Einwalzen von Rohren zu schaffen, deren Einwalzelement konstruktiv so ausgeführt ist, daβ dadurch die Reibung im Bereich dessen Berührung mit dem Rohr im wesentlichen verringert und zugleich die darauf zu übertragende Last erhöht wird.The invention has for its object to provide a device for rolling pipes, the rolling element is designed so that there by the friction in the area of its contact with the pipe substantially reduced and at the same time the load to be transmitted is increased.

Offenbarung der ErfindungDisclosure of the invention

Diese Aufgabe wird dadurch gelöst, daß bei einer Vorrichtung zum Einwalzen von Rohren, enthaltend ein Gehäuse und ein daran zu dessen geometrischer Längsachse in einem Winkel angeordnetes Einwalzelement, das in Lagern an einem Zapfen montiert ist, erfindungsgemäß das Einwalzelement als Kugelsegment ausgeführt ist, dessen Außenfläche durch untereinander abwechselnde Abschnitte einer Kugelfläche und Seitenflächen von Zylindern, deren geometrische Achse in einer zur Zapfenachse senkrecht liegenden Ebene verlaufen, gebildet ist.This object is achieved in that, in a device for rolling in pipes, comprising a housing and a rolling-in element arranged thereon at an angle to its geometric longitudinal axis and mounted in bearings on a pin, the rolling-in element is designed as a spherical segment, the outer surface of which is formed by mutually alternating sections of a spherical surface and side surfaces of cylinders, the geometric axis of which extend in a plane perpendicular to the pin axis.

Die erfindungsgemäße Vorrichtung gestattet es, dank der genannten strömungsgünstigen Gestalt der Wirkfläche des Einwalzelementes die Reibung im Bereich dessen Berührung mit dem zu bearbeitenden Rohr erheblich zu verringern und die auf dieses zu übertragende Last wesentlich zu steigern, so daß die Einwalzgeschwindigkeit erhöht und die -qualität beachtlich verbessert werden.The device according to the invention allows, thanks to the aerodynamic shape of the active surface of the rolling element mentioned, the friction in the area of its contact with the pipe to be processed to be significantly reduced and the load to be transmitted to be increased considerably, so that the rolling speed increases and the quality is remarkable be improved.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Andere Ziele und Vorteile der Erfindung werden aus der nachstehenden detaillierten Beschreibung deren Ausführungsbeispiels und den beigelegten Zeichnungen besser verstanden, in denen zeigt:

  • Fig. 1 die Gesamtansicht einer Vorrichtung beim i Einwalzen eines Profilrohres im Bohrloch,
  • Fig. 2 dito mit einem Einwalzelement, das in einem Schnitt dargestellt ist,
  • Fig .3 eine Ansicht in Pfeilrichtung A der Fig. 1,
  • Fig. 4 einen Schnitt nach der Linie IV-IV der Fig. 2 und
  • Fig. 5 einen Schnitt nach der Linie V-V der Fig. 2.
Other objects and advantages of the invention will be better understood from the following detailed description of its embodiment and the accompanying drawings, in which:
  • 1 shows the overall view of a device when i roll in a profile tube in the borehole,
  • 2 ditto with a roll-in element, which is shown in a section,
  • 3 is a view in the direction of arrow A of FIG. 1,
  • Fig. 4 is a section along the line IV-IV of Fig. 2 and
  • 5 shows a section along the line VV of FIG. 2nd

Bevorzugte Ausführungsform der ErfindungPreferred embodiment of the invention

Die Vorrichtung zum Einwalzen von Rohren hat ein Gehäuse 1 (Fig. 1) mit einem Zapfen 2 (Fig. 2), an welchem ein Einwalzelement 3 angebracht ist. Der Zapfen 2 liegt in einem Winkel zur geometrischen Längsachse des Gehäuses 1, wobei das Einwalzelement 3 am Zapfen 2 in Kugellagern 4 und 5 montiert ist. Für das Drücken eines Schmiermittels in die Lager 4, 5 weist das Einwalzelement 3 eine Bohrung 6 auf, die mit einer Schraube 7 geschlossen wird. Die Berührungsfläche des Zapfens 2 mit dem Einwalzelement 3 ist mittels einer Dichtung 8 abgedichtet.The device for rolling pipes has a housing 1 (FIG. 1) with a pin 2 (FIG. 2), to which a rolling element 3 is attached. The pin 2 lies at an angle to the geometric longitudinal axis of the housing 1, the rolling-in element 3 being mounted on the pin 2 in ball bearings 4 and 5. For pressing a lubricant into the bearings 4, 5, the rolling element 3 has a bore 6, which is closed with a screw 7. The contact surface of the pin 2 with the roll-in element 3 is sealed by means of a seal 8.

Das Einwalzelement 3 hat die Form eines Kugelsegmentes 9 (Fig. 1), dessen Außenfläche durch untereinander abwechselnde Abschnitte der Kugelfläche 10 (Fign. 1, 3) und Seitenflächen von Zylindern 11 gebildet ist, deren geometrische Achsen 12 in einer zur geometrischen Längsachse 13 des Zapfens 2 senkrechten Ebene (d.h., unter 90°) liegen und den Mittelpunkt 0 durchlaufen, von welchem an das Kugelsegment 9 gebildet ist. Der gemeinsame Schnittpunkt 14 (Fig. 3) der Seitenflächen der Zylinder 11 liegt an der Spitze des Einwalzelementes 3.The roll-in element 3 has the shape of a spherical segment 9 (FIG. 1), the outer surface of which is formed by mutually alternating sections of the spherical surface 10 (FIGS. 1, 3) and side surfaces of cylinders 11, the geometrical axes 12 of which in a to the geometrical longitudinal axis 13 of the Pin 2 vertical plane (ie, below 90 °) and pass through the center 0, from which the ball segment 9 is formed. The common intersection 14 (FIG. 3) of the side surfaces of the cylinders 11 lies at the tip of the rolling element 3.

Es bieten sich mehrere Varianten (nicht gezeigt) für die Ausführung des Einwalzelementes 3 an: mit einer Versetzung der Achsen 12 um einen gewissen Abstand von der Achse 13 her des Einwalzelementes 3 in einer dazu senkrecht verlaufenden Ebene; mit einer Versetzung der Ebene mit den darin verlaufenden Achsen 12 unterhalb des Mittelpunktes 0 des Einwalzelementes 3; Ausführung konkaver (hyperbolischer) Rotationsflächen anstelle der Zylinderflächen 11.There are several variants (not shown) for the implementation of the rolling element 3: with a displacement of the axes 12 by a certain distance from the axis 13 of the rolling element 3 in a plane running perpendicular thereto; with a displacement of the plane with the axes 12 running therein below the center 0 of the rolling element 3; Execution of concave (hyperbolic) rotating surfaces instead of the cylindrical surfaces 11.

Die Vorrichtung wird wie folgt betrieben.The device operates as follows.

Nach dem Einfahren der Profilrohre 15 ins Bohrloch oder in die Futterrohrtour 16 (zur Abdeckung des Komplikationsbereiches), wie das in Fig. 1 erkennbar ist, und nach der Ausbesserung der Rohre 15 durch einen inneren Flüssigkeitsdruck bleiben noch längsverlaufende Falten 17 (Fig. 4) an ihrer Umfangslinie bestehen. Die Vorrichtung wird mit den Gestängerohren 18 (Fign. 1 und 2) zusammengeschraubt und ins Bohrloch bzw. die Futterrohrtour 16 eingefahren. Das Einwalzelement 3 dringt dank der strömungsgünstigen Form seiner Wirkfläche ins Innere der Profilrohre 15 ein und glättet während der Drehung der Gestängerohre 18 die durch den Flüssigkeitsdruck nicht geglätteten Falten 17, wobei zugleich die gesamte Innenfläche der Profilrohre 15 kalibriert wird und diese gegen die Bohrlochwandung bzw. die Futterrohrtour fest gedrückt werden (Fig. 5).After the profile tubes 15 have been driven into the borehole or into the casing tube tour 16 (to cover the complication area), as can be seen in FIG. 1, and after the tubes 15 have been repaired by an internal one Ren fluid pressure remain longitudinal folds 17 (Fig. 4) on their circumference. The device is screwed together with the drill pipes 18 (FIGS. 1 and 2) and inserted into the borehole or the casing tour 16. The rolling element 3 penetrates into the interior of the profile tubes 15 thanks to the aerodynamic shape of its active surface and smoothes the folds 17 not smoothed by the liquid pressure during the rotation of the drill tubes 18, the entire inner surface of the profile tubes 15 being calibrated at the same time and these against the borehole wall or the casing tour are pressed firmly (Fig. 5).

Gewerbliche AnwendbarkeitIndustrial applicability

Diese Erfindung eignet sich für das Einwalzen von Profilrohren, die für die Abdeckung von Komplikationsbereichen im Bohrvorgang zum Einsatz gelangen, sowie für das Glätten von zerquetschten Futterrohren.This invention is suitable for the rolling in of profile tubes, which are used for covering complication areas in the drilling process, and for the smoothing of crushed casing tubes.

Claims (1)

Vorrichtung zum Einwalzen von Rohren, enthaltend ein Gehäuse (1) und ein daran zu dessen geometrischer Längsachse in einem Winkel angeordnetes Einwalzelement (3), das in Lagern (4, 5) an einem Zapfen (2) montiert ist, dadurch gekennzeichnet, daß das Einwalzelement (3) als Kugelsegment (9) ausgeführt ist, dessen Außenfläche durch untereinander abwechselnde Abschnitte einer Kugelfläche (10) und Seitenflächen von Zylindern (11), deren geometrische Achsen (12) in einer zur Zapfenachse (13) senkrecht liegenden Ebene verlaufen, gebildet ist.Device for rolling in pipes, comprising a housing (1) and a roll-in element (3) arranged at an angle to the longitudinal axis thereof, which is mounted in bearings (4, 5) on a pin (2), characterized in that Roll-in element (3) is designed as a spherical segment (9), the outer surface of which is formed by mutually alternating sections of a spherical surface (10) and side surfaces of cylinders (11), the geometrical axes (12) of which run in a plane perpendicular to the journal axis (13) is.
EP89902699A 1988-11-22 1989-06-08 Pipe roller-expanding device Expired - Lifetime EP0397875B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/SU1988/000238 WO1990005831A1 (en) 1988-11-22 1988-11-22 Pipe roller-expanding device
CA000609485A CA1322151C (en) 1988-11-22 1989-08-25 Device for expanding pipes

Publications (3)

Publication Number Publication Date
EP0397875A1 true EP0397875A1 (en) 1990-11-22
EP0397875A4 EP0397875A4 (en) 1992-01-08
EP0397875B1 EP0397875B1 (en) 1994-02-16

Family

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Application Number Title Priority Date Filing Date
EP89902699A Expired - Lifetime EP0397875B1 (en) 1988-11-22 1989-06-08 Pipe roller-expanding device

Country Status (7)

Country Link
US (1) US5014779A (en)
EP (1) EP0397875B1 (en)
AU (1) AU621350B2 (en)
CA (1) CA1322151C (en)
DE (1) DE3887905D1 (en)
NO (1) NO174637C (en)
WO (1) WO1990005831A1 (en)

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Cited By (9)

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WO1993025799A1 (en) * 1992-06-09 1993-12-23 Shell Internationale Research Maatschappij B.V. Method of creating a wellbore in an underground formation
US5861318A (en) * 1994-11-16 1999-01-19 Pharmacia & Upjohn Company Scintillation proximity assay for N-acetylgalactosaminyltransferase activity
EP0952306A1 (en) * 1998-04-23 1999-10-27 Shell Internationale Researchmaatschappij B.V. Foldable tube
WO1999055999A1 (en) * 1998-04-23 1999-11-04 Shell Internationale Research Maatschappij B.V. Foldable tube
US6446724B2 (en) 1999-05-20 2002-09-10 Baker Hughes Incorporated Hanging liners by pipe expansion
US6561271B2 (en) 1999-05-20 2003-05-13 Baker Hughes Incorporated Hanging liners by pipe expansion
US6598677B1 (en) 1999-05-20 2003-07-29 Baker Hughes Incorporated Hanging liners by pipe expansion
US6631765B2 (en) 1999-05-20 2003-10-14 Baker Hughes Incorporated Hanging liners by pipe expansion
US6915852B2 (en) 1999-05-20 2005-07-12 Baker Hughes Incorporated Hanging liners by pipe expansion

Also Published As

Publication number Publication date
US5014779A (en) 1991-05-14
DE3887905D1 (en) 1994-03-24
EP0397875B1 (en) 1994-02-16
AU3189889A (en) 1990-06-12
CA1322151C (en) 1993-09-14
NO174637B (en) 1994-02-28
NO903219L (en) 1990-07-18
AU621350B2 (en) 1992-03-12
EP0397875A4 (en) 1992-01-08
NO903219D0 (en) 1990-07-18
WO1990005831A1 (en) 1990-05-31
NO174637C (en) 1994-06-08

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