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Número de publicaciónEP0162000 A1
Tipo de publicaciónSolicitud
Número de solicitudEP19850630049
Fecha de publicación21 Nov 1985
Fecha de presentación4 Abr 1985
Fecha de prioridad16 Abr 1984
Número de publicación1985630049, 85630049, 85630049.6, EP 0162000 A1, EP 0162000A1, EP-A1-0162000, EP0162000 A1, EP0162000A1, EP19850630049, EP85630049
InventoresWilliam Roger Hamilton
SolicitanteHughes Tool Company
Exportar citaBiBTeX, EndNote, RefMan
Enlaces externos:  Espacenet, Registro europeo de patentes
Top drive well drilling apparatus with removable link adapter
EP 0162000 A1
Resumen
A well drilling apparatus having a drive unit for rotating a drill string (27). A stem (25) extends downward from the drive unit and during tripping a link adapter (35) is removably connected to the stem (25). During tripping, an elevator (31) is suspended from the link adapter (35) by a pair of links (33), and the drill string (27) is held by the elevator (31).
Imágenes(3)
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Reclamaciones(5)
1. A well drilling apparatus, comprising :
a drive unit (19), for rotating a drill string (27) about the longitudinal axis of the drill string; and
a stem (25) extending downward from the drive unit (19) , to which the drill string (27) may be removably connected, for transmitting torque from the drive unit to the drill string; characterized by
a link adapter (35), removably connected to the stem (25), so that the link adapter may be removed from the stem during drilling;
a pair of elevator links (33) suspended from the link adapter (35) and
an elevator (31) suspended from the elevator links (33) for suspending the drill string (27) during tripping.
2. A wel- drilling apparatus according to claim 1, characterized by alignment means (45,49) for aligning the link adapter (35) on the stem (25).
3. A well drilling apparatus , according to claim 1 or 2, characterized in that said stem (25) has an upward facing shoulder (53) and that said link adapter (35) has a downward facing shoulder (51) for engagement with the shoulder (53) on the stem (25).
4. A well drilling apparatus according to anyone of the claims 1 to 3, characterized by an elevator, suspended from the elevator links, for stabilizing means (37) for stabilizing the links (33).
5. A well drilling apparatus according to anyone of the claims 1 to 4 characterized by tilting means (29,37) for tilting the links (33) to a non-vertical position.
Descripción
  • [0001]
    This invention relates in general to a well drilling apparatus and in particular to a top drive well drilling apparatus.
  • [0002]
    A top drive drilling system rotates a drill string from the top, rather than using a rotary table, a kelly, and a kelly bushing. An electric drilling motor is suspended from the drilling rig's conventional swivel and is attached to the top of the drilling string. The drilling motor may also be attached to a carriage, which is guided by a pair of vertical tracks. The drilling motor is connected to the drill string by a cyclindrical stem, which extends downward from the motor. A wrench assembly is also suspended from the drilling motor, in order to brack out or make up connections between the stem and the drill string. A link adapter, on the stem, supports a pair of links, which in turn support an elevator below the bottom of the stem. As the drill string is drilled down, the elevator will contact the floor of the drilling rig. If the elevator and the wrench assembly could be moved out of the way, the drill string could be drilled down further before additional lengths of pipe must be added to the drill string.
  • [0003]
    The present invention is a top drive well drilling apparatus in which the link adapter is removable from the stem, so that link adapter, links, and elevator may be removed from the stem during drilling. The link adapter and the stem have alignment means for aligning the link adapter on the stem, and a downward facing shoulder on the link adapter engages an upward facing shoulder on the stem. The link adapter also has means for stabilizing the links and for tilting the links to a non-vertical position.
  • [0004]
    The above, as well as additional objects, features, and advantages of the invention, will become apparent in the following detailed description of the invention which is shown by way of example in the attached drawings, wherein:
    • Figure 1 is a perspective view of a drilling apparatus during a drilling operation;
    • Figure 2 is a side view of a link adapter, and an elevator during a tripping operation;
    • Figure 3 is a top view of a link adapter ; and
    • Figure 4 is a side view of a link adapter.
  • [0005]
    Figure 1 illustrates a top drive well drilling apparatus of the invention. A conventional traveling block 13 and a conventional hook 15 are suspended by cables 17 from the top of an oil we2i derrick. A drive unit 19 is suspended from the hook 15 and mounted on a carriage 21. The drive unit 19 is a drilling motor of a conventional type. The carriage 21 guides the drive unit 19 up and down along a pair of vertical guide tracks 23. A cylindrical quill, or stem 25, extends downward from the drive unit 19, and connects to the top of a drill string 27. The drill string 27 consists of a: series of pipe sections and has a rotary rock bit attached at the bottom for drilling a well bore.
  • [0006]
    A wrench assembly 29 is provided for making up the connection between the stem 25 and the drill string 27. The wrench assembly is mounted to the carriage 21, and is capable of moving between a working position along the stem 25, or the axis of the drill string 27, and a retracted position away from the axis of the drill string 27. The wrench assembly 29 is also capable of moving vertically along the stem 25 and the drill string 27.
  • [0007]
    Figure 2 illustrates a portion of the top drive well drilling apparatus during a tripping operation. The drill string 27 is not connected directly to the stem 25, but is suspended from a conventional pipe elevator 31. The elevator 31 is suspended from a pair of links 33 which depend from a link adapter 35. A link stabilizer 37 is connected between the link adapter 35 and the links 33. The link stabilizer 37 stabilizes the links 33 and, in cooperation with a hydraulic cylinder 39, may also be used to tilt the links 33 to a non-vertical position. The link stabilizer 37 is thus a stabilizing means for stabilizing the links 33, and is also a tilting means for tilting the links 33 to a non-vertical position. A bell 41 is attached to the lower end of the stem 25 to facilitate makeup between the drill string 27 and the stem 25, if the drill string 27 and the stem 25 have to be reconnected while the link adapter 35 is still in place.
  • [0008]
    Figures 3 and 4 are close-up views of the removable link adapter 35. The link adapter 35 has a central bore 43, adapted to receive the stem 25. The link adapter 35 has a door 45, which can be opened to allow the link adapter 35 to be placed around the stem 25. Once the link adapter 35 has been positioned on the stem 25, the door 45 may be secured with the pins 47. The door 45 is adapted to engage an alignment dog 49 (shown in Fig. 1) on the stem 25. The door 45 and the alignment dog 49 are thus an alignment means for aligning the link adapter 35 on the stem 25. The bore 43 of the link adapter 35 has a downward facing shoulder 51, which is adapted to engage an upward facing shoulder 53 (shown in Fig. 1) on the stem.
  • [0009]
    In operation, the well drilling apparatus is in the configuration shown in Fig. 1 during the drilling of a well bore. However, there are times when drilling must be stopped and the drill string 27 must be removed from the well bore. For example, the drill string 27 must be removed from the well bore occasionally in order to replace a worn drill bit. The process of removing the drill string 27 from the well bore, and then reinserting the drill string 27 back into the well bore, is known as a tripping operation. During a tripping operation the drill string 27 is not connected directly to the stem 25, but is suspended from a pipe elevator 41, as shown in Fig. 2.
  • [0010]
    In order to change from the drilling configuration (Fig. 1 ) to the tripping configuration (Fig. 2), slips in the floor of the drilling rig are first set to hold the weight of the drill string 27. The wrench assembly 29 is then used to break out the connection between the drill string 27 and the stem 25. The stem 25 is then raised to separate the stem 25 from the drill string 27. The removable link adapter 35 is then placed around the stem 25, so that the downward facing shoulder 51 of the link adapter 35 engages the upward facing shoulder 53 on the stem 25. The alignment dog 49 insures that the link adapter 35 is properly aligned on the stem 25. The door 45 of the link adapter 35 is then closed and secured with pins 47. The conventional elevator 31 is now supended below the link adapter 35 by the links 33. The elevator 31 is then connected to the drill string 27 in a conventional manner.
  • [0011]
    In order to return to the drilling configuration, the steps explained above are merely reversed. The slips in the floor of the drilling rig are set to hold the drill string 27. Then the elevator 31 is removed from the drill string 27, and the link adapter 35 is removed from the stem 25. The stem 25 is then lowered to the drill string 27, and the wrench assembly 29 is used to make up the connection.
  • [0012]
    If, for some reason, it becomes necessary to reconnect the drill string 27 to the stem 25 while the link adapter 45 is in place, the drill string 27 may be set in the slips while the stem 25 is lowered onto the drill string 27. The bell 41 on the stem 25 will guide the drill string 27 to make a proper engagement.
  • [0013]
    The top drive well drilling apparatus of the invention has several significant advantages over the prior art. Since the links 33 and the elevator 31 do not hang down below the stem 25 during drilling, the drill string 27 can be drilled down further before additional lengths of pipe have to be added to the drill string. The invention also allows servicing or replacement of the link adapter 35, the links 33, and the elevator 31, without interrupting drilling.
  • [0014]
    While the invention has been shown in only one of its forms, it should be apparent to those skilled in the art that it is not so limited, but is susceptible to various changes and modifications without departing from the spirit thereof.
Citas de patentes
Patente citada Fecha de presentación Fecha de publicación Solicitante Título
FR2146954A1 * Título no disponible
US1967517 *26 Jun 193324 Jul 1934Lester B ClarkMethod and apparatus for handling pipe in wells
US3776320 *23 Dic 19714 Dic 1973Brown CRotating drive assembly
US3857450 *2 Ago 197331 Dic 1974Guier WDrilling apparatus
US3915244 *6 Jun 197428 Oct 1975Brown Cicero CBreak out elevators for rotary drive assemblies
US4209066 *17 Nov 197824 Jun 1980Watson Barry RMethod and apparatus for running tubular goods into and out of a borehole
US4396216 *30 Ago 19822 Ago 1983Hughes Tool CompanyLink engaging pipe elevator
Citada por
Patente citante Fecha de presentación Fecha de publicación Solicitante Título
CN105189911A *3 Mar 201423 Dic 2015伊特里克公司A top drive well drilling installation
US662279629 Nov 199923 Sep 2003Weatherford/Lamb, Inc.Apparatus and method for facilitating the connection of tubulars using a top drive
US668839829 Ene 200310 Feb 2004Weatherford/Lamb, Inc.Method and apparatus for connecting tubulars using a top drive
US670540516 Ago 199916 Mar 2004Weatherford/Lamb, Inc.Apparatus and method for connecting tubulars using a top drive
US672593829 Nov 199927 Abr 2004Weatherford/Lamb, Inc.Apparatus and method for facilitating the connection of tubulars using a top drive
US674259617 May 20011 Jun 2004Weatherford/Lamb, Inc.Apparatus and methods for tubular makeup interlock
US6976298 *16 Ago 199920 Dic 2005Weatherford/Lamb, Inc.Methods and apparatus for connecting tubulars using a top drive
US702137417 Dic 20034 Abr 2006Weatherford/Lamb, Inc.Method and apparatus for connecting tubulars using a top drive
US765432531 Oct 20072 Feb 2010Weatherford/Lamb, Inc.Methods and apparatus for handling and drilling with tubulars or casing
US766553115 Nov 200623 Feb 2010Weatherford/Lamb, Inc.Apparatus for facilitating the connection of tubulars using a top drive
US766966220 Jul 20052 Mar 2010Weatherford/Lamb, Inc.Casing feeder
US76904228 Feb 20076 Abr 2010Pilot Drilling Control LimitedDrill-string connector
US769474412 Ene 200613 Abr 2010Weatherford/Lamb, Inc.One-position fill-up and circulating tool and method
US771252314 Mar 200311 May 2010Weatherford/Lamb, Inc.Top drive casing system
US77438534 Dic 200629 Jun 2010Aker Kvaerner Mh AsTop drive drilling apparatus
US775775927 Abr 200720 Jul 2010Weatherford/Lamb, Inc.Torque sub for use with top drive
US779371931 Oct 200714 Sep 2010Weatherford/Lamb, Inc.Top drive casing system
US784541818 Ene 20067 Dic 2010Weatherford/Lamb, Inc.Top drive torque booster
US787435212 Dic 200625 Ene 2011Weatherford/Lamb, Inc.Apparatus for gripping a tubular on a drilling rig
US788290215 Nov 20078 Feb 2011Weatherford/Lamb, Inc.Top drive interlock
US789608415 Oct 20071 Mar 2011Weatherford/Lamb, Inc.Apparatus and methods for tubular makeup interlock
US791827323 Ene 20035 Abr 2011Weatherford/Lamb, Inc.Top drive casing system
US79310774 Dic 200626 Abr 2011Aker Kvaerner Mh AsTop drive drilling apparatus
US85170901 Ago 201227 Ago 2013Weatherford/Lamb, Inc.Apparatus and methods for tubular makeup interlock
US856751219 Ene 201129 Oct 2013Weatherford/Lamb, Inc.Apparatus for gripping a tubular on a drilling rig
USRE428779 Jul 20101 Nov 2011Weatherford/Lamb, Inc.Methods and apparatus for wellbore construction and completion
WO2007064231A1 *4 Dic 20067 Jun 2007Aker Kvaerner Mh AsTop drive drilling apparatus
WO2007064232A1 *4 Dic 20067 Jun 2007Aker Kvaerner Mh AsTop drive drilling apparatus
WO2014178709A1 *3 Mar 20146 Nov 2014Itrec B.V.A top drive well drilling installation
Clasificaciones
Clasificación internacionalE21B3/02, E21B19/02, E21B19/16
Clasificación cooperativaE21B19/02, E21B19/16
Clasificación europeaE21B19/02, E21B19/16
Eventos legales
FechaCódigoEventoDescripción
21 Nov 1985AKDesignated contracting states:
Designated state(s): DE FR GB
28 Ene 198718DDeemed to be withdrawn
Effective date: 19860722
8 Ago 2007RIN1Inventor (correction)
Inventor name: HAMILTON, WILLIAM ROGER