DE102006038763A1 - Device for holding drill pipes - Google Patents

Abstract

The device has an adjustable segments (5) provided with a conical outer contour, where clamp mounting of drill pipes is adjustable by the vertical adjustment of the segments opposite a ring body of a retaining unit (1) by a controllable servo cylinder that is attached above the segments. The servo cylinder charges in an outer region of the segments through ribs (9). The ribs hold a guide rod (8) with corresponding ribs (10) of the ring body, where the guide rod guides a stretchable pressure spring (14) between the ribs (9, 10).

Description

The The invention relates to a device for implementable vertical support of drill pipes, consisting of a plurality of successively arranged via connecting elements coupled pipe segments, for an insert on drilling platforms with a detachable mounting on the drilling table for inserting and extracting drill pipes, with the drill pipe a holding element for releasing or connecting the connecting elements of the pipe segments and handling via winches connected is.

such Arrangements are used in the range of offshore drilling platforms to the variety arranged one behind the other and connected to each other via connecting elements To connect or disconnect pipe segments. Here it is known Retracting retaining elements in the end of the pipe segment for handling, to the over appropriate Attack connections to a winch located above the pipe end, to make the connection between adjacent pipe segments or to solve.

there the drill pipe is additionally supported on the drilling table to prevent it from slipping off and a resulting sinking of the drill pipe into the water prevent.

The previous handling over the known retaining elements with the assembly and disassembly is relative consuming and is due to the existing conditions of use difficult.

The The object of the invention is a simple design of a holding element to create a fixation of the pipe segment with the required Security guaranteed and assembly and disassembly of the connecting elements of the pipe segments including the handling for inserting and pulling out of the drill pipe via a winch allows.

The solution This object is achieved according to the invention in that the retaining element in the form of a ring body can be placed on the drill pipe and outside elements for connection to the Wind has and the interior of the holding element for receiving the drill pipe by vertically adjustable segments as jaws to change the receiving diameter with a cylindrical receiving area has and the adjustable segments a conical outer contour exhibit and over a corresponding conical guide in the annular body of Retaining element are displaceable, wherein by the vertical adjustment opposite the segments the ring body by means of controllable adjusting elements a holder of the recorded Drill tube is adjustable.

By This arrangement is easy to handle by placing the ring body on the drill pipe as a holding element and adjusting a clamping device on the Segments reached, followed by a simple implementation on the other pipe segment is feasible.

A simple training is characterized in that the adjusting elements for the adjustment the segments through the ring body arranged compressed air cylinder are formed.

Around a uniform force distribution to enable It is suggested that the arranged compressed air cylinder as adjusting elements for the segments coupled together.

Further It is suggested that the Control elements over Ribs in the outdoor area attack the segments.

to provision the segments from the stop position is suggested that each Segment a tensioned by a vertical adjustment compression spring assigned.

to Arrangement of the segments is provided that the segments by means of a Guide rod via corresponding Ridges of the segments and the ring body are held.

Further It is suggested that the guide rod the tensionable compression spring between the ribs receives.

to Improvement of adaptation and increase of fixation is proposed that the receiving surface the segments for the drill pipes by inserted clamping elements with contact surfaces in shape a sawtooth profile exhibit.

Farther is provided that the Holding element designed as a hinged and lockable ring body is.

In the drawing is an embodiment of Invention shown schematically. Show it:

1 a side view of a holding element;

2 a plan view according to 1 ;

3 a partial section according to line III-III of 2 and

4 an enlarged detail view of the detail IV of 3 ,

In the illustrated arrangement is a Hal teelement 1 for receiving a drill pipe not shown in the form of a pipe segment shown as a hinged ring body. This ring body 1 is by two hinged swiveling elements 2 and 3 formed, which are closable and lockable after wrapping a pipe segment. Of course, it is possible, the retaining element as a closed annular body 1 form and on a pipe segment via a central receiving opening 4 take.

The receiving opening 4 is in its cross section over four segments 5 adjust, with the segments 5 formed as acting on the recorded pipe segment clamping jaws and are vertically adjustable. The segments have this 5 a conical outer contour 6 and a corresponding leadership 7 in the ring body as a holding element 1 ,

The segments 5 are doing over a guide rod 8th in the ring body 1 held, with the guide rod 8th over ribs 9 . 10 on the segment 5 and on the ring body 1 are held.

Above the segments 5 are pneumatic actuating cylinders 11 arranged over lines 12 are controllable and the segments 5 vertically down over an intermediate sleeve 13 Adjust as well as a reduction of the receiving opening 4 over the cone surfaces 6 and 7 bring about and perform a clamping action on the recorded pipe segment.

The adjusting cylinders 11 with the intermediate sleeve 13 act on the ribs 9 the segments 5 one.

To increase the restoring forces when releasing the clamping action is a tensioned compression spring 14 between the ribs 9 . 10 of the segment 5 and the retaining ring 1 on the guide rod 8th arranged.

The adjusting cylinders 11 are about a case 15 on the ring element 1 established.

The cylindrical receiving surface of the segments 5 for the drilling segments is used in this embodiment by clamping elements 16 formed with sawtooth profile.

To insert and remove the drill pipes is above the ring element 1 arranged with the recorded Bohrsegment a winch on the ring element 1 about elements 17 as a receptacle for shackles 18 or the like attack on both sides, as in 2 is indicated.

This makes it possible, the ring element 1 according set to the pipe segments for holding and implement and adjust over the winch positioning of the pipe segment to perform a mounting or dismounting of the connecting elements between the pipe segments.

Claims (9)

A device for convertible vertical support of drill pipes, comprising a plurality of successively arranged via pipe elements coupled pipe segments, for use on drilling platforms with a releasable support on the drilling table for inserting and removing drill pipes, wherein the drill pipe, a holding element for releasing or connecting the connecting elements the tube segments and handling is connected by winches, characterized in that the holding element ( 1 ) can be placed in the form of an annular body on the drill pipe and in the outer area elements ( 17 ) for connection to the winch and the interior ( 4 ) of the retaining element ( 1 ) for receiving the drill pipe by vertically adjustable segments ( 5 ) has as clamping jaws for changing the receiving diameter with a cylindrical receiving portion and the adjustable segments ( 5 ) a conical outer contour ( 6 ) and via a corresponding conical guide ( 7 ) in the ring body ( 1 ) of the holding element are displaceable, wherein by the vertical adjustment of the segments ( 5 ) relative to the annular body ( 1 ) by means of controllable adjusting elements ( 11 ) A holder of the recorded drill pipe is adjustable. Apparatus according to claim 1, characterized in that the adjusting elements ( 11 ) for the adjustment of the segments ( 5 ) by on the ring body ( 1 ) arranged compressed air cylinder are formed. Apparatus according to claim 1 or 2, characterized in that the arranged compressed air cylinder ( 11 ) as adjusting elements for the segments ( 5 ) are coupled together. Device according to one of claims 1 to 3, characterized in that the adjusting elements ( 11 ) over ribs ( 9 ) in the outer area of the segments ( 5 attack). Device according to one of Claims 1 to 4, characterized in that each segment ( 5 ) a tensionable by a vertical adjustment pressure spring ( 14 ) assigned. Device according to one of claims 1 to 5, characterized in that the segments ( 5 ) by means of a guide rod ( 8th ) via corresponding ribs ( 9 . 10 ) of the segments and the annular body ( 1 ) are held. Device according to one of claims 1 to 6, characterized in that the guide rod ( 8th ) the tensionable compression spring ( 14 ) between the ribs ( 9 . 10 ). Device according to one of claims 1 to 7, characterized in that the receiving surface of the segments ( 5 ) for the drill pipes by inserted clamping elements ( 16 ) with contact surfaces in the form of a sawtooth profile. Device according to one of claims 1 to 8, characterized in that the retaining element ( 1 ) is designed as a hinged and lockable ring body.