DE2262758A1 - DEVICE FOR THE INDEPENDENT CLASSIFICATION OF COILS THAT ARE FORMED BY A LONGITUDINAL, FLEXIBLE ELEMENT STORED IN A BASKET ROTATING A VERTICAL AXIS - Google Patents

Description

DIPL. ING. DIETRICH LEWAXD 8 MUNICH 4O PATENT Attorney FÜBSTENBERGSTHASSE

TELEPHONE 306514

THE

BIFX ₁ . IJfß. BIETHICH! LEWALXI 8 MUNICH IO KUBSTENBEBOSXBASSE 24

INSTITUT PRANCAIS DU PETROLE DES CARBOHANTS ET LOBRIPIANTS

Device for the automatic arrangement of windings ₉ which are stored by an elongated, flexible element in a basket rotating about a vertical axis

are educated »

The invention relates to a device for automatically classifying of turns stored by ain elongate resilient _s, in a about a vertical axis © rotating basket element formed

In the following particular ota _s © © JSI to that invention, however, it Warm limited to, d © s save a flexible drill pipe in a ring Brehkorb £ '6NA ± G® ^ shape which extends ₉ Besaig be taken around its vertical Achss dr @ M .

The Bohrtechnikeia, which are known as Botirgastäng © work with a flexible line, on whose Eoä © @io a motor rotating a boring tool

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especially in the foreground, which is justified by the advantages resulting from the application of these techniques is*

The flexible drilling lines must be stored and stored on special devices, for example to the To facilitate transport, but also the drilling operations, especially when the drilling column is pulled out of the borehole is"

Of course it has been thought of using a horizontal axis take-up reel on whose drums the flexible lines are wound up «. This solution has proven to be quite practical for the transport of sections of flexible drilling lines forming the drilling column proven “During the drilling operations you need, if the drilling column, which is generally of great length, is lifted, drums or rotary heads with large Storage capacity, d. h “Drums of considerable dimensions, which take up space, are difficult to realize and difficult to move from one drilling site to another.

In the field of drilling, baskets of annular shape that rotate about their vertical axes are preferred, these baskets being more practical than the apparatus with horizontal axes ο The problem is there that is to say in correctly arranging the turns formed by the flexible line in these storage baskets in order to prevent the turns formed by the line from getting mixed up or with respect to one another slide, which lead to local damage to the flexible cable and the maximum storage capacity of this Would decrease baskets "

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For this purpose, one already has a device for classifying the through an elongated yielding, in one to one vertical axis rotating storage basket mounted element formed with a series of vertical turns Proposed separation formations which are arranged concentrically with respect to each other and rig-shaped corridors which are slightly larger than the largest dimension of the straight cross-section of the elongated element » This settles in the ring-shaped passages and forms spirals, which are possible without sliding, from the partitions being held,

This solution gives excellent results; However, such storage baskets are still too space-consuming and considered too difficult if they are intended to be used on floating installations, especially floating ones Drilling installations to be provided ο

The invention is intended to eliminate these disadvantages or at least be reduced by a device for the automatic classification of the elongated, flexible, Spirals formed in a rotating basket with a vertical axis should be suggested *

To this end, the invention is based on an automatic device, which involves arranging the spirals formed by an elongated resilient element inserted in a rotating basket is mounted, this basket being driven in rotation about a vertical axis by a drive member is made possible

Daeser basket defines an annular space with a bottom IMD is open c-UEN enabling zn to facilitate the insertion of the elongate element, this element is set in motion as' Virlrurig exnes Yersebiebecrgans

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The invention is characterized in that the part of the elongated element between this sliding element and the storage basket forms at least a fraction of the free, non-tensile loop; and that it in combination with the pulling devices for this texl of the elongated, this fraction of the loop forming element means for guiding the elongate element when it is introduced into this basket on v / eist, these guide devices being non-rotatably connected to the storage basket and control devices on the one hand, the rotation of the storage basket with respect to d.Iäqgp of the elongated to exit from this displacement member

running element and on the other hand the length of the elongated element when running out of these pulling devices control the rotation of this storage basket.

An example embodiment of the invention is now intended are explained in more detail using the accompanying drawings,

in which '■

Fig. 1 shows schematically a drilling installation with a device according to the invention for storage the flexible conduit forming the drilling column in an annular manner around its vertical axis shows rotating basket;

Fig. 2 gives a functional diagram for a device the invention; and

Figo 3 shows in the form of a block diagram the operation of a device according to the invention,

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' shows ScheBiatis ^ h. a book installation using a device according to the invention for supporting the flexible conduit forming the drilling column in an annular cage rotating about its axis.

The installation comprises a drilling tower 1, which is arranged above a borehole 2, with 3 pulling elements for the designated by a flexible line 4 formed drilling column, which at the head of the drilling rig 1 via a deflection element 5 runs, which is shown here in the form of a roller or block disk firmly connected to the derrick 1 isto The pulling organs not forming part of the invention are not explained in any further detail here - you can choose from Ziehraupen or any other known device exist o

In the vicinity of the derrick is a basket 6 for storing the flexible drilling line 4 arranged; this basket can rotate around its vertical axis “The flexible line 4 settles in the basket by entering it from above.

The storage basket 6 consists of a cylindrical vertically disposed inner frame and a cylindrical, concentrically arranged to the frame 7 outer frame 8 _a The radial distance between the two frames is greater than the diameter of the flexible pipe 4 and the radius of the inner frame is at least equal to the minimum bend radius of the flexible line "The two frames 7 and 8 form an annular space, which is closed in its lower part by a platform"

The storage basket described above is driven in rotation by one or more _{motors not shown in Pig o} 1, the motors of hydraulic or electric

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higher education are:

The storage basket also has a hydraulic one Rotary adapter (not shown) connected, which makes it possible to use the flexible line permanently with hydraulic To feed fluid "

In order to obtain a correct classification of the turns formed by the flexible line 4 in the storage basket, one switches between the arranged at the head of the derrick 1 deflecting organ f> and the. Storage basket 6 between a carriage 9 movable along a rail 10, wherein the rail 10 the carriage 9 parallel to a radius of the storage basket 6 carries out “A” device of any type known per se, synchronizes the movement of the Carriage 9 and the rotation of the basket 6.

According to this exemplary embodiment, the carriage 9 enters Deflection element 11, over which the line 4 runs »The length the parts of the flexible line between the deflection members 5 and 11 is greater than the distance between them Ualenkorganen chosen to form a (fraction) part of a free loop 4a, which will be explained in more detail below will be.

When passing through the deflecting member 11, the line is in motion under the action of a pulling member, for example carried by the carriage 9 and shown at 12 is set, whereby this pulling element is operated by a hydraulic or electric motor *

At the exit from the pulling member 12, the flexible line 4 takes the form of a rope or a rope on the part 4b

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Chain line (d'une chalnette) before they are in basket 6 is filed "

If necessary, a guide shoe 13 limits the accidental deformations of the part 4b of the flexible line, which from remaining twists due to the inherent rigidity of the flexible cable or from its presence result of rigid connecting elements between two parts forming the flexible line.

The parts 4a and 4b of the flexible line are located in one and the same plane perpendicular to the guide rail

The movements of the various sliding elements described are controlled as indicated below ο

Figure 2 shows, schematically, an organization chart, which the Operation of the device explains "The same Reference symbols as in Figo 1 were used «

A detector 14 is associated with the block plate or roller 5 "This detector, which may be of any known type, supplies a for the length of flexible running around the pulley 5 line representative signal d _o h for the line at the exit from the Pulling element, not shown in the figure, takes place “The delivered signal is transmitted via a line 15 to an automatic control arrangement 16, which will be described later and which ensures the synchronization of the movements of all the elements forming the device

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The pulling element 12 is actuated by a hydraulic Hotor 37 for the case shown in FIGS. ₁ , 2, this motor being fed by a pump, the throughput of which is controlled by a servo valve 17, which in turn is remotely controlled by the control arrangement 16 via the line 18 is. A detector element 19 assigned to the pulling element 12 supplies a signal representative of the length of the flexible line running in the pulling element 12, the signal being transmitted to the control arrangement via the line 20.

A detector element 21 supplies a signal which is representative of the displacement of the carriage 9 on the slide rail or rail 10 and to the arrangement 16 via a line 22 is transmitted. This signal is representative of the radius of the spiral passing through the flexible line 4, which is deposited in the storage basket 6, is formed *

The storage basket is driven in rotation via a drive arrangement shown schematically at 23, which for example one or more hydraulic motors which are fed by one or more pumps, which in turn are actuated via one or more servo valves 24. These servo valves are controlled by the actuation arrangement via line 25. A detector element 26 is assigned to the storage basket 6 and delivers a for the rotation carried out by the storage basket 6 representative signal, this signal via the line 27 is transmitted to the arrangement 16.

The operation of the device is indicated below with reference to Figure 3 which schematically shows the control arrangement

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reproduces * The following description shows the operation of a device according to the invention and follows here the operations carried out during drilling, namely:

- Winding up of the drilling line in the cage when hieyen the drilling. column;

- Unwinding the flexible line while drilling;

- special modes of operation of the device.

I. Winding up the drilling line in the basket when lifting the Drilling column

The su solving problems are the storage basket 6 at an angle corresponding to the length of the over to rotate the deflection element 5 running line and for the formation and positioning of the spirals in the storage basket EU concerns.

So that the length of the spiral deposited in the basket 6 equal to the length of the running over the Uinlenkorgan 5 Line, one controls the rotation of the basket with respect to this line length, which is measured by the detector 14 will.

The detector 26 (Pig. 3) supplies a signal which is representative of the angle of rotation of the basket 6. This Signal is transmitted via line 27 to a first input of a corrector circuit 28, which is connected to a second input via line 22 receives the signal delivered by detector 21, this signal representative of the position of the carriage 9 on the rail 10, d. H. representative of the radius of the

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gripped spiral is. The corrector circuit 28 delivers its outer terminal a signal representative of the length of the stored spiral, that via a cable transmitted to a Singang of a comparator circle 30 will"

In a first position M (Fig. 3 shown) transmits a breaker I with two positions (M and P) to one second input of the Koaparatorkreisee 30 from the Detector 14 originating signal, this signal, as previously indicated, representative of the length of the Deflection element 5 is running line.

The circle 30 processes a for the comparison of the its two inputs applied signals representative signal, this resulting, via the line 25 transmitted signal controls the servo valve 24, which determines the operation of the motor 23 (Pig. 2) and the Carries basket 6 in rotation. The rotation of the basket is controlled with respect to the length of the line that runs over the deflection element 5 or assigned to this length.

Since, in practice, the inertia of the storage basket 6 is considerable the forming and arranging of the spirals in the basket 6 may not be satisfactory. Qd this disadvantage To remedy this, it is necessary that the part 4b of the line has a length and shape with a constant value, i.e. that the length of the spiral deposited in the basket 6 is necessarily equal to the length of the spiral which runs through the pulling element Line is. This is obtained by assigning the drive of the pulling organ to the movement of the storage basket 6 or controls accordingly. According to Fig. 3 this is through the Circuit 28 delivered signal via line 31 and the interrupter TI with two positions M and F (simultaneously

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r I ™ *

controlled with the breaker I) to a first input of a comparator circuit 32, which is connected to a second Input receives the signal transmitted over line 20 and supplied by detector 19, where this signal is representative of the length of the im Pulling element 12 is continuous line. The comparator circuit 32 provides a signal at its output terminal which results from the comparison of the signals applied to its inputs, this signal being applied via line 18 the servo valve 17 acts, which controls the operation of the motor 37 (Pig »2} which drives the pulling element 12. A regulation of the drive movement of the pulling member 12 is thus obtained, which has a low inertia with respect to it the rotation of the storage basket has <>

The inaccuracy in the control due to the considerable inertia of the basket 6 is completely due to the changes Compensated in the length of the loop 4a, which the flexible line between the deflection element 5 and the Pulling element 12 forms.

II - Unwinding the flexible pipe during the drilling operations

The operation of the drives is reversed by any known means, for example by using the The direction of flow of the hydraulic fluid in the drive units 37 and 23 reverses, the operation of the Apparatus is the same as that described above when the drilling rate is of the same order of magnitude what is the speed with which the drilling column is hoisted out of the borehole,

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In practice, theee miles are pretty rare; the rate of advance of the borehole is generally very high smaller than the lifting speed of the drilling column. The orenz value is made possible by the resolution of the detectors and the inertia of the hydraulic systems as well as the Moving masses do not have stable operation of the device at very low speeds.

In order to remedy these disadvantages, the operating personnel set the switches I and II to position F. The detector 14 is no longer connected to the comparator crate JO, the second input of which is via the switch I, the line 33 and a three-way switch C ₂ (positions T , A and P) ₁ and which is in position A, is connected to a generator β that is capable. To deliver signals identical to those supplied by the detector 14 ο

Since the breaker II is also in the position F, the circuit 28 with the comparator circuit 32 via the line 34 and a switch C ₁ with three positions (T, A and F) ₁ which is controlled simultaneously with the switch C _{2 and} stands in its position A, connected,

While drilling at low speed, the detector 14 will step out of the way of the comparator circuit is connected and the generator G delivers no pulse, the bore without rotating the storage basket and without the flexible line is taken away from the pulling element 12. The length of the loop 4a decreases «Hat If this length reaches a certain minimum value given by dashed lines in Pig «2, a device, not shown, which is of any known type can be (for example, an electrical contact that connects the

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Loop 4a preQt) the operation of the generator 6 from. The device according to the invention then works as before under the action of the signals from the generator G, a drainage of the line over the deflection organ 5 simulated «This results in an increase in the length of the Loop 4a up to a maximum value shown in dash-dotted lines in FIG. If the loop 4a reaches the In the latter position, an organ not shown in the figure (for example another electrical contact) interrupts the operation of the generator G »drilling continues and reduces the length of the loop 4a.

During these two episodes described, the displacement movement of the carriage 9 »is as previously indicated, with linked to the rotation of the basket 6 by any known device; the regulation of the carriage movement is initially intended as a function of the dimension of the cross-section of the flexible line *

Electrical travel limiter contacts, not shown in the figures, are actuated by the carriage; this contact © first ensure that the carriage comes to a standstill during a certain rotation of the basket, thus the first Loop of a new layer in formation is deposited in the basket above the last-mentioned loop of the lower layer. “These contacts then ensure a reversal of the direction of movement of the carriage "

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i,

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III - Special modes of operation of the device

Above were the consequences of the automatic working of the Device according to the invention described «, consequences of working by hand were provided, which enable the« operator to intervene »as soon as a An anomaly occurs, such as the deformation dee part 4b of the flexible line. The «manual mode of operation is also necessary when adding a new piece of flexible cable to the flexible, ready-to-use cable contained in the storage basket ο

For this purpose, precautions have been taken so that the pulling element and basket can be operated separately and independently. "

a - Working of the drawing organ alone

The breakers I and II are brought into position F; the changeover switches C ₁ and C _{2 are} brought to position T. In this position, the generator G is connected via line 35, changeover switch C ₁ and line 36 to the comparator circuit 32, which has the output from detector 19 on its second input Receives signals. The operator operates the generator G and the circuit 32 supplies a signal which operates the servo valve 17 and controls the operation of the motor 37 of the pulling device.

Since the circuit 30 has no signal, neither from the detector nor from the Generator G receives, the servo valve 24 prevents any operation of the motor 3 of the storage basket 6, which remains immobile.

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b - Work on the basket alone

After the breakers I and IX are brought into position F, the changeover switches Cj and C2 are brought into position P. In this position, the circuit is not applied to one of its inputs (gespeiet) and the servo valve which is not operated, preventing any operation of the drawing organ which remains immobile "The generator G is now via line 35" the commutator C _2, Line 33 and the interrupter I are connected to an input of the circuit 30, which at the same time receives the signal supplied by the circuit 28 via the line 29 ₀

The operator operates the generator G and the circuit 30 supplies a signal which the servo valve 24 actuated, which regulates the operation of the motor driving the storage basket 6 »

Patent claims:

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Claims (1)

Ape. 1224 Claims ι 1. Device for the automatic classification of by a elongated, yielding, one in one vertical Axis formed by a drive member driven storage basket element mounted turns, wherein this basket has an annulus with a bottom that is open at the top is limited to the insertion of the elongate element, this elongate element under the action of a Verechiebeorganans is set in motion, characterized in that the part of the elongate element (4) between this displacement member (12) and the storage basket (6) at least one (fraction) part of the free loop which is not exposed to tensile stress (4b) forms; and that the device in combination with pulling devices (12) for this part of the elongate element (4) forming this loop part Has guide devices (11) when the elongate element (4) is inserted into its basket (6), these guide devices being non-rotatably connected to the storage basket (6); and that Hegelader allocation devices are provided, which on the one hand the rotation this storage basket with respect to the length of the elongated element running at the outlet of this sliding element and on the other hand the length of the elongate element running at the exit from the pulling devices with respect to controls the rotation of this storage basket. 2 "Device according to claim 1, characterized in that these guide devices comprising a track for the elongate member, the track fixed to a track along a rail (10) parallel to a radius of this storage basket (6) 309826/0402 - 17 - displaceable carriage (9), the displacement environment of this carriage (9) on the guide rail (10) with the rotation of this storage basket (6) is linked. 3 * Device according to claim 2, characterized in that these control devices have: a first detector element (14) »which is a for the. length of the elongated element running through this displacement device supplies a representative signal; a second detector element (26) which supplies a signal representative of the rotation of this storage basket (6); a third detector element (21) which supplies a signal representative of the position of this carriage on its guide rail; a fourth detector element (19) which supplies a signal representative of the length of the elongate element passing through these pulling devices, an automatic device being connected to these detector elements and being designed so that it processes the signals supplied by these detectors, this device being a processed first resultant signal which is adapted to regulate the operation of the drive member driving this basket by controlling the rotation of the basket as a function of the carriage position with respect to the length of the elongated element passing through this displacement element, so that the part of the elongated element is controlled The loop formed has a substantially constant length, the device processing a second resultant signal which is such that it regulates the operation of this pulling device in relation to the length of the elongate element running in this pulling device the 309828/0402. je_ Rotation of this storage basket taking into account the position of this carriage on its guide rail regulated or assigned to it, in such a way that the length of the elongate element between them Pulling devices and this basket is essentially constant. 4. Apparatus according to claim 3, characterized in that the basket and pulling devices operated by hydraulic motors controlled by servo valves, the servo valves being operated by the resulting signals supplied by the automatic device can be controlled. 5. Apparatus according to claim 3, characterized in that this automatic device consists of a correction circuit which receives the signal at an input terminal which is representative of the rotation of this basket and from this second detector element is supplied and at a second input that for the position of this carriage receives representative signal supplied by the third detector element, this correction circuit provides at its output terminal a corrected signal representative of the length of the loop of the elongate element deposited in the basket; that a first comparator circuit is provided with a first input terminal which is connected to the corrector circuit of which it corrected it Receives signal and connected to a second input terminal with a first two-position switch is, which in a first position exclusively the second input terminal of this comparator circuit with the erdbea Detektcrolanent connects, from which he does the for the 309826/0402 _i9 , Length of the elongated at the exit from these pullers current element receives representative signal, the comparator circuit at its Output terminal a control signal for the drive element of this basket, which is sent to a control element for the This drive organ is transmitted puncture-wise, delivered Device according to claim 5, characterized by a generator for signals identical to those supplied by the first detector element the second input terminal of this first Comparator circuit is connected to this generator via this first switch when this is in his second position, this generator is actuated when this through the elongate element between this sliding element and this basket formed (fragile) part the loop has reached a minimum certain length while decreasing, with the operation of the generator is interrupted when this (fraction) part of the loop has reached a maximum predetermined length « 7ο device according to one of claims 5 or 6, characterized by a second Koraparatorkreis with two input terminals, one of which the first connected to the fourth detector element which is a signal representative of the length of the elongate passing through these pulling devices Element and whose second terminal is connected to the output terminal of this correction circuit, the second comparator circuit delivering a signal at its output terminal indicating a puncture of the signals applied to its input terminals, where 309826/0402 ■ - 20 - this signal controls the operation of these pulling devices via an element zur Rege.lung the functioning of these pulling devices, to which this output signal is transmitted _r Device according to claim 7, characterized in that g e k e η η, that the second input terminal of this second comparator with the output terminal of this Corrector circuit is connected via a second commutator with two positions, which is synchronous with this first two-position commutator, which is in its first position, is operated; and that third and fourth synchronously controlled changeover switch with three positions are provided, the third changeover switch this generator with the first changeover switch exclusively connects in a first and a second of its three positions and this connection in the third position interrupts, the fourth changeover switch this second input terminal of the second comparator circuit with the generator in its third position and with this output terminal of this corrector circuit connects in its second position, the third and fourth changeover switches in this way being independent Actuation of the basket and the pulling device permitted if these are respectively in their first and third position and if this generator is operated at the same time " 309826/0402