The subject of this invention is a drillstem activat ing apparatus, especially for the execution of continuous ly operational deepdrilling, with which the penetration into the solid mass of the Earth for the purpose of mining and study of the Earth's core, significantly at the search, discovery and production (mining) of liquid and gaseous fuels, considerably faster output can be achieved against presently known drilling methods.

The known drilling apparatus - i. e. rotary drilling - generally operate in such manner, that the drillpipe column - the drillstem - which is held together by drillpipe connectors and rotated axially, is fitted at its bottom end with wing-, roller-r, or diamond driilhead, at its upper end with high pressure flushing fluid to be introduced, which flushing fluid - via the driilhead - pressed into the well and will raise onto the surface the rubble produced by the drilling. The elevation and suspension of the drillstem is manipulated by the lifting hook, placed in the crown section of the drilling tower. The rotation of the drillstem is operated by the turntable with the aid of a four or six sided sectional rotating rod, screwed into the upper pipe of the drillstem.

With this kind of solution to the drilling, after every single drillpipe feed - such as wetten the drillste is sunk into the well by one pipelength - the drilling

has to stop, the rotary rod must be unconnected, the flushing fluid to be removed, then after the introduction of a new drill pipe the rotary rod to be screwed back and flushing fluid to be reintroducec-. This workrate will then produce an extraordinary time consuming drilling operation, partly to be phased, in other words the above listed steps (stages) of operations and because of its idle run during stoppage.

There are such known drilling apparatus too, where by the elimination of the drilling rod the drilling operation is made to be speedier. These apparatus contain drillchuck type clamping for the clamping of the drillste at these solutions too the mode of drilling is phased, since the clamping mechanism is to travel up and down, hence the upward travel is the idle run. Here too the drilling has to stop while the new (next) pipe is clamped on. These apparatus are unsuitable for high powered trans mission because of its short area clamping mechanism - because of their structural built - suiable those clamping of only lesser sized and weighed drillstems and smaller, sometimes to a depth of only 10 m are useab

The "R0TARY-S ^; .IVELHEAD" type solution too is known from the technical state of professional literature, which renders unnecessary the use of the drilling rod and thus the rotation of the drillstem is achieved by, apart from the use of suspended εrw ^' ivelhead in the tower, with the aid of a hydro otor. This solution too will

only partly eliminate the phased operation, since the boring of the hole (well) will stay phased while during the feed-in of the next pipe drilling has to stop. Fundamental handycap to this solution as well, that because of its structural fashion, is> only usable for lesser depth of drillings.

In cases of great depths of drillings, considerably will appear the disadvantages of the increased idle- run with the fault-appearance of the driilhead, such as wear or breakage at such depth, when for the change of driilhead the total length of drillstem have to be taken out (raised to the surface) component by component.

It is well known that while drilling at several kilometers deep hole and with extremely hard layers in adverse conditions, perhaps 200-300 times can be made necessary the change of the driilhead, the dismantling and rebuilding of the drillstem.

For the reduction of time necessary for the driilhea change the N^ 3 724 567 U, S. patented solution has been worked out, by which the driilhead can be raised without desmantling the drillstem - like a pipesnake - layed out and moving on such an arc shaped railstructure by a trolley train, which is situated next to the drilling tower and by the side of and above is this pipesnake guide structure mounting. The running of the drillstem at this solution too is executed by a rotory rod passed thorough the turntable for its raising with use of

such chain structure placed at the base of the drilling tower,- which is lug-type and thus-by moving in under the pipeconnec.tors - can raise or lower the drillpipe. Although this chainstructure does play a part in the reduction of the time used for the driilhead change, but does not maintain a hold on the mantle of the drillpipe, , thus it can not rotate or run the pipe, hence during the drilling operation is not in use. Without exemption the use of drilling towers are a necessity at all types of drilling apparatus, where drilling towers are to hold the weighty drill stem at a considerable height. The drilling tower in itself is a source of great danger, since its point of gravity is at a high point of application is near to the lifting hook and atoff-shore drillings with gale force winds can topple over.

With the offered invention the short cominαs of the known drilling apparatus can be eliminated, or rathe with the elimination of the drilling tower, considerable reduction of time lost with stoppages, in practice, drillings can be continuous.

The perception basis of this invention is, that stoppages originating and given by the the phased mode of operations can be eliminated and the employment of the drilling tower can be made obsolete, if we can ensure such a clamping mechanism, which with suchcontact on the outer mantle of the spherical pipe at the mouth of the well can rotate and raise-lower that drillstem

simultaneously.

On the basis of our perception we can achieve the continuously operational drilling with such an apparatus, which consists a turntable for the axial rotation of the drillstem, transmitting the flushing fluid. To the rotary tabletop of the turntable a drillstem motioning (driving) apparatus is fixed which with frictional force clamping rotates in unison, where in between its static and rotary table a forcetransmitting mechanism is placed. The drillstem motioning apparatus advantageous in consisting of two "INFINITIVE" chain echanisms, chain- stretch and hold hausings, to those fixed two pairs of chainwheels, anti-directional rotary mechanical force- transmitting system comparative against each to the chainstructure and a hydraulic force transmission system moving the individual linkcomponents of the chain in a horizontal direction.

The mechanical forcetransmitting system may consist the followings: chain activating frontal cogwheels direct ly in constraint thorough rotation direction switching cogwheels connected to the force transmission mechanism situates in between the static and rotary turnable, the hydraulic force transmission system may then consist, an oil area arranged in the mountings of the chainstructu and joined to the radial (tubular) oil area formed inside the rotary table, thorough the gasket reaching in and the piston arrangements under, as well as the tensioning

pistons arranged at the back of those other pistons mentioned prior.

The clamphold of the drillstem by the usefulness of the frictional force and possible moving of perhaps several thousands of tons, - raising or lowering can be achieved with such a ^clamping device, which is connect to the chainstructures. To each of the links of the chain mechanism a pressing bar is fixed, one to each and every one of these bars are given two each of clamping chucks, holding hingejoined segments.

^' The movements of the rotary turntable can be achieved advantageously with such a forcetransmitting mechanism, which may consist cogged rings fixed concentrically to the rotary tabletop, forced jointed to the bevelgears, wedged on to the table turning axle. At the same time this forcetransmitting mechanism carry out the driving of the chain with such a system, which consists cogged rings with bearings into the tabletop and forcejointed with the bevel gears and wedged on to the chaindriving axle.

The invention is described more in detail on the basis of drawings. The drawing of which with correspond¬ ing reference numbers show corresponding details, accordingly of the invention's drilling apparatus, a possible example of a form of construction is shown. On the drawing Fig. 1 is the drillstem apparatus and the force trans-

mission mechanism's side elevation, sectionally in part, the Fig. 2 shows the top elevation of the apparatus from Fig. 1, Fig. 3 shows the A - B section of Fig. 1,

Fig. 4 shows the detail of Fig. 3 in underside elβation Fig. _. 5 shows the C - D section of the Fig. 4 detail Fig. 6 shows the E - F section of the Fig, 1 apparatus and Fig. 7 shows the G - H section of the Fig. 6 detail.

As seen on Fig. 1 the 2 force transmitting mechanis is situated in between the 3 rotary table and 4 static table and on its bearing 24 the bevel gear holding 10 pipe axle 51 is extended over. On the pipe axle 51 and in conjunction with, common axle bearing 25 is driven thorough the bevel geared 8 table rotating axle 7 too. The bevel'gear 8 is forcejoined to the cogged ring which is fixed to the rotary table 3. The rotary table 3 is turning (Pivoting) on the self aligning conic rolle bearings 6 and on the self aligning conic roller thrust bearing 5 fixed into the static table 4. Into the tableto 3 in the section between the thrust bearings 5 and the bearings 6, tubular shaped oilchannel 49 is inserted (sunk in), on both side of which are the oil leakage preventer ^' ring shaped stuffing boxes 44a, 44b. Into the oil channel 49 situated and formed on the tabletop 4 via the connector 43 and driven thorough it an oil channel

45b from inder, arrives the oil, which from there a connector 48 shaped into the end of the oil channel, situated 45a on the rotary table 3 arrives into the oil area of the drillstem activating apparatus furnished with an airdum 46. The bevel gear 10 is inforce jointing with the cogged ring 13 which is swivelfixed into the rotary tabletop 3.

Under the inner shoulder of the cogged ring 13 is a thrust bearing 12, above the shoulder is a thrustbear- ing 11 hence the cogged ring 13 runs in between the two thrust bearings. The cogged wheel 15b forcejoined to the cogged ring 13 which is fixed on to the halfaxle 14b together with the frontal cogwheel also on the halfaxle 16b rotate clock wise the frontal cogwheel 17a fixed on to the chaindrive axle 21b and with it the chain wheels 22a, 22b at the same time the frontal cogwheel 16b rotate anti clockwise via the rotation direction snitching ISa, the frontal cogwheel, fixed on to the chaindrive axle 21a and with it the chain wheel 22c. The "INFINITIVE" chain structures 19a, 19b are held in a vertically stretched out position by the chainhold housings 35a ,35b. Also in vertical positions are the chain stretching tracks 4la, 4lb which are able to move, with the pressure piston 42a, 42b operated and the one above another arranged nine and nine pieces of track elements 34 the individual chain links 27 and the fixed on chain members 26 in a horizontal direction and to

press them against the wall of the drillstem 1. Arranged inside the axle of the rotary tabletop 3 is a holding wedge 47 ensuring the secure hold of the drillstem 1, which only to be used when danger may occur. It can be observed on Fig. 2, that the chain structures are positioned in between the cogwheel system which is made up from bevel gear 15b, rotation direction switch cogwheel 18a and the frontal cogw.heels 16b, 17a and 17b, and the parallel cogwheel system which is made up again from bevel gear 15a, rotation direction switch cogwheel 18b and frontal cogwheels 16a, 17c and I7d. •

The pipe axle 51 driven bevel gears 15a or 15b respectively surrounding the axle 7 are positioned on the half axles 14a, 14b in between the bearings 52a and 23a or 52b and 23b respectively and on both sidesare forcejoined to the cogged ring 13 thorough the openings c on the rotary tabletop 3.

Linked on to the connector 48 are the pressure pipes 50a, 50b, 50c.. and 50d, which will channel the oil into the closed oil areas fitted with air drums 46 and surrounded by the chain structures 19a, 19b charging into this oil areas are the twice nine pieces of pistons 42a, 42b.

The build up of the pipe holding mechanism of the drillstem activating apparatus can be observed on Fig.3,

4 and 5. The segments 33 in contact with the drillstem 1 adjusting to the pipediameters and to the pipejoints also

are fixed on -to the clamping chucks 32, which are hinge-held by the pressure bars 30 via the tensioning members 31a, 3lb. The pressure bars 30 are fixed on to the chain links 27 carried by the chain pins 28 of the chain rollers 29.

The hydraulic structure activating the pipe clamp mechanism can be observed on Fig. 6, 7. In the course of their vertical travel, the chain rollers 29 are, sliding over thoroughout on track elements 34. These track elements 34 are fixed to pistons 40, which pistons are arranged into boreholes of the cahinhold housings • 35a, bordering the oil areas 39. On to those ends of the pistons 40 which are in the oil area 39 buffer plates 38 are fixed. For the prevention of oil possibly leaving the oil area 39, around the pistons 40 gasket elements (packings) 37 are held down securely with stuffing box lids 36.

The execution of continuous drilling by the drillstem motion apparatus operates accordingly as below; The table rotating axle 7 of the power transmission apparatus 2, connecting onto in its own recognition to an outside power source around a vertical axis to the bevel gear 8, rotate the rotary tabletop 3 and with it simultaneously, the chain structures 19a, 19b. Meanwhile, thorough the connenctor 43 we let the high pressure oil into the tubular shaped oil channel 49, from where the oi will arrive thorough pressure pipes 50a, 50b, 50c and 50d

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as seen on Fig. 2 - into the high pressure oil area as shown on Fig. 6 and Fig. 7.

Likewise, as can be observed on Fig. 6 and Fig. 7, resulting from the oilpressure, the pistons 40 will move in a horizontal direction, moving also the chain members 26 fixed to, the chainlinks 27 of the chain structures 19a, 19b, which, in this way, will press the segments 33 against the mantle of the drillstem 1 as seen on Fig 3 The tensioning pistons 42a, 42b situated on the opposite side of the oil area's 39 piston side 40, ensure the constant tension (rigidπess) of the chain structures 19a, 19b.

Hinge - contacting each other, the clamping chucks 32 and with them the segments 33 too, are able to adjust to the various diameters of the drillstem 1 - thin or large pipes, pipejoints - and with the selection of an appropriate size of the numbers of chain errbers 26, are suitable to excert extraordinary power output, are able to hold and move the several hundred tons of the drillste weight.

For the vertical moving of the drillstem 1 the c Im ing chuck 32 - which are pressed against the wall of the drillstem - holding "INFINITIVE" 19a, 19b chain structure are required to be moved to opposite directions to each other. This movement is ensured by the outside power sour connected on to the pipe axle 51 and transmitted via the bevel gear 10. The bevel gear 10 can move sideways (turn

12 -

aside) the cogged ring 13, in comparison to the rotary tabletop, hence the cogged ring 13 either runs ahead in the rotary tabletop 3 or lags behind. The bevel gear 15b in contact with the cogged ring 13 and sharing a common axle with the frontal cogwheel 16b, will rotate the chainstructure on the left 19b to a clockwise direction, while with the use of the rotation direction switch gear 18a will move the right hand chainstructure 19a in anti-clokcwise direction. Meanwhile the drillstem 1 in between the chainstructures (or chain mechanism) progresses forward. In such case where the aim is the raising of the drillstem 1 - i. e. in case of drillbit change - then understandably, the chainstructures too 19a, 19b has to be rotated in a reverse direction (in reverse order).

The frictional force acting upon in between the drillstem 1 borne from the hydraulic pressure and the mantle of the drillstem, as well the segments, of all those multiplied result of their frictional coefficients, In the highpressure oil area 39 the rapid change in the oil pressure, together with the possible slipping of the drillstem 1 is eliminated by the puffed airdru s 46 . - Accumulation tank.

Si ilary, safety aims are served by the in itself known holding wedge 47 too.

Accordingly, by the invention of the drillstem motion apparatus, eliminating the construction and

employment of the drilling tower, thus with lesser costs continuous drillings for geophysical exploration, can be effected.

The advantages given by the use of the apparatus - or rather to satisfy the demand of the employees of geophysical explorations with much improved advantages for a satisfactory elimination of danger.