WO2013060472A2

WO2013060472A2 - Method and device for connecting a new pipe to a counter piece of a natural gas or crude oil source which has been damaged in a deep-sea area

Info

Publication number: WO2013060472A2
Application number: PCT/EP2012/004499
Authority: WO
Inventors: Wolfgang SCHLAPPIG
Original assignee: Schlappig Wolfgang
Priority date: 2011-10-26
Filing date: 2012-10-26
Publication date: 2013-05-02
Also published as: WO2013060472A3; DE102011116953A1; DE102011116953B4

Abstract

The invention relates to a method and a device for connecting a new pipe (1, 2) to a counter piece (5, 6, 8, 8A) of a natural gas or crude oil source which has been damaged in a deep-sea area. The method is characterized in that the new pipe (1, 2) is connected to the counter piece (5, 6, 8, 8A) by means of a screw device (3, 3A, 4, 7, 9), which is arranged on the source-side end of the pipe and which is designed as a thread-cutting device, while simultaneously cutting a connection thread on the counter piece (5, 6, 8, 8A) and remains connected to the counter piece (5, 6, 8, 8A) in said position. The device is characterized in that the new pipe (1, 2) is connected to the counter piece (5, 6, 8, 8A) by means of a screw device (3, 3A, 4, 7, 9), which is arranged on the source-side end of the pipe and which is designed as a thread-cutting device, and remains connected to the counter piece. The counter piece (5, 6, 8, 8A) connected to the screw device (3, 3A, 4, 7, 9) has a Whitworth pipe thread which is cut by the screw device (3, 3A, 4, 7, 9).

Description

Method and device for connecting a new pipe to a counterpart of a natural gas or oil well damaged in the deep sea

description

Field of the invention

The invention relates to a method for connecting a new pipe to a counterpart of a damaged in the deep sea gas or oil well.

The invention further relates to a method for coupling delivery pipes in the deep sea via a connecting thread.

The invention further relates to a device for connecting a new pipe to a counterpart of a damaged in the deep sea gas or oil well.

State of the art

There are relatively high risks for natural gas and especially oil production in the deep sea. In the case of damaged natural gas and oil wells, there is a danger of a "blowout", that is, an uncontrolled escape of oil or natural gas, in particular the oil can cause considerable ecological damage.

From AT 343 576 B a deep drilling tool with a drill head with at least one bolted cutting plate is known.

The disadvantage here is that the deep drilling tool is not suitable to replace damaged pipes with new pipes and to stop uncontrolled outflow.

1

CONFIRMATION COPY task

It is the object of the present invention to provide methods and apparatus for connecting new pipes to counterparts of damaged gas and oil wells in order to stop an uncontrolled outflow.

Presentation of the invention

The object with respect to the method is achieved in conjunction with the features of the preamble of claim 1, characterized in that the new pipe is connected by a screwing device arranged at its source end and designed as a thread cutting device while cutting a connecting thread on the counterpart with the counterpart and in this Position with the

Counterpart remains connected.

The arrangement of a screw device, which is designed as a thread cutting device, a secure connection with the counterpart is achieved. The

Thread cutting device remains as a connecting element on the counterpart. This does not require a difficult and separate bolting operation. New pipes can thus be relatively easily and safely connected to counterparts of damaged gas and oil wells and an uncontrolled outflow can be stopped. The particular advantage is that funding can be resumed.

Preferred embodiments are subject of the dependent claims.

According to a preferred embodiment of the invention, the screwing device towards the counterpart on a prefabricated, conically shaped thread, wherein the connecting thread is cut cylindrically on the counterpart. As a result, a relatively safe and secure connection can be achieved.

According to another preferred embodiment of the invention, the

Screwing the counterpart towards a plurality of circumferentially distributed Vorschneidklingen of carbide inserts on which the remaining shreds or discontinuities are cut away. The screwing has towards the counterpart a plurality distributed around the circumference and in depth

successively staggered, determining the pitch of the connecting thread

Tapping plates with adjacent Spanabführungsdurchbrüchen on with which the connecting thread by turning the new tube with one of

Thread pitch following propulsion is cut.

According to another preferred embodiment of the invention, the new pipe is a production pipe and the counterpart is a delivery pipe stump or a flange or flange and / or a preventer and / or that the new pipe is a drill pipe and the counterpart is a drill pipe stub.

According to another preferred embodiment of the invention is the

Screwing designed as a welded to the lower end of the new tube screwing. The screwing device has a

External thread with the tapping plates and the chip removal openings adjacent to the tapping plates. To connect with the as

Conveyor stub or Bohrgestängerohrstumpf trained internal thread is cut into the counterpart and / or the screw is formed as a welded to the lower end of the new tube over-screw device and has an internal thread with the tapping plates and with the tapping plates adjacent Spanabführungsdurchbrüchen on. For connection to the formed as a flange or as a flange and / or as Preventer counterpart an external thread is cut on the counterpart. According to a further preferred embodiment of the invention is in the

Counterpart a Whitworth pipe thread cut. Through the pipe thread a particularly tight connection is achieved.

The object with respect to the method is further achieved in conjunction with the features of the preamble of claim 7, characterized in that the upper conveyor tube is screwed via a conical pipe thread with the lower conveyor tube, wherein between each end face and an adjacent stop surface remains a gap and an am Upper conveyor tube arranged threaded ring with one opposite the conical Pipe thread feinengängeren cylindrical thread is struck by counter-rotation on a stop surface of the lower conveyor tube.

This ensures that the entire existing from the upper and lower conveyor pipe delivery pipe can be turned out in the deep sea for retrieval, without the entire conveyor tube is rotated by turning left halfway unintentionally apart. By turning the threaded ring upwards, for example, with an extra lever provided, the large-scale conical pipe thread is relaxed and the upper and lower conveyor pipe can be separated. The different thread pitches of conical pipe thread and the cylindrical thread of the threaded ring prevent unwanted uncoupling.

The object with respect to the device is achieved in conjunction with the features of the preamble of claim 8, characterized in that the new tube is connected by a arranged at its source-side end and designed as a thread cutting device screwing with the counterpart and remains connected.

Thread cutting device remains as a connecting element on the counterpart. This does not require a difficult and separate bolting operation. New pipes can thus be relatively easily and safely connected to counterparts of damaged gas and oil wells and an uncontrolled outflow can be stopped. According to a preferred embodiment of the invention, the screwing device towards the counterpart on a prefabricated, conical thread and the connecting thread on the counterpart is cut cylindrically.

Due to the slightly conical thread cutting on the

supported cylindrical connection thread.

According to a further preferred embodiment of the invention, the

Screwing the counterpart a plurality distributed around the circumference

Pre-cutting blades made of carbide inserts, with which remaining shreds or discontinuities are wegschneidbar, and assigns the screwing to

Counterpart towards a plurality distributed around the circumference and successively staggered in depth, the slope of the connecting thread defining thread cutting plates made of carbide with adjacent Spanabführungsdurchbrüchen on.

The formation of carbide inserts, such as solid carbide (VHM), is preferred. Basically, however, is the use of others

High-performance steels or high-performance materials of high strength and service life possible. The inserts can also be designed as indexable inserts.

The Chipabführungsdurchbrüche chips are dissipated and jamming of the threads is reliably avoided.

According to another preferred embodiment of the invention, the new pipe is a production pipe and the counterpart is a delivery pipe stub or a flange or a flange and / or a preventer, and / or the new pipe is a drill pipe and the counterpart is a drill pipe stump.

Thus, the device is versatile.

According to another preferred embodiment of the invention is the

Screwing designed as a screwed to the lower end of the new tube screwing, wherein the screwing an external thread with the tapping plates and with the tapping plates adjacent Spanabführungsdurchbrüchen, and / or wherein the screw is formed as a welded to the lower end of the new tube Überschraubvorrichtung and an internal thread with the tapping plates and with the

Tapping has adjacent Spanabführungsdurchbrüchen. According to another preferred embodiment of the invention, the

Screwing device on a Whitworth pipe thread. According to a further preferred embodiment of the invention, the counterpart connected to the screwing device has one of the screwing device

cut Whitworth pipe thread. In principle, the screwing device and thus also the counterpart may also have another suitable thread.

Further features and advantages of the invention will become apparent from the following specific description and the drawings.

Brief description of the drawings

FIG. 1 shows a side view in section of a device for connecting a new delivery pipe to a delivery pipe stump

Counterpart and for connecting a new drill pipe to a designed as a Bohrgestängerohrstumpf counterpart, Figure 2 is a side view in section and elevation in an enlarged view of

Screwing device of Fig. 1 with Bohrgestängerohrstumpfe as a counterpart,

Figure 3: a side view in section and elevation of a coupling point

between an upper conveyor pipe and a lower conveyor pipe,

3 shows a side view in section and elevation of the coupling point of FIG. 3 in an enlarged view, FIG. 4 shows a side view in section of a device for connecting a new conveying tube to a counterpart designed as a flange, a side view in section and outbreak of a new one

Bohrgestängerohres with welded screwing, which is designed as a Überschraubvorrichtung, a bottom view under the Überschraubvorrichtung of Fig. 5, a side view in section of a device for connecting a new conveyor pipe formed as a flange and Preventer

Counterparts and for connecting a new Bohrgestängerohres trained as Bohrgestängerohrstumpf counterpart each with trained as Überschraubvorrichtungen counterparts, a side view in section and elevation in an enlarged view of the connected to the new guide tube over-screw in conjunction with the trained as a flange and Preventer

Gegenstücke von Fig. 6 ,, a side view in section and elevation in an enlarged view of the receiving recess with cutting plate, platelets and

7, a side view in section and elevation in an enlarged view of the receiving recess with cutting plate and pressure plate and dashed lines indicated Spanabführdurchbruch and a

Pre-cutting blade of Figure 7, a plan view in section and elevation on the receiving recess with cutting plate, pressure plates and adjacent Spanabführdurchbruch of Fig. 8a, a plan view in an enlarged view of a development of the internal thread of the cap formed over-screw device of Fig. 5, FIG. 10 a: a side view in section and elevation of a hydraulically operated flat slide,

FIG. 10b: a top view in section on the flat slide of FIG. 10a,

FIG. 10c: a side view in section and elevation of the flat slide of FIG.

10b and

Figure 11: a side view in section of the device for connecting the new

Conveyor tube formed on the flange of a preventer

Counterpart of Fig.4.

DESCRIPTION OF PREFERRED EMBODIMENTS The inventions are methods, shut-off devices of FIGS. 1, 4 and 6 on a damaged natural gas production stump 5, flange 8, preventer 8A and a drill pipe stump 6, which can only be made by means of new conveyor pipes 1 and / or new drill pipes 2, 2A are to be executed. All variants of the methods and devices are based on that new threads as solid compound 3 and 5, 3A and 6, 7 and 8, 4 and 6, and 9,8 and 8A in or on the damaged, suitable but damaged and / or non-round Damage damage 25 or connection options are cut and fixed in one operation, while simultaneously removing removal of disruptive shreds and roundness caused by the damage damage 25. The shreds are the remnant of the shattered by accident, kinked and later sawn into each other stuck delivery and Bohrungskängerehre 5, 6. On the flange 8 and Preventergehäuse 8A roundness are only suspected by rough, previously caused casting. As a preventive measure, a Preventerkopf can be provided in the new production with an empty fishing thread to unscrew there in case of damage. To be a clean

To ensure thread cutting, all disruptive metal residues and irregularities must be peeled off in advance with a revolution of 2.3 mm feed. The peeler consists of five or more carbide (HM) cutting plates 9K and 10K evenly distributed around the circumference so that the chip removal of an HM Cutting insert is one turn and one subsequent tapping operation with a pitch of 2.3 mm (equivalent to 1 to 1 inch). Since five or ten carbide inserts cut at the same time, this results in the required

Feed of 0.46 mm chip thickness x 5 equal to 2.3 mm or 0.23 mm x 10 equal to 2.3 mm for the following thread to be cut. With 0.46 mm or 0.23 mm chip thickness, the carbide inserts are not overloaded. The thread to be cut is made by means of angled solid carbide (VHM) Whitworth thread full profile inserts "6B, 9B and 10B, which increase to the finished thread diameter (91 in zone 9D) and in the recesses 6A, 9A and 10A with bevels, by beveled platens 9J The resulting chips are removed by chip removal apertures 6C, 9C, and 10C, and the cranking phase (FIG. 9H in zone 9D) is the thread crest height of the prefabricated rotated conical thread taper slopes 9H and 9D within the gating zone 9D of the devices 9D lies slightly, at least 0.12 mm, over the tightening phase 9H of the device during the cutting of the cylindrical thread on or into the connection possibilities, of the five variants, thereby preventing the part to be cut, in the cutting zone still inclined, conical and later cylindrical thread with the prefabricated twisted conical thread of the device can eat. The cutting edges of the inserts "6B, 9B and 10B would not be used because they are below the level of the conical thread crest." The pre-formed turned conical thread would only depress and prevent the entire cutting process, the entire action would be wasted, would be destroyed ,

Only at the end of the cutting zone 9D, at the beginning of zone 9E, does the new cylindrical thread change to the zero line (0) and then rotate into or onto the prefabricated turned conical threaded section zone 9E to a crimping 9G so far End or it does not turn on before, because it - as intended - stuck, so enters a firm connection. The finished "VHM Whitworth solid profile indexable inserts" (or inserts) must be ground on the comb to the required height 91 and bevel cut angle within the 9D cutting zone 6B, 9B and 10B may be set to have a small allowance over the crest diameter of the thread being cut, and the small taper of the tapered thread 9G in zone 9E can be made small hardly represent graphically, since it moves at such large diameters 9G only between 200-400 pm. The representation of the arrangement of the "HM cutting plates" to a peeler 9K and 10K and the "VHM Whitworth thread full profile

Cutting inserts "to a thread cutting system 8, 8A and 9 to 9K and 10A to 10K is difficult with normal technical drawing.That is why in Figure 9 is a schematic representation of the unrolled internal thread of the cap 4 with all

1: 5 scale inserts selected. The "HM indexable inserts" and the "Whitworth threaded solid profile indexable inserts" are indirectly fastened with pressure pads 9J and 10J in order to be able to apply pressure laterally by means of screws and thus press them down by the one-sided bevel on the opposite side 6A and 9J. This is illustrated in three in the figures 8a, 8b and 8c in the scale 1: 1.

The "fine thread" to be cut is designated so only because it has a pitch of 2.3 mm, relative to the diameter (508 mm corresponding to 20 inches) and 5 or 1150 mm diameter to 2.3 mm pitch 9, 8 and 8A, or 620 mm diameter to 2.3 mm incline 7 and 8 or 360 mm diameter to 2.3 mm incline 3A and 6 appears as "fine". But if you choose an even lower thread pitch, that would be too fine. But if you choose an even larger thread pitch, this is at the expense of the remaining pipe wall thickness in the threaded area, which is then too weak. However, many small threads carry the same amount of tensile load on their flanks as large ones

Threads, but have the same torque higher tightening force. Large tapping depths also produce unnecessarily many, possibly annoying chips during their production. Pressing cylindrical thread, turned on or screwed into slightly conical prefabricated turned counter thread not only presses better tight, it also seals, so that the screw connection is not leaking.

In order to stop the entry of natural gas or oil in the new delivery pipe, and a hydraulically operated flat slide 11 and 12 with a flow opening 14 at the lower end in the new delivery pipe 1 of two halves 11 and 12 and a

slidable internal flat slide 13 welded together, are welded between the tubes. The flow opening 14 in the flat slide 13 is useful if you want to salvage through the flat slide through a ruptured drill pipe 3A and 6 or 4 and 6 or drill deeper in the deposit further. The flat slide 13 should have on the end faces of such a cross-sectional area 15, above the flow opening 14, for example, 51 cm diameter to 40x60 cm End face cross-section 15 corresponding to 2042 cm ^{2 of} the flow opening 14 against 2400 cm ^{2 of} the end face 15. The flat slide 13 can be moved by pressure on the end faces back and forth and open or close. The pressure can be through

High-pressure gear pumps, which are screwed into the hydraulic openings 15 A, and driven by deep-sea robot generated. Or one uses high-pressure bottles with 400 bar of liquid nitrogen as the drive with (compressed air) quick couplings and control valves on the housing on the slide comes into effect. But the existing source pressure can also be used for movements through installed pipes and valves controlled by robots. But if someday the source does not have any more of its own pressure, it will not work anymore. If you want to perform the process of closing or the connection creation, the delivery pipe with its device is normally pushed away by the surge of oil and the 1600 m long, heavy-duty conveyor pipe is also not easy to direct. However, to ensure this, it is advisable to use a shared auxiliary device 17. It can be screwed on the delivery tube comprehensively. By means of several strong guide arms, it attaches to the contact surfaces on the flange 8 and Preventer 8A, thus leading the device safely for pre-peeling and threading. The guide arms are chamfered towards the direction of rotation (see section) so that they do not get caught on the flange 8 and Preventer 8A. For the connecting bodies of FIGS. 1, 4, 5, 6 and 7, a centering phase 7F and 9F assumes the same function. By selectively placing the "VHM Whitworth thread full profile (cutting) cutting plates" around the circumference at the delivery pipe 3 or the sleeve-like device 7 or the bell-like device 9 and 10A to 10J no gas or oil exits into the seawater, although the Chips are discharged to the outside or inside

Spanabführungsdurchbrüche are sealed against each other by the threads and weaken the devices only selectively so that they through the

Bearing pressure can not burst. The devices are not only suitable for closing, but also for conveying. By pumping, the pressure in the production pipe drops and it is not so fast to natural gas or petroleum leaks from the seabed. If you have to recover a drill string, then only when you have made a delivery pipe connection. The drill pipe can then be pulled in the outflow-preventing conveyor pipe. It is also conceivable that in a new spill-resistant production tubing, with cutterhead tools mounted on a new drill string, and suitable for steel and sludge concrete, the In the old conveyor pipe cast-in drill pipe cut out until oil or natural gas comes again. Then you would be able to pull in a next step, the damaged residual drill pipe and can also continue the drilling with a new drill pipe into the deposit and deepen.

The drill pipe 6 must not be connected to the conveyor pipe 5. Except for the auxiliary device, all devices should be made of seawater-resistant material with high tensile strength and according to the instructions of the API. For indoor or outdoor connection or closure of a damaged in the deep sea

Natural gas or petroleum source is using a new conveyor pipe 1 and / or, a new drill string 2 by a screw-3 and 3A or

Overrunning devices 7, 4 and 9, which are provided with a prefabricated turned crimped, slightly tapered relative "fine thread" 9E and 9G (2.3 mm pitch at 508 mm corresponding to 20 inch diameter) a new stable connection in the old part damaged non-round pipe socket of the old one

Conveying tube 5 or in the old partially damaged non-circular drill pipe 6 or over the web on the flange 8 on the preventer 7 or over the flange 8 and a part of the preventer 8A and 9 or on the sawn, partially damaged non-circular

Drill pipe 4 and 6 at the same time as the lead following propulsion with circumferentially spaced roughing blades made of "HM indexable inserts" 9K and 10K, which cut away the remaining shreds 25, following with the successively staggered depths distributed around the circumference, the slope

6B, 9B and 10B with chip removal apertures 6C, 9C and 10C and a cut zone 9D cut a new cylindrical connection thread and in this position with the old pipes 5 and 6 and over the web at the flange 7 and 8, respectively or remains connected via the flange and preventer 9, 8 and 8A or above the drill pipe 4, thus closing the natural gas source 1, 3 and 5, (2, 3A and 6), (1, 7 and 8), ( 1, 9, 8 and 8A), (2A, 4 and 6), the gas or oil production resumes, or later following the defective drill pipe pulls out and then with an intact new linkage through the newly set delivery pipe the recess in the Natural gas or crude oil deposit continues. A closure or a connection device for a damaged in the deep sea Erdgasbzw. Petroleum pipe at Preventer is formed by one in a new

Conveyor tube welded tapered pipe socket with prefabricated turned slightly tapered "fine thread" and a 9D incision zone increasing with "solid carbide

Whitworth threaded full profile interchangeable cutting plates "6B, 9B and 10B distributed around the circumference, staggered in depth following the prefabricated twisted slightly tapered thread, a counter thread cut into the remaining old damaged round 25 conveying pipe or the preventer at one go and the at the

Tapping resulting chips by means of apertures 6C, 9C and 10C to dissipate inside, with a neck of the front with "HM inserts" on the front circumference forms a precutter 9K and 10K, which cuts away the disturbing, resulting from the accident residual pipe and metal scraps and 25 roundings which, however, has a centering so closely to the center that he has a later mountain of the

Drill pipe 6 or a later drilling in the natural gas or Erdöllagerstätte not or prevented.

A connection device for a damaged non-circular drill pipe 6 which is broken down in the deep sea in a natural gas well or the Preventer 8A by accident, is formed by the fact that at the lower end of a new intact Bohrgestängerohres 2 and 3A clamped with Vorschälschneiden 9K "HM cutting plates" for turning out the interfering remaining pipe or metal chips 25 with a following rising thread cutting phase 91 with clamped "VHM

Whitworth threaded solid profile inserts "6B, 9B and 10B and

Chip removal openings 6C, 9C and 10C are provided to the center, cuts a cylindrical thread in the pipe stub and on a prefabricated twisted slightly conical mating thread (zone 9E) on a search plug with guide tip 3A, which is welded to the new drill pipe, passes and so long with the cylindrical new thread further on the slightly conical counter-thread to a pressure turns up, for example, the old damaged drill pipe rotates and is screwed so tightly so that it can be recovered.

A connection device for a deep-sea in a natural gas or

Petroleum well drilling or the Preventer 8A plugged, damaged by accident, damaged, non-circular drill pipe or Bohrstängerohrstutzen 6, is characterized formed at the lower end of a new, intact drill pipe 2A and 4 is a welded cap 4 or sleeve with feed or centering 7F and 9F, following with circumferentially distributed Vorschälschneiden 9K and 10K from clamped "HM inserts", after Feed the following

Thread pitch directing chip thickness, the remaining metal shreds and

Non-circularities 25 on the drill pipe cutting away to create a clean thread cutting surface, following with increasing threading phase 91 clamped equipped with "VHM Whitworth thread full profile inserts" 6B, 9B and 10B distributed around the circumference and staggered in depth 10A to 10J, in their pitch after the Increase of the prefabricated turned conical thread directing 9H

Chip removal apertures 6C, 9C and 10C blend outwardly into a pre-machined turned slightly conical 9E and 9G counter thread (9E corresponds to press zone), but a cylindrical one with the "VHM Whitworth Thread Full Profile Inserts"

"Fine thread" on the remaining drill pipe stub 6 cuts in the cutting direction 26 and continues to rotate with the weakly tapered mating thread in the cap or sleeve 9E 9G to a pressure on the old drill pipe stub 6 until the drive machine stops turning or the old drill pipe 6 rotates and so both drill pipes are firmly bolted together so that the drill string can be recovered.

A. Connection device for a damaged in the deep sea gas or petroleum pipe at Preventer, is formed by the fact that at the bottom of a new intact

Conveyor tube 1 a sleeve-like body 7 is welded, which has an inwardly facing guiding phase 7F on the front, after which a radial pre-cutter 9K and 10K from clamped "carbide inserts" follows, distributed evenly around the circumference, per revolution, oriented at the following thread pitch a thin

Spandicke yields, following with the actual increasing fine thread cutting phase 91 evenly distributed on the inner circumference, staggered in depth 10A to 10J, with

clamped "VHM Whitworth thread full profile inserts" 9B and 10B, which cuts a cylindrical "fine" on the web of the pipe flange 8 on Preventer 8A, while chip removal by means of apertures 6C, 9C and 10C to the outside, a thread which is in a prefabricated turned weakly tapered "fine thread" 9E and 9G of the sleeve-like body 7 welded to the new conveyor pipe 1, to a pressing 9E and 9G screwed until the prime mover it not continues to turn and so the delivery pipe 1 is firmly screwed to the preventer 8A, so that now no more oil or gas exits through the screw and this can be stopped with a following slide 1 and 11 to 15A and even promoted. A connecting device for a damaged in the deep sea gas or Erdölförderrohr on Preventer, is formed by the fact that at the bottom of a new intact

Conveyor tube 1, a bell-shaped body 9 is welded, which has an inwardly facing guiding phase 9F on the front, after which a radial peeler 9K follows from clamped "carbide inserts", which are evenly distributed around the circumference, per revolution, oriented at the following thread pitch uniformly distributed on the inner circumference, staggered in depth from 10A to 10J with clamped "Whitworth threaded solid profile inserts" 9B and 10B having a cylindrical "fine" thread "on the edge of the pipe flange 8 and the preventer 8A or only on the flange 8 or the Preventerkopf 8A cuts at the same time

Spanabführung by means of outward openings 9C and 10C, a thread which turns into a slightly conical prefabricated turned "fine" thread 9E and 9G of the bell-shaped body 9 welded to the new conveyor tube to a rotation 9E and 9G, until the prime mover stops turning it, and so that the delivery pipe is firmly screwed to the preventer, so that no oil or gas escapes through the screw connection and this can even be promoted.

An apparatus of a hydraulically operated deep sea suitable flat slide 13 with opening 14, is formed by a at a new conveyor pipe 1 at the lower end of a welded together two halves slide housing 11 and 12 with internal sliding flat slide 13 with opening 14 on

Inner diameter thickness, which allows performing for the purpose of salvage a damaged drill pipe or re-drilling and on the underside of a continuing production pipe 1 is welded, the flat slide through

hydraulic or pneumatic pressure on the end wall surfaces 15 can be moved back and forth and so the delivery pipe opens and closes and in the hydraulic ports 15A high-pressure gear pumps can be screwed and driven by deep-sea robots or liquid nitrogen from high-pressure bottles or acting on the end faces 15 by the existing source pressure, controlled by valves controlled by robots move the slide.

A device for facilitating the guiding of the closure devices or attachment devices in the deep sea (see FIG. 4) is formed by a divided 17 fixedly retractable auxiliary armature 16, which is not easily influenced by the escaping oil surge and which is slanted on the contact surfaces outer

Contact surfaces on the flange 8 and the Preventer 8A touches, similar to the mounting aid of a guide mandrel for handling heavy tumbling components, thereby a clean guiding the tons of heavy conveying pipe for tapping

guaranteed.

A method for decoupling of downhole production pipes (FIG. 3) is formed by the fact that the upper production pipe 18 has a threaded ring 20 with fine cylindrical threading over the conical common connection or pipe coupling thread 19, with which it can be turned in the lower direction Strong conical coupling thread 19 at the lower conveyor pipe 21, the threaded ring 20 something vorschraubt, so that between the two stop surfaces above and below some gap 22 and so does not rotate during coupling, since the thread so have different gradients, but when loosening in the deep sea by turning away the threaded ring upwards with extra provided on a respective bolt circle 23 around the threaded ring 20 and the lower conveyor pipe 21 with holes therein and with a lever 24 thereby easier to solve the large thread 19 take the suit and so the entire delivery pipe in the Deep sea can be turned off to catch up without Unintentionally twist apart the entire conveyor tube by turning it halfway to the left.

A method of tapping and tightening in one go is formed by providing in cap-4, bell-9 or sleeve-like 7 or pipe-socket (3) or plug-like 3 metal bodies provided with slightly conical twisted threads 9E and 9G, Receiving recesses 6A, 9A and 10A with pressure ramp evenly distributed around the circumference 6A, 9A and 10A in the depth successively staggered with beveled with oblique cut by grinding provided "VHM Whitworth thread full profile inserts" 9D and 91 equipped and this with Chip removal openings 9C and 10C are provided, a cylindrical thread 9D in the drill pipe 6, the conveyor pipe 5 or on the drill pipe 6, on the web on the flange 8 or the flange 8 and preventer 8A cuts and on the rotated, slightly conical thread 9E and 9G of the nozzle 3 or the plug 3A or in the cap 4, the sleeve 7 or the bell 9 rotates pressing and thus enters a stable connection with the damaged conveyor pipe 5, drill pipe 6, the web on the flange 8 and the flange 8 and preventer 8A.

Of course, the embodiments discussed in the specific description and shown in the figures represent only illustrative embodiments of the present invention. Those skilled in the art will appreciate the broad scope of the disclosure herein

Range of variation possibilities given to the hand.

Claims

claims

1. A method for connecting a new pipe (1, 2) to a counterpart (5, 6, 8, 8A) of a natural gas or oil well damaged in the deep sea,

characterized,

in that the new tube (1, 2) is connected to the counterpart (5, 6, 8, 8A) by a screwing device (3, 3A, 4, 7, 9) arranged at its source-side end and designed as a thread cutting device Counterpart (5, 6, 8, 8A) is connected and remains connected in this position with the counterpart (5, 6, 8, 8A). 2. The method according to claim 1,

characterized,

that the screwing device (3, 3A, 4, 7, 9) to the counterpart (5, 6, 8, 8A) towards a prefabricated, conically formed thread and

that the connecting thread on the counterpart (5, 6, 8, 8A) is cut cylindrically.

3. The method according to claim 1 or 2,

characterized,

in that the screwing device (3, 3A, 4, 7, 9) leads to the counterpart (5, 6, 8, 8A) a plurality of circumferentially distributed rough cutting blades made of hard metal

Cutting inserts (9K + 10K), with which the remaining shreds or discontinuities (25) are cut away, and

in that the screwing device (3, 3A, 4, 7, 9) for the counterpart (5, 6, 8, 8A) points out a plurality of thread cutting plates (6B, 9B, 13) distributed around the circumference and successively staggered in depth, determining the pitch of the connecting thread.

10B) with adjacent chip removal openings (6C, 9C + 10C) with which the connection thread is cut by turning the new pipe (1, 2) with a propulsion following the thread pitch.

4. The method according to any one of claims 1 to 3,

characterized,

that the new tube (1) a delivery pipe (1) and the counterpart (5, 8, 8A) a delivery pipe stub (5) or a flange (8) or a flange (8) and / or a

Preventer (8A) is, and / or

that the new pipe (2) a drill pipe (2) and the counterpart (6). Drill Stump (6)

5. The method according to claim 4,

characterized,

in that the screwing device (3, 3A) is designed as a screwing device (3, 3A) welded to the lower end of the new tube (1, 2), in that the screwing device (3, 3A) has an external thread with the screws

Tapping (6B) and with the tapping plates (6B) adjacent Spanabführungsdurchbrüchen (6C), and

that for connection to the conveyor stump (5) or

Bohrstängerohrstumpf (6) formed counterpart (5, 6) in the counterpart (5, 6) is cut an internal thread, and / or

in that the screwing device (4, 7, 9) is designed as a screwing device (4, 7, 9) welded to the lower end of the new tube (1, 2) and an internal thread with the threading plates (9B, 10B) and with the

Tapping (9B, 10B) adjacent Spanabführungsdurchbrüchen (9C, 10C), and

in that an external thread is cut onto the counterpart (8, 8A) for connection to the counterpart (8, 8A) designed as a flange (8) or as a flange (8) and / or as a preventer (8A).

6. The method according to any one of claims 1 to 5,

characterized,

that in the counterpart (5, 6, 8, 8A) a Whitworth pipe thread is cut. Method for coupling delivery pipes (18, 21) in the deep sea via a

Connecting thread (19),

characterized,

in that the upper conveying pipe (18) is screwed to the lower conveying pipe (21) via a conical pipe thread (19), a gap (22) remaining between an end face and an adjacent stop face, and a threaded ring (15) arranged on the upper conveying pipe (18). 20) with a comparison with the conical pipe thread (19) finer cylindrical thread

Counter rotation is struck on a stop surface of the lower conveyor tube (21),

Device for connecting a new pipe (1, 2) to a counterpart (5, 6, 8, 8A) of a natural gas or petroleum source damaged in the deep sea,

characterized,

in that the new tube (1, 2) is connected to the counterpart (5, 6, 8, 8A) by a screw device (3, 3A, 4, 7, 9) arranged at its source-side end and designed as a thread cutting device and remains connected

Device according to claim 8,

characterized,

Device according to claim 8 or 9,

characterized,

that the screwing device (3, 3A, 4, 7, 9) to the counterpart (5, 6, 8, 8A) towards a plurality of circumferentially distributed Vorschneidklingen of carbide inserts (9K + 10K), with which remaining shreds or pipe

Roundness (25) are wegschneidbar, and

in that the screwing device (3, 3A, 4, 7, 9) for the counterpart (5, 6, 8, 8A) points out a plurality of thread cutting plates (6B, 9B, 13) distributed around the circumference and successively staggered in depth, determining the pitch of the connecting thread. 10B) of hard metal with adjacent chip removal openings (6C, 9C + 10C).

Device according to one of claims 8 to 10,

characterized,

Preventer (8A) is, and / or

that the new pipe (2) a drill pipe (2) and the counterpart (6). Drill Stump (6).

Device according to one of claims 8 to 11,

characterized,

Tapping (6B) and with the tapping plates (6B) adjacent Spanabführungsdurchbrüchen (6C), and / or

Tapping (9B, 10B) adjacent Spanabführungsdurchbrüchen (9C, 10C).

13. Device according to one of claims 8 to 12,

characterized,

in that the screwing device (3, 3A, 4, 7, 9) has a Whitworth pipe thread.

Device according to claim 13,

characterized,

in that the counterpart (5, 6, 8, 8A) connected to the screwing device (3, 3A, 4, 7, 9) has a Whitworth pipe thread cut by the screwing device (3, 3A, 4, 7, 9).