DE1088906B - Standpipe composed of several loosely nested pipe sections for gas extraction from gas wells - Google Patents
Standpipe composed of several loosely nested pipe sections for gas extraction from gas wellsInfo
- Publication number
- DE1088906B DE1088906B DEH35374A DEH0035374A DE1088906B DE 1088906 B DE1088906 B DE 1088906B DE H35374 A DEH35374 A DE H35374A DE H0035374 A DEH0035374 A DE H0035374A DE 1088906 B DE1088906 B DE 1088906B
- Authority
- DE
- Germany
- Prior art keywords
- pipe sections
- standpipe
- individual
- section
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000605 extraction Methods 0.000 title claims description 6
- 238000007789 sealing Methods 0.000 claims description 13
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 239000011435 rock Substances 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 5
- 239000004567 concrete Substances 0.000 claims description 5
- 238000005553 drilling Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 239000008267 milk Substances 0.000 claims description 2
- 210000004080 milk Anatomy 0.000 claims description 2
- 235000013336 milk Nutrition 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims 5
- 240000000491 Corchorus aestuans Species 0.000 claims 1
- 235000011777 Corchorus aestuans Nutrition 0.000 claims 1
- 235000010862 Corchorus capsularis Nutrition 0.000 claims 1
- 230000001464 adherent effect Effects 0.000 claims 1
- 239000004927 clay Substances 0.000 claims 1
- 230000007812 deficiency Effects 0.000 claims 1
- 210000003608 fece Anatomy 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 230000003319 supportive effect Effects 0.000 claims 1
- 239000007789 gas Substances 0.000 description 12
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000002131 composite material Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/14—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics
- F16L11/18—Articulated hoses, e.g. composed of a series of rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L21/00—Joints with sleeve or socket
- F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
- F16L21/03—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings placed in the socket before connection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/10—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations
- F16L27/1017—Joints with sleeve or socket
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/10—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations
- F16L27/113—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations the ends of the pipe being interconnected by a rigid sleeve
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Pipeline Systems (AREA)
Description
DEUTSCHESGERMAN
In Untertagebetrieben werden bekanntlich schlagwetterbildende Grubengase über in das Gebirge gebrachte Gasbohrlöcher abgesaugt. Zu diesem Zweck werden in die Gasbohrlöcher Standrohrleitungen eingeführt, deren Kopf als Absaugsonde ausgebildet ist und deren Schüsse gegeneinander abgedichtet sind. Es hat sich jedoch gezeigt, daß die bisher allgemein übliche Art der Befestigung und Abdichtung der Standrohre im Gebirge durch Vergießen des' Zwischenraumes zwischen Bohrlochwandung und Standrohraußenmantel mit Zementmilch bzw. Beton Anlaß zu mehr oder weniger großen Wetterkurzschlüssen zwischen Bohrloch und Abbaustrecke ist und damit die ursprünglich im Bohrloch vorhandene Methankonzentration bis auf einen Methananteil von 20 °/o und weniger heruntergesetzt wird. Der Grund hierfür ist darin zu suchen, daß der starre Betonring zwischen Standrohr und Bohrlochwand zur Abdichtung keinesfalls ausreicht, zumal dieser Betonmantel durch die über den abgebauten Streb durch das absinkende Hangende hervorgerufenen Gebirgsbewegungen sehr bald verrissen wird, wodurch Zirkulationswege für Schleichströme aus den S trecken wettern in das unter Unterdruck stehende Bohrloch geschaffen werden. Unter Umständen wird durch die Gebirgsbewegungen bereits der Abbindevorgang des Zementes so stark ge-' stört, daß der Zement bzw. Beton überhaupt keinen harten, widerstandsfähigen Körper, sondern nur eine lose zusammenhängende, körnige Masse bildet, die natürlich einen noch bequemeren Weg für Wetterkurzschlüsse ermöglicht, wenn die einzelnen Rohrschüsse im übrigen nicht gegeneinander abgedichtet sind. Auf derartige zusätzliche Abdichtungsmaßnahmen hat man aber, während die einzelnen Rohrschüsse über Muffen und Einsteckende übereinandergeschoben werden, bisher verzichtet. Bei Standrohren, die aus lose zusammengesteckten einzelnen Rohrschüssen bestehen, können so die Kurzschlußströme bereits an den Einsteckstellen in das Standrohr eintreten. Bei in den Muffen verschraubten Einzelrohrschüssen steigen die Kurzschlußströme auch am Standrohr auf, um am Standrohrende vom Unterdruck in den Gasstrom hineingezogen zu werden. Darüber hinaus werden infolge Gebirgsbewegungen Trennungen der einzelnen Rohrschüsse an den verschiedenen Verbindungsstellen beobachtet, was bei den nur lose ineinandergesteckten Teilen mangels Widerstand gegen das Aufeinanderziehen leicht möglich ist, was bei Rohfschüssen, die ineinandergeschraubt sind, aber ebenfalls beobachtet wird, wobei das gesamte Gewinde herausgerissen wird. Ein derartiges Trennen der einzelnen Rohrschüsse tritt dabei nicht nur durch die Gebirgsbewegungen auf, sondern auch beim Bohrvorgang bzw. beim Herausziehen des Bohrgestänges, wenn, dem Bohrvortrieb Aus mehreren lose ineinandergestecktenIn underground operations, as is well known, firedamp-forming mine gases are brought into the mountains Gas wells sucked out. For this purpose, standpipes are inserted into the gas wells, whose head is designed as a suction probe and whose shots are sealed against each other. It However, it has been shown that the previously common type of attachment and sealing of the standpipes in the mountains by pouring the space between the wall of the borehole and the outer casing of the standpipe with cement milk or concrete cause more or less large weather short-circuits between Is the borehole and mining route and thus the methane concentration originally present in the borehole is reduced to a methane content of 20% and less. The reason for this is to seek that the rigid concrete ring between the standpipe and the borehole wall for sealing in no way is sufficient, especially since this concrete shell is caused by the subsiding over the dismantled longwall Hanging rock caused by rock movements very soon panned out, creating circulation routes for Creeping currents from the stretches ramble into the borehole under negative pressure. Under The setting process of the cement is already so strongly influenced by the rock movements. disturbs that the cement or concrete no hard, resistant body at all, but only one forms loosely coherent, granular mass, which of course is an even more convenient way for short-circuits in the weather made possible when the individual pipe sections are not sealed against each other. on Such additional sealing measures have, however, while the individual pipe sections have sleeves and push-in ends have been dispensed with so far. For standpipes that are loosely plugged together individual pipe sections exist, the short-circuit currents can already be at the insertion points enter the standpipe. In the case of individual pipe sections screwed into the sleeves, the short-circuit currents increase also on the standpipe in order to be drawn into the gas flow by the negative pressure at the standpipe end to become. In addition, the individual pipe sections separate as a result of rock movements observed at the various junctions, what happened to the loosely nested Sharing is easily possible due to the lack of resistance to being pulled apart, which is the case with raw feet that are screwed into each other, but is also observed, with the entire thread being torn out. Such a separation of the individual pipe sections does not only occur due to the rock movements on, but also during the drilling process or when pulling out the drill string, if, the drilling drive From several loosely inserted one into the other
Rohrschüssen zusammengesetzteComposite pipe sections
Standrohrleitung für die GasabsaugungStandpipe for gas extraction
aus Gasbohrlöchernfrom gas wells
Anmelder:Applicant:
Carl Hamacher Kommanditgesellschaft,
Wattenscheid, Watermannsweg 27-31Carl Hamacher limited partnership,
Wattenscheid, Watermannsweg 27-31
Friedrich Wittko, Wattenscheid,Friedrich Wittko, Wattenscheid,
und Alfred Förster, Essen,
sind als Erfinder genannt wordenand Alfred Förster, Essen,
have been named as inventors
folgend, die Standrohre in das Bohrloch eingeschoben werden und danach das Bohrgestänge entfernt wird.following, the standpipes are pushed into the borehole and then the drill pipe is removed.
Die bei bekannten Standrohren für Gasbohrlöcher auftretenden Wetterkurzschlüsse sind außerordentlich nachteilig, da einerseits bei derartigen Kurzschlüssen die Absaugung der unter Umständen zur Bildung von' explosiblen Grubenwetter^ führenden Grubengase schlecht wird, darüber hinaus das Gas durch die Luftzumischung in seiner Zusammensetzung so verschlechtert wird, daß es als Brauchgas nicht mehr Verwendung finden kann. Besondere Schwierigkeiten entstehen bei den bekannten, aus ineinandergesteckten Rohrschüssen zusammengesetzten Standrohren außerdem beim Einschieben, wobei dieüblichenKupplungen kaum Verwendung finden können, da sie nach dem Einschieben nicht mehr zugänglich und folglich nicht schließbar sind und Einschraubenden sich nicht bewähren, da sie einerseits die Rohrleitung zu starr machen, so daß sie den Gebirgsbewegungen kaum noch zu folgen in der Lage sind, darüber hinaus infolge dieser Starrheit die Gewinde jedoch auch abreißen.The weather short-circuits that occur with known standpipes for gas wells are extraordinary disadvantageous, since on the one hand with such short circuits the suction of the possibly to the formation of ' explosive mine weather ^ leading mine gases becomes bad, moreover the gas by the air admixture its composition is so deteriorated that it is no longer used as a service gas Can be found. Particular difficulties arise with the known pipe sections that are plugged into one another assembled standpipes also when pushing in, whereby the usual couplings hardly Can be used because they are no longer accessible after being pushed in and therefore cannot be closed and screw-in ends do not prove themselves, as they make the pipeline too rigid on the one hand, so that they are hardly able to follow the movements of the mountains, moreover because of this rigidity however, the threads also tear off.
Die Erfindung hat sich die Aufgabe gestellt, eine aus mehreren lose ineinandergesteckten Rohrleitungen zusammengesetzte Standrohrleitung für die Gasabsaugung aus Gasbohrlöchern so auszubilden, daß einerseits mit Sicherheit Wetterkurzschlüsse vermieden werden, darüber hinaus die einzelnen Rohrschüsse leicht in das Bohrloch einbringbar und zum Standrohr zu vereinigen sind.The object of the invention is to create one of several loosely nested pipes to train composite standpipe for gas extraction from gas wells so that on the one hand Weather short-circuits can be avoided with certainty, as well as the individual pipe sections can be easily introduced into the borehole and combined to form the standpipe.
009 607/75009 607/75
Claims (4)
verbindung entsteht, die ein Trennen der einzelnen Fig. 1 im Längsschnitt eine erfindungsgemäße Rohrschüsse durch Zug unmöglich macht. Nach einer Standrohrleitung,to arrange and train them in such a way that In the following the invention is explained in more detail by means of a drawing section showing only one embodiment when the pipe inserted into the socket is bent by a predetermined angle; it shows
Connection arises, which makes a separation of the individual Fig. 1 in longitudinal section a pipe section according to the invention by train impossible. After a standpipe,
Ausnehmung festgeklemmt ist. Zur Verbindung der einzelnen Rohrschüsse sind anhas a shaped cross-section, and in which you- The standpipe shown in the figures processing rings with a circular cross-section made of rubber or consists of several nested pipe sections-like materials are inserted. The circumferential recess is conveniently located in the socket ring drill holes and is used for gas suction from the gas pipe. For this purpose, the standpipe is introduced into a gas borehole going beyond the semicircular cross-section and with a Beden cross-section on the outside, so that the sealing ring is cast or pressed in this clay or cement.
Recess is clamped. To connect the individual pipe sections are on
der erfindungsgemäßen Standrohrleitung in üblicher
Weise vorzunehmende Anpressung mit ZementmilchThe advantages achieved by the invention are 45 pages are smooth. These pipe sections 1 are mainly seen in the fact that according to the invention the standpipe association alternately with each other angeordeinzelnen pipe sections, z. B. the borehole driving net. It is advantageous to slide slightly over the drill rods between the individual stand and pipe sections 1 to realize a margin S into the borehole, whereby borrowed, as it is recognizable at the coupling points according to the Fib during this insertion process, the insertion end in 50 gures. The latter can be achieved z. B. the sleeves of the respectively assigned pipe sections ge in that one long when introducing the individual. As the borehole progresses, pipe sections 1 runs the pipe section ends with a jute either the drill or rock movements occur, wrapping or the like in the area of the insertion end, which surrounds a bend of the individual pipe sections in such a way that the socket edge is on top of one another, with these bends - 55 sets so that it is not possible to insert the insert into the joints of the pipe sections inseparably into the sockets 2. The bar jam so that they absorb the stresses occurring head 5 of the standpipe according to the invention. At the same time are already widened funnel-shaped as a suction head and has the insertion and through the described Abwin guide ribs 6, z. B. four along the circumference verkelung the individual pipe sections absolutely tightly anein- 1 60 divided guide ribs that connected the head 5 against the Bohrander, so that even if the lead supportive at the wall of the hole,
the standpipe according to the invention in the usual
Wise pressure to be carried out with cement milk
haft ist, eine absolute Dichtwirkung erhalten bleibt.or concrete between the pipe and the borehole wall claims dung in the above described manner deficiency 65
is adherent, an absolute sealing effect is maintained.
USA-Patentschrift Nr. 1464647.Tn considered publications:
U.S. Patent No. 1464647.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH35374A DE1088906B (en) | 1959-01-16 | 1959-01-16 | Standpipe composed of several loosely nested pipe sections for gas extraction from gas wells |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH35374A DE1088906B (en) | 1959-01-16 | 1959-01-16 | Standpipe composed of several loosely nested pipe sections for gas extraction from gas wells |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1088906B true DE1088906B (en) | 1960-09-15 |
Family
ID=7152679
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEH35374A Pending DE1088906B (en) | 1959-01-16 | 1959-01-16 | Standpipe composed of several loosely nested pipe sections for gas extraction from gas wells |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1088906B (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3150881A1 (en) * | 1980-12-27 | 1982-07-08 | Horiba Ltd., Kyoto | Flexible sheathing for hoses, lines and the like |
DE3705236A1 (en) * | 1987-02-19 | 1988-09-01 | Mueller & Borggraefe Kg | Methane suck-off pipe for gas boreholes in underground mining |
FR2673698A1 (en) * | 1991-03-04 | 1992-09-11 | Techlan | Flexible coupling for pipelines |
US5354104A (en) * | 1993-01-15 | 1994-10-11 | Techlam | Flexible coupling for pipework |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1464647A (en) * | 1920-02-27 | 1923-08-14 | Domowicz George | Gas extractor |
-
1959
- 1959-01-16 DE DEH35374A patent/DE1088906B/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1464647A (en) * | 1920-02-27 | 1923-08-14 | Domowicz George | Gas extractor |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3150881A1 (en) * | 1980-12-27 | 1982-07-08 | Horiba Ltd., Kyoto | Flexible sheathing for hoses, lines and the like |
DE3705236A1 (en) * | 1987-02-19 | 1988-09-01 | Mueller & Borggraefe Kg | Methane suck-off pipe for gas boreholes in underground mining |
FR2673698A1 (en) * | 1991-03-04 | 1992-09-11 | Techlan | Flexible coupling for pipelines |
US5354104A (en) * | 1993-01-15 | 1994-10-11 | Techlam | Flexible coupling for pipework |
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