EP2771532B1 - Alimentation en lubrifiant d'un forage destiné à la pose d'une canalisation - Google Patents

Alimentation en lubrifiant d'un forage destiné à la pose d'une canalisation Download PDF

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Publication number
EP2771532B1
EP2771532B1 EP12812848.5A EP12812848A EP2771532B1 EP 2771532 B1 EP2771532 B1 EP 2771532B1 EP 12812848 A EP12812848 A EP 12812848A EP 2771532 B1 EP2771532 B1 EP 2771532B1
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EP
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Prior art keywords
lubricant
rock
dispensing
drilling
section
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Application number
EP12812848.5A
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German (de)
English (en)
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EP2771532A2 (fr
Inventor
Steffen Praetorius
Christian Rein
Marc Peters
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Herrenknecht AG
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Herrenknecht AG
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/08—Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure

Definitions

  • the invention relates to a method for performing a bore in which a drilling device is moved from a starting point with force via a pipe string to a target point along a drilling section, wherein during drilling an annular space between the rock and the pipe string is formed, which is filled with a lubricant the lubricant is supplied to the annulus via at least one lubricant line with pump, and a system for supplying lubricant in an annulus of a bore for laying a pipeline having a main delivery point with at least one switchable valve, with at least one refill delivery point, with at least one lubricant delivery point, with at least a switchable valve, wherein at least one conduit and a pump for transporting the lubricant to the delivery points are provided.
  • a classification of the procedures on the basis of the controllability (controlled / uncontrolled procedures), the soil treatment (soil displacement / soil removal), the Bohrkleintransports (mechanical, hydraulic) and the number of work steps (pilot drilling, Aufweitbohrung, Einzieh- or insertion process) has proven . Further distinguishing features are e.g. the basic geometric design of the drilling axis (rectilinear, curved) and the pipe materials to be laid by means of the respective method (for example concrete, PE, cast iron, steel, etc.). In addition, the achievable bore dimensions (length, diameter, volume) are sometimes already suitable to assign certain procedures of the same or another group of procedures.
  • microtunneling In this case, a controlled, sometimes curved bore is usually created from a launch shaft or a starting pit to a target shaft or a target pit. Characteristic of this method is that pilot drilling, Aufweitbohrung and insertion process of the tubes are realized in a single step. This combined operation is basically carried out pushing or pushing out of the starting shaft or the starting excavation pit and the non-zugfest interconnected jacking pipes generally correspond at the same time to be laid product tubes.
  • the lubricant creates a lubricating film between the jacking pipe and the surrounding substrate. At the same time, the lubricant supports the substrate. As a result, the skin friction between the substrate and jacking pipe is greatly reduced. If a continuous lubricating film is present, it is possible to preferentially push large sections or the entire tubing string as a whole. The use of stretchers in the pipe string can be omitted, which saves time and an effective propulsion power is achieved.
  • annular space If the annular space is under-supplied with lubricant, it may lead to attachment of the soil to the jacking pipe or to the flushing of fines from the excavation chamber. This leads to greatly increased skin friction, which can lead to the fact that it is no longer easily possible to achieve the appropriate driving lengths or suddenly it is necessary to use Dehner stations. Is a Excessive supply of lubricant in the annulus, negative effects such as blowouts or blockage of the pipe string may occur due to the pressure in the annulus.
  • a delivery point which has, for example switchable valves, provided on or behind the drilling device.
  • the switching of the valves for example, by an electric motor or alternatively with compressed air or hydraulic systems.
  • a conduit is provided which is connected to the valves.
  • the line itself is connected to a pump and a tank system, from which the lubricant is supplied to the valves.
  • discharge stations are provided at intervals between the piping of the pipe string, which also have valves and are also connected to the main line for the delivery of lubricant. These valves are also switchable.
  • DE 197 49 771 C1 discloses a method in which a pipeline for managing the pipeline is introduced into an existing old pipeline. The old pipe is destroyed by a workover cone.
  • DE 197 49 771 C1 deals with the question of how to introduce lubricant into an area in which the new pipeline is located, so that the annular space between the new pipeline and the old pipeline or the surrounding rock is filled with lubricant.
  • the approaches pressure-constant introduced lubricant or constant flow rate introduced lubricant are applied. Constant pressure applied lubricant is used when the old pipeline remains, or the borehole wall is so stable that is not expected to eruptions. If this is not the case, the lubricant is introduced with constant volume flow. In the first case, it is disclosed that if there is cavitation in the vicinity of the borehole, the volumetric flow rate is increased to keep the pressure constant until the maximum possible volumetric flow rate is reached. Subsequently, the propulsion speed should be reduced.
  • DE 103 56 696 B3 discloses a method for trenchless laying of underground pipelines from a launch shaft with a shield machine. Between the pipes to be collected and the borehole wall there is an annular space filled with a lubricant.
  • DE 103 56 696 B3 discloses that in the area of the shield machine, the first tube or the first lubrication station, a continuous or periodic investigation of the nature of the soil is carried out and, depending on the result of the investigation, the soil in the examined area is sealed or solidified by a sealing and / or solidifying medium , or the composition of the support and lubricant is adjusted to the particular soil condition. It is provided a pipe area, which is provided with shut-off elements, through which the annulus can be closed within a certain range.
  • injection nozzles are provided, which pass through the pipe and open into the annulus.
  • the injection lines are fed with two supply lines, each having a control unit.
  • the one supply line additionally has a parallel mixing device, via which the lubricant is adjustable.
  • measuring devices are provided, via which the injection or support pressure in the annular space is determined.
  • the object of the invention is therefore to improve in the aforementioned method and the aforementioned system such that longer laying lengths are possible and at the same time can be dispensed with the use of intermediate-Dehner stations.
  • the object according to the invention is achieved by dividing the drilling section into sections lengthwise, assigning a stone to each section, calculating for each section a desired quantity of lubricant to be dispensed, and including in the calculation an annular volume provided in section in that the calculation includes a rock factor which results from the rock of the section and the capacity of the rock in relation to the lubricant.
  • a further teaching of the invention provides that at least one lubricant delivery point is provided along the pipe string, over which an additional lubricant delivery during the drilling progress is defined with respect to the respective section.
  • a further teaching of the invention provides that the discharge quantity of a lubricant delivery point is calculated with respect to the respective section, wherein the calculation includes a rock loss factor resulting from the rock of the respective section and the loss of the lubricant in the section into the rock , This also makes it possible in a sufficient manner to compensate for the losses of the annulus without overfilling.
  • the delivery quantity of a lubricant delivery point is calculated with respect to the respective segment, wherein the calculation takes into account a covered drilling progress distance, a drilling progress rate and / or a drilling time for achieving the respective drilling progress point on which the calculation is based. This makes it possible to incorporate the quantities to be delivered in relation to the actual rate of drilling.
  • a further teaching of the invention provides that a main delivery point for the lubricant in the field of drill, so for example, at, behind or behind the drill, is provided, the dispensing valves, which are switchable, and preferably with at least one supply line with a pump be controlled.
  • At least one refill delivery point is provided with the at least one lubricant delivery point along the pipe string having discharge valves which are switchable, and which are preferably controlled by at least one supply line and a pump.
  • the main delivery point and the Nach Schollabgabestelle supplied either via one or via a respective line and pump with lubricant become.
  • a main delivery point can be done in a defined amount of the necessary lubricant delivery to fill the annulus depending on the rock.
  • lubricant is bentonite.
  • the pressure of the lubricant is measured in the line and / or on the pump.
  • this is another indication based on a change in the system is detected.
  • a further teaching of the invention provides that a control is provided, via which the calculation of the setpoint quantity of the lubricant to be dispensed takes place.
  • the control makes it possible to determine the respective parameters, to carry out a target / actual comparison and also to carry out a monitoring, with which it is possible to retrieve in situ the conditions actually prevailing and at the same time to get a detailed evaluation, like the conditions so far for example, to make inferences about changes in the process of drilling while adjusting the parameters with respect to the control.
  • Another teaching of the invention provides that the switching of the valves takes place by means of compressed air.
  • a further teaching of the invention provides that the lubricant delivery is switched prioritized according to a delivery target value and / or a difference between the taxable target value and the actual taxable value. It is particularly preferred that the prioritization via the switching of the valves be switched according to a delivery target value and / or a difference between the taxable target value and the actual taxable value. As a result, the most uniform possible distribution of the lubricant in the annulus is achieved.
  • the object according to the invention is achieved by providing a controller for carrying out the aforementioned method.
  • Fig. 1 shows a route plan A of a hole.
  • the route plan A reflects the mountains 30 again and in which type of rock 32, the mountain 30 is divided in each mountain section 31. It is determined whether, for example, the mountain portion is a section of sand 34, gravel 35 or clay 36 or other types of rock.
  • a pipe sequence diagram B is shown, from which it can be seen that already an area of the drilling section E has been drilled in the direction of drilling D.
  • the route plan A further has a section categorization C of sections 33.
  • the section division C reflects the Verpressmengenver notoriousnite F of each associated Verpressmenge 37 again.
  • the borehole 17 is created by means of a boring head 10, to which a main delivery point 11 for the delivery of lubricant, here bentonite flushing, is connected. Subsequently, pipe sections 12 are arranged. At regular intervals subcontracting points 13 are provided. In addition, Dehner stations (not shown) can be arranged. At the main delivery point 11 and the secondary delivery point 13 Auslvesse 14 are arranged through the lubricant 28 is introduced into an annular space 15 between outer side 16 of the tube 16 and surface 18 of the borehole 17. In the annulus 15 is the lubricant 28 (here Bentonit Practicalung).
  • the Superabgabestelle 13, such as in Fig. 2 includes blower 14, which are connected to distribution lines 23 in a valve station 21.
  • the valve station 21 is connected to a supply line 26 to the main line 20.
  • the lubricant 28 is by means of a pump 19 (see Fig. 4 ) is pumped through the main line 20 into the supply line 26.
  • valves 24 are arranged, which are connected to a control line 25 with a controller 22 (FIG. Fig. 4 ) are connected.
  • the pumps 19 are connected via control lines 25 to the controller. This also applies to pressure sensors 27 or other measuring sensors (not shown).
  • the main delivery point 11 has a similar structure.
  • the controller 22 is connected to a terminal 29 for inputting and outputting.
  • a terminal 29 On the terminal 29, the route plan A with the mountain sections 31, the pipe sequence plan B with the individual elements of Bohrvortriebs and the section C and the associated respective Verpressmengenver whatsoever is shown.
  • the respective Verpressmenge 37 depending on the geometry of the annulus 15 and the rock type 32.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)

Claims (13)

  1. Procédé pour réaliser un forage, dans lequel un dispositif de forage est déplacé d'un point de départ, avec introduction de force, par le biais d'un tubage jusqu'à un point cible le long d'une section de forage, un espace annulaire (15) étant produit entre la roche (30) et le tubage lors du forage, lequel est rempli de lubrifiant, le lubrifiant (28) étant acheminé à l'espace annulaire (15) par le biais d'au moins une conduite de lubrifiant (20) avec la pompe (19), caractérisé en ce que la section de forage (E) est divisée sur sa longueur en portions (33), en ce qu'une roche (32) est assignée à chaque portion (33), en ce que pour chaque portion (33), une quantité de consigne de lubrifiant (28) à délivrer est calculée, en ce qu'un volume d'espace annulaire prévu dans la portion influe sur le calcul, en ce qu'un facteur de roche, qui dépend de la roche (32) de la portion (33) et de la capacité de réception de la roche (32) par rapport au lubrifiant (28), influe sur le calcul.
  2. Procédé selon la revendication 1, caractérisé en ce que le long du tubage est prévu au moins un point de distribution de lubrifiant (11, 13) par le biais duquel une distribution supplémentaire de lubrifiant a lieu de manière définie pendant la progression du forage par rapport à la portion respective (33).
  3. Procédé selon la revendication 2, caractérisé en ce que la quantité délivrée d'un point de distribution de lubrifiant (11, 13) est calculée par rapport à la portion respective (33), un facteur de perte dans la roche, qui dépend de la roche (32) de la portion respective et de la perte de lubrifiant (28) dans la roche (30) se produisant dans la portion (33), influant sur le calcul.
  4. Procédé selon la revendication 2 ou 3, caractérisé en ce que la quantité délivrée d'un point de distribution de lubrifiant (11, 13) est calculée par rapport à la portion respective (33), une distance de progression du forage parcourue, une vitesse de progression du forage et/ou un temps de forage pour atteindre le point de progression du forage respectivement à la base du calcul, influant sur le calcul.
  5. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'un point de distribution principal (11) pour le lubrifiant (28) est prévu dans la région de la machine de forage (10), qui présente des soupapes de distribution (14, 24), qui peuvent être commutées et qui sont de préférence commandées avec au moins une conduite d'alimentation (20) avec une pompe (19).
  6. Procédé selon l'une quelconque des revendications 2 à 5, caractérisé en ce qu'au moins un point de distribution de remplissage (13) est prévu avec l'au moins un point de distribution de lubrifiant le long du tubage, lequel présente des soupapes de distribution (14, 24) qui peuvent être commutées et qui sont de préférence commandées avec au moins une conduite d'alimentation (20) et une pompe (19).
  7. Procédé selon les revendications 5 et 6, caractérisé en ce que le point de distribution principal (11) et le point de distribution de remplissage (13) sont alimentés en lubrifiant (28) soit par le biais d'une soit respectivement par le biais d'une conduite (20) et d'une pompe (19), et/ou en ce que la pression du lubrifiant est mesurée dans la conduite (20) et/ou au niveau de la pompe (19).
  8. Procédé selon l'une quelconque des revendications 1 à 7, caractérisé en ce qu'il est prévu une commande (22) par le biais de laquelle s'effectue le calcul de la quantité de consigne de lubrifiant (28) à délivrer.
  9. Procédé selon l'une quelconque des revendications 3 à 8, caractérisé en ce qu'il est prévu une commande (22) par le biais de laquelle s'effectue le calcul de la distribution supplémentaire de lubrifiant.
  10. Procédé selon la revendication 8 ou 9, caractérisé en ce que la division de la section de forage en portions (33), l'assignation de la roche (32), le calcul du volume d'espace annulaire, l'entrée des paramètres de la roche, la détection de la quantité délivrée de lubrifiant (28), la détection des pressions de lubrifiant (28) existant au niveau de la pompe (19) et/ou dans la conduite (20), la commutation des soupapes de distribution (24), l'émission des états de fonctionnement réels actuels et/ou l'émission des états de fonctionnement passés s'effectuent par le biais de ou avec la commande (22).
  11. Procédé selon l'une quelconque des revendications 3 à 8, caractérisé en ce que la distribution de lubrifiant est commutée de manière prioritaire en fonction d'une valeur de consigne de distribution et/ou d'une différence entre la valeur de consigne de distribution et la valeur réelle de distribution.
  12. Système pour acheminer du lubrifiant (28) dans un espace annulaire (15) d'un forage pour poser une conduite tubulaire avec un point de distribution principal (11) avec au moins une soupape commutable (24), avec au moins un point de distribution de remplissage (13), avec au moins un point de distribution de lubrifiant (14), avec au moins une soupape commutable (24), au moins une conduite (20) et une pompe (19) pour le transport du lubrifiant (28) aux points de distribution (11, 13) étant prévues, caractérisé en ce qu'il est prévu une commande (22) qui est réalisée de telle sorte que lors de la réalisation d'un forage, dans lequel un dispositif de forage (10) est déplacé d'un point de départ, avec introduction de force, par le biais d'un tubage jusqu'à un point cible le long d'une section de forage, un espace annulaire (15) étant produit entre la roche et le tubage lors du forage, l'espace annulaire (15) étant rempli de lubrifiant (28), le lubrifiant (28) étant acheminé à l'espace annulaire (15) par le biais d'au moins une conduite de lubrifiant (20) avec la pompe (19), la section de forage étant divisée sur sa longueur en portions (33), une roche (32) étant assignée à chaque portion (33), et pour chaque portion (33), une quantité de consigne de lubrifiant (28) à délivrer étant calculée, un volume d'espace annulaire prévu dans la portion (33) influant sur le calcul, et un facteur de roche, qui dépend de la roche (32) de la portion (33) et de la capacité de réception de la roche (32) par rapport au lubrifiant (28), influant sur le calcul.
  13. Système selon la revendication 12, caractérisé en ce que la commande (22) est réalisée de telle sorte qu'un procédé selon l'une quelconque des revendications 2 à 11 puisse être mis en oeuvre.
EP12812848.5A 2012-02-08 2012-12-17 Alimentation en lubrifiant d'un forage destiné à la pose d'une canalisation Active EP2771532B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102012002342 2012-02-08
DE102012002417A DE102012002417A1 (de) 2012-02-08 2012-02-09 Schmiermittelversorgung einer Bohrung zum Verlegen einer Rohrleitung
PCT/EP2012/005197 WO2013117208A2 (fr) 2012-02-08 2012-12-17 Alimentation en lubrifiant d'un forage destiné à la pose d'une canalisation

Publications (2)

Publication Number Publication Date
EP2771532A2 EP2771532A2 (fr) 2014-09-03
EP2771532B1 true EP2771532B1 (fr) 2015-07-22

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EP12812848.5A Active EP2771532B1 (fr) 2012-02-08 2012-12-17 Alimentation en lubrifiant d'un forage destiné à la pose d'une canalisation

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EP (1) EP2771532B1 (fr)
DE (1) DE102012002417A1 (fr)
WO (1) WO2013117208A2 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9777559B2 (en) * 2014-04-29 2017-10-03 China Petroleum & Chemical Corporation Reliability assessment and risk management for managed pressure drilling
CN107448166B (zh) * 2016-05-31 2019-12-10 中国石油天然气集团公司 一种钻井防喷器系统的风险评估方法及装置

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5484232A (en) * 1993-03-03 1996-01-16 Tokyo Gas Company Ltd. Method for injecting lubricant and filler in the pipe-jacking method
DE19749771C1 (de) * 1997-11-11 1999-03-18 Gunter Huettner & Co Gmbh Bauu Verfahren zum Einbringen von Gleit- und Füllmittel beim grabenlosen Verlegen von Versorgungsleitungen und Vorrichtung zur Durchführung des Verfahrens
DE10356696B3 (de) * 2003-11-28 2005-06-30 Prof. Dr.-Ing. Stein & Partner Gmbh Verfahren und Vorrichtung zur grabenlosen Verlegung von Rohrleitungen

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Publication number Publication date
WO2013117208A2 (fr) 2013-08-15
WO2013117208A3 (fr) 2013-12-19
EP2771532A2 (fr) 2014-09-03
DE102012002417A1 (de) 2013-08-08

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