EP2771532A2 - 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

Info

Publication number
EP2771532A2
EP2771532A2 EP12812848.5A EP12812848A EP2771532A2 EP 2771532 A2 EP2771532 A2 EP 2771532A2 EP 12812848 A EP12812848 A EP 12812848A EP 2771532 A2 EP2771532 A2 EP 2771532A2
Authority
EP
European Patent Office
Prior art keywords
lubricant
drilling
rock
section
calculation
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.)
Granted
Application number
EP12812848.5A
Other languages
German (de)
English (en)
Other versions
EP2771532B1 (fr
Inventor
Steffen Praetorius
Christian Rein
Marc Peters
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Herrenknecht AG
Original Assignee
Herrenknecht AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Herrenknecht AG filed Critical Herrenknecht AG
Publication of EP2771532A2 publication Critical patent/EP2771532A2/fr
Application granted granted Critical
Publication of EP2771532B1 publication Critical patent/EP2771532B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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.
  • CONFIRMATION COPY hydraulically hydraulically
  • the number of work steps (pilot hole, expansion bore, retraction or insertion process) proven.
  • Other distinguishing features are, for example, the basic geometric design of the drilling axis (rectilinear, curved) and the pipe materials to be laid by means of the respective method (eg concrete, PE, cast iron, steel, etc.).
  • the achievable bore dimensions are sometimes already suitable to assign certain procedures of the same or another group of procedures.
  • One known method is microtunneling (MT).
  • MT microtunneling
  • 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.
  • the lubricant supports the substrate. As a result, the skin friction between the substrate and jacking pipe is greatly reduced.
  • a continuous lubricating film is present, it is possible to preferentially push large sections or the entire tubing string as a whole.
  • stretchers in the pipe string can be omitted, which saves time and an effective propulsion power is achieved.
  • 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 all at once it is necessary is to use Dehner stations. If there is an excess supply of lubricant in the annulus, negative effects such as blowouts or blockage of the pipe string can occur due to the overpressure 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.
  • 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 in that the length of the drill is divided into sections that each Assigning a rock, that for each section a target amount of lubricant to be dispensed is calculated, that in the calculation an annular volume provided in section flows into the calculation, that in the calculation of a rock factor flows in from the rock of the section and the absorption capacity of the rock in relation on the lubricant results.
  • 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. It is furthermore advantageous that the delivery quantity of a lubricant delivery point is calculated with respect to the respective section, wherein the calculation includes a traveled distance of drilling progress, a drilling progress rate and / or a drilling time to reach the respective drilling progress point on which the calculation is based is taken into account. 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. Furthermore, it is advantageous that 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. It is also advantageous that the main delivery point and the Nach Stirllabgabestelle be supplied either via one or via a respective line and pump with lubricant. By providing 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.
  • 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.
  • a control is provided, via which the calculation of the additional lubricant delivery 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 call 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. The invention will be explained in more detail below appended to an embodiment in conjunction with a drawing. Showing:
  • 1 is a schematic view of the borehole with route plan and section division
  • FIG. 2 shows a schematic side view of a sub-dispensing point according to the invention
  • Fig. 3 is a schematic view of a valve station according to the invention.
  • Fig. 4 is a schematic view of a erfindungsmä hybrid system control.
  • 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 additional delivery parts 13 are provided. In addition, Dehner stations (not shown) can be arranged. At the main delivery point 11 and the Mauabgabsmaschine 13 Ausläse 14 are arranged, through which the lubricant 28 in an annular space 15 between outer tube side 16 and surface 18 of the Borehole 17 is introduced. In the annulus 15 is the lubricant 28 (here Bentonit Practicalung).
  • the secondary delivery parts 13, as shown for example in FIG. 2, comprise outlets 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 pumped by means of a pump 19 (see FIG. 4) through the main line 20 into the supply line 26.
  • valves 24 are arranged, which are connected to a control line 25 to a controller 22 (Fig. 4).
  • 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.
  • 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 Verpressmengenverannon is shown.
  • the respective Verpressmenge 37 depending on the geometry of the annulus 15 and the rock type 32.
  • the respective amounts of compression 37 per section 33 both in the main compression as well as in the Mauverpressung determine.
  • the amount of injection 37 is shown with respect to the section 33, respectively. This makes it possible to monitor what the actual amount of lubricant actually delivered to a particular specific valve 24 or section 33 is, how large they actually are should and how much still needs to be delivered. Furthermore, it becomes possible to monitor on which valve 24 of the respective secondary delivery parts 13 lubricant 28 is compressed. The same applies to the lubricant delivery at the main delivery point 11.

Landscapes

  • 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)

Abstract

L'invention concerne un procédé pour réaliser un forage selon lequel un dispositif de forage est déplacé le long d'un tracé de forage d'un point de départ à un point d'arrivée, une force étant exercée par l'intermédiaire d'un train de tiges, le forage créant entre la roche et le train de tiges un espace annulaire qui est rempli d'un lubrifiant, ce lubrifiant étant amené dans l'espace annulaire par pompe au moyen d'au moins une conduite de lubrifiant. L'invention vise à améliorer ce procédé afin de permettre des longueurs de canalisation accrues. A cet effet, le tracé de forage est subdivisé en sections sur sa longueur, à chaque section correspond une roche, pour chaque section est calculée une quantité nominale de lubrifiant à répandre, le calcul tient compte du volume de l'espace annulaire de la section, le calcul tient compte d'un facteur roche qui comprend la roche de la section et la capacité d'absorption de la roche relativement au lubrifiant.
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 true EP2771532A2 (fr) 2014-09-03
EP2771532B1 EP2771532B1 (fr) 2015-07-22

Family

ID=48794474

Family Applications (1)

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

Country Status (3)

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

Families Citing this family (2)

* 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

Family Cites Families (3)

* 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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2013117208A2 *

Also Published As

Publication number Publication date
WO2013117208A2 (fr) 2013-08-15
DE102012002417A1 (de) 2013-08-08
EP2771532B1 (fr) 2015-07-22
WO2013117208A3 (fr) 2013-12-19

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