EP0047878B1 - Procédé et dispositif pour la mesure d'une pression d'injection dans une fondation - Google Patents

Procédé et dispositif pour la mesure d'une pression d'injection dans une fondation Download PDF

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Publication number
EP0047878B1
EP0047878B1 EP81106472A EP81106472A EP0047878B1 EP 0047878 B1 EP0047878 B1 EP 0047878B1 EP 81106472 A EP81106472 A EP 81106472A EP 81106472 A EP81106472 A EP 81106472A EP 0047878 B1 EP0047878 B1 EP 0047878B1
Authority
EP
European Patent Office
Prior art keywords
pressure
measuring
injection
location
infeed line
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.)
Expired
Application number
EP81106472A
Other languages
German (de)
English (en)
Other versions
EP0047878A3 (en
EP0047878A2 (fr
Inventor
Hans Heimgartner
Karl Wirz
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.)
Hany & Cie Ag
HANY AND CIE AG
Original Assignee
Hany & Cie Ag
HANY AND CIE 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 Hany & Cie Ag, HANY AND CIE AG filed Critical Hany & Cie Ag
Priority to AT81106472T priority Critical patent/ATE16302T1/de
Publication of EP0047878A2 publication Critical patent/EP0047878A2/fr
Publication of EP0047878A3 publication Critical patent/EP0047878A3/de
Application granted granted Critical
Publication of EP0047878B1 publication Critical patent/EP0047878B1/fr
Expired legal-status Critical Current

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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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/25—Methods for stimulating production
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
    • 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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
    • E21B33/138—Plastering the borehole wall; Injecting into the formation
    • 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
    • E21B47/00—Survey of boreholes or wells
    • E21B47/06—Measuring temperature or pressure

Definitions

  • the present invention relates to a method and a device for determining the injection pressure in structural injections according to the preamble of claim 1 and claim 3.
  • the injection pressure in boreholes it is known to calculate the injection pressure mathematically based on the pressure generated by the injection pump and the parameters of the feed line through which the injection medium flows, to the boreholes. Since the quantities required for this calculation are not always known with sufficient accuracy and can possibly change during the injection process, the injection pressure cannot be determined with sufficient accuracy in this way.
  • the present invention now aims to overcome the drawbacks mentioned above. It is therefore the task of creating a method or a device of the type mentioned at the outset which, using simple means and in a reliable manner, permits the most accurate possible detection of the injection pressure actually prevailing at the injection site.
  • the measuring point In order to record the injection pressure at the injection point as precisely as possible, the measuring point is probably located near the outlet of the supply line, but not at this outlet itself. By providing the pressure measuring point from the space to be injected, seen behind the packer (borehole seal), preferably in the vicinity thereof, the measuring point is protected from the injection medium emerging from the feed line. At the pressure measuring point, the flow and measurement conditions can be mastered without difficulty, so that an undesirable and uncontrollable falsification of the measurement results cannot occur. Since the measuring point is very close to the outlet of the supply line, i.e. H. located near the injection site, the actual injection pressure at this injection site is recorded with great accuracy. The relatively short distance between the measuring point and the injection point does not significantly impair the meaningfulness of the measuring results.
  • a baffle for swirling the incoming injection material is preferably provided in this measuring chamber.
  • the swirl caused by this baffle keeps the injection material in motion in the measuring chamber. This ensures that there is always an injection material flow on the pressurized part of the pressure measuring device and that no dead zone can form in the area of this pressure-absorbing part, even if the pressure-absorbing part is arranged to the side of the inlet opening of the measuring chamber when viewed in the direction of flow.
  • FIG. 1 shows the outlet-side end of a feed line for an injection medium of a known type which is arranged in a borehole 1 and which can be, for example, an aqueous suspension based on mortar or cement.
  • the injection medium is conveyed to the borehole 1 by an injection pump, not shown, through the feed line, of which a pipe section denoted by 2 is shown.
  • a pressure measuring part 3 Connected to this pipe section 2 is a pressure measuring part 3 screwed to it, the construction of which will be described in more detail below.
  • Another way A screw connection is connected to the pressure measuring part 3, a pipe end part 4, which has an outlet opening 4a for the injection material.
  • This outlet opening 4a lies in the region of the injection point 5.
  • the annular space 6 formed between the pipe end part 4 and the borehole wall 1a is sealed in a known manner by means of a packer 7.
  • This packer 7 can consist, for example, of a cuff which can be inflated by means of compressed air.
  • the pressure measuring part 3 there is a pressure measuring point 8, at which the pressure inside the feed line for the injection medium is measured.
  • a measuring chamber 9 (FIG. 2), which is arranged inside a housing part 10.
  • This measuring chamber 9 tapers in the direction of flow A of the injection medium and has an elliptical cross section. The main axis of this elliptical cross-section lies in the plane of the drawing in FIG. 2.
  • the measuring chamber 9 has an inlet opening 11 and an outlet opening 12.
  • the outlet opening 12 is laterally offset from the inlet opening 11, i. H. the axis 11a of the inlet opening 11 runs at a distance a from the axis 12a of the outlet opening 12.
  • the wall part 13 of the measuring chamber 9 running from the inlet opening 11 to the outlet opening 12 acts as a deflecting surface for the injection medium entering the measuring chamber 9 through the inlet opening 11.
  • a pipe part 14 In the housing part 10, one end of a pipe part 14 is inserted, the other end of which is connected to the pipe section 2, as can be seen in FIG. 1. Since the axis 11a of the inlet opening 11 is offset with respect to the axis of the pipe section 2, the pipe part 14 has a curvature. Adjacent to the tubular part 14 and running approximately parallel to it, a sleeve 15 which is open at both ends is screwed into the housing part 10. A pressure transmitter 16 is arranged in the interior of this sleeve ', the pressurized membrane 16a of which faces the measuring chamber 9. The pressure transmitter 16 is of a type known per se and generates electrical signals proportional to the membrane 16a due to the pressure acting thereon.
  • a cable 18 is connected to the pressure transmitter 16 by means of a plug 17, via which the pressure-proportional signals are fed to a measured value processing point located outside the borehole 1, at which, for example, a pressure display or pressure registration takes place.
  • a sealing ring 19 is arranged between the housing part 10 and the pressure transmitter 16.
  • the pressure of the injection medium flowing through the feed sections 2, 14 and 4 to the injection point 5 is thus measured in a known manner.
  • the injection medium is kept in motion in the measuring chamber 9. This is brought about by the lateral displacement of inlet opening 11 and outlet opening 12 already mentioned.
  • the injection medium entering the measuring chamber 9 from the pipe part 14 through the inlet opening 11 strikes the inclined wall part 13 of the measuring chamber 9 and is thereby deflected. This causes the injection medium to swirl in the measuring chamber.
  • the injection medium within the measuring chamber 9 is kept in constant motion, even in the area of the membrane 16a. This not only ensures a perfect measurement, but also prevents deposits from forming in flow-free spaces in the measuring chamber 9. It goes without saying that it is possible to keep the injection medium in motion inside the measuring chamber 9 in a manner other than that described.
  • the measuring point Since the measuring point is located inside the feed line for the injection medium, the flow and measurement conditions are known and essentially always constant, so that an unadulterated measurement of the pressure in the injection medium is possible. Since the measuring point 8 is also very close to the injection point 5, the measured pressure practically corresponds to the injection pressure actually prevailing at this injection point 5. The relatively small distance between measuring point 8 and injection point 5, which can be, for example, about one meter, has only an insignificant effect on the accuracy of the measuring results.
  • the pressure measuring part 3 Since the pressure measuring part 3 is located behind the packer 7 as seen from the injection point 5, the pressure measuring part 3 is protected against injection medium emerging from the outlet opening 4a. The pressure measuring part 3 can therefore not be damaged by the injection medium. In addition, holding the pressure measuring part 3 by solidified injection material in the bore 1 is avoided. It may be expedient to provide a predetermined breaking point between the pressure measuring part 3 and the packer 7, which enables a separation of the pressure measuring part 3 and the pipe end part 4 when a certain tensile load is reached. In this way, the pressure measuring part 3 can also be removed from the borehole 5 when the packer 7 is stuck in the borehole 1 and can no longer be moved out of it.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Fluid Mechanics (AREA)
  • Structural Engineering (AREA)
  • Agronomy & Crop Science (AREA)
  • Soil Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geophysics (AREA)
  • Measuring Fluid Pressure (AREA)

Claims (11)

1. Procédé destiné à déterminer la pression d'injection produite lors d'injections dans le domaine de la construction et dans lequel la pression du fluide à injecter est mesurée, caractérisé en ce que la mesure de la pression s'effectue, à l'intérieur du conduit d'amenée (2,4,14) pour le fluide à injecter, en un endroit 8 qui, observé dans le sens d'écoulement (A) du fluide à injecter, se trouve devant la garniture d'étanchéité (7) qui obture l'espace annulaire (6) entre le conduit d'amenée (4) et la paroi (1a) entourant ce dernier.
2. Procédé selon la revendication 1, caractérisé en ce que la mesure de la pression s'effectue au voisinage de la garniture d'étanchéité (7).
3. Dispositif destiné à déterminer la pression d'injection en cas d'injections dans le domaine de la construction et comprenant un manomètre pour mesurer la pression du fluide à injecter, caractérisé en ce que le manomètre (16) mesurant la pression à l'intérieur du conduit d'amenée (2, 4, 14) pour le fluide à injecter est disposé en un endroit (8) qui, observé dans le sens d'écoulement (A) du fluide à injecter, se trouve devant la garniture d'étanchéité (7) qui obture l'espace annulaire (6) entre le conduit d'amenée (4) et la paroi (1a) entourant ce dernier.
4. Dispositif selon la revendication 3, caractérisé en ce que l'endroit de mesure de pression (8) est situé au voisinage de la garniture d'étanchéité (7).
5. Dispositif selon la revendication 3 ou 4, caractérisé en ce que le manomètre comporte au moins un capteur de pression (16) qui en ce qui concerne la pression est en communication avec l'intérieur du conduit d'amenée (2, 4, 14).
6. Dispositif selon la revendication 5, caractérisé en ce que le conduit d'amenée (2, 4, 14) comporte une chambre de mesure (10) dans laquelle est située la partie (16a) du capteur de pression (16) qui est soumise à la pression.
7. Dispositif selon la revendication 6, caractérisé en ce que la chambre de mesure (10) comporte une chicane (13) pour faire tourbillonner le produit à injecter amené.
8. Dispositif selon la revendication 6 ou 7, caractérisé en ce que, observée dans le sens d'écoulement (A), l'ouverture d'entrée (11) de la chambre de mesure (10) est décalée latéralement par rapport à l'ouverture de sortie (12) de cette dernière.
9. Dispositif selon la revendication 7 ou 8, caractérisé en ce que la chicane est une surface déviatrice (13) pour le fluide à injecter entrant dans la chambre de mesure (10), laquelle surface déviatrice est formée de préférence par une partie (13) de la paroi de la chambre de mesure (10) qui s'étend de l'ouverture d'entrée (11) à l'ouverture de sortie (12).
10. Dispositif selon l'une quelconque des revendications 6 à 9, caractérisé en ce que la partie (16a), soumise à la pression, du capteur de pression (16) est disposée, pour un observateur regardant dans le sens d'écoulement (A), latéralement par rapport à l'ouverture d'entrée (11).
11. Dispositif selon l'une quelconque des revendications 3 à 10, caractérisé en ce qu'il est prévu entre le lieu de mesure (8) et la garniture d'étanchéité (7) un endroit de rupture nominal qui réagit de préférence lorsqu'une contrainte de traction déterminée est dépassée.
EP81106472A 1980-09-15 1981-08-20 Procédé et dispositif pour la mesure d'une pression d'injection dans une fondation Expired EP0047878B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81106472T ATE16302T1 (de) 1980-09-15 1981-08-20 Verfahren und vorrichtung zum ermitteln des injektionsdruckes bei baulichen injektionen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH6893/80 1980-09-15
CH6893/80A CH652437A5 (de) 1980-09-15 1980-09-15 Verfahren und vorrichtung zum ermitteln des injektionsdruckes bei baulichen injektionen.

Publications (3)

Publication Number Publication Date
EP0047878A2 EP0047878A2 (fr) 1982-03-24
EP0047878A3 EP0047878A3 (en) 1983-11-23
EP0047878B1 true EP0047878B1 (fr) 1985-10-30

Family

ID=4316710

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81106472A Expired EP0047878B1 (fr) 1980-09-15 1981-08-20 Procédé et dispositif pour la mesure d'une pression d'injection dans une fondation

Country Status (5)

Country Link
US (1) US4386531A (fr)
EP (1) EP0047878B1 (fr)
AT (1) ATE16302T1 (fr)
CH (1) CH652437A5 (fr)
DE (1) DE3172772D1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4687055A (en) * 1986-04-07 1987-08-18 Leggett Henry H Wire-line controlled down-hole shut-in tool for wells
US4828023A (en) * 1988-01-19 1989-05-09 Eastern Oil Tools Pte, Ltd. Mechanical latching device operated by dead weight and tension
US4883119A (en) * 1988-01-19 1989-11-28 Eastern Oil Tools Pte Ltd. Mechanical latching device operated by dead weight and tension
AU613452B2 (en) * 1988-11-22 1991-08-01 Tatarsky Gosudarstvenny Nauchno-Issledovatelsky I Proektny Institut Neftyanoi Promyshlennosti Method of casing the production seam in a well
DE3900270A1 (de) * 1989-01-07 1990-07-12 Heidelberger Druckmasch Ag Vorrichtung zur positionserfassung
FR2644842B1 (fr) * 1989-03-22 1996-06-14 Inst Francais Du Petrole Methode et dispositif de diagraphie de production en puits eruptif
GB2279758B (en) * 1993-07-06 1997-01-22 Corry Kevin A A pressure testing device
CN104612625B (zh) * 2014-10-31 2018-05-29 河南理工大学 一种用于低渗煤层气相压裂钻孔的封孔装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2189919A (en) * 1936-07-18 1940-02-13 Standard Oil Dev Co Method and apparatus for formation pressure testing
US2277898A (en) * 1940-04-26 1942-03-31 Thomas A Andrew Means for measuring flow in wells
US2979134A (en) * 1955-05-20 1961-04-11 Phillips Petroleum Co Core hole testing apparatus
US3323361A (en) * 1963-08-13 1967-06-06 Schlumberger Technology Corp Methods and apparatus for analyzing well production
FR1403857A (fr) * 1964-05-15 1965-06-25 Soletanche Obturateur pour l'injection du ciment dans un forage destiné à la consolidation du terain ou d'un massif de maçonnerie
US3417827A (en) * 1967-01-09 1968-12-24 Gulf Research Development Co Well completion tool
US3478584A (en) * 1967-12-26 1969-11-18 Mobil Oil Corp Method and apparatus for obtaining pressure build-up data in pumping wells
US4013123A (en) * 1974-09-30 1977-03-22 Chevron Research Company Hydraulically actuated wire line apparatus
SE407604B (sv) * 1975-04-11 1979-04-02 Cavallin Christer Injekteringsanordning

Also Published As

Publication number Publication date
ATE16302T1 (de) 1985-11-15
EP0047878A3 (en) 1983-11-23
US4386531A (en) 1983-06-07
EP0047878A2 (fr) 1982-03-24
CH652437A5 (de) 1985-11-15
DE3172772D1 (en) 1985-12-05

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