EP0048342B1 - Procédé et dispositif pour fournir un fluide sous pression qui est pompé sous une pression variable - Google Patents
Procédé et dispositif pour fournir un fluide sous pression qui est pompé sous une pression variable Download PDFInfo
- Publication number
- EP0048342B1 EP0048342B1 EP81106473A EP81106473A EP0048342B1 EP 0048342 B1 EP0048342 B1 EP 0048342B1 EP 81106473 A EP81106473 A EP 81106473A EP 81106473 A EP81106473 A EP 81106473A EP 0048342 B1 EP0048342 B1 EP 0048342B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- value
- time interval
- fact
- medium
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000012530 fluid Substances 0.000 title 1
- 238000002347 injection Methods 0.000 claims abstract description 28
- 239000007924 injection Substances 0.000 claims abstract description 28
- 238000011156 evaluation Methods 0.000 claims description 17
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 description 6
- 238000005259 measurement Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Images
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
- E21B47/00—Survey of boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
Definitions
- the present invention relates to a method and a device for dispensing a pressure medium at at least one consumer point with a pressure not exceeding a desired value according to the preamble of claim 1 and claim 7, respectively.
- a device for injecting an injection material into several boreholes in which a flow control valve and a measuring device for measuring the pressure downstream of this control valve are arranged in the outlet of a distribution chamber which is connected to a pump device is.
- the measured value signals are fed to a control unit, on which the pressure measured in the outgoing lines is displayed.
- the control unit generates control signals for the flow control valves based on the received measured value signals.
- the pump device consisting of piston pumps now conveys the injection material with rapidly changing pressures. These pressure fluctuations are probably compensated somewhat by the distribution chamber, but the pressure of the injection material flowing through the pressure measuring devices is still subject to considerable fluctuations.
- the present invention is based on the object of creating a method and a device of the type mentioned at the outset, which makes it possible to ensure at all times, even when the pressure of the pressure medium conveyed by the pump device changes rapidly, that the pressure of the consumer point supplied media never exceeds a maximum permissible value.
- the measured value signals supplied by the pressure measuring device change continuously in accordance with the pressure curve in the pressure medium. For this reason, the measured value signals cannot be used directly to generate control signals for the pump device.
- a pressure quantity representative of this time period is obtained.
- an actual variable is then generated which is used for the subsequent actual value / setpoint comparison.
- the actual size is preferably derived in each case from the highest pressure value determined for a time period and the actual size determined in the previous time period.
- the pressure of this pressure medium is advantageously measured in the area of the consumer point.
- FIG. 1 schematically shows a device for supplying an injection medium to an injection site 2 lying in a borehole 1.
- the injection material is processed in a mixer 3 and fed to a storage container 4 provided with an agitator.
- the injection medium is conveyed from this storage container 4 by means of a pump device 5 via a feed line 6 to the injection site 2.
- the injection medium emerging from the outlet 7 of the feed line 6 is pressed into the material surrounding the borehole 1 in a known manner.
- the pump device 5. has a delivery piston 8 which is moved back and forth in the direction of arrow A by means of a controllable hydraulic drive 9.
- a delivery piston 8 which is moved back and forth in the direction of arrow A by means of a controllable hydraulic drive 9.
- the injection medium is conveyed through the feed line 6 with rapidly changing pressures.
- the injection site 2 is sealed in a known manner by means of a packer 10. Seen from the injection point 2, behind the packer 10, there is a pressure measuring device 11 in the feed line 6, which has a measurement transducer 12 that is in flow connection with the inside of the feed line 6. With regard to the structure and mode of operation of the pressure measuring device 11, reference is made to the European patent application No. 81 106472.4 (EP-A-0047878), which was simultaneously filed with the applicant.
- the electrical measured value signals generated by the measurement transducer 12 and corresponding to the pressure in the feed line 6 are fed via a signal line 13 to a control and display unit 14, in which the to be described, these measured value signals are processed.
- the control and display unit 14 is provided with a line recorder and a display unit 16. In the control and display unit 14, control signals are also generated in a manner to be described, which are fed via a signal line 17 to an actuator 18, which effects a regulation of the delivery rate and the pressure of the pump device 5 in a manner known per se.
- FIG. 2 shows the device for processing the measured value signals and for generating control signals in the form of a block diagram.
- the measurement transducer 12 is connected to a supply device 19 for a two-wire transducer.
- the measured value signals supplied by the measured value converter -12 via the signal line 13 reach a signal evaluation unit 21 via a measuring amplifier and signal converter 20.
- This signal evaluation unit 21 is connected on the output side to the line recorder 15 and the display unit 16 and on the other hand to a preamplifier 22.
- a controller unit 23 is connected to this preamplifier 22. Via the preamplifier 22, the controller unit 23 is further connected to a setpoint input part 24. The output of the controller unit 23 is connected to the actuator 18 via the signal line 17.
- the comparison value which is used for the derivation of the actual quantity corresponds to the actual quantity which was determined in the manner described for the previously examined time period.
- the actual value derived in each case can correspond, for example, to the determined highest pressure value or the comparison value, depending on which of these values is larger. However, it is also conceivable for an actual variable to be formed which corresponds to the average of the highest pressure value and the comparison value.
- the signal evaluation unit 21 determines on the basis of a comparison of the newly determined actual size and the previously obtained actual size that a pressure change has occurred in the injection medium, the signal evaluation unit 21 monitors this pressure change during a certain period of time in order to be able to determine whether this pressure change has actually occurred or only is due to a short-term influencing factor.
- the corresponding actual variable is fed from the signal evaluation unit 21 to the controller unit 23 after amplification in the preamplifier 22.
- the actual variable generated by the signal evaluation unit 21 further serves for registration and display of the pressure by the line recorder 15 and the display unit 16.
- the controller part 23 which operates as a 3-point controller, a comparison is made of the actual variable obtained from the signal evaluation unit 21 with a target variable which has been entered in the target value input part 24 and has been amplified in the preamplifier 22.
- the control part 23 On the basis of this actual value / target value comparison, the control part 23 generates control signals in a manner known per se, which are fed to the actuator 18 via the signal line 17. The latter now acts on the pump device 5 in a known manner in the sense of regulating the pressure and the delivery rate.
- the setpoint value entered by means of the setpoint input part 24, which corresponds to the maximum permissible pressure of the injection medium at the injection site, can be a constant value or change according to a predetermined, arbitrary course of time.
- the pump device is regulated in a manner similar to that described. It goes without saying that the pump device 5 can also be designed differently than shown.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Geophysics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Soil Sciences (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Measuring Fluid Pressure (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Claims (13)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT81106473T ATE16301T1 (de) | 1980-09-16 | 1981-08-20 | Verfahren und vorrichtung zum abgeben eines druckmediums, das von einer pumpeneinrichtung mit sich aenderndem druck gefoerdert wird. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH6924/80 | 1980-09-16 | ||
CH6924/80A CH648423A5 (de) | 1980-09-16 | 1980-09-16 | Verfahren und vorrichtung zum abgeben eines druckmediums von einer pumpeneinrichtung an eine verbraucherstelle mit einem einen sollwert nicht uebersteigenden druck. |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0048342A2 EP0048342A2 (fr) | 1982-03-31 |
EP0048342A3 EP0048342A3 (en) | 1983-11-23 |
EP0048342B1 true EP0048342B1 (fr) | 1985-10-30 |
Family
ID=4317197
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP81106473A Expired EP0048342B1 (fr) | 1980-09-16 | 1981-08-20 | Procédé et dispositif pour fournir un fluide sous pression qui est pompé sous une pression variable |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0048342B1 (fr) |
AT (1) | ATE16301T1 (fr) |
CH (1) | CH648423A5 (fr) |
DE (1) | DE3172773D1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010036411A1 (de) * | 2010-07-15 | 2012-01-19 | Geowatt Ag | Verfahren zur Hinterfüllung eines Bohrlochs und Anordnung dafür |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2084885A5 (fr) * | 1970-03-19 | 1971-12-17 | Atlas Copco Ab | |
US3665945A (en) * | 1971-02-03 | 1972-05-30 | M & J Valve Co | Valve control system and method |
GB1449852A (en) * | 1973-08-10 | 1976-09-15 | Coppen J D | Control of fluid pumps |
SE407604B (sv) * | 1975-04-11 | 1979-04-02 | Cavallin Christer | Injekteringsanordning |
US4161782A (en) * | 1977-12-23 | 1979-07-17 | Otis Engineering Corporation | Microprocessor computerized pressure/temperature/time down-hole recorder |
-
1980
- 1980-09-16 CH CH6924/80A patent/CH648423A5/de not_active IP Right Cessation
-
1981
- 1981-08-20 AT AT81106473T patent/ATE16301T1/de not_active IP Right Cessation
- 1981-08-20 EP EP81106473A patent/EP0048342B1/fr not_active Expired
- 1981-08-20 DE DE8181106473T patent/DE3172773D1/de not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010036411A1 (de) * | 2010-07-15 | 2012-01-19 | Geowatt Ag | Verfahren zur Hinterfüllung eines Bohrlochs und Anordnung dafür |
WO2012007556A2 (fr) | 2010-07-15 | 2012-01-19 | Geowatt Ag | Procédé pour remblayer un trou de forage et système correspondant |
DE102010036411B4 (de) * | 2010-07-15 | 2012-03-22 | Geowatt Ag | Verfahren zur Hinterfüllung eines Bohrlochs und Anordnung dafür |
Also Published As
Publication number | Publication date |
---|---|
ATE16301T1 (de) | 1985-11-15 |
DE3172773D1 (en) | 1985-12-05 |
EP0048342A2 (fr) | 1982-03-31 |
EP0048342A3 (en) | 1983-11-23 |
CH648423A5 (de) | 1985-03-15 |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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