WO2016147029A1 - Procédé pour effectuer une analyse continue de l'état technique actuel d'un système de pompe submersible et sonde utilisée pour employer ce procédé - Google Patents

Procédé pour effectuer une analyse continue de l'état technique actuel d'un système de pompe submersible et sonde utilisée pour employer ce procédé Download PDF

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Publication number
WO2016147029A1
WO2016147029A1 PCT/IB2015/051920 IB2015051920W WO2016147029A1 WO 2016147029 A1 WO2016147029 A1 WO 2016147029A1 IB 2015051920 W IB2015051920 W IB 2015051920W WO 2016147029 A1 WO2016147029 A1 WO 2016147029A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
pump
liquid
pipeline
determined
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.)
Ceased
Application number
PCT/IB2015/051920
Other languages
English (en)
Inventor
Marian MAST Dr STRĄCZYŃSKI
Marian STRĄCZYŃSKI
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.)
Aplisens SA
Original Assignee
Aplisens SA
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 Aplisens SA filed Critical Aplisens SA
Priority to PL15719509T priority Critical patent/PL3271546T3/pl
Priority to PCT/IB2015/051920 priority patent/WO2016147029A1/fr
Priority to US15/559,041 priority patent/US20180094513A1/en
Priority to EP15719509.0A priority patent/EP3271546B1/fr
Publication of WO2016147029A1 publication Critical patent/WO2016147029A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • E21B47/00—Survey of boreholes or wells
    • E21B47/008—Monitoring of down-hole pump systems, e.g. for the detection of "pumped-off" conditions
    • 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
    • E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
    • E21B43/121—Lifting well fluids
    • E21B43/128—Adaptation of pump systems with down-hole electric drives
    • 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 invention relates to method for conducting on-going analysis of the current technical condition of a submersible pump system installed in a deep well and to a probe to survey of the current technical condition of such system.
  • the basic operating parameters of any submersible pump include its capacity (Q), which is the volume of liquid pumped out within a specific time unit, and lift (H), which is the pressure of pumped liquid provided in metres water column.
  • Q capacity
  • H lift
  • the submersible pump operating parameters (Q,H) facilitate determination of other parameters, such as efficiency and power consumption of the pump.
  • the existing method for conducting on-going analysis of the current technical condition of a submersible pump system with known capacity value (Q) involves approximate determination of pump lift (H R ) by adding the water surface height in the well to the pressure value measured upstream of the damper gate in a horizontal run of the pipeline which terminates the pump system.
  • the purpose of the invention was to develop a method for conducting on-going analysis of the current technical condition of an assembled (integrated) and commissioned submersible pump system.
  • the purpose meets a method by which, for a given capacity of the pump system measured at its downstream end, differential pressure is determined between the liquid pressure in the pipeline near the pump pressure port and the hydrostatic pressure of the same liquid outside of the pump and near the pump pressure port.
  • the differential pressure determined in this way is compared against the lift, which results from the known lift as a function of capacity, for the capacity value being the given capacity of the pump system for which the differential pressure has been determined.
  • comparison of the determined differential pressure to lift involves calculating the ratio of that differential pressure to that lift.
  • Another variant of the method according to the invention involves determining the differential pressure for pressure values measured at a distance to the pump pressure port equal or less than 0.15% of the pump installation depth but also equal or less than 4 meters.
  • Another variant of the method according to the invention involves determining the differential pressure by measuring the liquid pressure in the pipeline and the liquid hydrostatic pressure outside of the pump in two separate measurements in which two separate liquid electrical pressure transducers are applied and then determining the difference between the two obtained electric signals.
  • the pressure transducers feature piezo-resistive silicon sensors, isolated from the liquid being measured by a separating membrane enclosing a manometer liquid.
  • Another variant of the method according to the invention involves measuring the liquid pressure in the pipeline by connecting a pressure transducer to a port located in an intermediate ring installed in line of the pipeline, advantageously between the pump pressure port and the pipeline start section.
  • Yet another variant of the method according to the invention involves determining the liquid differential pressure with a measurement probe which houses both of the said pressure transducers connected with each other by one common body.
  • the common body is installed on the pipeline and the pressure transducer of the liquid hydrostatic pressure outside of the pump is oriented perpendicularly to flow direction in the pipeline.
  • a probe according to the invention consists of two liquid electrical pressure transducers.
  • One of the pressure transducers measures the pressure of liquid forced by the pump into the pipeline connected to the pump pressure port.
  • the other pressure transducer measures hydrostatic pressure of the liquid in which the pump is immersed.
  • Each of the two pressure transducers is housed in a separate body which features a metering orifice on one end.
  • the pressure transducer bodies are installed substantially in perpendicular against each other in a common coupling body.
  • both pressure transducers feature piezo-resistive silicon sensors isolated from the measured liquid with a separating membrane and a manometer liquid.
  • the probe also features an intermediate ring designed to be fastened between the pump pressure port and the starting section of the pipeline.
  • the intermediate ring features a port connected by a line with the metering orifice of the pump-forced liquid pressure transducer
  • the probe also features a fixture for fastening the probe to the pipeline.
  • the advantage of the invention is that it facilitates conducting on-going analysis of the current technical condition of a submersible pump system , i.e. the actual submersible pump, its pressure pipeline, and its fittings. This fact considerably improves the quality of operation of submersible pumps and submersible pump systems. Only if damage to a pump operating in a deeply submerged assembly is detected soon enough, is it possible to predict and prevent problems which are always expensive to fix.
  • the technical condition diagnosis allows the pump user to remove the damaged submersible pump immediately or stop leaks in the pressure pipeline. As a result, significant savings in electrical power consumption are made.
  • the invention effectively optimises the use of submersible pump systems.
  • Fig. 1 shows schematically cross-section of a deep well with installed submersible pump and the probe according to the invention.
  • Fig. 2 shows a magnification of vertical cross-section of the pipeline starting section which is provided with the probe according to the invention, and admits water from the pump.
  • Fig. 3 shows a partial cross-section of a part of the first pressure transducer (the pipeline liquid pressure transducer) being a component of the probe according to the invention.
  • Fig. 4 shows, in the same cross- section as provided in Fig. 3, a part of the second pressure transducer which is a component of the probe and measures hydrostatic pressure.
  • Fig. 5 shows a diagram presenting the lift vs. capacity of the pump, which is implemented in the invention embodiment.
  • the pump 1 was placed in a deep well 2 bored in an aquifer.
  • the deep well 2 depth Ls was 250 meters and the deep well diameter was 16" (ca. 406 mm).
  • the structural design of the deep well in question 2 resembled the well-known design of S5 submersibles and it included, among others, the filter 3.
  • the pump 1 was installed in the deep well 2 at the depth Lp of 223 m.
  • the pump 1 pressure port 4 was connected to the pipeline 5 with a diameter of 150 mm, featuring a throttle valve 6 installed on the pipeline surface and two pressure gauges 7 and 8 located on both sides of the throttle valve 6.
  • the end of the pipeline 5 was located over a surface reservoir 9 into which the water from the deep well 2 was pumped.
  • the water surface 10 in static conditions (10'), i.e. with non-operating submersible pump 1 was at the depth Lw' of 167 m. When the pump 1 was operating, the water surface depth was reduced (10") to Lw" of 199 m.
  • the measurement probe enabling the invention to be embodied was made of two measurement probes manufactured by APLISENS S.A. Smart depth probe type SG-25 Smart was used as hydrostatic pressure transducer 1 1 .
  • the probe had two metering orifices 12 made in the head 13, which closed the probe body 14 on one end.
  • PC28 pressure transducer was used as the pressure transducer 15 for water forced by the pump 1 into the pipeline 5.
  • the body 16 of the said pressure transducer 15 had a threaded head 17 with a metering orifice 18.
  • Both pressure transducers 1 1 and 15 featured piezo-resistive silicon sensors 19 isolated from the measured liquid by a separating membrane 20 and a manometer liquid 21.
  • the above-mentioned transducers 1 1 and 15 featured also digital electronic circuits (not shown) working with the sensors 18.
  • the body 14 and 16 ends of the pressure transducers 1 1 and 15 were installed inside a common body 22 with a watertight seal.
  • the common body 22 features known fixing assemblies 23 which facilitated fastening of the probe (1 1 , 15,22) to the pipeline 5 at the depth Hs of 228 m.
  • a cable 24 was fed out of the common body 22 in order to transmit electrical outputs from the transducers 19 to a measurement instrument assembly 25.
  • the measurement instrument assembly 25 recorded the differential pressure of 227 m H 2 0, which corresponded to the actual ongoing lift H R of the pump system.
  • the pump 1 achieved the lift H of 228 m (Fig. 5), i.e. only 1 metre above the reference value. This results in drawing the conclusion that the pump 1 is in good technical condition and the entire pump system is leak-free. Due to determining, according to the above-mentioned procedure, the actual lift H R for a submersible pump in a pump system it is possible to accurately track the current changes (run distortions) of the pump characteristics at any measured capacity Q. It is also possible to evaluate the optimum energy efficiency of the pump system.
  • the internal pressure in the pipeline 5 can be measured with the probe also at the pump pressure port 4, provided that the pressure port 4 is provided with a suitable metering orifice similar to the aforementioned orifice 27 of the intermediate ring 26, or at the pipeline 5 start section, provided that the pumped liquid can access the pressure transducer 15 in a similar way. It is essential to take measurement within the following distance from the pump pressure port: equal to or less than 0.15% of the pump installation depth and also equal to or less than 4 meters.

Landscapes

  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geophysics (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

La présente invention se rapporte à un procédé qui concerne un système de pompe comprenant une pompe submersible (1) avec une élévation connue en fonction de la capacité déterminée sur un banc d'essai, avec la pompe submersible immergée dans un liquide contenu dans un puits profond (2), et une canalisation de pression (5) avec des raccords, qui évacue le liquide pompé, et est reliée à l'orifice de pression (4) de ladite pompe submersible (1). Le procédé est caractérisé en ce que, pour une capacité donnée du système de pompe mesurée à son extrémité aval, la pression différentielle est déterminée entre la pression de liquide dans la canalisation (5) à proximité de l'orifice de pression (4) de la pompe (1) et la pression hydrostatique du même liquide à l'extérieur de la pompe (1) au niveau de l'orifice de pression de la pompe (4). La pression différentielle ainsi déterminée est ensuite comparée à l'élévation (H), qui résulte de l'élévation connue en fonction de la capacité (Q), la valeur de capacité étant la capacité donnée du système de pompage pour laquelle la pression différentielle a été déterminée. La sonde comprend deux capteurs de pression (11, 15) de la pression du liquide forcé munis de sorties électriques. L'un des transducteurs de pression (15) mesure la pression du liquide forcé par la pompe (1) dans la canalisation (5) reliée à son orifice de pression (4). L'autre transducteur de pression (11) mesure la pression hydrostatique du liquide dans lequel la pompe (1) est immergée. Chacun des transducteurs de pression (11, 15) possède un corps séparé (14, 16) et sur une extrémité de chaque corps (14, 16) se trouve un orifice de mesure (12, 18). Les corps (14, 16) des transducteurs de pression (11, 15) sont installés généralement perpendiculairement l'un à l'autre dans un corps de couplage commun (22).
PCT/IB2015/051920 2015-03-16 2015-03-16 Procédé pour effectuer une analyse continue de l'état technique actuel d'un système de pompe submersible et sonde utilisée pour employer ce procédé Ceased WO2016147029A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PL15719509T PL3271546T3 (pl) 2015-03-16 2015-03-16 Sposób diagnozowania bieżącego stanu technicznego układu pompowego pompy głębinowej i sonda do realizacji takiego sposobu
PCT/IB2015/051920 WO2016147029A1 (fr) 2015-03-16 2015-03-16 Procédé pour effectuer une analyse continue de l'état technique actuel d'un système de pompe submersible et sonde utilisée pour employer ce procédé
US15/559,041 US20180094513A1 (en) 2015-03-16 2015-03-16 Method for conducting on-going analysis of the current technical condition of a submersible pump system and a probe used for employing this method
EP15719509.0A EP3271546B1 (fr) 2015-03-16 2015-03-16 Procédé pour effectuer une analyse continue de l'état technique actuel d'un système de pompe submersible et sonde utilisée pour employer ce procédé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2015/051920 WO2016147029A1 (fr) 2015-03-16 2015-03-16 Procédé pour effectuer une analyse continue de l'état technique actuel d'un système de pompe submersible et sonde utilisée pour employer ce procédé

Publications (1)

Publication Number Publication Date
WO2016147029A1 true WO2016147029A1 (fr) 2016-09-22

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PCT/IB2015/051920 Ceased WO2016147029A1 (fr) 2015-03-16 2015-03-16 Procédé pour effectuer une analyse continue de l'état technique actuel d'un système de pompe submersible et sonde utilisée pour employer ce procédé

Country Status (4)

Country Link
US (1) US20180094513A1 (fr)
EP (1) EP3271546B1 (fr)
PL (1) PL3271546T3 (fr)
WO (1) WO2016147029A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5634522A (en) * 1996-05-31 1997-06-03 Hershberger; Michael D. Liquid level detection for artificial lift system control
WO1998005848A2 (fr) * 1996-08-01 1998-02-12 Camco International, Inc. Procede et dispositif de mesure et de regulation en fond de puits des fluide produits provenant des puits
US20150052989A1 (en) * 2013-08-20 2015-02-26 Baker Hughes Incorporated Metal Bellows Condition Monitoring System

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5634522A (en) * 1996-05-31 1997-06-03 Hershberger; Michael D. Liquid level detection for artificial lift system control
WO1998005848A2 (fr) * 1996-08-01 1998-02-12 Camco International, Inc. Procede et dispositif de mesure et de regulation en fond de puits des fluide produits provenant des puits
US20150052989A1 (en) * 2013-08-20 2015-02-26 Baker Hughes Incorporated Metal Bellows Condition Monitoring System

Also Published As

Publication number Publication date
US20180094513A1 (en) 2018-04-05
EP3271546B1 (fr) 2019-06-05
PL3271546T3 (pl) 2020-07-13
EP3271546A1 (fr) 2018-01-24

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