EP3091175A1 - Dispositif de mesure - Google Patents

Dispositif de mesure Download PDF

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Publication number
EP3091175A1
EP3091175A1 EP15167011.4A EP15167011A EP3091175A1 EP 3091175 A1 EP3091175 A1 EP 3091175A1 EP 15167011 A EP15167011 A EP 15167011A EP 3091175 A1 EP3091175 A1 EP 3091175A1
Authority
EP
European Patent Office
Prior art keywords
pressure
piston
pressure compensation
spring
preceeding
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.)
Withdrawn
Application number
EP15167011.4A
Other languages
German (de)
English (en)
Inventor
Salim Saif Basher Al Salmi
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.)
Geomax Energy Systems - Oman LLC
Original Assignee
Geomax Energy Systems - Oman LLC
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 Geomax Energy Systems - Oman LLC filed Critical Geomax Energy Systems - Oman LLC
Priority to EP15167011.4A priority Critical patent/EP3091175A1/fr
Priority to PCT/EP2016/060346 priority patent/WO2016180785A1/fr
Priority to US15/572,596 priority patent/US20180119543A1/en
Publication of EP3091175A1 publication Critical patent/EP3091175A1/fr
Withdrawn legal-status Critical Current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
    • E21B47/00—Survey of boreholes or wells
    • E21B47/10—Locating fluid leaks, intrusions or movements
    • 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
    • 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
    • E21B47/07—Temperature

Definitions

  • the invention relates to a downhole device for measuring the fluid flow in a wellbore comprising a housing, a power supply, a motor control, a motor coupled to a spinner and sensors for measuring the viscosity, pressure and temperature of a fluid.
  • a production log records one or more in-situ measurements that describe the nature and behavior of fluids in or around the borehole during a production operation, including an injection operation.
  • Production logs can provide for example information about dynamic well performance and the productivity or injectivity of different zones. This information may be used to help diagnose problem wells or monitor the results of a stimulation or completion.
  • the device must be able to adapt to the pressure and temperature regime within the well and be able to obtain data when the well is flowing or shut.
  • a device as addressed above which is equipped with a pressure compensation system comprising a spring means supported by a spring holder, a piston in contact with the spring means, a pressure compensation fluid chamber and seals sealing the pressure compensation chamber against the piston.
  • the device of the invention comprises at least one sensor each for measuring relevant data within the well.
  • Relevant data are in particular data on the fluid viscosity, pressure and temperature.
  • the sensors are preferably arranged in the form of a tool string.
  • the measuring module is equipped with at least one viscosity sensor and preferably more than one pressure sensor in order to register pressure differences. Two pressure and two temperature sensors are preferred.
  • the sensors are mounted at a distance.
  • one pressure sensor is in or close to the spinner head and the other one at or close to the tail of the device. The same holds for the temperature sensors.
  • the pressure compensation system is needed when the inside and the outside pressure are different along the downhole tool.
  • the pressure compensation system is designed to create the pressure balance between the inside and outside of the tool in order to avoid a pressure difference that may cause leakage.
  • the pressure compensation fluid normally is an oil, e.g. a combustion oil.
  • the volume of the fluid will expand with the temperature increase.
  • the expanded oil will exert a pressure on to the piston within the pressure compensation system.
  • the oil pressure within the system is higher than the outside pressure and the pressure supplied to the piston is big enough to compress the spring, the oil moves the piston against the spring.
  • the piston When the oil is fully expanded, the piston will stop moving, thus acting as a pressure release valve. At this time, the pressure inside the pressure compensation chamber will equal the outside pressure. Pressure balance is reached.
  • the pressure compensation system provides a means to compensate for pressure and temperature changes within and outside the device. Predominantly the pressure compensation system is needed when moving the device downhole to the location of its operation and when tripping out the tool from the well.
  • the system provides for constant and reproducible conditions within the device. This allows the system to produce reliable data with its sensors.
  • the downhole device of the invention generally consists of a tube-like housing, which is more or less conventional, a power supply, a motor coupled to a conventional spinner, at least one sensor, and the pressure compensation system.
  • the housing is an elongate tube having the spinner at its head and a plug at its tail and the working elements inside.
  • a power supply which normally is a battery, but can also be an electrical cable reaching downhole.
  • the battery provides power to a motor for driving the spinner in the head section.
  • At least part of the sensors are arranged in the head section.
  • the device is equipped with phased pressure and temperature sensors.
  • the pressure compensation system comprises a spring means, preferably a compression spring, which is supported by a spring holder.
  • a spring guide attached to the spring holder which guides the longitudinal extension and compression of the spring.
  • the spring at it's other end, faces a piston, which is movably arranged within a ceramic sleeve.
  • the piston comprises a sealing system made up by O-rings and for U-cup rings providing a seal between the distant body and the sleeve.
  • the sealing rings seal the adjacent pressure compensation fluid chamber against the piston.
  • the chamber itself is also sealed to the head section of the device by means of sealing rings, preferably O-rings.
  • the pressure compensation fluid normally an oil
  • a filling port arranged at the wall of the housing.
  • Figure 1 is a drawing of the inventive device (1) with the housing (2), the spinner head (3) and the sealing plug (4) at the tail.
  • FIG. 2 is a sectional view of the device of fig. 1 .
  • the device is divided into two parts, the battery section B housing the battery (5) and the motor section M housing the motor control (6), the motor (7), the piston chamber (8) and the spinner head (3).
  • a battery connector (BC) isolates the battery section from the motor section. In case of any leakage in the battery section the main module will not be effected.
  • a motor connector MC forms the isolating part between the motor and the electronic elements. The motor connector separates the high pressure section (motor and spinner) from the electronics.
  • Figure 3 is a sectional view of the pressure control system (10) with a central driving shaft (9) and a compression spring (11) arranged around the driving shaft (9).
  • the compression spring supports a piston (12) also enclosing the driving shaft (9) with sealing rings (13).
  • Adjacent to the spring/piston combination (11/12) is a pressure compensation chamber PCC, which is sealed against the piston (12).
  • Figure 4 gives details of the spring/piston arrangement of fig. 3 .
  • the spring (11) arranged around the driving shaft (9) is supported by the spring holder (16) which extends along the driving shaft (9) as a guide of the spring (11).
  • the spring (11) ends at the piston (12) which itself is movable along the driving shaft (9) in a longitudinal direction of the device.
  • Sealing rings (13) in form of U-cup seals provide sealing against a ceramic sleeve (18) and the driving shaft (9).
  • the pressure compensation chamber Adjacent to the piston is the pressure compensation chamber (15) which in operation is filled with an oil, e.g. a normal combustion oil.
  • the chamber has a filling port (14), which also has a valve function. Sealing rings (17) provide tightness against housing elements.
  • a temperature rise in the pressure compensation chamber PCC results in an expansion of the oil, which drives the piston (12) in direction of the device tail.
  • compression spring (11) is compressed, until a pressure equilibrium is reached.
  • the spring expands to compensate for the diminishing volume of the cooling oil in the chamber.
  • the ceramic sleeve (18) guiding the piston (12) is pre-bonded onto the piston housing. It provides less friction on the seal rings than the piston housing and is easy to be replaced in case of damage.
  • the U-cup seals are selected because they have better sealing performance in the dynamic application comparing to regular O-rings.
  • the device of the invention is designed to help the interpretation of fluid flow and to give more reliable data on the flow rate.
  • the pressure and viscosity data may be used according to the following calculations.
  • the data obtained by the viscosity and pressure measurements are regularly more precise than the data obtained by a regular spinner measurements.

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  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Geophysics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Measuring Volume Flow (AREA)
  • Measuring Fluid Pressure (AREA)
EP15167011.4A 2015-05-08 2015-05-08 Dispositif de mesure Withdrawn EP3091175A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP15167011.4A EP3091175A1 (fr) 2015-05-08 2015-05-08 Dispositif de mesure
PCT/EP2016/060346 WO2016180785A1 (fr) 2015-05-08 2016-05-09 Dispositif de mesure
US15/572,596 US20180119543A1 (en) 2015-05-08 2016-05-09 Measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15167011.4A EP3091175A1 (fr) 2015-05-08 2015-05-08 Dispositif de mesure

Publications (1)

Publication Number Publication Date
EP3091175A1 true EP3091175A1 (fr) 2016-11-09

Family

ID=53051772

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15167011.4A Withdrawn EP3091175A1 (fr) 2015-05-08 2015-05-08 Dispositif de mesure

Country Status (3)

Country Link
US (1) US20180119543A1 (fr)
EP (1) EP3091175A1 (fr)
WO (1) WO2016180785A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108547609A (zh) * 2018-03-27 2018-09-18 中国海洋石油集团有限公司 一种投测型井下测温仪和井下循环温度测量系统
EP3404369A1 (fr) * 2017-05-17 2018-11-21 General Electric Company Capteurs à compensation de pression
US10539435B2 (en) 2017-05-17 2020-01-21 General Electric Company Pressure compensated sensors

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109185263B (zh) * 2018-10-18 2020-11-06 中国海洋石油集团有限公司 一种井下带液压系统及其平衡活塞

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080190605A1 (en) * 2007-02-12 2008-08-14 Timothy Dale Clapp Apparatus and methods of flow testing formation zones
GB2460533A (en) * 2008-06-04 2009-12-09 Weatherford Lamb Interface for deploying wireline tools with non-electric string

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080190605A1 (en) * 2007-02-12 2008-08-14 Timothy Dale Clapp Apparatus and methods of flow testing formation zones
GB2460533A (en) * 2008-06-04 2009-12-09 Weatherford Lamb Interface for deploying wireline tools with non-electric string

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3404369A1 (fr) * 2017-05-17 2018-11-21 General Electric Company Capteurs à compensation de pression
US10539435B2 (en) 2017-05-17 2020-01-21 General Electric Company Pressure compensated sensors
US11029177B2 (en) 2017-05-17 2021-06-08 Baker Hughes Holdings Llc Pressure compensated sensors
CN108547609A (zh) * 2018-03-27 2018-09-18 中国海洋石油集团有限公司 一种投测型井下测温仪和井下循环温度测量系统

Also Published As

Publication number Publication date
US20180119543A1 (en) 2018-05-03
WO2016180785A1 (fr) 2016-11-17

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