EP2594734B1 - Protection de sonde d'outil d'acquisition de données de puits - Google Patents

Protection de sonde d'outil d'acquisition de données de puits Download PDF

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Publication number
EP2594734B1
EP2594734B1 EP11290550.0A EP11290550A EP2594734B1 EP 2594734 B1 EP2594734 B1 EP 2594734B1 EP 11290550 A EP11290550 A EP 11290550A EP 2594734 B1 EP2594734 B1 EP 2594734B1
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EP
European Patent Office
Prior art keywords
probe
tip
guard
support
longitudinal axis
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.)
Active
Application number
EP11290550.0A
Other languages
German (de)
English (en)
Other versions
EP2594734A1 (fr
Inventor
Pierre Mouget
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.)
Services Petroliers Schlumberger SA
Schlumberger Holdings Ltd
Prad Research and Development Ltd
Schlumberger Technology BV
Original Assignee
Services Petroliers Schlumberger SA
Schlumberger Holdings Ltd
Prad Research and Development Ltd
Schlumberger Technology BV
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 Services Petroliers Schlumberger SA, Schlumberger Holdings Ltd, Prad Research and Development Ltd, Schlumberger Technology BV filed Critical Services Petroliers Schlumberger SA
Priority to EP11290550.0A priority Critical patent/EP2594734B1/fr
Priority to US14/353,770 priority patent/US20140290350A1/en
Priority to PCT/US2012/063764 priority patent/WO2013078000A1/fr
Publication of EP2594734A1 publication Critical patent/EP2594734A1/fr
Application granted granted Critical
Publication of EP2594734B1 publication Critical patent/EP2594734B1/fr
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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
    • E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
    • E21B47/017—Protecting measuring instruments
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining

Definitions

  • Oil and gas explorations and/or productions rely on well logging, a process of taking well measurements in order to evaluate a well throughout its various life-cycle phases, including drilling (e.g., logging-while-drilling or measurement-while-drilling), wireline logging, testing, completion, production, and abandonment phases.
  • drilling e.g., logging-while-drilling or measurement-while-drilling
  • wireline logging e.g., wireline logging, testing, completion, production, and abandonment phases.
  • Measurements are often made of the fluid moving in the well, where the fluid may include mixtures of oil, water, gas, and particulate in various proportions.
  • Measurements of local fluid properties in oil wells often include electrical resistivity and optical reflectivity, among others.
  • the probes utilized for these measurements include relatively delicate tips with diameters tapering from about 1 millimeter to about 50 micrometers, for example. Due to the sensitivity of the tips, there is often an increased risk of tip damage, during conveyance within the well or from debris in the fluid flowing across the tip, for example.
  • US 2003/084716 A1 relates to instruments for taking measurements from wells and boreholes and describes a two-wire cable going from the surface unit to a down-hole unit.
  • This cable physically supports a down-hole string of modules wherein a module may include a casing and a sensor which is exposed to the water outside the casing, through a window, for the purpose of sensing the particular parameter as measured by the sensor.
  • US 2011/061473 A1 relates to groundwater evaluation tools and describes a liquid tip detection probe comprising: a drive point adapted for insertion into a waterbed; an elongated body attached to the drive point; a particulate filter removably connected to the elongated body; one or more sensors in the elongated body located within the particulate filter; and a sample tube comprising a first end and a second end, wherein the first end of the sample tube is connected to a sampling system and the second end of the sample tube is located within the particulate filter and proximal to the one or more sensors.
  • US 5 351 532 A describes a sub-surface exploration probe comprising: a probe housing having a surface which is exposed to the sub-surface fluid; a chemical detection chamber for containing a solvent in which the chemical is soluble; a filter having a first side positioned relative to the probe housing to contact the sub-surface fluid, the filter having a second side positioned relative to the probe housing to contact solvent within the housing, the filter allowing the chemical to permeate from the sub-surface fluid into solvent within the housing; a radiant energy source positioned relative to the chemical detection chamber to direct radiant energy into the chemical detection chamber; and a sensor positioned relative to the chemical detection chamber to measure radiant energy within the chemical detection chamber and thereby determine solvent chemical concentration.
  • WO 00/43812 A1 relates to a formation tester that reduces the contamination caused bv borehole fluids in recovered formation fluids and describes a hydraulic guard ring surrounding a probe tube to isolate the probe from the borehole fluid.
  • the guard ring is provided with its own flow line and sample chamber, separate from the flow line and the sample chamber of the probe. By maintaining the pressure in the guard ring at or slightly below the pressure in the probe tube, most of the fluid drawn into the probe will be connate formation fluid.
  • Some embodiments relate to a probe guard to help decrease risk of probe damage during conveyance and data logging while promoting probe responsiveness.
  • the probe guard is utilized in association with well data acquisition tools, such as well reservoir evaluation tools, or well drilling tools, such as logging- or measuring-while-drilling tools.
  • Some embodiments relate to a probe assembly for use with a well data acquisition tool, the probe assembly including a probe and a probe guard.
  • the probe includes a body and a tip extending from the body along a longitudinal axis of the tip to a terminal end.
  • the tip defines a length and a surface area along the length and is configured for sensing one or more well characteristics.
  • the probe guard extends about the tip of the probe and protects up to 50% of the surface area of the tip from a flow that is angularly offset from the longitudinal axis of the tip of the probe.
  • Some embodiments relate to securing a probe guard about a tip of a probe.
  • the probe extends from a probe body, along a longitudinal axis, and to a terminal end.
  • the probe tip defines a length and a surface area along the length and is configured for sensing one or more well characteristics.
  • the probe guard is extended about the tip of the probe such that up to 50% of the surface area of the tip is protected from a flow that is angularly offset from the longitudinal axis of the probe tip.
  • FIG. 1 shows an example of a well data acquisition tool 10 that can be deployed into a well 12 as part of a well production logging operation.
  • the well 12 can be inclined or horizontal with the tool 10 being lowered into the well 12 in a compact state and then expanded to engage the walls of the well 12.
  • the tool 10 may be optionally connected to the surface (or other desired location) by a rod, a cable, or other coupling means (not shown). While the coupling means are optionally utilized for conveying data from the tool 10 to the desired location, in addition or as an alternative the tool 10 can optionally include telemetry means for conveying data to the desired location.
  • the tool 10 includes a body 20 and an expansion assembly 22 connected to the body 20.
  • the expansion assembly 22 includes a first arm 24 and a second arm 26, the first and second arms 24, 26 being configured to articulate with each other and with the body 20.
  • the body 20 is supported on the lower wall of the well 12.
  • the arms 24, 26 are in shape of a "V" located in a vertical plane passing through a longitudinal axis of the well 12.
  • a plurality of probe assemblies 28, such as electrical resistivity probes/sensors or optical reflectivity probes/sensors, are located on the tool 10, such as on the first arm 24 and the body 20.
  • the tool 10 can be same as or similar to those made by Schlumberger Ltd. under the trade name "Flow Scanner”.
  • the tool 10 can be same as or similar to those made by Schlumberger Ltd. under the trade name "FloView Holdup Measurement Tool”.
  • the probe assemblies 28 can be configured for sensing one or more well characteristics.
  • the probe assemblies 28 can optionally include one or more probes that are same as or similar to those made by Schlumberger Ltd. under the trade name "FloView,” "GHOST,” or others.
  • the plurality of probe assemblies 28 may include a probe assembly 28A, such as that shown schematically in Fig. 2 .
  • probe assemblies 28, 28A are described in association with well production logging tools, any of a variety of well data acquisition tools may employ the probe assemblies 28, 28A, such as any tools associated with one or more of drilling (e.g., logging-while-drilling or measurement-while-drilling), wireline logging, testing, completion, production, and abandonment phases.
  • drilling e.g., logging-while-drilling or measurement-while-drilling
  • wireline logging e.g., wireline logging, testing, completion, production, and abandonment phases.
  • FIG. 2 is a top view
  • FIG. 3 is a side view
  • FIG. 4 is an isometric view of the probe assembly 28A, according to some embodiments.
  • the probe assembly 28A includes a probe 50, a probe guard 52, and a support 54.
  • the probe 50 includes a body 60 and a tip 62.
  • the probe 50 can optionally be an electrical, resistivity probe or sensor, where the tip 62 senses electrical impedance of fluid touching the tip 62 in order to, for example, distinguish water, which is low-impedance, from high-impedance oil and gas.
  • the probe 50 can be an optical, reflectivity probe or sensor that is sensitive to a fluid's index of refraction.
  • the body 60 can optionally be elongate (e.g., about 2 to about 6 cm long overall, although other dimensions are contemplated) and cylindrical, defining one or more outer diameters (e.g., about 5 mm to about 20 mm in diameter, although other dimensions are contemplated).
  • the body 60 may optionally house electrical, optical, or other components 66.
  • the tip 62 can be relatively small and configured for measuring tiny droplets of fluid as the fluid flows past the tip 62.
  • the tip 62 is elongate (e.g., about 1 cm to about 3 cm long overall, although other dimensions are contemplated) and is relatively thin.
  • the tip 62 is cylindrical, having a continuous diameter or tapering from a first diameter (e.g., about 0.1 mm to about 1 mm) to a second diameter (e.g., about 0.050 mm to about 0.005 mm), although other dimensions are contemplated).
  • the tip 62 extends from the body 60 and defines a terminal end 68.
  • the probe guard 52 can be secured about at least a portion of the probe 50. As shown in FIGS. 2-4 , the probe guard 52 defines a first end 70, a second end 72, and an intermediate portion 74 and extends over the body 60 and the tip 62 of the probe 50 and then beyond the tip 62.
  • the probe guard 52 can be formed by an elongate member that is helically-shaped, such as a piece of wire stock that has been suitably formed.
  • the elongate member of the probe guard 52 may optionally have a substantially circular cross-section, although a variety of cross-sections (e.g., square, triangular, octagonal, diamond, or others) are contemplated. As shown in FIGS.
  • the probe guard 52 has a helical shape with a variable pitch - the angle at which the helix progresses longitudinally changes along a longitudinal axis Y of the helix, or in different terms, tangent lines at different points along the helix are at a variable angle to the longitudinal axis Y of the helix.
  • the probe guard 52 can have a helical shape that is characterized by a minimum pitch (i.e., the tangent line that corresponds to an axial location corresponding to the terminal end 68 of the tip 62).
  • the probe guard 52 may have a helical shape with a constant radius (r), such that when viewed from the end, the probe guard 52 has a circular profile ( FIG. 5 ).
  • the helical shape of the probe guard 52 may have a variable radius (r), such that when viewed from the end, the probe guard 52 has a non-circular profile, such as an elliptical ( FIG. 6 ) or other profile.
  • the probe guard 52 may have a discontinuously varying radius (r) such that when viewed from the end, the probe guard 52 has a rectangular, diamond, or other end profile (not shown).
  • the support 54 can be formed as part of the tool 10, such as part of the first arm 24 as shown in FIG. 1 .
  • the support 54 can define an inner face 78 and include one or more mounting features 80 for maintaining the probe 50 and the probe guard 52 as desired.
  • the mounting features 80 may optionally include hooks, clamps, welds, fasteners, or other means for securing the probe 50 and the probe guard 52 to the inner face 78 of the support 54.
  • assembly of the probe 50, the probe guard 52, and the support 54 can include securing the probe 50 to the support 54 at a desired orientation with respect to flow F (illustrated, by way of example, as an arrow in FIG. 1 and as two arrows in FIG.2 with one at a first, slanted angle and the other at a second, perpendicular angle).
  • the probe guard 52 can be secured about the probe 50, including the probe tip 62.
  • the first end 70 of the probe guard 52 can be secured to the probe 50 (e.g., the body 60) using one or more mounting features 80 (e.g., a spot weld), the intermediate portion 74 of the probe guard 52 can be secured to the support 54 using one or more of the mounting features 80 (e.g., a spot weld), and the second end 72 of the probe guard 52 can be secured to the support 54 using one or more of the mounting features 80 (e.g., a spot weld). As shown in FIGS. 2-4 , in some embodiments, the second end 72 of the probe guard 52 can be secured at a location on the support 54 that is located beyond the terminal end 68 of the tip 62. Greater or fewer locations for fixing the probe guard 52 are contemplated.
  • mounting features 80 e.g., a spot weld
  • the intermediate portion 74 of the probe guard 52 can be secured to the support 54 using one or more of the mounting features 80 (e.g., a spot weld)
  • the probe guard 52 may be mounted such that the tip 62 of the probe 50 is spaced from the support 54 by a desired distance - e.g., to help allow flow to pass between the tip 62 and the support 54.
  • the probe guard 52 may define a longitudinal axis Y that is coaxial with the longitudinal axis X of the tip 62 such that the terminal end 68 of the tip 62 is located centrally within the probe guard 52.
  • the probe guard 52 may extend about the probe 50 at a varying distance from the inner face 78 of the support 54.
  • the terminal end 68 of the tip 62 may be located adjacent a portion of the probe guard 52 that is at a maximum distance Dmax from the inner face 78 of the support 54 ( FIG. 3 ).
  • liquid flow F passes the probe 50 and measurements or other information regarding the flow F of liquid can be gathered using the probe tip 62.
  • the probe guard 52 can leave a majority of the surface area of the tip 62 exposed to the flow F that is offset from the longitudinal axis X of the tip 62.
  • the probe guard 52 can be configured to leave over 50%, over 60%, over 70%, over 80%, over 90%, over 95%, over 98%, or over 99% of the surface area of the tip 62 exposed to the flow F that is offset from the longitudinal axis X of the tip 62.
  • the probe guard 52 can be configured to leave from 50% to 99%, from 80% to 90%, almost 100%, or some other percentage of the surface area of the tip 62 exposed to the flow F that is offset from the longitudinal axis X of the tip 62.
  • the probe guard 52 helps provide responsiveness while protecting the tip 62 by configuring the probe guard 52 with a minimum pitch and radius that promotes the flow F to the tip 62 while providing sufficient structure to help deflect debris, to help prevent the probe tip 62 from striking the well wall during conveyance or other positioning, or otherwise protect the tip 62 from physical contact with unwanted objects.
  • the helical shape can have a relatively larger pitch distal of the tip 62 (toward the second end 72) and a relatively larger pitch proximal of the tip 62 (toward the first end 70).
  • the probe guard 52 can include a plurality of interconnected turns with adjacent turns defining a pitch of the probe guard 52 where the pitch decreases around the probe tip 62 and increases proximally and distally of the probe tip 62.
  • the probe guard 52 may be configured such that the helical shape of the probe guard 52 distal to the terminal end 68 of the probe tip 62 extends through one half of a turn and in a coiling direction (e.g., right handed) which is selected to help avoid masking the probe tip 62 and is configured proximally to the probe tip 62 to help limit downstream flow restriction and facilitate flow evacuation, although a variety of other configurations and features are contemplated.
  • a coiling direction e.g., right handed
  • FIG. 7 shows a schematic, side view of another probe assembly 128A including a guard 152 extending about a probe tip 162 of a probe 150, according to some embodiments.
  • the probe guard 152 can leave a majority of the surface area of the tip 162 exposed to flow F1 that is offset from the longitudinal axis X1 of the probe tip 162.
  • the probe guard 152 can include a plurality of interconnected turns 200 with adjacent turns defining a pitch of the probe guard 152. As shown, the pitch decreases around a terminal end 168 of the probe tip 162 and increases proximally and distally of the probe tip 162.
  • the probe guard 152 can optionally be secured to the probe 150 and a support 154 by mounting features (not shown) in a similar manner to that described in association with the probe assemblies 28, 28A.
  • the probe guard 152 can optionally be formed of one or more elongate members (e.g., wire stock material). As shown, the probe guard 152 defines a maximum distance from an inner face 178 of the support 154 adjacent to the probe tip 162, and in particular the terminal end 168.

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  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mining & Mineral Resources (AREA)
  • Geophysics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Surgical Instruments (AREA)
  • Sampling And Sample Adjustment (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)

Claims (15)

  1. Ensemble de sonde (28, 28A, 128A) destiné à être utilisé avec un outil d'acquisition de données de puits (10) comprenant :
    une sonde (50, 150) comprenant un corps (60, 160) et une pointe (62, 162) s'étendant à partir du corps (60, 160) le long d'un axe longitudinal (X, X1) de la pointe (62, 162) à une extrémité terminale (68, 168), la pointe (62, 162) définissant une longueur et une surface le long de la longueur et étant configurée pour détecter une ou plusieurs caractéristiques de puits ; et
    une protection de sonde (52, 152) s'étendant autour de la pointe (62, 162) de la sonde (50, 150), la protection de sonde (52, 152) protégeant jusqu'à 50 % de la surface de la pointe (62, 162) d'un flux (F, F1) qui est angulairement décalé de l'axe longitudinal (X, X1) de la pointe (62, 162) de la sonde (50, 150).
  2. Ensemble de sonde (28, 28A) selon la revendication 1, dans lequel la protection de sonde (52) comprend un élément de forme hélicoïdale.
  3. Ensemble de sonde (28, 28A) selon l'une quelconque des revendications précédentes, dans lequel la protection de sonde (52) est formée avec un fil de forme hélicoïdale.
  4. Ensemble de sonde (28, 28A) selon l'une quelconque des revendications précédentes, dans lequel la protection de sonde (52) est formée par un élément allongé ayant une section transversale sensiblement circulaire.
  5. Ensemble de sonde (28, 28A) selon l'une quelconque des revendications précédentes, dans lequel la protection de sonde (52) a une forme hélicoïdale avec un pas variable.
  6. Ensemble de sonde (28, 28A) selon l'une quelconque des revendications précédentes, dans lequel la protection de sonde (52) a une forme hélicoïdale avec un rayon constant.
  7. Ensemble de sonde (28, 28A) selon l'une quelconque des revendications 1 à 5, dans lequel la protection de sonde (52) a une forme hélicoïdale avec un rayon variable.
  8. Ensemble de sonde (28, 28A) selon l'une quelconque des revendications précédentes, dans lequel la protection de sonde (52) a une forme hélicoïdale définissant un axe longitudinal (Y) qui est coaxial avec l'axe longitudinal (X) de la pointe (62) de la sonde (50).
  9. Ensemble de sonde (28, 28A, 128A) selon l'une quelconque des revendications précédentes, comprenant en outre un support (54, 154) maintenant la sonde (50, 150) et la protection de sonde (52, 152) de sorte que la pointe (62, 162) de la sonde (50, 150) est espacée du support (54, 154).
  10. Ensemble de sonde (28, 28A, 128A) selon l'une quelconque des revendications 1 à 8, comprenant en outre un support (54, 154) maintenant la sonde (50, 150), le support (54, 154) définissant une face (78, 178) qui est positionnée vers la sonde (50, 150), et la protection de sonde (52, 152) s'étendant le long de la sonde (50, 150) à une distance variable de la face du support (54, 154).
  11. Ensemble de sonde (28, 28A, 128A) selon la revendication 10, dans lequel l'extrémité terminale (68, 168) de la pointe (62, 162) est positionnée de manière adjacente à une partie de la protection de sonde (52, 152) qui est à une distance maximum de la face du support (54, 154).
  12. Procédé comprenant la fixation d'une protection de sonde (52, 152) autour d'une pointe (62, 162) d'une sonde (50, 150) s'étendant à partir d'un corps de sonde (60, 160), le long d'un axe longitudinal, et jusqu'à une extrémité terminale (68, 168), la pointe de sonde (62, 162) définissant une longueur et une surface le long de la longueur et étant configurée pour détecter une ou plusieurs caractéristiques de puits, dans lequel la protection de sonde (52, 152) est étendue autour de la pointe (62, 162) de la sonde (50, 150) de sorte que jusqu'à 50 % de la surface de la pointe (62, 162) est protégée d'un flux (F, F1) qui est angulairement décalé de l'axe longitudinal (X, X1) de la pointe de sonde (62, 162).
  13. Procédé selon la revendication 12, dans lequel la protection de sonde (52) a une forme hélicoïdale et la protection de sonde (52) est fixée autour de la pointe (62) de la sonde (50) de sorte qu'un axe longitudinal (Y) de la forme hélicoïdale est coaxial avec l'axe longitudinal (X) de la pointe de sonde (62).
  14. Procédé selon la revendication 12 ou 13, comprenant en outre la fixation de la sonde (50, 150) à un support (54, 154) définissant une face qui est positionnée vers la sonde (50, 150) de sorte que la protection de sonde (52, 152) s'étend le long de la pointe de sonde (62, 162) pour définir une distance variable par rapport à la face du support (54, 154).
  15. Procédé selon la revendication 14, comprenant en outre la fixation d'une partie de la protection de sonde (52, 152) qui est à une distance maximum de la face du support (54, 154) adjacente à l'extrémité terminale (68, 168) de la pointe (62, 162).
EP11290550.0A 2011-11-21 2011-11-21 Protection de sonde d'outil d'acquisition de données de puits Active EP2594734B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP11290550.0A EP2594734B1 (fr) 2011-11-21 2011-11-21 Protection de sonde d'outil d'acquisition de données de puits
US14/353,770 US20140290350A1 (en) 2011-11-21 2012-11-07 Well Data Acquisition Tool Probe Guard
PCT/US2012/063764 WO2013078000A1 (fr) 2011-11-21 2012-11-07 Protection de sonde d'outil d'acquisition de données de puits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11290550.0A EP2594734B1 (fr) 2011-11-21 2011-11-21 Protection de sonde d'outil d'acquisition de données de puits

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Publication Number Publication Date
EP2594734A1 EP2594734A1 (fr) 2013-05-22
EP2594734B1 true EP2594734B1 (fr) 2017-03-29

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EP11290550.0A Active EP2594734B1 (fr) 2011-11-21 2011-11-21 Protection de sonde d'outil d'acquisition de données de puits

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US (1) US20140290350A1 (fr)
EP (1) EP2594734B1 (fr)
WO (1) WO2013078000A1 (fr)

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Publication number Priority date Publication date Assignee Title
WO2018134411A1 (fr) 2017-01-23 2018-07-26 Francisco Albero S.A.U. Encre conductrice étirable

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US1085750A (en) * 1912-12-23 1914-02-03 James A Mcmichael Guard for incandescent lamps.
US3470744A (en) * 1966-01-14 1969-10-07 John E Lindberg Temperature detection sensor
US5351532A (en) * 1992-10-08 1994-10-04 Paradigm Technologies Methods and apparatus for making chemical concentration measurements in a sub-surface exploration probe
US6843119B2 (en) * 1997-09-18 2005-01-18 Solinst Canada Limited Apparatus for measuring and recording data from boreholes
US6016191A (en) * 1998-05-07 2000-01-18 Schlumberger Technology Corporation Apparatus and tool using tracers and singles point optical probes for measuring characteristics of fluid flow in a hydrocarbon well and methods of processing resulting signals
US6301959B1 (en) * 1999-01-26 2001-10-16 Halliburton Energy Services, Inc. Focused formation fluid sampling probe
GB2383136B (en) * 2001-12-14 2004-01-14 Schlumberger Holdings Flow characteristic measuring apparatus and method
US8616275B2 (en) * 2009-09-14 2013-12-31 Ronald J. Paulsen Groundwater evaluation tools and methods of groundwater evaluation
AU2010305146B2 (en) * 2009-10-05 2015-02-05 National Oilwell Varco Denmark I/S A flexible unbonded oil pipe system with an optical fiber sensor inside

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EP2594734A1 (fr) 2013-05-22
US20140290350A1 (en) 2014-10-02
WO2013078000A1 (fr) 2013-05-30

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