US3792429A - Logging-while-drilling tool - Google Patents

Logging-while-drilling tool Download PDF

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Publication number
US3792429A
US3792429A US00267851A US3792429DA US3792429A US 3792429 A US3792429 A US 3792429A US 00267851 A US00267851 A US 00267851A US 3792429D A US3792429D A US 3792429DA US 3792429 A US3792429 A US 3792429A
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United States
Prior art keywords
valve
tool
housing
drilling
rotor
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Expired - Lifetime
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US00267851A
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English (en)
Inventor
B Patton
M Prior
J Sexton
V Slover
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ExxonMobil Oil Corp
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Mobil Oil Corp
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    • 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
    • E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
    • E21B47/14—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
    • E21B47/18—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid, e.g. mud pressure pulse telemetry
    • 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
    • E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
    • E21B47/14—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
    • E21B47/18—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid, e.g. mud pressure pulse telemetry
    • E21B47/20—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid, e.g. mud pressure pulse telemetry by modulation of mud waves, e.g. by continuous modulation
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/26—Amines
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/30—Heterocyclic compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
    • C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral salts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
    • C10M2219/082—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
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    • C10M2219/085—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms containing carboxyl groups; Derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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    • C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
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    • C10M2219/087—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Derivatives thereof, e.g. sulfurised phenols
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
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    • C10M2219/087—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Derivatives thereof, e.g. sulfurised phenols
    • C10M2219/088—Neutral salts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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    • C10M2219/089—Overbased salts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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    • C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
    • C10M2219/104—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring containing sulfur and carbon with nitrogen or oxygen in the ring
    • C10M2219/108—Phenothiazine
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
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    • C10M2223/042—Metal salts thereof
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
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    • C10M2223/043—Ammonium or amine salts thereof
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2227/00—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions
    • C10M2227/06—Organic compounds derived from inorganic acids or metal salts
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    • C—CHEMISTRY; METALLURGY
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    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/08—Hydraulic fluids, e.g. brake-fluids

Definitions

  • ABSTRACT A logging-while-drilling tool which is adapted to be positioned within the drill string of a well drilling apparatus.
  • the tool has a turbinelike, signalgenerating valve which opens and closes at a rate to generate a pressure wave signal in the drilling fluid which is representative of a measured downhole condition.
  • the tool includes a means for both biasing the valve toward an open position and holding it there when the tool is not operating and for canceling or substantially reducing the torque loads applied to the drive train of the tool when the tool is operating.
  • This means comprises a magnetic unit which develops a magnetic torque characteristic which opposes the normal hydraulic torque characteristics of the valve.
  • the present invention relates to a logging-whiledrilling tool and more particularly relates to a loggingwhile-drilling tool which has a means both to bias the signal-generating valve of said tool toward an open position when the tool is not operating and to reduce the torque loads which are applied to the drive train of said tool when the tool is operating.
  • logging-whiledrilling systems Several such systems have been proposed and are commonly referred to as logging-whiledrilling" systems.
  • logging-while-drilling systems one of the major problems exists in finding a means for telemetering the information from a downhole location to the surface and having it arrive in a meaningful condition.
  • a turbinelike, signalgenerating valve is positioned in the circulating mud path near the drill bit.
  • the valve is comprised of a stator and a rotor, each having openings therethrough which when aligned allow full flow of drilling mud through the valve. When the openings are misaligned, the flow therethrough is at least partially blocked.
  • a motor in the tool is energized in response to a measured piece of information to open and close the valve at a rate producing a pressure wave in the mud which is representative of said measured information.
  • the signal-generating valve normally develops certain hydraulic torque characteristics as a function of the flow rate through the valve which tend to force the valve to its closed position. This creates problems as drilling mud is pumped down the drill string and through the valve before the tool begins operation and the motor begins to power the valve. Due to the composition of standard drilling mud, solid material is normally present therein which tends to strain out of the mud as it is forced through restricted passages in the valve which are present when the valve is in its closed position. This solid material may continue to collect in the valve and does present a real problem in that it may plug the valve to such an extent that the'valve cannot be opened by the motor when operation of the tool is commenced.
  • the present invention provides an improved loggingwhile-drilling tool of the type described above which includes a means for biasing and maintaining the signalgenerating valve in an open position when the tool is not operating.
  • the means of the present invention also cancels or substantially reduces torque loads normally applied to the drive train of the tool during operation.
  • the tool of the present invention is comprised of a housing which is mounted within the central passage of a drill collar.
  • This drill collar is adapted to be connected into and form a portion of a drill string of an earth drilling apparatus.
  • the tool housing carries a rotary turbinelike, signal-generating valve which is positioned so that at least a portion of the drilling fluid flowing through the drill string will pass through the valve.
  • the valve is comprised of a stator which is affixed to the housing and a rotor which is carried by a rotating drive train extending from a motor within the housing. Both the rotor and stator have openings therein which when aligned (i.e., open position) allow full flow through the valve and when misaligned (i.e., closed position) block at least a portion of the flow therethrough.
  • the present invention includes a means for biasing the valve toward an open position and for holding it there when the tool is not in operation.
  • This means is comprised of a magnetic unit which has a magnet attached to the tool housing and a cooperating magnetic element attached to the drive train of the tool. The unit develops magnetic torque characteristics which are greater than the hydraulic torque characteristics of the valve when the tool is not operating so that the valve will be biased toward and held in its open position when the tool is not operating.
  • the hydraulic torque characteristic of the valve is an increasing function of the flow rate through the valve. Since the maximum flow rate will normally occur during operation of the tool, the torque characteristic of the unit is designed to be roughly equal to the hydraulic torque at this operating flow rate. By positioning the unit so that the magnetic torque is out of phase with the hydraulic torque, the resulting torque applied to the drive train at any time during operation will be negligible.
  • FIG. 1 is a schematic elevation of a rotary drilling apparatus including in vertical section a well containing a drill string in which the present invention is employed;
  • FIG. 2 is a schematic elevation, partly in section, of a portion of the drill string of FIG. 1, having a loggingwhile-drilling tool mounted therein in accordance with the present invention
  • FIG. 3 is a detailed sectional view of one modification of the upper portion of FIG. 2 illustrating the present invention
  • FIG. 4 is a sectional view taken along section line 44 of FIG. 3;
  • FIG. 5 is a sectional view taken along section line 55 of FIG. 3.
  • FIG. 1 discloses the present invention as used in a loggingwhile-drilling system which is incorporated in a rotary drilling apparatus.
  • a derrick 21 is disposed over a well 22 being formed in the earth 23 by rotary drilling.
  • a drill string 24 is suspended within the well and has a drill bit 27 at its lower end and a kelly 28 at its upper end.
  • a rotary table 29 cooperates with kelly 28 to rotate string 24 and bit 27.
  • a swivel 33 is attached to the upper end of kelly 28 which in turn is supported by hook 32 from a traveling block (not shown).
  • This arrangement not only supports the drill string 24 in an operable position within well 22 but also forms a rotary connection between the source of circulating drilling fluid, such as mud, and the drill string 24. It should be understood that mud as used throughout this disclosure is intended to cover those fluids normally used in rotary drilling operations.
  • the pump 36 transfers drilling mud from a source, such as pit 34, through desurger 37 into mudline 38.
  • Desurger 37 is adapted to reduce the pulsating effect of pump 36 as is well known in the art.
  • the mud flows through mudline 38, flexible hose 39, swivel 33, drill string 24, and exits through openings (not shown) in drill bit 27 to pass outwardly into well 22.
  • the mud then circulates upward carrying drill cuttings with it through the annulus between the well and drill string 24 to the surface of the earth 23.
  • well head 41 is secured to casing which is cemented in the well 22.
  • Pipe 42 is connected to casing 40 for returning the mud to pit 34.
  • a logging-while-drilling tool 46 is located in drill collar 26 which forms a part of the lower end of drill string 24 near bit 27.
  • Tool 46 has a motor-actuated, signalgenerating, rotary valve which periodically interrupts at least a portion of the drilling fluid flowing through the valve to thereby generate a pressure wave in the fluid which is representative of a measured downhole condition.
  • This is the type of logging-while-drilling tool which is disclosed and described in U.S. Pat. No. 3,309,656 to John K. Godbey.
  • the present invention is directed to a means for holding the valve in an open position when the tool is not operating and for reducing torque loads on the drive train of the tool when the tool is operating.
  • a brief description of the entire tool 46 will be helpful.
  • a transducer means which is capable of measuring a desired downhole condition and converting the measurement to an electrical signal is positioned downhole on or near tool 46.
  • transducer means 54 e.g., a strain guage
  • the signal from transducer means 54 is applied to electronic package 53 which is sealed in compartment 48 of tool housing 46a.
  • electronic package 53 See U.S. Pat. No. 3,309,656. Circuitry in package 53, in response to the signal from means 54,
  • signal-generating valve 60 is comprised of a rotor 61 and a stator 62.
  • Rotor 61 is fixed on shaft 63 of drive train 56 by means of tapered bushing 64 and nut 65.
  • Shaft 63 is journaled in housing 46a by means of bearings 66.
  • Seal 67 around shaft 63 seals the interior of housing 46a against the influx of drill mud.
  • both rotor 61 and stator 62 contain the same number of identical spaced slots, 61a, 62a, respectively (FIG. 5), each of the slots being of equal area.
  • Valve 60 is in an open position when the slots are aligned and is in a closed position when the slots are completely misaligned.
  • Gap 70 is that distance between the bottom surface of rotor 61 and the top surface of stator 62.
  • Bypass 71 (FIGS. 3 and 5) is that distance between the outer periphery of rotor 61 and the wall of the conduit adjacent the rotor.
  • the outer diameter of stator 62 is effectively the same as the interior diameter of the conduit.
  • valve 60 When there is flow through valve 60 but before generator 50 develops sufficient power to operate tool 46, the torque characteristics of valve 60 tend to force it to its closed position. Therefore, when drill string 24 is lowered into the well and mud is flowed through tool 46 to rotate turbine 52 at a speed sufficient to generate the necessary power for the tool, the mud must flow through the restrictive passages in valve 60 formed by bypass 71 and gap 70. Since drilling mud normally contains solid materials which tend to strain out within the restricted passages of the closed valve, a serious problem of plugging exists. If valve 60 becomes plugged to the extent that it cannot be opened when motor 55 commences operation, the entire drill string 24 has to be removed to unplug valve 60 before tool 46 can operate.
  • valve 60 hydraulic torque loads are applied to drive train 56 as motor 55 rotates valve 60 between its open and closed positions during operation of tool 46. These constantly reversing torque loads can cause considerable wear on the drive train which may lead to any early failure of tool 46.
  • the present invention provides a means for tool 46 which both biases valve 60 toward its open position and holds it there when tool 46 is not operating and, at the same time, cancels or substantially reduces the torque loads normally applied to drive train 56 during operation of tool 46.
  • the means of the present invention is preferably a magnetic unit 75 which is comprised of magnet 76 and magnetic element 77.
  • Magnetic element 77 as illustrated, is of cylindrical shape having a recessed midportion and raised ends 77a and 77b and is affixed to shaft 63 for rotation therewith by means of key 80 and set screw 81.
  • Magnet 76 has a configuration which mirrors that of magnetic element 77. Magnet 76 may be constructed in one piece although it is illustrated as being comprised of three members, 76a, 76b, 760.
  • Member 76a and end 77a are toothed" as shown in FIG. 5 to provide attracting poles 78, 79, respectively, between magnet 76 and magnetic element 77.
  • both 76a and 77a have poles which correspond to the number of slots in both rotor 61 and stator 62 (FIG. 4) thereby providing ten stable positions for valve 60 in which it will be in an open position.
  • the magnetic unit 75 is comprised of material, e.g., Alnico, which will retain magnetism for long periods .
  • while housing 46a is comprised of a relatively nonmagnetic material, e.g., Monel.
  • unit 75 preferably having a keeper shaft (not shown) through the central passage in magnetic element 77 is placed in an electrical coil and magnetized.
  • Unit 75 now held together by magnetic force, is then slipped over shaft 63 which in turn displaces the keeper from element 77 as unit 75 is moved into place over key 80.
  • Set screw 81 is tightened through hole 85 in member 76b to further affix magnetic element 77 to shaft 63.
  • shaft 63, unit 75, and upper housing element 46b are positioned within housing 46a, and 46b is secured thereto.
  • Shaft 63 which carries entire unit 75, is rotated to align magnet 76 with openings in housing 46a so screws 86 (only one shown) can be inserted to secure magnet 76 to housing 46a.
  • Stator 62 is rotated on threads on upper housing element 46b so that the slots in stator 62 are aligned with the slots in rotor 61, thereby positioning valve 60 in an open position.
  • Set screw 87 is tightened to secure stator 62 against rotation during operation of tool 46. It can now be seen that when the poles of 76a and 77a are aligned in any of ten possible positions, valve 60 will be in an open position.
  • valve 60 To insure that valve 60 will be held in its open position when tool 46 is not operating, it is only necessary to design unit 75 so the magnetic torque of same exceeds the hydraulic torque characteristics of valve 60 which exist when tool 46 is not operating.
  • the present invention is designed to cancel or substantially reduce the hydraulic torques normally applied to drive train 56 while tool 46 is operating.
  • valve 60 The hydraulic torque characteristics of valve 60 increase as a function of the flow rate through the valve so that in tool 46, maximum flow rate through valve 60 will normally occur during actual drilling operations, at which time tool 46 will be operating. Therefore by designing unit 75 for this flow rate, there will always be sufficient magnetic torque to hold valve 60 open until tool 46 begins operation.
  • the nominal flow rate of mud which will be used during a particular drilling operation is generally known and varies very little unless emergencies arise during drilling.
  • the hydraulic torque characteristics of valve 60 which occur at this nominal flow rate can be determined by bench tests and the magnetic torque characteristic of unit 75 is designed to roughly equal those torques of valve 60 during these operating conditons.
  • the magnetic torque applied to drive train 56 will be 180 out of phase with the hydraulic torque applied to drive train 56 by the operation of valve 60. If the two torques are substantially equal, the resulting torque applied to drive train 56 at any time duringoperation will be negligible. Also, by effectively canceling the torques on drive train 56, motor will be operating under essentially no-Ioad conditions, thereby allowing less powerful motors to be used in tool 46.
  • Motor 55 is designed to have sufficient power to overcome any positive hydraulic or magnetic torques which might normally occur during drilling due to changes in flow rate of the mud. However, even at varying flow rates, the reduction in applied torques on drive train 56 due to the counterbalancing effects of the hydraulic and magnetic torques is highly beneficial.
  • magnetic torque is a function of the opposed surface areas of poles 78 and 79.
  • the surface area of said poles can be varied and the desired magnetic torque of unit 75 can be established.
  • more than one unit 75, 75a (FIG. 2) having the same or different magnetic torques, can be stacked on shaft 63 whereby the individual torque characteristics of each unit are combined to shape a torque curve having the specific characteristics desired for a specific tool 46.
  • a logging-while-drilling tool comprising:
  • a housing adapted to be positioned in a drill string of an earth drilling apparatus wherein drilling fluid which is circulated through the drill string will flow around said housing;
  • a rotary valve positioned on said housing so that at least a portion of the drilling fluid flowing through the drill string will flow through said valve whereby a pressure wave signal will be generated in the drilling fluid as said valve opens and closes in response to a downhole condition measured by said tool, said valve comprising:
  • a rotor having openings therethrough mounted on a drive train extending from said housing;
  • stator on said housing having openings therethrough which when aligned with said openings in said rotor will allow full flow through said valve and when misaligned will at least partially block flow through said valve;
  • said means for applying said torque to said valve is magnetic.
  • said magnetic means comprises a magnetic unit having at least two elements which magnetically at tract each other, one of said elements secured to said drive train for rotation therewith and another of said elements secured against rotation in said housing at a point adjacent said one element.
  • a logging-while-drilling tool comprising:
  • a housing adapted to be positioned in a drill string of an earth drilling apparatus wherein drilling fluid which is circulated through the drill string will flow around said housing;
  • a rotary valve positioned on said housing so that at least a portion of the drilling fluid flowing through the drill string will flow through said valve whereby a pressure wave signal will be generated in the drilling fluid as said valve opens and closes in response to a downhole condition measured by said tool, said valve comprising:
  • a rotor having openings therethrough mounted on a drive train extending from said housing;
  • stator on said housing having openings therethrough which when aligned with said openings in said rotor will allow full flow through said valve and when misaligned will at least partially block flow through said valve;
  • said magnetic means comprises at least two magnetic units, each of said units having at least two elements which magnetically attract each other, one of said elements of each of said units secured to said drive train for rotation therewith and another of said elements of each of said units secured against rotation in said housing at a point adjacent their respective one elements, whereby the combined magnetic torque characteristic of said units equals the magnetic torque characteristic desired for said tool.
  • a logging-while-drilling tool comprising:
  • a housing adapted to be positioned in a drill string of an earth drilling apparatus wherein drilling fluid which is circulated through the drill string will flow around said housing;
  • a rotary valve positioned on said housing so that at least a portion of the drilling fluid flowing through the drill string will flow through said valve whereby a pressure wave signal will be generated in the drilling fluid as said valve opens and closes in response to a downhole condition measured by said tool, said valve comprising:
  • a rotor having openings therethrough mounted on a drive train extending from said housing;
  • stator on said housing having openings therethrough which when aligned with said openings in said rotor will allow full flow through said valve and when misaligned will at least partially block flow through said valve;
  • magnetic means having at least two elements which magnetically attract each other, one of said elements secured to said drive train for rotation therewith and another of said elements secured against rotation in said housing at a point adjacent said one element, said magnetic means having torque characteristics essentially equal to but out of phase to the hydraulic torque which is normally applied to said drive train during operation of said tool.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Remote Sensing (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Geophysics (AREA)
  • Acoustics & Sound (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
  • Drilling And Boring (AREA)
US00267851A 1972-06-30 1972-06-30 Logging-while-drilling tool Expired - Lifetime US3792429A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US26785172A 1972-06-30 1972-06-30

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US (1) US3792429A (nl)
AU (1) AU462604B2 (nl)
CA (1) CA978175A (nl)
DK (1) DK148006C (nl)
GB (1) GB1378871A (nl)
IE (1) IE37486B1 (nl)
MY (1) MY7500158A (nl)
NL (1) NL170449C (nl)
NO (1) NO133914C (nl)
OA (1) OA04435A (nl)

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3909776A (en) * 1973-10-01 1975-09-30 Amoco Prod Co Fluidic oscillator seismic source
US3949354A (en) * 1974-05-15 1976-04-06 Schlumberger Technology Corporation Apparatus for transmitting well bore data
US3997867A (en) * 1973-09-17 1976-12-14 Schlumberger Technology Corporation Well bore data-transmission apparatus
USRE30055E (en) * 1974-05-15 1979-07-24 Schlumberger Technology Corporation Apparatus for transmitting well bore data
US4675852A (en) * 1983-11-22 1987-06-23 Nl Industries, Inc. Apparatus for signalling within a borehole while drilling
US4785300A (en) * 1983-10-24 1988-11-15 Schlumberger Technology Corporation Pressure pulse generator
US5073877A (en) * 1986-05-19 1991-12-17 Schlumberger Canada Limited Signal pressure pulse generator
US5237540A (en) * 1992-08-21 1993-08-17 Schlumberger Technology Corporation Logging while drilling tools utilizing magnetic positioner assisted phase shifts
US5375098A (en) * 1992-08-21 1994-12-20 Schlumberger Technology Corporation Logging while drilling tools, systems, and methods capable of transmitting data at a plurality of different frequencies
US5586083A (en) * 1994-08-25 1996-12-17 Harriburton Company Turbo siren signal generator for measurement while drilling systems
WO2003069120A2 (en) 2002-02-13 2003-08-21 Halliburton Energy Services, Inc. Dual channel downhole telemetry
US20030155156A1 (en) * 2002-01-22 2003-08-21 Livingstone James I. Two string drilling system using coil tubing
US20040079553A1 (en) * 2002-08-21 2004-04-29 Livingstone James I. Reverse circulation directional and horizontal drilling using concentric drill string
US20050002276A1 (en) * 2003-07-03 2005-01-06 Pathfinder Energy Services, Inc. Matching layer assembly for a downhole acoustic sensor
US20050001517A1 (en) * 2003-07-03 2005-01-06 Pathfinder Energy Services, Inc. Composite backing layer for a downhole acoustic sensor
US20050000279A1 (en) * 2003-07-03 2005-01-06 Pathfinder Energy Services, Inc. Acoustic sensor for downhole measurement tool
US6892829B2 (en) 2002-01-17 2005-05-17 Presssol Ltd. Two string drilling system
US20050178586A1 (en) * 2004-02-12 2005-08-18 Presssol Ltd. Downhole blowout preventor
US20050224228A1 (en) * 2004-02-11 2005-10-13 Presssol Ltd. Method and apparatus for isolating and testing zones during reverse circulation drilling
US20050252661A1 (en) * 2004-05-13 2005-11-17 Presssol Ltd. Casing degasser tool
US7090018B2 (en) 2002-07-19 2006-08-15 Presgsol Ltd. Reverse circulation clean out system for low pressure gas wells
US20060185430A1 (en) * 2003-07-03 2006-08-24 Pathfinder Energy Services, Inc. Piezocomposite transducer for a downhole measurement tool
US20080186805A1 (en) * 2007-02-01 2008-08-07 Pathfinder Energy Services, Inc. Apparatus and method for determining drilling fluid acoustic properties
US20090038851A1 (en) * 2007-07-02 2009-02-12 Extreme Engineering Ltd. Spindle for mud pulse telemetry applications
US20090285054A1 (en) * 2008-05-19 2009-11-19 Haoshi Song Downhole Telemetry System and Method
US20100154531A1 (en) * 2008-12-19 2010-06-24 Pathfinder Energy Services, Inc. Caliper Logging Using Circumferentially Spaced and/or Angled Transducer Elements
US20150247403A1 (en) * 2012-11-06 2015-09-03 Evolution Engineering Inc. Measurement while drilling fluid pressure pulse generator
US20160010449A1 (en) * 2013-02-27 2016-01-14 Evolution Engineering Inc. Fluid pressure pulse generating apparatus and method of using same

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US3997867A (en) * 1973-09-17 1976-12-14 Schlumberger Technology Corporation Well bore data-transmission apparatus
US3909776A (en) * 1973-10-01 1975-09-30 Amoco Prod Co Fluidic oscillator seismic source
US3949354A (en) * 1974-05-15 1976-04-06 Schlumberger Technology Corporation Apparatus for transmitting well bore data
USRE30055E (en) * 1974-05-15 1979-07-24 Schlumberger Technology Corporation Apparatus for transmitting well bore data
US4785300A (en) * 1983-10-24 1988-11-15 Schlumberger Technology Corporation Pressure pulse generator
US4675852A (en) * 1983-11-22 1987-06-23 Nl Industries, Inc. Apparatus for signalling within a borehole while drilling
US5073877A (en) * 1986-05-19 1991-12-17 Schlumberger Canada Limited Signal pressure pulse generator
US5237540A (en) * 1992-08-21 1993-08-17 Schlumberger Technology Corporation Logging while drilling tools utilizing magnetic positioner assisted phase shifts
US5375098A (en) * 1992-08-21 1994-12-20 Schlumberger Technology Corporation Logging while drilling tools, systems, and methods capable of transmitting data at a plurality of different frequencies
US5740126A (en) * 1994-08-25 1998-04-14 Halliburton Energy Services, Inc. Turbo siren signal generator for measurement while drilling systems
US5586083A (en) * 1994-08-25 1996-12-17 Harriburton Company Turbo siren signal generator for measurement while drilling systems
US6892829B2 (en) 2002-01-17 2005-05-17 Presssol Ltd. Two string drilling system
US20030155156A1 (en) * 2002-01-22 2003-08-21 Livingstone James I. Two string drilling system using coil tubing
US6854534B2 (en) 2002-01-22 2005-02-15 James I. Livingstone Two string drilling system using coil tubing
WO2003069120A2 (en) 2002-02-13 2003-08-21 Halliburton Energy Services, Inc. Dual channel downhole telemetry
US7090018B2 (en) 2002-07-19 2006-08-15 Presgsol Ltd. Reverse circulation clean out system for low pressure gas wells
US20040079553A1 (en) * 2002-08-21 2004-04-29 Livingstone James I. Reverse circulation directional and horizontal drilling using concentric drill string
US20040104052A1 (en) * 2002-08-21 2004-06-03 Livingstone James I. Reverse circulation directional and horizontal drilling using concentric coil tubing
US7204327B2 (en) 2002-08-21 2007-04-17 Presssol Ltd. Reverse circulation directional and horizontal drilling using concentric drill string
US7066283B2 (en) 2002-08-21 2006-06-27 Presssol Ltd. Reverse circulation directional and horizontal drilling using concentric coil tubing
US7036363B2 (en) 2003-07-03 2006-05-02 Pathfinder Energy Services, Inc. Acoustic sensor for downhole measurement tool
US7513147B2 (en) 2003-07-03 2009-04-07 Pathfinder Energy Services, Inc. Piezocomposite transducer for a downhole measurement tool
US6995500B2 (en) 2003-07-03 2006-02-07 Pathfinder Energy Services, Inc. Composite backing layer for a downhole acoustic sensor
US20050000279A1 (en) * 2003-07-03 2005-01-06 Pathfinder Energy Services, Inc. Acoustic sensor for downhole measurement tool
US7075215B2 (en) 2003-07-03 2006-07-11 Pathfinder Energy Services, Inc. Matching layer assembly for a downhole acoustic sensor
US20050001517A1 (en) * 2003-07-03 2005-01-06 Pathfinder Energy Services, Inc. Composite backing layer for a downhole acoustic sensor
US20060185430A1 (en) * 2003-07-03 2006-08-24 Pathfinder Energy Services, Inc. Piezocomposite transducer for a downhole measurement tool
US20050002276A1 (en) * 2003-07-03 2005-01-06 Pathfinder Energy Services, Inc. Matching layer assembly for a downhole acoustic sensor
US20080099195A1 (en) * 2004-02-11 2008-05-01 Presssol Ltd. Method and apparatus for isolating and testing zones during reverse circulation drilling
US20050224228A1 (en) * 2004-02-11 2005-10-13 Presssol Ltd. Method and apparatus for isolating and testing zones during reverse circulation drilling
US7343983B2 (en) 2004-02-11 2008-03-18 Presssol Ltd. Method and apparatus for isolating and testing zones during reverse circulation drilling
US20080289878A1 (en) * 2004-02-12 2008-11-27 Presssol Ltd. Downhole blowout preventor
US20050178586A1 (en) * 2004-02-12 2005-08-18 Presssol Ltd. Downhole blowout preventor
US8408337B2 (en) 2004-02-12 2013-04-02 Presssol Ltd. Downhole blowout preventor
US20050252661A1 (en) * 2004-05-13 2005-11-17 Presssol Ltd. Casing degasser tool
US20080186805A1 (en) * 2007-02-01 2008-08-07 Pathfinder Energy Services, Inc. Apparatus and method for determining drilling fluid acoustic properties
US7587936B2 (en) 2007-02-01 2009-09-15 Smith International Inc. Apparatus and method for determining drilling fluid acoustic properties
US20090038851A1 (en) * 2007-07-02 2009-02-12 Extreme Engineering Ltd. Spindle for mud pulse telemetry applications
US8634274B2 (en) 2007-07-02 2014-01-21 Schlumberger Technology Corporation Spindle for mud pulse telemetry applications
US8174929B2 (en) * 2007-07-02 2012-05-08 Schlumberger Technology Corporation Spindle for mud pulse telemetry applications
US8151905B2 (en) 2008-05-19 2012-04-10 Hs International, L.L.C. Downhole telemetry system and method
US20090285054A1 (en) * 2008-05-19 2009-11-19 Haoshi Song Downhole Telemetry System and Method
US8117907B2 (en) 2008-12-19 2012-02-21 Pathfinder Energy Services, Inc. Caliper logging using circumferentially spaced and/or angled transducer elements
US20100154531A1 (en) * 2008-12-19 2010-06-24 Pathfinder Energy Services, Inc. Caliper Logging Using Circumferentially Spaced and/or Angled Transducer Elements
US20150247403A1 (en) * 2012-11-06 2015-09-03 Evolution Engineering Inc. Measurement while drilling fluid pressure pulse generator
US9500075B2 (en) * 2012-11-06 2016-11-22 Evolution Engineering Inc. Measurement while drilling fluid pressure pulse generator
US20160010449A1 (en) * 2013-02-27 2016-01-14 Evolution Engineering Inc. Fluid pressure pulse generating apparatus and method of using same
US9528371B2 (en) * 2013-02-27 2016-12-27 Evolution Engineering Inc. Fluid pressure pulse generating apparatus and method of using same

Also Published As

Publication number Publication date
IE37486B1 (en) 1977-08-03
NL170449B (nl) 1982-06-01
NL7303988A (nl) 1974-01-02
AU5657473A (en) 1974-12-12
CA978175A (en) 1975-11-18
DK148006B (da) 1985-01-28
IE37486L (en) 1973-12-30
GB1378871A (en) 1974-12-27
NO133914B (nl) 1976-04-05
DK148006C (da) 1985-09-02
AU462604B2 (en) 1975-06-26
MY7500158A (en) 1975-12-31
NO133914C (nl) 1976-07-14
OA04435A (fr) 1980-03-15
NL170449C (nl) 1982-11-01

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