EP0500877B1 - Verfahren zum durchführen eines bohrvorganges - Google Patents

Verfahren zum durchführen eines bohrvorganges Download PDF

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Publication number
EP0500877B1
EP0500877B1 EP91916050A EP91916050A EP0500877B1 EP 0500877 B1 EP0500877 B1 EP 0500877B1 EP 91916050 A EP91916050 A EP 91916050A EP 91916050 A EP91916050 A EP 91916050A EP 0500877 B1 EP0500877 B1 EP 0500877B1
Authority
EP
European Patent Office
Prior art keywords
period
variation
rotation
drill
stable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP91916050A
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English (en)
French (fr)
Other versions
EP0500877A1 (de
Inventor
Henry Henneuse
Jean Sancho
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.)
Elf Exploration Production SAS
Original Assignee
Societe National Elf Aquitaine
Societe Nationale Elf Aquitaine Production SA
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Application filed by Societe National Elf Aquitaine, Societe Nationale Elf Aquitaine Production SA filed Critical Societe National Elf Aquitaine
Publication of EP0500877A1 publication Critical patent/EP0500877A1/de
Application granted granted Critical
Publication of EP0500877B1 publication Critical patent/EP0500877B1/de
Anticipated expiration legal-status Critical
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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
    • E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or 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
    • E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
    • E21B44/005—Below-ground automatic control systems

Definitions

  • the present invention relates to a method of conducting a borehole.
  • the drill string motor When drilling an oil well, the drill string motor, which is mounted to the surface, rotates at a constant speed of about 50-150 rpm. However, the friction produced between the drilling tool and the bottom of the well, or between the rods and the wall of the well, can cause slowing down or even periodic stops of the tool. Since, during this time, the motor continues to rotate at one end of the drill string, the latter tends to twist around its longitudinal axis until the force exerted is greater than the friction effect braking the tool. At this time, the drill string relaxes and the tool starts to rotate again, reaching peak rotational speeds of the order of 150 to 400 revolutions / minute. As wells often follow opposite paths, contact between the lining and the wall of the well occurs quite frequently.
  • the behavior of the tool has a significant effect on the progress of the drilling.
  • the master driller be informed of the periodic instability of the tool's rotation speed so that he can modify the drilling parameters - engine rotation speed, weight applied to the tool or the mud flow rate. - and thus ensure optimal drilling.
  • the present invention therefore relates to a method of conducting a borehole which makes it possible to provide a user, in a simple manner, with data on the state of rotation of the rod.
  • Document US-E-28,436 describes a method of conducting a borehole in which the torque applied by the motor for rotating the drill pipe is measured and in which a user is informed if the torque exceeds a threshold predetermined.
  • This process does not make it possible to signal to a user the presence, the absence or the possible presence periodic instabilities in rotation of the drill pipe so that this user can modify the drilling parameters as a function of the behavior of the drill pipe.
  • a drilling assembly comprises a mast 10 provided, in a manner known per se, with a hook 12 to which is suspended a drill string, generally represented at 14.
  • the drill string 14 comprises a tool drill 16, drill rods 18 and drill rods 20 forming an assembly called drill string.
  • the drill string 14 is rotated by a rotation table 22. Any other device can be used.
  • the rotation table 22 is provided with a rotation speed sensor 24 and a torque sensor 26 applied to the drill string 14.
  • This step is represented in FIG. 2 by:
  • the next step of the process is carried out in which the period P of the variation in the torque is calculated. Then we are led to check if this period P is constant for a predetermined number of cycles.
  • the theoretical period P th is a characteristic of the packing used. It is calculated from the natural modes of vibration in torsion of the lining. As there are several eigen modes of vibration, it follows that there are several values for P th which one can call P th,; P th2 , We therefore proceed to a comparison of the current P value with each of the predetermined theoretical values in order to see if the value P is in a range between 0.8 and 1.2 times the value of one of the theoretical values P th , If the value P is within such a range it can be deduced therefrom that there are periodic instabilities of rotational speed.
  • the system allows this fact to be reported to the master driller so that he can act and modify one or more drilling parameters.
  • the value P is not within such a range there is uncertainty regarding the behavior of the drill string.
  • the system allows this uncertain situation to be reported to the master driller so that he can modify the drilling parameters if necessary.
  • This step has two parts: calculating the percentage of tool downtime and calculating the maximum tool rotation speed.
  • The% tar tool downtime percentage is defined by the formula
  • the recovery time time during which the engine runs and the tool stopped, is the time necessary for the engine to overcome the friction between the lining and the well.
  • This time is equal to 60 x DN VR avg where DN is the number of turns of packing necessary to overcome friction. and VR avg is the average speed of rotation of the tool.
  • the propagation time is given by the expression
  • the present invention makes it possible to signal to the master-driller, in a simple manner, the presence or absence of rotational speed instabilities.
  • a set of indicators analogous to conventional lights intended to regulate road traffic, is used.
  • Any other signaling means for example auditory or graphic, can be used.
  • a green light indicates to the master driller that he can maintain the parameters of the drilling, an orange light leaves him the choice to modify the parameters, taking into account the uncertain diagnosis, and the red light indicates to him that we must act actively.
  • FIGS. 3A and 3B are two pairs of curves, at a different time scale, of the variation of the torque C and of the speed of rotation of the tool VR over time.
  • the measurements were carried out by a recording device placed at the bottom of the well. These measurements make it possible to visualize the relationship between the torque and the speed of rotation and to confirm that this relationship corresponds to the hypotheses on which the method according to the present invention is based.
  • Figure 4 shows in more detail the variation of the torque and the rotation speed.

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  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Physics & Mathematics (AREA)
  • Earth Drilling (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Discharging, Photosensitive Material Shape In Electrophotography (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Bipolar Transistors (AREA)
  • Conductive Materials (AREA)
  • Drilling And Boring (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Drilling Tools (AREA)

Claims (1)

  1. Verfahren zum Ausführen einer Bohrung, bei dem ein Werkzeug in einem Schacht durch eine Bohrstange in Drehung versetzt wird, wobei das Verfahren dazu bestimmt ist, das Vorhandensein periodischer Rotationsinstabilitäten der Bohrstange zu entdecken und anzuzeigen und die folgenden Schritte aufweist:
    - kontinuierliches Messen der Drehgeschwindigkeit des oberen Endes der Stange,
    - kontinuierliches Messen des an dieses obere Ende der Stange angelegten Drehmoments,
    dadurch gekennzeichnet, daß das Verfahren die folgenden zusätzlichen Schritte aufweist:
    - Ermitteln der Drehmomentänderung,
    - Bestimmen der Periode der Drehmomentänderung, wenn die Amplitude dieser Änderung einen vorher bestimmten Schwellenwert überschreitet,
    - Überprüfen der Stabilität dieser Periode,
    - wenn diese Periode stabil ist, Vergleich der Periode mit mindestens einer vorher bestimmten theoretischen Periode, wobei die vorher bestimmte theoretische Periode eine Eigenschaft der Bohrstange ist, die ausgehend von den Eigenwerten der Drehschwingung des Bohrstrangs berechnet wird,
    - Anzeigen der erhaltenen Ergebnisse für einen Benutzer, um das Bohren so steuern zu können, daß
    - wenn die Amplitude der Drehmomentänderung nicht den vorher bestimmten Schwellenwert überschreitet, dem Benutzer angezeigt wird, daß die Bohrparameter beibehalten werden können,
    - wenn die Periode nicht stabil ist oder die stabile Periode nicht einer vorher bestimmten theoretischen Periode entspricht, diese Bedingung dem Benutzer angezeigt wird, um es ihm zu erlauben, die Bohrparameter zu verändern, und
    - wenn die Periode stabil ist und einer vorher bestimmten theoretischen Periode entspricht, das Vorhandensein von Rotationsinstabilitäten dem Benutzer angezeigt wird, damit er aktiv eingreifen und die Bohrparameter modifizieren kann.
EP91916050A 1990-09-14 1991-09-12 Verfahren zum durchführen eines bohrvorganges Expired - Lifetime EP0500877B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9011380 1990-09-14
FR9011380A FR2666845B1 (fr) 1990-09-14 1990-09-14 Procede de conduite d'un forage.
PCT/FR1991/000721 WO1992005337A1 (fr) 1990-09-14 1991-09-12 Procede de conduite d'un forage

Publications (2)

Publication Number Publication Date
EP0500877A1 EP0500877A1 (de) 1992-09-02
EP0500877B1 true EP0500877B1 (de) 1995-02-15

Family

ID=9400335

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91916050A Expired - Lifetime EP0500877B1 (de) 1990-09-14 1991-09-12 Verfahren zum durchführen eines bohrvorganges

Country Status (11)

Country Link
US (1) US5245871A (de)
EP (1) EP0500877B1 (de)
AT (1) ATE118596T1 (de)
CA (1) CA2072138C (de)
DE (1) DE69107441T2 (de)
DK (1) DK0500877T3 (de)
ES (1) ES2071329T3 (de)
FR (1) FR2666845B1 (de)
NO (1) NO308427B1 (de)
OA (1) OA09981A (de)
WO (1) WO1992005337A1 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5679894A (en) * 1993-05-12 1997-10-21 Baker Hughes Incorporated Apparatus and method for drilling boreholes
FR2705801B1 (fr) * 1993-05-26 1995-07-28 Elf Aquitaine Procédé de contrôle de la vitesse de rotation d'une garniture de forage.
US5431046A (en) * 1994-02-14 1995-07-11 Ho; Hwa-Shan Compliance-based torque and drag monitoring system and method
US5864058A (en) * 1994-09-23 1999-01-26 Baroid Technology, Inc. Detecting and reducing bit whirl
FR2732403B1 (fr) * 1995-03-31 1997-05-09 Inst Francais Du Petrole Methode et systeme de prediction de l'apparition d'un dysfonctionnement en cours de forage
FR2750159B1 (fr) * 1996-06-24 1998-08-07 Inst Francais Du Petrole Methode et systeme d'estimation en temps reel d'au moins un parametre lie au comportement d'un outil de fond de puits
FR2750160B1 (fr) * 1996-06-24 1998-08-07 Inst Francais Du Petrole Methode et systeme d'estimation en temps reel d'au moins un parametre lie au deplacement d'un outil de forage
GB9824248D0 (en) 1998-11-06 1998-12-30 Camco Int Uk Ltd Methods and apparatus for detecting torsional vibration in a downhole assembly
FR2792363B1 (fr) 1999-04-19 2001-06-01 Inst Francais Du Petrole Methode et systeme de detection du deplacement longitudinal d'un outil de forage
US9051781B2 (en) 2009-08-13 2015-06-09 Smart Drilling And Completion, Inc. Mud motor assembly
US9745799B2 (en) 2001-08-19 2017-08-29 Smart Drilling And Completion, Inc. Mud motor assembly
US7114578B2 (en) * 2002-04-19 2006-10-03 Hutchinson Mark W Method and apparatus for determining drill string movement mode
EA009115B1 (ru) * 2002-04-19 2007-10-26 Марк У. Хатчинсон Способ определения нарушения нормального хода бурения
GB0211836D0 (en) * 2002-05-23 2002-07-03 Curvaceous Software Ltd Multi-variable processes
SE535585C2 (sv) * 2010-09-20 2012-10-02 Spc Technology Ab Förfarande och anordning för slagverkande sänkhålsborrning

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2775889A (en) * 1951-03-19 1957-01-01 Martin Decker Corp Torque determining method
US2691300A (en) * 1951-12-17 1954-10-12 Phillips Petroleum Co Torque computer
US2810546A (en) * 1952-03-25 1957-10-22 Physics Corp Drill tool telemetering systems
US3605919A (en) * 1969-05-16 1971-09-20 Automatic Drilling Mach Drilling rig control
US3593807A (en) * 1969-12-11 1971-07-20 Frank J Klima Drilling apparatus
USRE28436E (en) * 1970-12-28 1975-06-03 Method op determining downhole occurences in well drilling using rotary torque oscillation measurements
US3703096A (en) * 1970-12-28 1972-11-21 Chevron Res Method of determining downhole occurrences in well drilling using rotary torque oscillation measurements
US3788136A (en) * 1972-08-11 1974-01-29 Texaco Inc Method and apparatuses for transmission of data from the bottom of a drill string during drilling of a well
US3837223A (en) * 1972-09-20 1974-09-24 Texaco Inc Method and apparatuses for transmitting data up a drill string
US4250758A (en) * 1978-12-22 1981-02-17 Texaco Inc. Combination for use in a rotary drilling system with torque meter
US4285236A (en) * 1979-11-23 1981-08-25 Dresser Industries, Inc. Rotary torque and rpm indicator for oil well drilling rigs
GB2179736B (en) * 1985-08-30 1989-10-18 Prad Res & Dev Nv Method of analyzing vibrations from a drilling bit in a borehole
GB2217012B (en) * 1988-04-05 1992-03-25 Forex Neptune Sa Method of determining drill bit wear
GB2228326B (en) * 1988-12-03 1993-02-24 Anadrill Int Sa Method for determining the instantaneous rotation speed of a drill string
GB8916459D0 (en) * 1989-07-19 1989-09-06 Forex Neptune Serv Tech Sa Method of monitoring the drilling of a borehole

Also Published As

Publication number Publication date
ATE118596T1 (de) 1995-03-15
CA2072138C (fr) 1997-11-18
DE69107441D1 (de) 1995-03-23
FR2666845A1 (fr) 1992-03-20
NO921901D0 (no) 1992-05-14
DK0500877T3 (da) 1995-07-17
FR2666845B1 (fr) 1997-01-10
DE69107441T2 (de) 1995-12-14
NO921901L (no) 1992-05-29
ES2071329T3 (es) 1995-06-16
EP0500877A1 (de) 1992-09-02
NO308427B1 (no) 2000-09-11
CA2072138A1 (fr) 1992-03-15
OA09981A (fr) 1996-03-29
WO1992005337A1 (fr) 1992-04-02
US5245871A (en) 1993-09-21

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