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1. WO2020139341 - REDUCTION OF BACKWARD WHIRL DURING DRILLING

Publication Number WO/2020/139341
Publication Date 02.07.2020
International Application No. PCT/US2018/067657
International Filing Date 27.12.2018
IPC
E21B 44/00 2006.01
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
44Automatic 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
E21B 41/00 2006.01
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
41Equipment or details not covered by groups E21B15/-E21B40/95
CPC
E21B 41/00
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
41Equipment or details not covered by groups E21B15/00 - E21B40/00
E21B 44/00
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
44Automatic 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
Applicants
  • HALLIBURTON ENERGY SERVICES, INC. [US]/[US]
Inventors
  • CHEN, Shilin
Agents
  • XIE, AnTu
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) REDUCTION OF BACKWARD WHIRL DURING DRILLING
(FR) RÉDUCTION DU TOURBILLON VERS L'ARRIÈRE PENDANT LE FORAGE
Abstract
(EN)
An apparatus includes a processor and a machine-readable medium having program code executable by the processor to cause the apparatus to determine a first parameter based on a walk force of a drill bit. The program code also includes instructions to generate a whirl index value that comprises a ratio of drilling parameters, wherein at least one parameter of the ratio of drilling parameters is the first parameter. Based on a determination that the whirl index value exceeds a whirl index threshold, the program code includes instructions to determine that a drilling operation induces backward whirl, wherein the drilling operation is characterized by the drilling parameters.
(FR)
Un appareil comprend un processeur et un support lisible par machine ayant un code de programme exécutable par le processeur pour amener l'appareil à déterminer un premier paramètre sur la base d'une force de marche d'un trépan. Le code de programme comprend également des instructions pour générer une valeur d'indice de tourbillon qui comprend un rapport de paramètres de forage, au moins un paramètre du rapport des paramètres de forage étant le premier paramètre. Sur la base d'une détermination que la valeur d'indice de tourbillon dépasse un seuil d'indice de tourbillon, le code de programme comprend des instructions pour déterminer qu'une opération de forage induit un tourbillon vers l'arrière, l'opération de forage étant caractérisée par les paramètres de forage.
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