Some content of this application is unavailable at the moment.
If this situation persist, please contact us atFeedback&Contact
1. (WO2018106254) DIRECTIONAL DRILLING WITH STOCHASTIC PATH OPTIMIZATION OF OPERATING PARAMETERS
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.: WO/2018/106254 International Application No.: PCT/US2016/065789
Publication Date: 14.06.2018 International Filing Date: 09.12.2016
IPC:
E21B 7/06 (2006.01) ,E21B 41/00 (2006.01) ,E21B 44/00 (2006.01)
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
B
EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
7
Special methods or apparatus for drilling
04
Directional drilling
06
Deflecting the direction of boreholes
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
B
EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
41
Equipment or details not covered by groups E21B15/-E21B40/95
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
B
EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
44
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
Applicants:
HALLIBURTON ENERGY SERVICES, INC. [US/US]; 3000 N. Sam Houston Parkway E. Houston, Texas 77032-3219, US
Inventors:
XUE, Yuzhen; US
DYKSTRA, Jason D.; US
Agent:
PARKER, Greg H.; US
Priority Data:
Title (EN) DIRECTIONAL DRILLING WITH STOCHASTIC PATH OPTIMIZATION OF OPERATING PARAMETERS
(FR) FORAGE DIRIGÉ À OPTIMISATION DE TRAJET STOCHASTIQUE DE PARAMÈTRES D'OPÉRATION
Abstract:
(EN) A disclosed drilling method includes: obtaining a formation model representing formation properties to be encountered by a drilling assembly being steered towards a target; identifying at least one path-dependent drilling dynamics model for predicting the drilling assembly's response to one or more operating parameters; characterizing uncertainties associated with said formation model and said at least one drilling dynamics model, said characterizing yielding a probability density function for each uncertainty; representing an acceptable range for each of said one or more operating parameters as a probability density function; employing the probability density functions to determine random samples of said uncertainties and of said one or more operating parameters; applying a cost function to the random samples to determine an expected cost as a function said one or more operating parameters; and displaying the randomly sampled operating parameters having a minimum expected cost as optimized operating parameters.
(FR) Cette invention concerne un procédé de forage comprenant les étapes consistant à : obtenir un modèle de formation représentant des propriétés de formation devant être rencontrées par un ensemble de forage dirigé vers une cible ; identifier au moins un modèle de dynamique de forage dépendant du trajet pour prédire la réponse de l'ensemble de forage à un ou plusieurs paramètres d'opération ; caractériser des incertitudes associées audit modèle de formation et audit/auxdits modèle(s) de dynamique de forage, ladite caractérisation donnant une fonction de densité de probabilité pour chaque incertitude ; représenter une plage acceptable pour chacun desdits paramètres d'opération en tant que fonction de densité de probabilité ; utiliser les fonctions de densité de probabilité pour déterminer des échantillons aléatoires desdites incertitudes et desdits paramètres d'opération ; appliquer une fonction de coût aux échantillons aléatoires pour déterminer un coût prévu en fonction desdits paramètres d'opération ; et afficher les paramètres d'opération échantillonnés de manière aléatoire ayant un coût prévu minimal en tant que paramètres d'opération optimisés.
front page image
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)