公开(公告)号：US20240229635A9

公开(公告)日：2024-07-11

申请号：US18402831

申请日：2024-01-03

Applicant: CHINA UNIVERSITY OF PETROLEUM

Inventor： Weiliang Wang ,  Yanfeng Geng ,  Mingzhu Shao ,  Huijie Xu ,  Mengyu Tu

IPC: E21B44/00 ,  E21B4/04 ,  E21B7/06 ,  E21B47/024 ,  G01D21/02

CPC classification number: E21B44/005 ,  E21B4/04 ,  E21B7/068 ,  E21B47/024 ,  G01D21/02 ,  E21B2200/20

Abstract: Provided are a method and device for fault estimation of a measurement and control device for a rotary steerable drilling system. The method for fault estimation includes: S1, establishing a state model of the measurement and control device for the rotary steerable drilling system; S2, establishing a fault-free model filter and a fault model filter, and initializing the fault-free model filter and the fault model filter; S3, detecting whether the measurement and control device for the rotary steerable drilling system has a fault; and S4, reinitializing the fault model filter under the condition that a detection result is fault-free; reinitializing the fault-free model filter under the condition that the detection result is faulty; and estimating, by the fault model filter, the fault in real time, and obtaining, by the fault model filter, the estimation value {circumflex over (x)}wf.

公开(公告)号：US20240133285A1

公开(公告)日：2024-04-25

申请号：US18402831

申请日：2024-01-03

Applicant: CHINA UNIVERSITY OF PETROLEUM

Inventor： Weiliang Wang ,  Yanfeng Geng ,  Mingzhu Shao ,  Huijie Xu ,  Mengyu Tu

IPC: E21B44/00 ,  E21B4/04 ,  E21B7/06 ,  E21B47/024 ,  G01D21/02

CPC classification number: E21B44/005 ,  E21B4/04 ,  E21B7/068 ,  E21B47/024 ,  G01D21/02 ,  E21B2200/20

Abstract: Provided are a method and device for fault estimation of a measurement and control device for a rotary steerable drilling system. The method for fault estimation includes: S1, establishing a state model of the measurement and control device for the rotary steerable drilling system; S2, establishing a fault-free model filter and a fault model filter, and initializing the fault-free model filter and the fault model filter; S3, detecting whether the measurement and control device for the rotary steerable drilling system has a fault; and S4, reinitializing the fault model filter under the condition that a detection result is fault-free; reinitializing the fault-free model filter under the condition that the detection result is faulty; and estimating, by the fault model filter, the fault in real time, and obtaining, by the fault model filter, the estimation value {circumflex over (x)}wf.

公开(公告)号：US12098629B2

公开(公告)日：2024-09-24

申请号：US18402831

申请日：2024-01-03

Applicant: CHINA UNIVERSITY OF PETROLEUM

Inventor： Weiliang Wang ,  Yanfeng Geng ,  Mingzhu Shao ,  Huijie Xu ,  Mengyu Tu

IPC: E21B44/00 ,  E21B4/04 ,  E21B7/06 ,  E21B47/024 ,  G01D21/02

CPC classification number: E21B44/005 ,  E21B4/04 ,  E21B7/068 ,  E21B47/024 ,  G01D21/02 ,  E21B2200/20

Abstract: Provided are a method and device for fault estimation of a measurement and control device for a rotary steerable drilling system. The method for fault estimation includes: S1, establishing a state model of the measurement and control device for the rotary steerable drilling system; S2, establishing a fault-free model filter and a fault model filter, and initializing the fault-free model filter and the fault model filter; S3, detecting whether the measurement and control device for the rotary steerable drilling system has a fault; and S4, reinitializing the fault model filter under the condition that a detection result is fault-free; reinitializing the fault-free model filter under the condition that the detection result is faulty; and estimating, by the fault model filter, the fault in real time, and obtaining, by the fault model filter, the estimation value {circumflex over (x)}wf.