公开(公告)号：US20230168405A1

公开(公告)日：2023-06-01

申请号：US17538759

申请日：2021-11-30

Applicant: SAUDI ARABIAN OIL COMPANY

Inventor： Obai Nabeel Malik Shaikh

IPC: G01V1/30 ,  G01V1/50 ,  G06N3/08 ,  E21B47/14

CPC classification number: G01V1/306 ,  E21B47/14 ,  G01V1/50 ,  G06N3/08 ,  E21B2200/22 ,  G01V2210/6226

Abstract: A system for estimating a rock property away from a well may include one or more hardware processors configured to access acquired three-dimensional (3D) seismic data that includes seismic traces from a 3D seismic survey of an area of interest. The system may also include a multi-head Convolutional Neural Network (CNN) model. The multi-head CNN model may include a plurality of kernels of various sizes for determining spatial and temporal relationships of the captured 3D seismic data at different resolutions. The multi-head CNN model may be trained to generate an estimated rock property value of a formation zone included in the area of interest, away from the well. The one or more hardware processors are further configured to update a drilling program for a production system based on the estimated rock property value. The drilling program may be executed on a computing device of the production system.

公开(公告)号：US11609351B2

公开(公告)日：2023-03-21

申请号：US17033413

申请日：2020-09-25

Applicant: Cung K. Vu

Inventor： Cung K. Vu

IPC: G01V1/42 ,  E21B47/14 ,  E21B49/00

Abstract: Methods for measuring seismic velocities and for monitoring local changes in inter-well seismic velocities in real time are described. Two or more spaced-apart observation wells are provided. Seismic receiver arrays are placed in the observation wells, and a seismic source array is provided at surface locations away from the well bores and producing areas. Compression (P), vertical shear (Sv) and/or horizontal shear (Sh) seismic wave signals are generated from each element of the seismic source array, and the seismic signals arriving at the receivers in the observation wells are recorded. The virtual source method is then applied to the recorded data to compute emulated cross-well seismic signals of the virtual sources at receiver locations in one observation well propagating toward the receivers at other observation wells. Analysis of direct arrivals of emulated cross-well seismic signals can be completed to extract travel times, inter-well seismic velocities, and rock properties.

公开(公告)号：US20230003118A1

公开(公告)日：2023-01-05

申请号：US17363326

申请日：2021-06-30

Applicant: SAUDI ARABIAN OIL COMPANY

Inventor： Murtadha J. AlTammar ,  Weichang Li ,  Khalid M. Alruwaili ,  Osman Hamid

IPC: E21B47/14 ,  E21B47/002 ,  E21B47/04 ,  E21B43/30

Abstract: A computer-implemented method may include obtaining well logs data pertaining to a well of interest. The method may further include training a physics-constrained machine learning (PCML) model using the obtained well logs data as inputs. The method may further include outputting one or more sonic logs and mechanical properties of interest determined by using the trained PCML model and the obtained well logs data for the well of interest. The method may further include updating the determined sonic logs and mechanical properties of interest based on a breakout model and field breakout data for the well of interest. The method may further include outputting the final sonic logs for the well of interest. The method may further include determining one or more mechanical properties for well planning based on the final sonic logs for the well of interest.

公开(公告)号：US20220381143A1

公开(公告)日：2022-12-01

申请号：US17767133

申请日：2019-12-16

Applicant: LYTT LIMITED

Inventor： Cagri CERRAHOGLU ,  Pradyumna` THIRUVENKATANATHAN ,  James Crofton RAMSAY

IPC: E21B47/135 ,  E21B47/07 ,  E21B47/103 ,  E21B47/113 ,  G01H9/00 ,  G01K11/32 ,  E21B47/08 ,  E21B47/14

Abstract: A method of detecting one or more events comprises determining a plurality of temperature features from a temperature sensing signal, using the plurality of temperature features in an event detection model, and determining the presence or absence of the one or more events at one or more locations based on an output from the event detection model.

公开(公告)号：US11512586B2

公开(公告)日：2022-11-29

申请号：US17064305

申请日：2020-10-06

Applicant: Halliburton Energy Services, Inc.

Inventor： Qingtao Sun ,  Chung Chang ,  Richard Timothy Coates

IPC: E21B47/14 ,  E21B17/16

Abstract: A logging-while-drilling (LWD) tool for use within a formation. The LWD tool may include a transmitter, a receiver, and an acoustic isolator. The transmitter may be operable to transmit an acoustic signal into the formation. The receiver may be operable to receive an acoustic response from the formation. The acoustic isolator may be positioned longitudinally between the transmitter and the receiver to reduce a transfer of acoustic energy between the transmitter and the receiver through the LWD tool. The acoustic isolator may include annular chambers formed in a body of the acoustic isolator and positioned along a longitudinal axis of the acoustic isolator.

公开(公告)号：US11414949B2

公开(公告)日：2022-08-16

申请号：US16831188

申请日：2020-03-26

Applicant: WORLDWIDE OILFIELD MACHINE, INC.

Inventor： Reddi Udaya Bhaskara Rao

IPC: E21B47/14 ,  E21B47/07 ,  E21B33/035 ,  E21B17/08

Abstract: The present invention discloses apparatus and methods for a lightweight subsea intervention package. In one embodiment, the system comprises a lower riser package for controlling the subsea well which utilizes a plurality of hydraulically activated well barriers. An emergency disconnect package is secured to the lower riser package and is electrically connected to the lower riser package. The emergency disconnect package is operable to seal the bottom of a riser and minimize environmental leakage of fluid from the riser. The lower riser package and emergency disconnect package each contain a closed loop system of fluid operable to control the system without fluid from the surface. Each is operable to control the well barriers. Either an electrical connection or an acoustic control system may be utilized to control the system. The lower riser package can be operated from the surface when the emergency disconnect package has been disconnected.

公开(公告)号：US20220243584A1

公开(公告)日：2022-08-04

申请号：US17504806

申请日：2021-10-19

Applicant: Tongji University

Inventor： Fengshou Zhang ,  Rui Feng ,  Zirui Yin ,  Shutian Cao ,  Luanxiao Zhao

IPC: E21B47/107 ,  E21B47/14

Abstract: The present disclosure relates to a method for pre-warning deformation of a casing pipe according to a change feature of the b-value of the hydraulic fracturing induced microseismicity. Based on number distribution and seismic magnitudes of hydraulic fracturing induced microseismic monitoring events, a b-value of microseismicity in a fracturing stage is calculated according to a Gutenberg-Richter relation describing frequency-seismic magnitude distribution in seismology, and whether fault activation occurs in a fracturing process is identified according to a change feature of the b-value. According to the method, a cumulative effect of fault activation in the hydraulic fracturing process is considered, and symptoms of fault activation in the fracturing process can be accurately identified, so as to pre-warn deformation of the casing pipe.

公开(公告)号：US20220205357A1

公开(公告)日：2022-06-30

申请号：US17136354

申请日：2020-12-29

Applicant: Mueller International, LLC

Inventor： Bruce Robertson ,  Valentin Mircea Burtea ,  Sebastien Perrier ,  Joseph Butterfield

IPC: E21B47/14 ,  E21B47/107 ,  G01V1/00

Abstract: Methods, systems, and computer-readable storage media for performing high-resolution assessment of the condition of pipes of a fluid distribution system using in-bracket excitation. Acoustical impulses are generated in a pipe at two excitation locations along the pipe while signal data is recorded from two acoustic sensors, at least one of the excitation locations being located in-bracket of the two acoustic sensors. A first time delay between the arrival of the acoustical impulses at the two acoustic sensors is computed from the signal data recorded during generation of the impulses at the first excitation location, and a second time delay between the arrival of the impulses at the two sensors is computed from the signal data recorded during generation of the impulses at the second excitation location. An acoustic propagation velocity is computed for a section of the pipe defined by the first and second excitation location based on the first time delay, the second time delay, and a distance between the excitation locations, and a condition of the section of pipe is determined from the computed acoustic propagation velocity.

公开(公告)号：US20220120928A1

公开(公告)日：2022-04-21

申请号：US17310167

申请日：2020-01-22

Applicant: Schlumberger Technology Corporation

Inventor： Hiroshi Hori ,  Kenji Endo ,  Mika Uno

IPC: G01V1/50 ,  G01V1/46 ,  E21B49/00 ,  E21B47/0224 ,  E21B47/04 ,  E21B47/14 ,  E21B47/002 ,  E21B47/26

Abstract: A method can include, using a downhole tool, acquiring ultrasonic echo data of a borehole, where the ultrasonic echo data include echoes representative of material and borehole geometry responsive to reflection of ultrasonic energy that has a wide-band frequency range; filtering the ultrasonic echo data using at least one selected filter for multi-band frequency filtering corresponding to different frequency ranges of the wide-band frequency range to generate filtered data; and processing the filtered data to generate attribute values representative of physical characteristics the material, the borehole geometry, or the material and the borehole geometry.

公开(公告)号：US11286769B2

公开(公告)日：2022-03-29

申请号：US16303283

申请日：2017-05-26

Applicant: METROL TECHNOLOGY LIMITED

Inventor： Leslie David Jarvis ,  Shaun Compton Ross

IPC: E21B47/07 ,  E21B47/13 ,  E21B47/14 ,  E21B41/00 ,  G01K7/18 ,  G01K7/20 ,  E21B47/06 ,  E21B33/12 ,  E21B43/116 ,  E21B43/24

Abstract: Apparatus for use in sensing temperature in a wellbore, comprising: tubing comprising a plurality of temperature sensor modules provided at locations along the inside of the tubing, said temperature sensor modules comprising temperature sensors provided at least in part by at least one resistive element having electrical properties that vary with temperature; an electrical network configured to electrically connect to the resistive elements to in use allow measuring of the respective electrical properties of the resistive elements to infer a thermal characteristic of the resistive element; and at least one control module electrically connected to multiple temperature sensor modules, via the electrical network, and configured to receive and process an electrical signal associated with the temperature sensor modules to enable inference of the temperature of the resistive elements and the environment to which the tubing is exposed at the location of that resistive element.