公开(公告)号：US20210102435A1

公开(公告)日：2021-04-08

申请号：US16495706

申请日：2017-06-16

Applicant: Landmark Graphics Corporation

Inventor： Robello Samuel ,  Yuan Zhang

IPC: E21B31/00 ,  E21B7/04 ,  E21B47/09

Abstract: A method comprising determining a property of a first section of drill pipe that is to connect a first agitator to a second agitator in a bottom hole assembly of a drill string, determining a distance between the first agitator and the second agitator based, at least in part, on the property of the lirst section of drill pipe, positioning the first agitator in the bottom hole assembly of the drill string, and positioning the second agitator in the bottom hole assembly of the drill string relative to the lirst agitator based, at least in part, on the distance.

公开(公告)号：US10385656B2

公开(公告)日：2019-08-20

申请号：US14895165

申请日：2014-01-17

Applicant: LANDMARK GRAPHICS CORPORATION

Inventor： Robello Samuel ,  Zhenying Wang

IPC: E21B41/00 ,  E21B7/04 ,  G06F17/16 ,  E21B17/00

Abstract: Systems and methods for determining manufacturing or operating parameters for a deviated downhole well component, including a method that includes representing a tubular string as nodes separated by segments, determining transfer matrices for determining an ith node's state vector from an ith−1 node's state vector, and defining initial state vector values for the reference node. The nodes are numerable from 1 to N with an initial, mechanically constrained reference node representable with i=0, and each is associated with a state vector describing a corresponding node position and one or more forces present at said node. The method further includes applying the transfer matrices to obtain each of the state vectors' values, deriving from at least one of the state vectors a parameter value for said component, and specifying a component having said parameter value. The parameter value can include a centralizer or stabilizer composition, manufacturing dimensions, or position.

公开(公告)号：US10352148B2

公开(公告)日：2019-07-16

申请号：US15300754

申请日：2014-08-12

Applicant: Landmark Graphics Corporation

Inventor： Robello Samuel ,  . Aniket

IPC: G01B21/00 ,  E21B47/00 ,  G01B21/08

Abstract: An illustrative method for estimating casing wear, including estimating, as a function of position along a casing string, a side force of a tubular string against the casing string, wherein said estimating accounts for a bending stiffness of the tubular string. The method further including determining, based at least in part on the side force, a casing string wear volume as a function of position along the casing string, and presenting the casing string wear volume to a user.

公开(公告)号：US10280732B2

公开(公告)日：2019-05-07

申请号：US15313502

申请日：2014-08-21

Applicant: LANDMARK GRAPHICS CORPORATION

Inventor： Serkan Dursun ,  Robello Samuel ,  Aniket

IPC: E21B44/06 ,  E21B47/12 ,  E21B7/04 ,  E21B21/08 ,  E21B44/04 ,  E21B45/00 ,  E21B47/06 ,  E21B49/00 ,  G01V99/00

Abstract: A method including obtaining input attribute values and a target risk attribute value associated with a first borehole segment. The method also includes training a prediction model for the target risk attribute using the input attribute values and the target risk attribute value. The method also includes acquiring subsequent input attribute values. The method also includes using the trained prediction model and the subsequent input attribute values to predict a target risk attribute value for a second borehole segment. The method also includes storing or displaying information based on the predicted target risk attribute value.

公开(公告)号：US10280730B2

公开(公告)日：2019-05-07

申请号：US15309161

申请日：2014-06-04

Applicant: LANDMARK GRAPHICS CORPORATION

Inventor： Robello Samuel ,  Xiaoqian Huang

IPC: E21B44/00 ,  E21B21/08 ,  E21B43/12 ,  E21B43/30 ,  E21B21/00

Abstract: One implementation of the disclosure provides a computer implemented method for underbalanced drilling. The implementation may include determining an initial 2D UBD operation envelope based on a set of initial operating points for a selected TVD or time, displaying the initial 2D UBD operation envelope on a computer display, providing at least one data point representing actual data from a well, determining at least one actual UBD operation point using the at least one data point and displaying it on the computer display along with the 2D UBD operation envelope, selecting an optimization parameter, determining a set of optimized operating points based on the optimization parameter, and displaying the set of optimized operating points on the computer display along with the 2D UBD operation envelope.

公开(公告)号：US10267138B2

公开(公告)日：2019-04-23

申请号：US15509060

申请日：2014-10-08

Applicant: Landmark Graphics Corporation

Inventor： Robello Samuel ,  Aniket ,  Serkan Dursun

IPC: E21B21/08 ,  E21B44/02 ,  E21B21/00 ,  E21B47/06 ,  E21B49/00 ,  E21B47/18

Abstract: One drilling method embodiment includes: obtaining a set of drilling parameters, possibly from a drilling plan; applying the set of drilling parameters to a physics-based model to obtain an estimated log of a downhole parameter such as temperature; and refining the estimated log using a data-driven model with a set of exogenous parameters. Temperature cycling and cumulative fatigue (or other measures of failure probability or remaining tool life) may be derived to predict tool failures, identify root causes of poor drilling performance, and determine corrective actions.

公开(公告)号：US10233750B2

公开(公告)日：2019-03-19

申请号：US14765822

申请日：2013-02-27

Applicant: LANDMARK GRAPHICS CORPORATION

Inventor： Robello Samuel ,  Olivier R. Germain

IPC: E21B49/00 ,  E21B7/04 ,  G05B13/04 ,  E21B47/022

Abstract: Calculating wellbore energy. At least some of the illustrative embodiments are methods including: calculating an expected wellbore energy for a planned wellpath, the calculating by a computer system; calculating an expected tortuosity of the planned wellpath; calculating a first value indicative of probability of occurrence of a drilling event for drilling along the planned wellpath, the first value based on the expected wellbore energy and the expected tortuosity; and then drilling a wellbore along at least a first portion of the planned wellpath if the first value indicates the probability of the drilling event is less than a predetermined threshold.

公开(公告)号：US20190048703A1

公开(公告)日：2019-02-14

申请号：US16081388

申请日：2016-04-15

Applicant: Landmark Graphics Corporation

Inventor： Robello Samuel ,  Umesh N. Reddy ,  Aniket Aniket ,  Zhengchun M. Liu ,  Gustavo A. Urdaneta

IPC: E21B44/00 ,  E21B7/04

Abstract: System and methods for optimizing parameters for drilling operations are provided. A target value of a user-selected operating variable is estimated for each stage of a drilling operation to be performed along a planned well path, based on a first set of wellsite data. Values of one or more drilling parameters are determined for performing each stage of the operation, based on the estimated target value of the operating variable for that stage. The target value of the operating variable is updated based on a second set of wellsite data obtained during a current stage of the operation. The values of the drilling parameters are optimized for subsequent stages of the drilling operation based on the updated target value. The planned path of the well is adjusted for the subsequent stages, based on the optimized drilling parameter values. The subsequent stages are performed along the adjusted path of the well.

公开(公告)号：US20190041182A1

公开(公告)日：2019-02-07

申请号：US15759606

申请日：2015-10-29

Applicant: LANDMARK GRAPHICS CORPORATION

Inventor： Robello Samuel

IPC: G01B5/00 ,  E21B47/00

Abstract: Tubular stretch correction for different operational conditions is applied to determine tubular wear volume.

公开(公告)号：US10185786B2

公开(公告)日：2019-01-22

申请号：US14894981

申请日：2013-09-30

Applicant: Landmark Graphics Corporation

Inventor： Robello Samuel ,  Nitish Chaudhari ,  Aniket

IPC: G06F17/50 ,  E21B49/00 ,  E21B43/10

Abstract: The disclosed embodiments include a method, apparatus, and computer program product for determining a suitable casing design for a well. For example, one disclosed embodiment includes a system that includes at least one processor and at least one memory coupled to the at least one processor and storing instructions that when executed by the at least one processor performs operations for receiving historical data associated with previously drilled wells; in response to a determination that the historical data associated with previously drilled well is relevant to the well, generating a first set of casing designs using a probabilistic approach and generating a second set of casing designs using a combination approach that combines the probabilistic approach with a deterministic approach; and selecting a suitable casing design from a resulting set of casing designs.