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：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.

公开(公告)号：US09976416B2

公开(公告)日：2018-05-22

申请号：US14355436

申请日：2013-06-25

Applicant: Landmark Graphics Corporation

Inventor： Robello Samuel ,  Aniket

IPC: E21B49/00 ,  G01N29/04 ,  E21B44/00 ,  E21B47/00

CPC classification number: E21B49/003 ,  E21B44/00 ,  E21B47/00 ,  G01N29/04

Abstract: Casing wear estimation. At least some of the illustrative embodiments are methods including: calculating a value indicative of static casing wear of the drilling operation, the static casing wear caused by interaction of a drill string against an inside diameter of a casing; calculating a value indicative of impact casing wear of the drilling operation, the impact casing wear caused by interaction of the drill string against the inside diameter of a casing; and combining the value indicative of static casing wear and the value indicative of impact casing wear to determine the value indicative of aggregate casing wear.

公开(公告)号：US20170204720A1

公开(公告)日：2017-07-20

申请号：US15328414

申请日：2014-09-08

Applicant: LANDMARK GRAPHICS CORPORATION

Inventor： Robello Samuel ,  Aniket

IPC: E21B47/00 ,  E21B47/08 ,  G06F17/50 ,  E21B47/022

Abstract: Disclosed embodiments include a method for estimating casing wear including the operations of: obtaining locations of survet points along a borehole, said survey point locations representing a borehole trajectory; casing at least a portion of the borehole with a casing string; deriving locations of adjusted survey points that represent a casing trajectory along said portion of the borehole, the casing trajectory being different from the borehole trajectory; estimating, as a function of position along said casing string, a side force of a drill string against the casing string; computing, as a function of position along the casing string, casing wear based at least in part on the side force; and generating a notification of any positions where casing wear exceeds a threshold.