公开(公告)号：US20220229942A1

公开(公告)日：2022-07-21

申请号：US17152300

申请日：2021-01-19

Applicant: Landmark Graphics Corporation

Inventor： Zhengchun Liu ,  Robello Samuel ,  Adolfo Gonzales ,  Yongfeng Kang ,  Jenny Z. Xie

IPC: G06F30/10 ,  E21B47/007 ,  E21B47/08

Abstract: The disclosure presents processes for improving the design phase of tubular structures to be used downhole in a borehole. A hybrid collapse strength model can be utilized that uses a linear collapse strength model for an initial percentage range based on the initial wall thickness of the tubular structure. A standards collapse strength model can be used once a wall thickness threshold is not satisfied. In some aspects, a transition collapse strength model can be used prior to the standards collapse strength model to avoid discontinuities in the analysis. The hybrid collapse strength model can enable more efficient use of tubular structures, designing a longer operational lifetime, or the use of thinner structures while maintaining a satisfactory operational lifetime. Lower operational costs of the borehole can be achieved through using less expensive tubular structures and through a reduction of costs associated with replacing a section of casing within the borehole.

公开(公告)号：US20220205353A1

公开(公告)日：2022-06-30

申请号：US17606228

申请日：2019-05-16

Applicant: Landmark Graphics Corporation

Inventor： Zhengchun Liu ,  Robello Samuel ,  Adolfo Gonzales ,  Yongfeng Kang

IPC: E21B47/00

Abstract: A method for assessing an integrity of metal tubular structures may comprise receiving one or more inputs, applying an algorithm to automatically select an appropriate model for a given corrosion scenario, applying a combined model including semi-empirical and multiphase flow corrosion characteristics to the one or more inputs, determining one or more corrosion parameters of either an internal pipe wall, an external pipe surface, or both, applying a corrosion correlation value to the one or more corrosion parameters to produce one or more correlated corrosion parameters, and storing the one or more correlated corrosion parameters on a computer readable medium. A system may comprise an information handling system which may comprise at least one memory operable to store computer-executable instructions, at least one communications interface to access the at least one memory, and at least one processor.

公开(公告)号：US20220186603A1

公开(公告)日：2022-06-16

申请号：US17120304

申请日：2020-12-14

Applicant: Landmark Graphics Corporation

Inventor： Robello Samuel

IPC: E21B47/022 ,  E21B47/007

Abstract: Methods and systems for determining wellpath tortuosity are disclosed. In accordance with an embodiment, a tortuosity of a borehole segment is determined and a tortuosity of a casing associated with the borehole segment is determined based, at least in part, on the tortuosity of the borehole segment and a path conformity characteristic of the casing. A tortuosity variation factor is generated based on a value of the tortuosity of the casing relative to a value of the tortuosity of the borehole segment.

公开(公告)号：US20220136370A1

公开(公告)日：2022-05-05

申请号：US17258539

申请日：2020-03-24

Applicant: Landmark Graphics Corporation

Inventor： Zhengchun Liu ,  Robello Samuel ,  Adolfo Gonzales ,  Yongfeng Kang

IPC: E21B41/00 ,  G06F30/17

Abstract: A method for designing a borehole tubular for use in a borehole. The method may include defining tubular sections that make up the borehole tubular, defining a downhole operation that will be conducted using the borehole tubular at a first timestamp, determining loads that will be applied to each of the tubular sections at respective specific depths along the borehole during the downhole operation at the first timestamp, determining a design limit envelope for each of the tubular sections at the first timestamp based on design parameters of the tubular section and the specific depth of the tubular section at the first timestamp, and displaying a three-dimensional (3D) plot of the design limit envelopes of the tubular sections and the loads applied to the tubular sections as a function of depth within the borehole on a display.

公开(公告)号：US20220018240A1

公开(公告)日：2022-01-20

申请号：US16928199

申请日：2020-07-14

Applicant: Landmark Graphics Corporation

Inventor： Robello Samuel

IPC: E21B44/08 ,  E21B47/007

Abstract: Vibrations occurring during downhole drilling operations can be predicted and reduced according to some examples. One particular example includes a system that can receive drilling parameter values associated with a drilling operation involving drilling a wellbore through a subterranean formation using a drill string. The system can receive a depth value associated with the drilling parameter values. The system can provide the drilling parameter values as input to a drill string model to receive a critical speed prediction as output from the drill string model. The system can then generate a speed-depth mapping based on the critical speed prediction and the depth value. The speed-depth mapping can be used to avoid the critical speed at the depth in the wellbore, which may prevent a failure of the drill string resulting from associated vibrations.

公开(公告)号：US20220003110A1

公开(公告)日：2022-01-06

申请号：US16758027

申请日：2019-06-06

Applicant: Landmark Graphics Corporation

Inventor： Robello Samuel ,  Yuan Zhang

IPC: E21B47/007 ,  E21B47/08

Abstract: A method for calculating wellbore casing wear is provided that includes determining a wellbore boundary for an open hole wellbore segment, calculating a casing shape within the open hole wellbore segment based on one or more casing attributes, determining whether or not the casing shape exceeds the wellbore boundary, calculating casing wear based on the boundary of the open hole wellbore segment if the casing shape is determined to exceed the wellbore boundary, otherwise calculating the casing wear parameter based on the casing shape if the casing shape is determined not to exceed the wellbore boundary, and storing the casing wear parameter on a computer readable medium.

公开(公告)号：US20210388717A1

公开(公告)日：2021-12-16

申请号：US17039327

申请日：2020-09-30

Applicant: Landmark Graphics Corporation

Inventor： Nagaraj Srinivasan ,  Robello Samuel

IPC: E21B49/00 ,  E21B44/02 ,  G06N3/08

Abstract: A system can assign a value to one or more sustainability factors for a wellbore operation based on historical data. The system can determine, for each of the one or more sustainability factors, a weight. The system can determine a sustainability index corresponding to a predicted carbon footprint for the wellbore operation based on the weight and the value for each of the one or more sustainability factors. The system can output a command for adjusting the wellbore operation based on the sustainability index.

公开(公告)号：US10669845B2

公开(公告)日：2020-06-02

申请号：US15759606

申请日：2015-10-29

Applicant: Landmark Graphics Corporation

Inventor： Robello Samuel

IPC: E21B49/00 ,  E21B47/00 ,  G01B5/00

Abstract: Tubular stretch correction for different operational conditions is applied to determine tubular wear volume. The tubular stretch correction is applied as a function of a stretch factor comprising a varying shift factor, axial load on the tubular string, pressure effects on the tubular string, buckling of the tubular string and/or temperature effects on the tubular string. Stretch factors are taken into account to determine the correct position of wear factors along the casing string, which are ultimately used to determine the casing wear volume.

公开(公告)号：US10597998B2

公开(公告)日：2020-03-24

申请号：US15328414

申请日：2014-09-08

Applicant: LANDMARK GRAPHICS CORPORATION

Inventor： Robello Samuel ,  Aniket

IPC: E21B47/00 ,  E21B47/022 ,  G06F17/50 ,  E21B44/00 ,  E21B47/12 ,  E21B7/04 ,  E21B12/02 ,  E21B47/08 ,  E21B33/14 ,  E21B47/18

Abstract: Disclosed embodiments include a method for estimating casing wear including the operations of: obtaining locations of survey 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.

公开(公告)号：US10423731B2

公开(公告)日：2019-09-24

申请号：US14902242

申请日：2015-05-07

Applicant: Landmark Graphics Corporation

Inventor： Zhengchun Liu ,  Robello Samuel ,  Adolfo Gonzales ,  Yongfeng Kang

IPC: G06F17/50 ,  E21B41/00 ,  G06F17/11 ,  E21B34/06

Abstract: A method for simulating the effects of rupture disk failure on annular fluid expansion in sealed and open annuli to mitigate annular pressure buildup in a wellbore comprises the steps of: determining whether an internal region or an external region for a pair of casing string annuli is open; and calculating at least one of an adjusted internal annular pressure buildup and an adjusted external annular pressure buildup for at least one of the internal annular region and the external annular region of the casing string annuli.