公开(公告)号：US11326443B2

公开(公告)日：2022-05-10

申请号：US16497789

申请日：2018-04-30

Applicant: Schlumberger Technology Corporation

Inventor： Shingo Watanabe ,  Frode Bratvedt ,  Matthew Worthington ,  Vadim Blekhman

IPC: E21B47/098 ,  G01V1/48 ,  G01V99/00 ,  E21B47/107

Abstract: Reservoir sweep efficiency includes obtaining fluid front arrival times for streamlines in a reservoir. A wellbore is partitioned into independent production zones, and a target flow rate is allocated to each of the independent production zones based on the fluid front arrival times. Partition choke parameters complying with the target flow rates are allocated to generate a completion design, which is presented.

公开(公告)号：US20220228466A1

公开(公告)日：2022-07-21

申请号：US17595601

申请日：2019-05-28

Applicant: Schlumberger Technology Corporation

Inventor： Shingo Watanabe ,  Frode Bratvedt ,  Matthew Worthington ,  Trevor Graham Tonkin

IPC: E21B43/16 ,  E21B43/14 ,  E21B43/12

Abstract: Using a reservoir simulator, a reservoir model state is obtained. The reservoir model state is used to trace streamlines to obtain streamline trajectories and detect fluid fronts along the streamlines. Using the streamline trajectories, the streamlines are connected to wells. The streamlines are grouped for multiple granularity levels, into groups to obtain a grouping hierarchy. Through the granularity levels of the grouping hierarchy, fluid front time of flights are determined for the groups, and target flowrates assigned to completion devices based on the fluid front time of flights to obtain target flow rates. A completion design is presented that incorporates the target flowrates.

公开(公告)号：US12146395B2

公开(公告)日：2024-11-19

申请号：US17595601

申请日：2019-05-28

Applicant: Schlumberger Technology Corporation

Inventor： Shingo Watanabe ,  Frode Bratvedt ,  Matthew Worthington ,  Trevor Graham Tonkin

IPC: E21B43/16 ,  G06F30/28 ,  G06F113/08

Abstract: Using a reservoir simulator, a reservoir model state is obtained. The reservoir model state is used to trace streamlines to obtain streamline trajectories and detect fluid fronts along the streamlines. Using the streamline trajectories, the streamlines are connected to wells. The streamlines are grouped for multiple granularity levels, into groups to obtain a grouping hierarchy. Through the granularity levels of the grouping hierarchy, fluid front time of flights are determined for the groups, and target flowrates assigned to completion devices based on the fluid front time of flights to obtain target flow rates. A completion design is presented that incorporates the target flowrates.

公开(公告)号：US20230214554A1

公开(公告)日：2023-07-06

申请号：US18174058

申请日：2023-02-24

Applicant: Schlumberger Technology Corporation

Inventor： Zhuoyi Li ,  Antonina Kozlova ,  Shingo Watanabe ,  Kyrre Bratvedt ,  Jostein Natvig ,  Matei Tene

IPC: E21B49/00 ,  E21B44/00

CPC classification number: E21B49/008 ,  E21B44/00 ,  E21B2200/20 ,  E21B2200/22

Abstract: Improved reservoir simulation methods and systems are provided that employ a new velocity model in conjunction with a sequential implicit (SI) formulation or Sequential Fully Implicit (SF) formulation for solving the discrete form of the system of nonlinear partial differential equations. In embodiments, the new velocity model employs a fluid transport equation part based on calculation of phase velocity for a number of fluid phases that involves capillary pressure and a modification coefficient. In embodiments, the modification coefficient can be based on a derivative of capillary pressure with respect to saturation. In another aspect, the new velocity model can employ an estimate of the phase velocity of the water phase vw_est that is based on one or more derivatives of capillary pressure of the water phase as a function of water saturation.

公开(公告)号：US11585192B2

公开(公告)日：2023-02-21

申请号：US17250784

申请日：2018-09-11

Applicant: Schlumberger Technology Corporation

Inventor： Trevor Graham Tonkin ,  Shingo Watanabe ,  Matthew Worthington ,  Mohamed Osman Mahgoub Ahmed

IPC: E21B34/16 ,  E21B43/12 ,  E21B47/00

Abstract: A method includes obtaining a reservoir model for a subsurface reservoir, identifying a current state of the subsurface reservoir using the reservoir model, and a computer processor selecting an optimization function from multiple optimization functions according to the current state of the reservoir to obtain a selected optimization function. The method further includes the computer processor calculating valve positions of physical devices using the selected optimization function. The valve positions are implemented.

公开(公告)号：US11474858B2

公开(公告)日：2022-10-18

申请号：US16306894

申请日：2017-06-22

Applicant: Schlumberger Technology Corporation

Inventor： Antonina Kozlova ,  Jostein Natvig ,  Dominic Walsh ,  Kyrre Bratvedt ,  Sindhu Chittireddy ,  Zhuoyi Li ,  Shingo Watanabe

IPC: G06F3/00 ,  G06F9/48 ,  G06F9/38

Abstract: Systems, computer-readable media, and methods for performing a reservoir simulation by obtaining reservoir data; translating the reservoir data into grid properties to create a grid; dividing the grid into domains; generating coarse grids corresponding to each domain; processing the domains, where processing a domain includes: calculating pressure for the domain using a coarse grid corresponding to the domain, calculating flux for the domain using a coarse grid corresponding to the domain, and calculating transport of fluids for the domain using a coarse grid corresponding to the domain; and generating a reservoir simulation corresponding to the grid based on processing each domain. The domains can be processed in parallel on different computer systems, different processors, or different cores.

公开(公告)号：US20230119861A1

公开(公告)日：2023-04-20

申请号：US17506347

申请日：2021-10-20

Applicant: Chevron U.S.A. Inc. ,  Schlumberger Technology Corporation

Inventor： Shingo Watanabe ,  Jostein Natvig ,  Pavel Tomin

IPC: E21B47/00

Abstract: A subsurface representation may define subsurface configuration of a subsurface region. A grid connectivity graph for the subsurface representation may include (1) nodes that represent cells within the subsurface representation, and (2) edges between the nodes that represent connectivity between the cells within the subsurface representation. The grid connectivity graph may be filtered to remove edges that do not satisfy a connectivity criterion. The filtered grid connectivity graph may be used to compute a linear solver preconditioner that improves the performance of the subsurface simulation.

公开(公告)号：US20210198985A1

公开(公告)日：2021-07-01

申请号：US17250784

申请日：2018-09-11

Applicant: Schlumberger Technology Corporation

Inventor： Trevor Graham Tonkin ,  Shingo Watanabe ,  Matthew Worthington ,  Mohamed Osman Mahgoub Ahmed

IPC: E21B43/12 ,  E21B47/00 ,  E21B34/16

Abstract: A method includes obtaining a reservoir model for a subsurface reservoir, identifying a current state of the subsurface reservoir using the reservoir model, and a computer processor selecting an optimization function from multiple optimization functions according to the current state of the reservoir to obtain a selected optimization function. The method further includes the computer processor calculating valve positions of physical devices using the selected optimization function. The valve positions are implemented.

公开(公告)号：US20210110088A1

公开(公告)日：2021-04-15

申请号：US16948279

申请日：2020-09-11

Applicant: Schlumberger Technology Corporation

Inventor： Zhuoyi Li ,  Antonina Kozlova ,  Shingo Watanabe ,  Kyrre Bratvedt ,  Jostein Natvig ,  Matei Tene

IPC: G06F30/20 ,  G01V99/00

Abstract: Improved reservoir simulation methods and systems are provided that employ a new velocity model in conjunction with a sequential implicit (SI) formulation or Sequential Fully Implicit (SF) formulation for solving the discrete form of the system of nonlinear partial differential equations. In embodiments, the new velocity model employs a fluid transport equation part based on calculation of phase velocity for a number of fluid phases that involves capillary pressure and a modification coefficient. In embodiments, the modification coefficient can be based on a derivative of capillary pressure with respect to saturation. In another aspect, the new velocity model can employ an estimate of the phase velocity of the water phase νw_est that is based on one or more derivatives of capillary pressure of the water phase as a function of water saturation.