公开(公告)号：US11755795B2

公开(公告)日：2023-09-12

申请号：US16133983

申请日：2018-09-18

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Feng Xiao ,  Neeraj R. Dani ,  Ted A. Long ,  Justin A. Gantt ,  Zachary H. Borden ,  Amr El-Bakry ,  Curtis J. Holub

IPC: G06F30/28 ,  E21B47/10 ,  E21B43/12 ,  G06F30/20 ,  E21B47/07 ,  E21B47/008 ,  E21B41/00 ,  E21B47/06 ,  G06F111/10

CPC classification number: G06F30/28 ,  E21B41/00 ,  E21B43/122 ,  E21B47/008 ,  E21B47/07 ,  E21B47/10 ,  G06F30/20 ,  E21B47/06 ,  G06F2111/10

Abstract: A method of detecting and mitigating flow instabilities, such as slugging, in hydrocarbon production wells. Real-time production data pertaining to each well is are retrieved. Using the production data, patterns of flow instability are identified therein. A numerical model of transient and thermal multiphase flow in each well is generated. Well test data is are retrieved from a database. The numerical model is calibrated using the well test data. Using the calibrated numerical model, a parametric study is performed to determine how input parameters affect at least one of stability and performance of the wells. Results of the parametric study are queried to determine a type of flow instability and to determine operating conditions to improve performance of the wells. An advisory is provided to a user to change operating conditions of one or more of the wells, to improve stability and/or performance of one or more of the wells.

公开(公告)号：US11686184B2

公开(公告)日：2023-06-27

申请号：US16901455

申请日：2020-06-15

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Marco De Mattia ,  Mahsa Memarzadeh ,  Curtis J. Holub ,  Amr S. El-Bakry

IPC: E21B43/12 ,  E21B47/008

CPC classification number: E21B43/122 ,  E21B47/008 ,  E21B2200/20

Abstract: A method for producing hydrocarbons in a gas lift well is disclosed. A gas lift rate of the well is monitored while producing hydrocarbons according to an initial gas lift performance curve. One or more well performance parameters for the well are monitored. Disturbances in the well are detected while monitoring the well performance parameters. Transience in the well is modeled. A new gas lift performance curve is derived based on the detected disturbances, the modeled transience, and the initial gas lift performance curve. An optimal allocation of gas lift is determined from the new gas lift performance curve. Hydrocarbons are produced using the determined optimal allocation of gas lift.

公开(公告)号：US11674366B2

公开(公告)日：2023-06-13

申请号：US16436402

申请日：2019-06-10

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Sumeet Trehan ,  Damian N. Burch ,  Amr S. El-Bakry ,  Peeyush Bhargava ,  Curtis J. Holub ,  Jose F. Zapata Usandivaras

IPC: E21B41/00 ,  E21B43/12 ,  E21B49/08 ,  E21B47/008

CPC classification number: E21B41/0092 ,  E21B43/128 ,  E21B47/008 ,  E21B49/08 ,  E21B49/0875

Abstract: A method of predicting hydrocarbon production from one or more artificial lift wells is disclosed. Measurements and/or well test data are obtained from one or more artificial lift wells representing well performance at more than one time period. A statistical model, representing well performance, is generated. Using the statistical model and the measurements and/or well test data, real-time production of the one or more artificial lift wells is predicted and a measure of confidence is generated. Potential optimization opportunities are identified for well performance based on the predicted real-time production of the one or more artificial lift wells. The optimization opportunities are outputted. Hydrocarbon production activities are modified using the optimization opportunities.