公开(公告)号：US20210198988A1

公开(公告)日：2021-07-01

申请号：US16727718

申请日：2019-12-26

Applicant: Schlumberger Technology Corporation

Inventor： Terizhandur S. Ramakrishnan ,  William J. Bailey ,  Kashif Rashid

IPC: E21B43/12 ,  G01F1/78 ,  E21B45/00 ,  E21B44/06

Abstract: Methods and systems are provided for controlling gas lift in at least one production well, which determine a quadratic function that relates flow rate or value of oil produced from a production well to gas flow rate for gas injected into the production well based on flow rate measurements for gas injected into the production well and corresponding flow rate measurements of oil produced from the production well. The quadratic function is used to determine an optimal flow rate for gas injected into the production well. The optimal flow rate for gas injected into the production well is used to control the flow rate of gas injected into the production well, and an oil flow rate produced from the production well is measured at the optimal gas flow rate for iterative processing to refine the quadratic function and determination of optimal gas flow rate if need be.

公开(公告)号：US10989835B2

公开(公告)日：2021-04-27

申请号：US14762828

申请日：2014-01-13

Applicant: Schlumberger Technology Corporation

Inventor： William J. Bailey ,  Benoit Couet ,  Peter Kaufman ,  Oliver C. Mullins

IPC: E21B49/08 ,  G01V99/00 ,  G01V11/00 ,  E21B49/10 ,  E21B49/00

Abstract: A method for deriving VOI for a hydrocarbon-bearing reservoir fluid model based on DFA data (“true fluid model”) versus an “incorrect fluid model” includes calculating first, second and third objective functions that are based on NPV(s) of simulated production by a reservoir simulator with different configurations. For the first objective function, the simulator is configured with the incorrect fluid model and control variables that are optimized to derive a first group of control variable values. For the second objective function, the simulator is configured with the true fluid model and the first group of control variable values. For the third objective function, the simulator is configured with the true fluid model and control variables that are optimized to identify a second group of control variable values. The objective functions can be deterministic, or can include statistics that account for uncertainty. A visualization of such results with uncertainty is also described.

公开(公告)号：US10767448B2

公开(公告)日：2020-09-08

申请号：US15109671

申请日：2015-01-06

Applicant: Schlumberger Technology Corporation

Inventor： Hugues A. Djikpesse ,  Kashif Rashid ,  William J. Bailey ,  Michael David Prange ,  Benoit Couet

IPC: G06G7/48 ,  E21B41/00 ,  E21B43/00 ,  G06Q10/06 ,  G06F30/20 ,  E21B43/26 ,  E21B43/267 ,  E21B47/00 ,  E21B49/00 ,  G05B13/04 ,  G06Q50/02 ,  G06G7/50 ,  G06N3/04 ,  H04W16/12 ,  G06F30/00 ,  G06F111/06

Abstract: Managing oilfield operations include obtaining a subsurface model including a fracture design model having an fracture property with an uncertain value. A set of representative values that represent uncertainty in the fracture property is obtained and used to solve an oilfield optimization problem with a control variable to obtain a solution. The solution includes an optimal value for the control variable. Based on the solution, an oilfield design is generated and stored.

公开(公告)号：US20170336811A1

公开(公告)日：2017-11-23

申请号：US15156573

申请日：2016-05-17

Applicant: Schlumberger Technology Corporation

Inventor： Terry Wayne Stone ,  Kashif Rashid ,  William J. Bailey ,  Peter Wardell-Yerburgh ,  Peter Tilke

IPC: G05D7/06 ,  E21B34/06 ,  E21B41/00 ,  G06F17/50

CPC classification number: E21B41/0092 ,  E21B43/12

Abstract: A method, apparatus, and program product generate a flow control device design for well completions in one or more wells of an oilfield in part by equipping a reservoir simulation model with multiple flow control device proxies represented by one or more generalized expressions for pressure drop including multiple tunable parameters associated with various physical flow control devices. Multiple reservoir simulations are then run using the reservoir simulation model to optimize an objective function based on at least a subset of the tunable parameters such that an optimal set of values determined from the optimization may be used to select flow control device types for the well completions.

公开(公告)号：US20150339411A1

公开(公告)日：2015-11-26

申请号：US14285014

申请日：2014-05-22

Applicant: Schlumberger Technology Corporation

Inventor： Scott Trevor Raphael ,  Benoit Couet ,  William J. Bailey ,  Kashif Rashid ,  Peter Gerhard Tilke

IPC: G06F17/50 ,  G06F17/18

CPC classification number: G06F17/50 ,  E21B43/30 ,  G06F17/18 ,  G06Q10/04 ,  G06Q10/06 ,  G06Q50/02

Abstract: A method, apparatus, and program product automatically generate a surface network for an oilfield production system, e.g., as a new surface network or as an addition to an existing surface network. Candidate surface networks are generated from control vectors proposed by an optimization engine to optimize based upon an objective function that is based at least upon one or more geographical cost functions and one or more boundary conditions.

Abstract translation: 方法，装置和程序产品自动生成用于油田生产系统的表面网络，例如作为新的表面网络或作为对现有表面网络的补充。 候选表面网络由优化引擎提出的控制向量生成，以基于至少基于一个或多个地理成本函数和一个或多个边界条件的目标函数进行优化。