公开(公告)号：US11550975B2

公开(公告)日：2023-01-10

申请号：US16940436

申请日：2020-07-28

Applicant: Schlumberger Technology Corporation ,  Saudi Arabian Oil Company

Inventor： Sharath Chandra Mahavadi ,  Robin Singh ,  Wael Abdallah ,  Mohammed Al-Hamad ,  Bastian Sauerer ,  Shouxiang Ma ,  Leilei Zhang

IPC: G01N33/28 ,  E21B49/08 ,  G06F30/27 ,  G01N11/00 ,  G01N9/00 ,  G01V99/00 ,  E21B47/07 ,  G06F111/10 ,  E21B41/02 ,  E21B49/10 ,  E21B43/38

Abstract: Methods and systems are provided for characterizing interfacial tension (IFT) of reservoir fluids, which involves obtaining fluid property data that represents fluid properties of a reservoir fluid sample measured downhole at reservoir conditions, and inputting the fluid property data to a computational model that determines a value of oil-water IFT of the reservoir fluid sample based on the fluid property data. In embodiments, the fluid property data represents single-phase fluid properties of the reservoir fluid sample, such as fluid density and viscosity of an oil phase of the reservoir fluid sample and fluid density of a water phase of the reservoir fluid sample. In embodiments, the computation model can be based on machine learning or analytics combined with a thermodynamics-based physics model.

公开(公告)号：US20220035971A1

公开(公告)日：2022-02-03

申请号：US16940436

申请日：2020-07-28

Applicant: Schlumberger Technology Corporation

Inventor： Sharath Chandra Mahavadi ,  Robin Singh ,  Wael Abdallah ,  Mohammed Al-Hamad ,  Bastian Sauerer ,  Shouxiang Ma ,  Leilei Zhang

IPC: G06F30/27 ,  G01N11/00 ,  G01N9/00 ,  G01N33/28 ,  G01V99/00 ,  E21B49/08 ,  E21B47/07

Abstract: Methods and systems are provided for characterizing interfacial tension (IFT) of reservoir fluids, which involves obtaining fluid property data that represents fluid properties of a reservoir fluid sample measured downhole at reservoir conditions, and inputting the fluid property data to a computational model that determines a value of oil-water IFT of the reservoir fluid sample based on the fluid property data. In embodiments, the fluid property data represents single-phase fluid properties of the reservoir fluid sample, such as fluid density and viscosity of an oil phase of the reservoir fluid sample and fluid density of a water phase of the reservoir fluid sample. In embodiments, the computation model can be based on machine learning or analytics combined with a thermodynamics-based physics model.

公开(公告)号：US11169114B2

公开(公告)日：2021-11-09

申请号：US15304643

申请日：2015-01-20

Applicant: Schlumberger Technology Corporation

Inventor： Sharath Chandra Mahavadi ,  Simon Ivar Andersen ,  Olivier Porcherie ,  Isabelle Couillet

IPC: G01N27/447 ,  E21B41/00 ,  E21B49/00 ,  E21B33/14

Abstract: The current application discloses methods and systems to analyze on-site and in real-time or quasi real-time the composition of the well fluid before or during use or disposition. The method is based on capillary electrophoresis (CE) and does not require the addition of tracers into the well fluid or additive. Based on the significance of each additive on the well fluid properties, it can be decided to determine the concentration of all additives or only one or a limited number of the additives present in the fluid, and the concentrations can be adjusted as needed to reach the desired target concentration(s).

公开(公告)号：US10907090B2

公开(公告)日：2021-02-02

申请号：US15766473

申请日：2016-07-26

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Francois Auzerais ,  Meng Qu ,  Shitong S. Zhu ,  Agathe Robisson ,  Yucun Lou ,  Syed Afaq Ali ,  Bruce Alexander Mackay ,  Sandeep Verma ,  Sharath Chandra Mahavadi

IPC: C09K8/68 ,  E21B43/267 ,  C09K8/70 ,  C09K8/94 ,  C09K8/62 ,  C09K8/60 ,  C09K8/80

Abstract: Methods include introducing a multistage treatment fluid into one or more intervals of a wellbore, wherein the treatment fluid contains one or more stages of a polymer-forming composition and one or more stages of a spacer fluid and initiating polymerization of the one or more stages of polymer-forming composition. Methods may include designing a multistage treatment fluid containing one or more stages of a polymer-forming composition and one or more stages of a spacer fluid, wherein or more stages of the polymer-forming composition comprises a thermosetting polymer; and pumping the multistage treatment fluid into a wellbore, wherein the pumping rate is determined by constructing a model based upon (a) the minimum pumping rate determined from the critical reaction temperature and the downhole temperature, (b) the fracture closing time, (c) the temperature within one or more fractures, and (d) the maximum pumping rate.

公开(公告)号：US20150114837A1

公开(公告)日：2015-04-30

申请号：US14398961

申请日：2013-06-13

Applicant: Schlumberger Technology Corporation

Inventor： Sharath Chandra Mahavadi ,  Geza Horvath Szabo ,  Simon Ivar Andersen

IPC: E21B49/08 ,  G01N27/447

CPC classification number: E21B49/08 ,  E21B49/081 ,  G01N27/44704 ,  G01N27/44717 ,  G01N27/44782 ,  G01N27/44791 ,  G01N2030/8854

Abstract: A method improves the capability for testing a fluid sample, e.g. testing a reservoir sample of hydrocarbon fluid. The methodology comprises positioning a capillary electrophoresis system within an enclosed chamber system. The enclosed chamber system preserves the desired downhole reservoir conditions during testing of the reservoir sample. In some applications, the reservoir sample is divided into a plurality of capillaries of the capillary electrophoresis system to enable testing of the reservoir sample with different types of detectors in one capillary electrophoresis system. The method can also be applied to depressurized reservoir samples.

Abstract translation: 一种方法提高了测试流体样品的能力，例如 测试烃流体的储层样品。 该方法包括将毛细管电泳系统定位在封闭室系统内。 封闭室系统在储层样品测试期间保留了所需的井下储层条件。 在一些应用中，储存器样品被分成毛细管电泳系统的多个毛细管，以使得能够在一个毛细管电泳系统中使用不同类型的检测器来测试储存器样品。 该方法也可应用于减压储层样品。