公开(公告)号：US20250110050A1

公开(公告)日：2025-04-03

申请号：US18898774

申请日：2024-09-27

Applicant: Schlumberger Technology Corporation

Inventor： Kai Hsu ,  Hua Chen ,  Richard Jackson ,  Evgeniya Deger

IPC: G01N21/3577 ,  G01N1/14 ,  G01N21/35 ,  G01N33/28 ,  G01N35/00

Abstract: In some embodiments, a process can include obtaining a first formation fluid sample using a sample-line of a focused fluid sampling system and obtaining a second formation fluid sample using a guard-line of the focused fluid sampling system. The process can also include measuring a first optical density spectrum of the first formation fluid sample and measuring a second optical density spectrum of the second formation fluid sample. The process can also include decolorizing the first and second optical density spectrums to produce a decolorized first spectrum and a decolorized second spectrum, respectively. The process can also include normalizing the first and second decolorized spectrums to provide a first normalized spectrum and a second normalized spectrum. The process can also include determining a difference between the first and the second normalized spectrums to provide a sampling difference and adjusting a fluid sampling operation based on the sampling difference.

公开(公告)号：US11732581B2

公开(公告)日：2023-08-22

申请号：US17479295

申请日：2021-09-20

Applicant: Schlumberger Technology Corporation

Inventor： Miroslav Slapal ,  Christopher Albert Babin ,  Daniel Palmer ,  Kai Hsu ,  Anthony Robert Holmes Goodwin ,  Julian Pop ,  Nathan Mathew Landsiedel ,  Adriaan Gisolf

IPC: E21B49/10 ,  E21B49/08 ,  E21B34/10 ,  E21B21/10

CPC classification number: E21B49/088 ,  E21B21/10 ,  E21B34/10 ,  E21B49/081

Abstract: A method includes positioning a downhole acquisition tool in a wellbore in a geological formation. The method includes operating a pump module to gather information for a fluid outside of the downhole acquisition tool that enters the downhole acquisition tool from a first flowline, a second flowline, or both while the downhole acquisition tool is within the wellbore. Operating the pump module includes controlling a valve assembly to a first valve configuration that enables the fluid to flow into the downhole tool via the first flowline fluidly coupled to a first pump module. Operating the pump module includes controlling a valve assembly to a second valve configuration that enables the fluid to flow into the downhole tool via the second flowline fluidly coupled to a second pump module, and selectively using a turnaround module or a crossover portion disposed between the first flowline and the second flowline to permit discharging the fluid from one flowline to the other flowline by actuating a valve associated with the turnaround module when the first pump module or the second pump module is not in use.

公开(公告)号：US20220349302A1

公开(公告)日：2022-11-03

申请号：US17755090

申请日：2020-10-22

Applicant: Schlumberger Technology Corporation

Inventor： Shahnawaz Hossain Molla ,  Farshid Mostowfi ,  John Nighswander ,  Adriaan Gisolf ,  Kai Hsu ,  Shunsuke Fukagawa ,  Thomas Pfeiffer

IPC: E21B49/08 ,  G01N21/31 ,  G01N33/28

Abstract: Embodiments present a method for fluid type identification from a downhole fluid analysis that uses machine learning techniques that are trained and derived from a computer model using pressure, temperature and downhole optical characteristics of sampled fluid. The method comprises collecting optical spectral data for a downhole fluid; providing the collected optical spectral data to a trained classification module; processing the collected optical spectral data with the trained classification module configured to determine a fluid type classification; and determining a fluid type based upon the classification based upon the trained classification module.

公开(公告)号：US11408244B2

公开(公告)日：2022-08-09

申请号：US16720144

申请日：2019-12-19

Applicant: Schlumberger Technology Corporation

Inventor： Bo Yang ,  Kai Hsu ,  Deopaul Dindial

IPC: E21B33/127 ,  G01L19/06 ,  E21B47/06 ,  E21B33/12

Abstract: The disclosure provides for a method for setting an inflatable packer. The method includes positioning an inflatable packer within a borehole, and pumping fluid into an inflatable element of the inflatable packer using a pump that is driven by a motor. The method includes measuring pressure of the inflatable element, determining a derivative of the measured pressure with respect to time, and determining onset of restraining of the inflatable element has occurred. Upon or after determining the onset of restraining, the method includes turning off the motor or slowing down an rpm of the motor. The disclosure also provides for a system, including a computer readable medium with processor-executable instructions stored thereon that are configured to instruct a processor to execute a pressure control algorithm to control a speed of the motor in response to pressure measurement data from the pressure sensor.

公开(公告)号：US10731460B2

公开(公告)日：2020-08-04

申请号：US14263893

申请日：2014-04-28

Applicant: Schlumberger Technology Corporation

Inventor： Youxiang Zuo ,  Adriaan Gisolf ,  Kai Hsu ,  Li Chen ,  Beatriz Barbosa

IPC: G01V1/40 ,  G01V3/18 ,  G01V5/04 ,  G01V9/00 ,  E21B49/08

Abstract: A downhole tool is operated to pump fluid from a subterranean formation while obtaining fluid property measurements pertaining to the pumped fluid. The downhole tool is in communication with surface equipment located at the wellsite surface. The downhole tool and/or surface equipment is operated to estimate a first linear, exponential, logarithmic, and/or other relationship between compressibility and pressure of the pumped fluid based on the fluid property measurements. The downhole tool and/or surface equipment may also be operated to estimate a second linear, exponential, logarithmic, and/or other relationship between formation volume factor and pressure of the pumped fluid based on the first relationship. The downhole tool and/or surface equipment may also be operated to measure and correct optical density of the pumped fluid based on the first relationship.

公开(公告)号：US10295449B2

公开(公告)日：2019-05-21

申请号：US14574381

申请日：2014-12-17

Applicant: Schlumberger Technology Corporation

Inventor： Kai Hsu ,  Florian Risser ,  Gocha Chochua ,  Haitao Zhang

IPC: G01N9/00 ,  E21B47/10 ,  G01N11/16 ,  G01N29/036 ,  G01N29/22 ,  G01N29/44

Abstract: Methods and apparatus for obtaining data from a density-viscosity (DV) sensor of a downhole tool, wherein the DV sensor comprises a resonating element disposed in a fluid flowing in a flowline of the downhole tool, and determining a resonance frequency and quality factor of the resonating element utilizing a nonlinear regression and/or a plurality of resonance modes exhibited by the obtained data.

公开(公告)号：US10241030B2

公开(公告)日：2019-03-26

申请号：US14359345

申请日：2012-11-30

Applicant: Schlumberger Technology Corporation

Inventor： Kentaro Indo ,  Kai Hsu ,  Julian Pop

IPC: G01V8/12 ,  E21B49/08 ,  G01N21/25

Abstract: An optical spectrometer includes a near black body light source, a reference detector in a first optical path and a single measurement detector in a second optical path. A sample cell including a fluid flow line may be positioned in the second optical path upstream of the measurement detector. Optical energy may be emitted at a plurality of filament temperatures and first and second sets of optical intensities measured at the reference and measurement detectors. The first and second sets of optical intensities may be processed to compute a substantially continuous transmittance spectrum of a fluid sample in the fluid flow line by inverting the acquired optical intensity measurements.

公开(公告)号：US09932824B2

公开(公告)日：2018-04-03

申请号：US14919426

申请日：2015-10-21

Applicant: Schlumberger Technology Corporation

Inventor： Bo Yu ,  Kai Hsu ,  Julian Pop ,  Kentaro Indo

IPC: G01V3/00 ,  E21B47/12

CPC classification number: E21B47/123 ,  E21B47/102 ,  E21B47/18

Abstract: A method for transmitting data from a downhole tool is provided. In one embodiment, the method includes acquiring data for a formation fluid through downhole fluid analysis with a downhole tool in a well. The acquired data can include optical spectrum data measured with a spectrometer and other data. The method also includes generating time blocks of the acquired data and transmitting the time blocks from the downhole tool. More particularly, generating the time blocks may include compressing at least some of the optical spectrum data according to a first compression technique and compressing at least some of the other data according to one or more additional compression techniques. The compressed data can be packaged into the time blocks such that at least some of the time blocks include both compressed optical spectrum data and compressed other data for the formation fluid. Additional methods, systems, and devices are also disclosed.

公开(公告)号：US20170370215A1

公开(公告)日：2017-12-28

申请号：US15624735

申请日：2017-06-16

Applicant: Schlumberger Technology Corporation

Inventor： Kai Hsu ,  Elizabeth Jennings Smythe ,  Matthew Sullivan ,  Christopher Harrison ,  Hua Chen

IPC: E21B49/08 ,  E21B47/06 ,  E21B49/10

CPC classification number: E21B49/088 ,  E21B47/06 ,  E21B47/065 ,  E21B49/082 ,  E21B49/10 ,  E21B2049/085

Abstract: Apparatus and methods for obtaining a data response of a fluid as a function of pressure of the fluid, and estimating a dew point pressure of the fluid by detecting an inflection pressure, a downward curve pressure, a characteristic change pressure, and an intersection pressure of the function representative of the data response. The estimated dew point pressure of the fluid based on at least one of the inflection pressure, the downward curve pressure, the characteristic change pressure, and the intersection pressure.

公开(公告)号：US20170002644A1

公开(公告)日：2017-01-05

申请号：US14755198

申请日：2015-06-30

Applicant: Schlumberger Technology Corporation

Inventor： Lei Chen ,  Kent David Harms ,  Kai Hsu

IPC: E21B47/00 ,  E21B47/06 ,  E21B49/08 ,  E21B49/00

CPC classification number: E21B47/0007 ,  E21B49/08

Abstract: Systems, methods, and devices for predicting pump performance in a downhole tool are provided. A pump performance predictor may receive inputs and generate outputs that predict the performance of a pump of a pumpout module of a downhole tool. The pump performance predictor may calculate and output a set of first predictions that include, for example, the minimum alternator voltage of a power module used to power the electronics of the pumpout module, the maximum pump flowrate, the pumpout performance, and the achievable formation mobility. The pump performance predictor may also calculate and output a set of second predictions that may include, for example, a pump volume efficiency, a pressure profile in a flowline, the number of strokes to fill a sampling bottle, and the time to fill the sampling bottle.

Abstract translation: 提供了一种用于在井下工具中预测泵性能的系统，方法和装置。 泵性能预测器可以接收输入并产生预测井下工具的泵送模块的泵的性能的输出。 泵性能预测器可以计算和输出一组第一预测，其包括例如用于为抽油机模块的电子装置供电的功率模块的最小交流发电机电压，最大泵流量，抽出性能和可实现的形成 流动性 泵性能预测器还可以计算和输出一组第二预测，其可以包括例如泵体积效率，流线中的压力分布，填充采样瓶的冲程数以及填充采样的时间 瓶子。