公开(公告)号：US20210131988A1

公开(公告)日：2021-05-06

申请号：US17084791

申请日：2020-10-30

申请人： Salah Al-Ofi ,  Hasan Kesserwan ,  Guodong Jin

发明人： Salah Al-Ofi ,  Hasan Kesserwan ,  Guodong Jin

IPC分类号： G01N27/02

摘要： Systems and methods to evaluate a formation by analyzing drill cuttings involve a multi-frequency dielectric coaxial probe to obtain a reflected voltage from a medium under test based on a reference voltage over a frequency range. The medium under test includes the drill cuttings. The system includes a processor to compute an effective permittivity of the drill cuttings over the frequency range based on a reflection coefficient, which is a ratio of the reflected voltage to the reference voltage over the frequency range, and to determine one or more parameters from the effective permittivity. The one or more parameters are used to make decisions about subsequent drilling in the formation.

公开(公告)号：US20220341858A1

公开(公告)日：2022-10-27

申请号：US17237507

申请日：2021-04-22

申请人： Hasan Kesserwan ,  Shouxiang Ma ,  Gabor Hursan

发明人： Hasan Kesserwan ,  Shouxiang Ma ,  Gabor Hursan

IPC分类号： G01N24/08 ,  G01V3/32 ,  G01R33/50

摘要： A method of estimating a wettability characteristic of a rock and fluid system includes acquiring a sample of the rock material, performing a first nuclear magnetic resonance (NMR) measurement of the sample when the sample is in a full water saturation condition, and measuring a first T2 distribution, performing a second NMR measurement of the sample when the sample is in a second partial saturation condition, and measuring a second T2 distribution. The method also includes separating a hydrocarbon component of the second T2 distribution from a water component of the second T2 distribution, applying a fluid substitution model to the water component of the second T2 distribution to generate a computed T2 distribution, and calculating a wettability index (WI) based on a difference between the first T2 distribution and the computed T2 distribution.

公开(公告)号：US20170167246A1

公开(公告)日：2017-06-15

申请号：US15379225

申请日：2016-12-14

申请人： Naeem-Ur-Rehman Minhas ,  Hasan Kesserwan ,  Gaurav Agrawal ,  Asok J. Nair

发明人： Naeem-Ur-Rehman Minhas ,  Hasan Kesserwan ,  Gaurav Agrawal ,  Asok J. Nair

IPC分类号： E21B47/10 ,  G01F15/06 ,  E21B47/12 ,  E21B21/08 ,  E21B47/06

CPC分类号： E21B47/10 ,  E21B21/08 ,  E21B47/06 ,  E21B47/065 ,  E21B47/12 ,  G01F15/06

摘要： A system and method for estimating a fluid loss in a borehole while drilling are disclosed. A drill string disposed in the borehole. A first sensor of the drill string is configured to obtain a first fluid parameter measurement at a first location along the drill string. A second sensor of the drill string is configured to obtain a second fluid parameter measurement at a second location axially separated from the first location. A processor estimates a fluid loss along the drill string using the first fluid parameter measurement and the second fluid parameter measurement performs an action in response to the estimated fluid loss.