公开(公告)号：US10731457B2

公开(公告)日：2020-08-04

申请号：US15625415

申请日：2017-06-16

Applicant: Saudi Arabian Oil Company

Inventor： Sunder Ramachandran ,  Aydin Babakhani

IPC: E21B47/04 ,  G01S13/88 ,  G01F23/284

Abstract: A method of wellbore analysis using TM01 and TE01 modes of radar waveforms can include transmitting, at a first time, a radar waveform from a wellhead into a tubing disposed in a wellbore positioned in a reservoir. The radar waveform is either a TM01 mode or a TE01 mode waveform. The tubing includes a fluid, and the surface of the wellbore includes the wellhead. At a second time, a reflected waveform generated by reflecting the transmitted radar waveform on a fluid surface of the fluid is received at the wellhead. A fluid level of the fluid is determined based on the time difference between the first time and the second time, and on a transmission speed of the radar waveform from the wellhead to the fluid surface. The fluid level is a distance between the wellhead and the fluid surface of the fluid.

公开(公告)号：US20180010441A1

公开(公告)日：2018-01-11

申请号：US15625415

申请日：2017-06-16

Applicant: Saudi Arabian Oil Company

Inventor： Sunder Ramachandran ,  Aydin Babakhani

IPC: E21B47/04 ,  G01F23/284

Abstract: A method of wellbore analysis using TM01 and TE01 modes of radar waveforms can include transmitting, at a first time, a radar waveform from a wellhead into a tubing disposed in a wellbore positioned in a reservoir. The radar waveform is either a TM01 mode or a TE01 mode waveform. The tubing includes a fluid, and the surface of the wellbore includes the wellhead. At a second time, a reflected waveform generated by reflecting the transmitted radar waveform on a fluid surface of the fluid is received at the wellhead. A fluid level of the fluid is determined based on the time difference between the first time and the second time, and on a transmission speed of the radar waveform from the wellhead to the fluid surface. The fluid level is a distance between the wellhead and the fluid surface of the fluid.

公开(公告)号：US20170226843A1

公开(公告)日：2017-08-10

申请号：US15423158

申请日：2017-02-02

Applicant: Saudi Arabian Oil Company

Inventor： Vladimir Jovancicevic ,  Sunder Ramachandran ,  Amro Mukhles ,  Irfan Syafii

IPC: E21B47/00 ,  G01N17/04 ,  E21B41/02

CPC classification number: E21B47/00 ,  E21B17/042 ,  E21B41/02 ,  G01N17/046

Abstract: A tool for monitoring conditions within a subterranean well includes a first body segment, the first body segment being an elongated member with an axial protrusion having a reduced outer diameter. A second body segment is sized for mating with the first body segment. A metal specimen circumscribes the axial protrusion of the first body segment so that an outer diameter surface of the metal specimen defines an outer diameter of the tool. A connection assembly releasably secures the first body segment to the second body segment.