Dynamic Time-Gate Cement Evaluation Tool

Patent metadata

Field	Value
Publication number	US-2020088024-A1
Application number	US-201916689216-A
Country	US
Kind code	A1
Filing date	Nov 20, 2019
Priority date	Mar 22, 2018
Publication date	Mar 19, 2020
Grant date	—

Abstract

A method and system for determining cement bonding, or other materials attached to a pipe string. A well measurement system for determining cement bonding or other materials attached to a pipe string may comprise an acoustic logging tool, wherein the acoustic logging tool comprises at least one receiver and at least one transmitter. The well measurement system may further comprise an information handling system, wherein the information handling system is configured to broadcast a signal with the transmitter, record the reflected signal with a receiver; and determine an integrity of a cement using a Quintero Wellbore Index.

First claim

What is claimed is:

1 . A well measurement system for determining cement bonding comprising:
an acoustic logging tool, wherein the acoustic logging tool comprises:
at least one transmitter, wherein the at least one transmitter is configured to broadcast a pressure pulse; and
at least one receiver; wherein the at least one receiver is configured to record the reflected pressure pulse; and
an information handling system, wherein the information handling system is configured to determine an integrity of a material using a Quintero Wellbore Index based at least in part on the reflected pressure pulse, wherein the Quintero Wellbore Index is a series of indices including one or more arrival times of one or more rays through a zone of interest.

2 . The well measurement system of claim 1 , wherein the acoustic logging tool comprises a housing and the housing has a specific acoustic velocity.

3 . The well measurement system of claim 2 , wherein the housing comprises holes or grooves.

4 . The well measurement system of claim 1 , wherein a travel time for a first ray is determined by the Quintero Wellbore Index using

tA
o

=

r
1
1

+

y
1
2

2

+

(

S
-

2


y
1

)

V

m



1

,

wherein tA 0 is the travel time, r 1 is a first radius, y is the first ray location on an x and y plane, S is a distance between the transmitter and the receiver, and V ml is an acoustic compressional velocity.

5 . The well measurement system of claim 1 , wherein a time of arrival of a first ray is determined by the Quintero Wellbore Index using

tC
1

=

2

r



1

V

m



1

+

2

wcsg



1

V

csg



1

+

2

r



2

V

m



2

+

r
3
2

+

y
3
2

2

V

m



3

+

(

S
-

2


y
3

)

V

csg



2

,

wherein tC 1 is the time of arrival, r 1 is a first radius, y is the first ray location on an x and y plane, S is a distance between the transmitter and the receiver, V m1 is an acoustic compressional velocity of a first material, V m2 is an acoustic compressional velocity of a second material, and V m3 is an acoustic compressional velocity of a third material.

6 . The well measurement system of claim 1 , wherein the transmitter and the receiver are transducers, and the transmitter has a radius defined as r t and the receiver has a radius defined as r R .

7 . The well measurement system of claim 1 , wherein the at least one receiver is operable to record a sample every one microsecond.

8 . The well measurement system of claim 7 , wherein the sample records the reflected pressure pulse.

9 . The well measurement system of claim 1 , wherein the at least one transmitt

Assignees

• Halliburton Energy Services Inc

Inventors

• Quintero Luis F
• Anguloyznaga Reinaldo Jose
• Najm Ehab Abdel Rahman Ali Najm Abdel Rahman

Classifications

• G01V1/48

  Processing data · CPC title

• G01V1/50

  Analysing data · CPC title

• E21B47/0005 Primary

  Fixed Constructions · mapped topic

• E21B47/005 Primary

  Monitoring or checking of cementation quality or level · CPC title