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Bond log theory and interpretation - SlideShare

20-10-2015  24 WellConditions That Affect Bond Logs – Light Weight Cement – Pipe is allowed to carry some pipe arrivals even under perfect bonded conditions – 3ft amplitudes may range between 5-10 mV (depending on density) – Formation arrivals, if present, may have a faded appearance – Collars DO NOT chevron but may exhibit a straight line response – Cementing information from the well is critical for interpretation: • Stages, Cement Density, Volumes 1550 kg/m3 cement

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Cement Bond Logging.pptx Casing (Borehole)

Cement Bond Logging (CBL) Kaisagaliyeva Akmaral Dariyev Abay Kazhedenova Maral Proper cement placement between the well casing and the formation is essential: To support the casing (shear bond) To prevent fluid from leaking to the surface For isolating producing zones from water-bearing zones (hydraulic bond) Environment Description

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CEMENT EVALUATION ITS NOT JUST ABOUT A BOND LOG

CEMENT DESIGN IMPACTS ON LOG RESPONSE The closer the cement density is to that of the drilling fluid used, the more difficult it is to distinguish between a solid a liquid The lower the compressive strength of the cement, the more difficult it is to “find” on a log, and requires use of specialty tools and evaluation software

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10- Log Cement Bond Casing (Borehole) Applied

10- Log Cement Bond - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. Cement Bond Log

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Cement Bond Logging Tools - Schlumberger

Cement Bond Logging Tools Cement bond tools measure the bond between the casing and the cement placed in the annulus between the casing and the wellbore. The measure-ment is made by using acoustic sonic and ultrasonic tools. In the case of sonic tools, the measurement is usually displayed on a cement bond log (CBL)

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Cement bond logs - PetroWiki

25-06-2015  Cement-evaluation logs. Conventional cement-bond logs (CBLs) comprise a pulsed transmitter and several receivers of acoustic energy positioned as a vertical array of transducers. The acoustic signal travels through borehole fluid, casing, cement, and the formation itself. The signal is received, processed, and displayed as a microseismogram.

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Cement Bond Log (CBL) Logging Services - HLS Asia

This cement bond log is across a section containing free pipe. The log exhibits a classic MSG signal of very straight lines with a casing collar pattern near the center of the log. The volumetric map shows approximately 97% liquid while the amplitude curve is reading between 60 and 70 mV, revealing that there is virtually no cement present in this interval.

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CEMENT BOND LOG INTERPRETATION - Bridge7

The Cement Bond Log (CBL) gives a continous measurement of the amplitude of sound pulses from a transmitter to receiver. This amplitude is maximum in unsupported pipe and minimum in well-cemented casing. The wave train can be displayed as a Variable Density Log (VDL) ...

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Cement bond log - SlideShare

CEMENT BOND LOG (CBL) 2. A cement bond log (CBL) is a type of log that measures the loss of acoustic energy as it passes through casing. A cement bond log documents an evaluation of the integrity of cement work performed on an oil well. In the process of

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Cement Bond Log Guide For Cementing

Cement bond log (CBL) measures the amplitude or attenuation of waves propagating axially along with a casing. The attenuation of the wave depends upon the materials on both sides of the casing: muds inside the casing and cement in the annular space.

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Cement Bond Log Quick Reference - Voltage Wireline

migration. Radial bond logging allows for the identification of channels not readily identified on basic cement bond logs. Channel Channel may not be identified on 3’ amplitude (average of 3’ section). Mapping of 2’ radials identify channel. Channel may appear as a spiral due to the tool spinning out of the hole. Light Weights Amplitude may not reach 0 mV but

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CEMENT BOND LOG QUICK REFERENCE - Bonnetts

CEMENT BOND LOG QUICK REFERENCE Boreal E‐Line: bonne ©senergy Central Dispatch: 1-888-843-3833 Upper Bow Spring Centralizer Collar Locator Gamma Ray Telemetry Transmi ©er 2 Radial Receivers (8 or 6) 3 Receiver 5 Receiver

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(PDF) The Dark Art of Cement Bond Log Arthur

Academia.edu is a platform for academics to share research papers.

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Cement Bond Log Open Energy Information

10-10-2013  Cement-bond logging usually employs a single receiver to obtain information on the quality of the bond between casing and cement and between cement and borehole wall. Most cement-bond logs are a measurement only of the amplitude of the early arriving casing signal.

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CEMENT BOND LOG INTERPRETATION - Bridge7

The Cement Bond Log (CBL) gives a continous measurement of theamplitude of sound pulses from a transmitter to receiver. This amplitude ismaximum in unsupported pipe and minimum in well-cemented casing. The wave traincan be displayed as a Variable Density Log (VDL) where the positive and negativecycles of the wave train are shaded black and ...

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cement bond log cbl - YouTube

01-02-2019  test quality of cement after casing or job cementing, good or bad cement with wire line operation has registered ,

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Crain's Petrophysical Handbook Cement

Cement bond logs were run as early as 1958 with early sonic logs and the temperature log was used to find cement top beginning in 1933. Cement integrity logs are run to determine the quality of the cement bond to the production casing, and to evaluate cement fill-up between the casing and the reservoir rock.

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Cement Bond Logging - SureFire Wireline

Cement Bond Logging. SureFire WIreline offers cement bond logging services, which documents an evaluation of the integrity of cement work performed on an oil well. In the process of drilling and completing a well, cement is injected through the wellbore and rises up the annulus between the steel casing and the formation. A sonic tool is typically ...

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Introduction to cement bond logs

cement bond logs FEBRUARY FACT SHEET 2017 Cement bond log tools (CBLs) have evolved over the years as technology and telecommunications have advanced. From the 1950s basic single transmitter and dual receiver design with analog communication and zero reprocessing capability, industry has moved to broadband transmitters

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Cement Bond Log Quick Reference - Voltage Wireline

migration. Radial bond logging allows for the identification of channels not readily identified on basic cement bond logs. Channel Channel may not be identified on 3’ amplitude (average of 3’ section). Mapping of 2’ radials identify channel. Channel may appear as a spiral due to the tool spinning out of the hole. Light Weights Amplitude may not reach 0 mV but

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CEMENT BOND LOG QUICK REFERENCE - Bonnetts

CBL: Cement Bond Log (GR‐CCL, 3’ 5’ Receivers) RBL: Radial Bond Log (CBL + 2’ Radial Receivers) Factors Influencing Amplitude Measurements 1. Tool not centralized Reduces amplitude, cement appears be ©er than in actuality 2. Insufficient cemen ng curing me

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Cement Bond Log Open Energy Information

10-10-2013  Cement-bond logging usually employs a single receiver to obtain information on the quality of the bond between casing and cement and between cement and borehole wall. Most cement-bond logs are a measurement only of the amplitude of the early arriving casing signal.

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What is Cement Bond Log (CBL)? - Production

A cement bond log (CBL) documents an evaluation of the integrity of cement job performed on an oil well. It is basically a sonic tool which is run on wireline. Similar to a ringing bell, when no cement is bonded to the casing, pipe is free to vibrate (loud sound).

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CEMENT BOND LOG INTERPRETATION - Bridge7

The Cement Bond Log (CBL) gives a continous measurement of theamplitude of sound pulses from a transmitter to receiver. This amplitude ismaximum in unsupported pipe and minimum in well-cemented casing. The wave traincan be displayed as a Variable Density Log (VDL) where the positive and negativecycles of the wave train are shaded black and ...

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Cement Evaluation - Cement Bond Log

CBL / VDL. CET. Shown as poor cement. Channels are easily seen since whole circumference is scanned. Decrease in formation signal and increase in casing signal. The CET only determines the cement / casing bond, therefore, channels will be identified only

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Cement Bond Logging - SureFire Wireline

Cement Bond Logging. SureFire WIreline offers cement bond logging services, which documents an evaluation of the integrity of cement work performed on an oil well. In the process of drilling and completing a well, cement is injected through the wellbore and rises up the annulus between the steel casing and the formation. A sonic tool is typically ...

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2021 Cementing Course Thoroughbond

Real o Cement o Interpretation . Online Cementing Classes Bond Log Courses Live Webinars In-House Training Bond Log Interpretations . Home. Webinar Schedule. 2021 Cementing Course. Register Online. Contact Us. Course Descriptions. Cementing Course Instructor. Cementing Class Testimonials ...

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Webinar Schedule Thoroughbond

Real o Cement o Interpretation Online Cementing Classes Bond Log Courses Live Webinars In-House Training Bond Log Interpretations

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CBL Overview Amplitude Casing (Borehole)

Cement Evaluation. Tool - Cement bond log _ ( CBL ) Presented by :- mohamed taher eleidoudi omar ali omar enser reda. Topics: Quick basics of purposes of cement scenarios bond logs run in How traditional acoustic bond logs work and what is measured and presented Amplitude Travel Time Examples of good cement bond and free pipe and what things to look for Channeling why run a radial ...

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Cement Bond Log Quick Reference - Voltage Wireline

Cement Bond Log Quick Reference Brooks - 403.501.8474 Red Deer - 888.309.3055 Whitecourt - 780.778.4505 Grande Prairie - 780.538.1108 Cased Hole Logging TCP and Conventional Perforating Swabbing Specialty Services Fast Formation Fast Formation - to get formation arrivals there must be good bond from cement to pipe and cement to formation.

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CEMENT BOND LOG QUICK REFERENCE - Bonnetts

CEMENT BOND LOG QUICK REFERENCE Boreal E‐Line: bonne ©senergy Central Dispatch: 1-888-843-3833 Upper Bow Spring Centralizer Collar Locator Gamma Ray Telemetry Transmi ©er 2 Radial Receivers (8 or 6) 3 Receiver 5 Receiver

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CEMENT BOND LOG INTERPRETATION - Bridge7

The Cement Bond Log (CBL) gives a continous measurement of the amplitude of sound pulses from a transmitter to receiver. This amplitude is maximum in unsupported pipe and minimum in well-cemented casing. The wave train can be displayed as a Variable Density Log (VDL) ...

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Well Integrity Evaluation with Wireline Logs

Cement Bond Log/Variable Density Log (CBL/VDL) Evaluation of tubular-solids-formation bonding Benefits Works in wide range of wellbore fluids densities Less affected by dry micro-annulus (than Ultrasonics) Limitations Affected by wet micro-annulus, settled solids Sensitivity to eccentering

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Cement Bond Logs - Drilling Engineering - Rig

16-12-2020  Unfortunately, the cement bond log is perhaps the most misunderstood log used in drilling operations. Logs and logging tools offered by the service companies may be different, and the interpretation may depend heavily on a knowledge of the particular tool's characteristics. Experts quite often disagree on CBL evaluations.

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Variable Density/Cement Bond Log Results -

Using a cement bond log, a variable density log and ultrasonic tools provide an indispensable, (but different), set of evaluative data. The objective of cement evaluation logs is to provide information to understand if we have achieved zonal isolation. If not, they can help to asses if a cement squeeze is possible to restore it.

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A Look at Cement Bond Logs Journal of

Despite its potential, the cement bond log is probably one of the most abused, misused, and misunderstood logs used in the oil field today. Miscalibration, inadequate information, and a severe lack of standardization are enough to push petroleum engineers into a morass of bewilderment.

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2021 Cementing Course Thoroughbond

Real o Cement o Interpretation . Online Cementing Classes Bond Log Courses Live Webinars In-House Training Bond Log Interpretations . Home. Webinar Schedule. 2021 Cementing Course. Register Online. Contact Us. Course Descriptions. Cementing Course Instructor. Cementing Class Testimonials ...

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RADii® Segmented Bond Log Tool Probe

The RADii® Segmented Cement Bond Tool uses a single ceramic transmitter, an eight or sixteen segment receiver at 3 ft. and a single receiver at 5 ft. spacing. The segmented receiver generates a cement map which enables identification of cement channelling, while the single receiver generates the traditional cement bond log (CBL) and a variable-density log (VDL).

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