PowerFlex PowerEchoAnnular barrier evaluation services

01

Powering Well IntegrityReliable barrier evaluation for assuring well integrity

02

Assuring the integrity of the well—from well construction to abandonment—is critical to preventing damage to people, the environment, and assets. Catastrophic incidents attributed to the failure of well integrity are the global driver for improving in the installation and evaluation of barriers.

Barrier evaluation must be robust, reliable, and timely in all possible conditions. Only then can it fulfill its critical role in decisions that mitigate risks in current well operations—and help improve barrier installation and performance in the next well.

PowerFlex* annular barrier evaluation service delivers the most comprehensive and reliable evaluation of pipe and cement sheath behavior in the industry.

PowerEcho* annular barrier evaluation service is a targeted approach for wells with less‑complex completions.

Powering Performance

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PowerFlex service—a powerful combinationBy simultaneously acquiring ultrasonic pulse-echo measurements and flexural wave imaging, PowerFlex service provides a high-resolution map of pipe thickness and cement with full azimuthal coverage. The measurement of third-interface echoes (TIEs) by PowerFlex service uniquely images the outer wall for pipe standoff. This innovative combination of measurements enables precise, reliable evaluation of all cement types and weights, particularly for identifying and qualifying debonded cement, and excels at barite sag evaluation.

PowerEcho service—a single straightforward measurementFor more conventionally constructed wells—but also performing in all cement types and weights— PowerEcho service delivers a high-resolution map of pipe thickness and cement from its powerful pulse-echo measurement.

Casing sizes

4½ to 22 in

Any cement Ultralight to heavyweight

slurries

All mud weights

Up to 19 ppg

Casing wall thickness

0.18 to 1 in

With new transducer technology and innovative processing software and firmware, PowerFlex and PowerEcho services deliver high‑resolution information where conventional technology cannot perform.

20×more powerful

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Use PowerFlex annular barrier evaluation service when you need the industry’s best wellsite answers, available within 2 hours of pulling out of hole.

Powering Drilling DecisionsEvaluate and take action

■ Reduce evaluation uncertainty ■ Increase confidence in decisions ■ Cut logging time up to 50% ■ Simultaneously conduct casing inspection

and cement evaluation ■ Monitor drill wear and evaluate burst pressure ■ Eliminate fluid swapping before logging

Superior acquisition efficiency reduced logging time by 12 hours.

PowerFlex service simultaneously evaluated cement and drill wear for four liner sizes in a single decent at doubled logging speeds that saved 12 hours on a deepwater drillship.

O�shore Operation

Time, h

Superior data reduced logging time by 12 hours.

Legacy

EchoFlex

12 hours savedPowerFlex service

Conventional tool

12 hours saved

05

6,500

135⁄8

117⁄8

75⁄8

97⁄8

7,500

8,500

9,500

10,500

11,500

12,500

13,500

14,500

15,500

16,500

17,500

18,500

19,500

Well SchematicCasingZones

Depth, ft Gamma Ray

0 gAPI 6

Discriminated Borehole-Compensated

Attenuation

10 dB/ft 0

Internal Radius Maximum, 1-ft Median

6 in 6.5

Internal Radii Corrected for Eccentering Minus Internal

Radius Average (IRBK)

–0.16 in 0.39

Cement Acoustic Impedance

–0.3.9 in 30

Image Orientation, °

0 90 180 270 360

U R D L U Image Orientation, °

0 90 180 270 360

U R D L U

Internal Radius Average, 1-ft Median

6 in 6.5

Cement Acoustic Impedance Average,

3-ft Median

0 Mrayl 10

Internal Radius Minimum, 1-ft Median

6 in 6.5

Thickness Maximum Value, 1-ft Median

0.3 in 0.8

Casing Thickness Minus Thickness Average Value

(THBK)

–0.63 in 0.15

Flexural Attenuation

0 dB/m 1.5e+34

Thickness Average Value, 1-ft Median

0.3 in 0.8

Flexural Attenuation

10 dB/m 110

Thickness Minimum Value, 1-ft Median

0.3 in 0.8Variable Density*

Log (VDL)VDL Radii

200 1,200

IRBK

–1,000 0.08 THBK

–1,000 0.08

0 100

0 8

Run PowerFlex or PowerEcho service to conduct a comprehensive analysis for cementing diagnosis and improvement.

Powering Cementing DecisionsConfirm and improve

■ Reliable visualization of the cement to confirm ● azimuthal placement of cement ● adequate pipe centralization ● absence of channels

■ Information to improve the next well’s ● cement placement ● cement quality ● pipe centralization

PowerFlex service delivers high-quality cement maps—even in difficult environments of heavy mud, thick and large casings, and light cement—and valuable information on pipe standoff and its effect on cement placement.

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3,750

3,760

3,770

3,780

3,790

3,800

3,810

3,820

3,830

3,840

3,850

Depth, m

Gamma Rayand CasingCollar Log

Acoustic Impedance

and Map

Acoustic Amplitudeand Map

EqualizedFlexural

Attenuation

TIE Annular

Thickness

TIE Velocity

Solid-Liquid-Gas Map

TIE Variable Density* Log (VDL), 0–180°

TIE VDL, 90°–270° CasingCentralization

Ultrasonic Casing

Collar Log

–25 in 5

AverageWave

Amplitude

0 db 70

Average Cement

Acoustic Impedance

0 Mrayl 8

MaximumWave

Amplitude

–6 db 0.5

–6 0.5 0 8 34.36 125.58 0 2.00

0 64

Gamma Ray

0 gAPI 75

AverageFlexural

Attenuation

40 db/m 90

AverageTIE AnnularThickness

0 in 3

Ultrasonic Casing Caliper

0 % 100

TIE Velocity

1,200 m/s 2,200

Solid-Liquid-Gas TIE Relative Bearing VDL TIE Relative-Bearing VDL

Cement Acoustic

Impedance

0 Mrayl 8

TIE AnnularThickness

0 in 2

FlexuralAttenuation

Casi

ng c

entr

aliz

ers

No

cent

raliz

ers

Cent

raliz

ers

U R D L U0 90 180 270 360

Image Orientation, º

Pulse Echo Relative Bearing–1 us 68

Liquid channel

Casing centralization percentage

Low side of borehole

TIE cement velocity close to expected value and slowness from ultrasonic cement analyzer

9 / -in casing 85

Powering Interpretation Decisions

Where conventional processing is limited by incomplete knowledge of mud properties, PowerFlex and PowerEcho services’ novel inversion-based processing eliminates the need for mud information to deliver reliable mud and cement answers.

Comprehensively evaluate both the cement sheath and pipe condition with novel processing, visualization, and interpretation workflows in the Techlog* wellbore software platform. Detailed and reliable diagnosis of cement and pipe behavior informs decisions across the life of the well, from drilling through abandonment.

Diagnose and understand ■ Integrated cement evaluation with

Invizion* well integrity services ■ Pipe standoff and casing contact points ■ Microannulus diagnosis ■ Leak path analysis ■ Pipe inspection for burst and collapse conditions ■ Barite sag evaluation ■ Trapped gas in the annulus

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8

6

4

2

0

Mra

yl8

6

4

2

0

Mra

yl

2.5

2

1.5

1

0.5

0

Mra

yl

Conventional technology PowerFlex and PowerEcho services

Cement Acoustic impedance

Cement Acoustic impedance

Mud Acoustic impedance

Clearly understand annulus hazards and behavior prior to abandonment, especially in older wells where critical information is unavailable. Without this informed basis, pipe retrieval and barrier removal or placement can default to time‑consuming and costly trial and error.

Powering Abandonment DecisionsIlluminate and optimize

■ Evaluation to optimize casing retrieval ● intervals of barite sag ● pipe standoff behavior for precisely placed

cut decisions and contact points ■ Understanding of the annular condition to improve

the operational safety of barrier retrieval or placement ● identify trapped gas ● evaluate casing cement ● diagnose formation creep ● evaluate pipe condition prior to retrieval ● confirm presence or absence of channels

■ Abandonment process improvement ● cement placement quality ● interval selection for barrier placement

PowerFlex service’s 3D TIE output provides a clear image for P&A casing cutting operations of the perfectly centralized inner (gray) and outer (red) casings.

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Measurement Specifications

Output Acoustic impedance, cement bond to casing, flexural attenuation, Variable Density* log (VDL) of annulus waveform, solid‑liquid‑gas map of annulus material, hydraulic communication map, casing rugosity image, internal radius image, casing thickness image

Logging speed,† ft/h [m/h] 400 to 4,500 [122 to 1,372]

Depth of investigation, in [cm] Casing and annulus: 3 [7.62]

Horizontal resolution, ° 5 or 10

Vertical resolution, in [cm] 0.6 to 6.0 [1.52 to 15.24]

Casing thickness

Range, in [cm] 0.18 to 1.0 [0.45 to 2.54]

Accuracy, % ±2

Resolution, in [cm] 0.002 [0.005]

Acoustic impedance

Range, Mrayl 0 to 10

Accuracy, Mrayl <3.3 Mrayl: ±0.5, >3.3 Mrayl: ±15%

Resolution, Mrayl ±0.2

Flexural attenuation

Range, dB/m 0 to 200

Accuracy, dB/m 5

Resolution, dB/m 1

Mud type or weight limitations‡ All types including weights up to 19 ppg

Combinability Bottom only, combinable with most wireline tools† Some combinations may reduce logging speed, which is also resolution dependent.‡ Consult planning software to model the logging scenario.

Mechanical Specifications

Temperature, degF [degC] 350 [177]

Pressure,† psi [MPa] 20,000 [138]

Casing size—min., in [cm] 4½ Min. ID: 4 [10.16]

Casing size—max., in 16‡

Outside diameter,§ in [cm] 33/8 [8.57]

Length,§ ft [m] 14.58 [4.44]

Weight,§ lbm [kg] 299 [135.6]† High‑pressure versions available.‡ Successfully logged in 185/8‑in casing in certain nonattenuative mud conditions.§ Without rotating sub.

PowerFlex

PowerFlex service with sub option.

Measurement Specifications

Output Acoustic impedance, cement bond to casing, rugosity image, internal radius, casing thickness

Logging speed,† ft/h [m/h] 600 to 13,000 [183 to 3,962]

Depth of investigation Casing‑to‑cement interface

Horizontal resolution, ° 5 or 10

Vertical resolution, in [cm] 0.6 to 6.0 [1.52 to 15.24]

Casing thickness

Range, in [cm] 0.18 to 1.0 [0.45 to 2.54]

Accuracy, % ±2

Resolution, in [cm] 0.002 [0.005]

Acoustic impedance

Range, Mrayl 0 to 10

Accuracy, Mrayl <3.3 Mrayl: ±0.5, >3.3 Mrayl: ±15%

Resolution, Mrayl ±0.2

Flexural attenuation

Range, dB/m Not available

Accuracy, dB/m Not available

Resolution, dB/m Not available

Mud type or weight limitations‡ All types including weights up to 19 ppg

Combinability Bottom only, combinable with most wireline tools† Some combinations may reduce logging speed, which is also resolution dependent.‡ Consult planning software to model the logging scenario.

Mechanical Specifications

Temperature, degF [degC] 350 [177]

Pressure,† psi [MPa] 20,000 [138]

Casing size—min., in [cm] 4½ Min. ID: 4 [10.16]

Casing size—max., in 22

Outside diameter,‡ in [cm] 33/8 [8.57]

Length,‡ ft [m] 14.58 [4.44]

Weight,‡ lbm [kg] 299 [135.6]† High‑pressure versions available.‡ Without rotating sub.

PowerEcho

PowerEcho service with sub option.

*Mark of Schlumberger. Copyright © 2021 Schlumberger. All rights reserved. 21-RPIN-1064537

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PowerFlex | PowerEcho