shaletech presentations

7/30/2019 ShaleTech Presentations

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Cement Quality Assurance in FactoryCement Quality Assurance in Factory--StyleStyleWells in the Haynesville ShaleWells in the Haynesville Shale

Authors:

Eric Perner Petrohawk Ener

Corporation; Anthony Febbraro, Eric Evans,Jeff Watters, CSI Technologies LLC

Speaker: Eric Evans, CSI Technologies


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Agenda

Project Team

Haynesville Region/Wells Overview

Problems/Issues

QA/QC Program Solutions

Conclusion


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Project Team

Petrohawk Energy Corp.

Founded In 2003

Over 200 Wells Drilled In Haynesville To Date

Recentl Mer ed With BHP

CSI Technologies LLC

Founded In 1990

Independent Laboratory/Consulting Company

Focus on Field Operations And R&D


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Problems/Issues

Slurry Stability

Gas Migration

Placement And ECDs

Measured TOC Variation


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QA/QC Program

Analysis

Bulk Plant Loading

Laboratory Testing

Outcome

Operation Standardization

Helped Identify Ongoing Issues Solutions were proposed


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Slurry Stability

Issues

HPHT Zones Horizontal Sections

Hole Eccentricity

Risk Of Major Operational Failure Completion (Fracturing Treatments)

Solutions

New Laboratory Tests Modified Schedule

Cement Blend Standardization


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Settling


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Settling


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Settling


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Settling


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Settling


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Gas Migration Issues

Overburden Pressure Hydrostatic

Dynamic

Hole/Pipe Geometry

Displacement Efficiency

Solutions

Accurate Temperature Estimations

Slurry Design Modification


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Temperature Simulation


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Compressive Strength Development50 psi 500 psi 12 hr 24 hr 36 hr 48 hr

310F 6:31 7:58 2208 3793 - -

275F 7:00 8:20 1564 2604 - -

250F 21:36 24:30 0 0 1825 2050

225F 25:15 35:04 0 0 560 1200

50 psi 500 psi 12 hr 24 hr 36 hr 48 hr

310F 9:36 11:48 570 3370 3630 3700

275F 10:50 16:04 110 1330 2570 3230

250F 39:25 45:43 0 0 0 660

225F 48:10 57:23 0 0 0 30


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Placement And ECDs

Issues

High Pump Pressures

Lost Circulation

o u ons Crossover Location

Rheology

Improved Conditioning Techniques


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Losses Due to ECDs

Losses During

Displacement


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Crossover Location

5000

6000

7000

8000

ure(psi)

Surface Pressure vs. Casing Crossover Location

0

1000

2000

3000

4000

0 20 40 60 80 100 120 140 160 180 200

SurfacePress

Time (min)

XO as Run

XO at 9,500 ft


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Losses Due to ECDs

Losses During

Displacement

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21

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23

W)

ECD's at Shoe vs Cement Rheology

Baseline:

Pv=200, Yp=15;

Pv2=150, Yp2=14

Half Rheology:Pv=100, Yp=8;

Pv2=75, Yp2=7Double Rheology:

Pv=400, Yp=30;

Pv2=300, Yp2=28

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18

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0 20 40 60 80 100 120 140 160 180 200

ECD's(ppgE

Time (min)


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Rheology

Plastic Viscosity (cP) Yeild Point (lbf/100ft^2)

Before

After QC

Program Before

After QC

Program

80F 358 318 72 58

190F 324 227 55 33

190F CUP 351 138 62 19


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Measured TOC Variation Issues

Displacement Efficiency Cement Contamination

Improper Mud Removal/Cleaning

Drilling Stricter Back-Reaming

Pipe Rotation

Cementing Cement/Spacer Design Standardization

Pump Rate Control


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Standardization of Cementing

OperationsIntermediate Production

System Lead Tail Cement

Density (lb/gal) 12.6 - 13 14.6 - 15 17

Initial Bc


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Conclusion Implemented QA/QC Program

Bulk Plant Observation

Laboratory Testing/Confirmation

On-Site Observation

Testing Procedures New ett ng Tests

Compressive Strength Development

Standardized Cement Slurries Base Compositions

Performance Requirements

Reduction In Failure Costs No Cementing Related Major Operational Failures To Date


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Questions/Comments

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