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The patented Baker Hughes BJ Sandstone Acid systems improve well productivity by

distributing acid more uniormly throughout the ormation and reducing ormation

deconsolidation compared with conventional hydrochloric/hydrouoric (HCl/HF) mud

acid blends.

With low total acidity and high dissolving power, these systems remove fnes damage and

stimulate ow paths beyond the near-wellbore ormation region. The acid systems control

HF acid spending, providing deeper eective treatment compared to conventional HF acid

and retarded acid treatment solutions.

Technical Data

Saety PrecautionsReer to the material saety data sheet (MSDS) or handling, transport, environmental

inormation, and frst aid.

Reerences MSDS

BJ Sandstone acid systems brochure

Acid stimulation capabilities brochure

Applications

Acid racturing operations in

sandstone ormations

Matrix acidizing in

sandstone ormations

Sand control completions

Geothermal well stimulation

Fines removal and

stabilization treatments

Features and Benefts

Proprietary HCl/HF acid blend

Moderates the reaction o HF

with sandstone

Improves acid penetration to

maximize stimulated area

Limits ormation deconsolidation

rom excessive sandace dissolution

Simpliies corrosion control

Contains an organic acid complex

Minimizes risks o plugging by

controlling precipitation o dissolved

scale and reaction byproducts

Minimizes additive requirements and

risks o incompatibility

Compatible with common mix waters,

energizing gases, acid corrosion

inhibitors, and other common additives

Minimizes risks o ormation damage

Facilitates logistics and testing

requirements and reduces

associated costs

Typical properties

Typical temperature range Up to 500F (260C)

2012 Baker Hughes Incorporated. All rights reserved. 35904

www.bakerhughes.comDisclaimer o Liability: This inormation is provided or general inormation purposes only and is believed to be accurate as o the date hereo; however, Baker Hughes Incorporated and its afliates donot make any warranties or representations o any kind regarding the inormation and disclaim all express and implied warranties or representations to the ullest extent permissible by law, includingthose o merchantability, ftness or a particular purpose or use, title, non-inringement, accuracy, correctness or completeness o the inormation provided herein. All inormation is urnished as isand without any license to distribute. The user agrees to assume all liabilities related to the use o or reliance on such inormation. BAKER HUGHES INCORPORATED AND ITS AFFILIATES SHALL NOT BELIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, PUNITIVE, EXEMPLARY OR CONSEQUENTIAL DAMAGES FROM ANY CAUSE WHATSOEVER INCLUDING BUT NOT LIMITED TO ITS NEGLIGENCE.

O v e r v i e w

BJ Sandstone Acid SystemImprove stimulation in sandstone ormations