Well Completion and Operation P2 V0.pdf


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OGIM

Well Completion and Operations

Stimulation
•Acidizing
Acids that are commonly used for
stimulation are:
1. Hydrochloric acid (HCl)
2. Hydrofluoric acid (HF)
3. Acetic Acid
4. Formic Acid

MMA

OGIM

WCO -P2_2010 -V0

10

Well Completion and Operations

Stimulation
•Acidizing
1. hydrochloric acid (HCl) is the most
widely used due to its:
• high carbonate dissolving ability
• low cost.
- It dissolves limestone, dolomite and
other carbonates.
- It reacts with limestone to form water,
carbon dioxide and calcium chloride.
2HCI + CaCO3 → CaCl2 + H2O + CO2
MMA

OGIM

WCO -P2_2010 -V0

11

Well Completion and Operations

Stimulation
•Acidizing
1. hydrochloric acid.
- Its reaction with dolomite forms water,
carbon dioxide, magnesium chloride and
calcium chloride.
4HCI + CaMg(CO3)2 → CaCl2 + MgCl2 + 2H2O
+ 2CO2

MMA

WCO -P2_2010 -V0

12

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