Clean-up of Formate Mud Damage in Gas Wells: Lab Studies and a Case History

Long horizontal and multi-lateral oil and gas wells provide an<br>attractive option for maximizing reservoir contact. Formatebased<br>brines have been used in drilling and completion<br>operations for more than 10 years. Advantages of these fluids<br>include high density, solids-free brines, better compatibility<br>with XC-polymer, starches, and less potential for formation<br>damage. These advantages were reported in several previous<br>publications.