Product Information Summary

Drilling, Workover & Completion Fluids

FOR ADDITIONAL INFORMATION

REFER TO MESSINA'S LARGE TECHNICAL CATALOGUE,

INDIVIDUAL PRODUCT DATA OR TECHNICAL BULLETINS

 

INTRODUCTION These earth mineral products are used to increase the density of drilling fluids in order to control sub-surface pressures. It is important that weighting materials have little or no effect on the rheological properties of the mud system. Barite (MESUCO-BAR) is the most widely used weight material due to its combination of high density, availability, low abrasivity, and economy. Specular hematite (MARITE) is becoming increasingly popular because its higher specific gravity allows the preparation of high-density muds with relatively lower solids content, which facilitates mud control and improves drill rates. Calcium carbonate (SOLUBLE-WATE), due to its solubility in acid, is used in applications where formation damage is of concern. Depending upon the composition of the water phase, SOLUBLE-WATE can be used to prepare muds with maximum densities of 11.5 to 12.5 lb/gal (1380 to 1500 g/L). Galena (HI-WATE) is seldom required because practice has shown that virtually any well can be killed with muds weighted with barite or hematite when correct techniques are applied. For solids-free weighting materials please refer to KLEEN-WATE in the Non-Damagaing Workover/Completion section of this product summary.

 

HI-WATE Extreme density weight material (galena), specific gravity 7.0- 7.5, for specialized well-killing operations.        Product Data Sheet

 

MARITE High-density weight material (specular hematite), specific gravity 5.0-5.2. Marite is acid soluble to a certain degree (note: iron sequestering agents are recommended during acidization of the well (see Messina's Oilaid catalogue on stimulation chemicals). Marite is less abrasive on tubulars than other hematite weighting agents.    Product Data Sheet

 

MESUCO-BAR API grade barite, barium sulphate, specific gravity 4.20 minimum.                                                                                                                                                                                                                             Product Data Sheet

 

SOLUBLE-WATE Acid-soluble calcium carbonate weight material.

 

SOLUBLE-WATE Coarse ground barite for pipe slugs to control pressure surges.

Drilling, Workover & Completion Fluids

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