Services – Drilling Fluids

Oilfield Testing & Consulting offers a variety of industry standard tests for evaluating the properties of Drilling and Completion Fluids. API Recommended Practice procedures are followed unless otherwise requested.

Viscosity

This type of test measures a fluid’s resistance to flow, typically using a Marsh funnel, a direct-indicating Rheometer, a low shear Viscometer, or a HTHP Viscometer.

 

Fluid Loss Test

This test evaluates a fluid’s loss of the liquid phase through a filter disc, simulating formation fluid loss. Variations of this test include API Fluid Loss, HTHP Static Fluid Loss, and HTHP Dynamic Fluid Loss.

 

Permeability Plugging Test – Aloxite Disc, Slotted SS Disc

This test is essentially an inverted HTHP FL cell, and it evaluates Lost Circulation Material additives and their ability to prevent fluid loss through a permeable aloxite disc or slotted stainless steel disc.

 

Lubricity & EP

This test determines a drilling fluid or lubricant’s ability to reduce drag between two hardened steel surfaces – a block, and a ring rotating at 60 RPM.

 

Solids Analysis

This category of testing is useful to gather information about the solid and liquid components of a drilling fluid. Tests include Retort Analysis (% Solids, Oil, Water), Full Solids Analysis Low Gravity Solids, Total Salinity, Soluble NaCl, etc.), Sand Content, Total Suspended Solids, and other tests.

 

Particle Size Analysis

This test measures the net volume of solid particles in each of the various size ranges, given as a percentage of the total solids of all sizes in the sample.

 

Electrical Stability

This test is used to measure the emulsion and oil-wetting qualities of oil based drilling fluids.

 

Chemistry Analysis

API Recommended Practice 13B-1 & 13B-2 contain procedures used to test some major chemical components of water-based and oil-based drilling fluids. A few examples are concentration levels of Alkalinity, Calcium, Chlorides, and Hydrogen Sulfide.

 

Aniline Point

This test evaluates base oils from oil-based drilling fluids, and it indicates whether or not the oil is likely to damage rubber compounds that come into contact with the fluid. The actual “aniline point” is the lowest temperature at which equal volumes of aniline and the oil become miscible.

 

API Specification 13A QC Testing

API Specification 13A: Specification of Drilling Fluids Materials is followed to evaluate common drilling fluid components such as barite, bentonite, CMC, PAC, starch, xanthan gum, and others.