ISO/TC 67/SC 3/WG 1 - Drilling, completion and workover fluids

ISO 13501:2011 specifies a standard procedure for assessing and modifying the performance of solids control equipment systems commonly used in the field in petroleum and natural gas drilling fluids processing. The procedure described in ISO 13501:2011 is not intended for the comparison of similar types of individual pieces of equipment.

ISO 10414-2:2011 provides standard procedures for determining the following characteristics of oil-based drilling fluids: drilling fluid density (mud weight); viscosity and gel strength; filtration; oil, water and solids concentrations; alkalinity, chloride concentration and calcium concentration; electrical stability; lime and calcium concentrations, calcium chloride and sodium chloride concentrations; low-gravity solids and weighting material concentrations. The annexes provide additional test methods or examples that can optionally be used for the determination of: shear strength oil and water concentrations from cuttings; drilling fluid activity; aniline point; lime, salinity and solids concentration; sampling, inspection and rejection; rig-site sampling; cuttings activity; active sulphides; calibration and verification of glassware, thermometers, viscometers, retort kit cups and drilling fluid balances; permeability plugging apparatus with set-screw secured end cap; permeability plugging apparatus with threaded end cap; elastomer compatibility; sand content of oil-based fluid; identification and monitoring of weight-material sag; oil-based drilling fluid test report form.

ISO 13500:2008 covers physical properties and test procedures for materials manufactured for use in oil- and gas-well drilling fluids. The materials covered are barite, haematite, bentonite, nontreated bentonite, OCMA-grade bentonite, attapulgite, sepiolite, technical-grade low-viscosity carboxymethylcellulose (CMC‑LVT), technical-grade high-viscosity carboxymethylcellulose (CMC-HVT), starch, low-viscosity polyanionic cellulose (PAC-LV), high-viscosity polyanionic cellulose (PAC-HV) and drilling-grade Xanthomonas campestris (Xanthan gum). ISO 13500:2008 is intended for the use of manufacturers of named products.

ISO 10416:2008 provides procedures for the laboratory testing of both drilling-fluid materials and drilling-fluid physical, chemical and performance properties. It is applicable to both water-based and oil-based drilling fluids, as well as the base or “make-up” fluid. ISO 10416:2008 is not applicable as a detailed manual on drilling fluid control procedures. Recommendations regarding agitation and testing temperature are presented because the agitation history and temperature have a profound effect on drilling fluid properties.

ISO 10414-1:2008 provides standard procedures for determining the following characteristics of water-based drilling fluids: drilling fluid density (mud weight), viscosity and gel strength, filtration, water, oil and solids contents, sand content, methylene blue capacity, pH, alkalinity and lime content, chloride content and total hardness as calcium. ISO 10414-1:2008 provides additional test methods which may be used for chemical analysis for calcium, magnesium, calcium sulfate, sulfide, carbonate and potassium; determination of shear strength; determination of resistivity; removal of air drill-pipe corrosion; monitoring sampling, inspection and rejection rig-site sampling; calibration and verification of glassware, thermometers, viscometers, retort-kit cup and drilling-fluid balances; permeability-plugging testing at high temperature and high pressure for two types of equipment; and an example of a report form for water-based drilling fluid.

ISO 13503-3:2005 covers the physical properties, potential contaminants and test procedures for heavy brine fluids manufactured for use in oil and gas well drilling, completion and workover fluids. ISO 13503-3:2005 provides methods for assessing the performance and physical characteristics of heavy brines for use in field operations. It includes procedures for evaluating the density or specific gravity, the clarity or amount of particulate matter carried in the brine, the crystallization point or the temperature (both ambient and under pressure) at which the brines make the transition between liquid and solid, the pH, and iron contamination. It also contains a discussion of gas hydrate formation and mitigation, brine viscosity, corrosion testing, buffering capacity and a standardised reporting form. ISO 13503-3:2005 is intended for the use of manufacturers, service companies and end-users of heavy brines.

ISO 13500:2006 covers physical properties and test procedures for materials manufactured for use in oil-and gas-well drilling fluids. The materials covered are barite, haematite, bentonite, nontreated bentonite, OCMA grade bentonite, attapulgite, sepiolite, technical grade low-viscosity carboxymethylcellulose (CMC-LVT), technical grade high-viscosity carboxymethylcellulose (CMC-HVT), and starch. ISO 13500:2006 is intended for the use of manufacturers of named products.

ISO 13501:2005 provides a standard procedure for assessing and modifying performance of solids control equipment systems commonly used in the field in petroleum and natural gas drilling fluids processing. ISO 13501:2005 is not intended for the comparison of similar types of individual pieces of equipment.

ISO 10416:2002 provides procedures for the laboratory testing of both drilling fluid materials and drilling fluid physical, chemical and performance properties. It is applicable to both water-based and oil-based drilling fluids, as well as the base or make-up fluid. It is not intended as a detailed manual on drilling fluid control procedures. Recommendations regarding agitation and testing temperature are presented because the agitation history and temperature have a profound effect on drilling fluid properties.

ISO 10414-2:2002 provides standard procedures for determining the following characteristics of oil-based drilling fluids: drilling fluid density (mud weight); viscosity and gel strength; filtration; oil, water and solids contents; alkalinity, chloride content and calcium content; electrical stability; lime and calcium contents, calcium chloride and sodium chloride contents; low-gravity solids and weighting material contents. Additional test methods are given that may optionally be used for the determination of shear strength, oil and water contents from cuttings, drilling fluid activity, aniline point, cuttings activity, active sulfides. Procedures are also provided that may optionally be used for sampling, inspection and rejection, rig-site sampling, calibration and verification of glassware, thermometers, viscometers, retort kit cups and drilling fluid balances. Examples of calculations are given for lime, salinity and solids content.