• pH Testing of Drilling Fluids

    In chemistry, pH is a measure of the concentration of hydrogen ions in an aqueous solution. pH is measured on a scale from 0 to 14. A pH of less than 7 indicates an acidic solution, while solutions above 7 are considered alkaline. A pH of 7 is neutral, as in the case of pure water. pH analysis is fundamental to drilling fluid control. The pH of the fluid affects clay dispersion and the solubility and effectiveness of chemical additives. A change in pH while drilling often indicates contamination by substances such as cement, gypsum, or carbon dioxide. Effective corrosion control and treatment depends upon the proper pH adjustment. There are two accepted methods of measuring pH: the colorimetric method using paper strips and the electronic method using a pH meter and electrode. Colorimetric Method This method is popular because it is quick, easy, and inexpensive. A strip of paper is p ...

  • A Cost-Effective Reservoir Permeability Tester

    Permeability is a measure of the ability of a fluid to flow through a porous media when subjected to a differential pressure and is mathematically equated by Darcy’s law. The permeability of a petroleum reservoir is one of the most influential parameters in determining the production capabilities of a producing formation. Our Reservoir Permeability Tester was developed to evaluate how fluids affect the permeability of a core specimen. In addition, the unit may be used to evaluate acidizing techniques and to develop typical Acid Response Curves (ARCs). The Reservoir Permeability Tester (part number 127-00) features a Hassler-type core holder that rotates 90° to allow either horizontal or vertical testing. Manual valves enable forward and reverse injection through the core for up to three separate fluids and Nitrogen gas. All wetted components are made of 316 stainless steel, although Has ...

  • Repair, Maintenance, and Calibration

    The oil field is finally busy again! We’re all excited to see business ramping up and people getting back to work. As you load up for that next job, take a look at your mud testing equipment. Is it still in good condition? Does it need repairs, maintenance, or calibration? If so, OFITE can help. We offer full-service repair, maintenance, and calibration on virtually all mud and cement testing equipment. We offer competitive rates and fast turnaround times to get you back up and running in no time. Even if we didn’t manufacture it, we can fix it. We can also bring our services to you. The OFITE service van makes regular trips to West Texas, South Texas, and Louisiana, with other regions available in the future. Schedule the van for a visit to your lab and we bring quality parts and outstanding service. For details about our repair service and to download a repair form, visit our servic ...

  • New Industry Training Program

    OFITE is excited to be hosting a new drilling fluids training program at our facility in Houston, TX. Classes are led by David Breeden, a consultant with over 35 years of experience in all aspects of drilling fluids technology, marketing, R&D, and operations. He will be assisted by Larry Mitchell, who has over 20 years of experience with drilling fluid testing equipment and technology. Drilling is a complex operation requiring the combination of different technologies and disciplines. Today’s drilling personnel must have a working knowledge of drilling fluids to effectively drill a well. This course covers all aspects of drilling fluids technology, emphasizing both theory and practical application. Hands-on laboratory exercises are included. Course Objectives Use clays and polymers to achieve desired mud properties Apply water chemistry to the treatment of drilling fluids Perf ...

  • Alkalinity of Drilling Fluids

    Alkalinity is one of the most important chemical properties of drilling fluids. But what it is? And how does it affect drilling fluid performance? Alkalinity is the acid neutralizing power of a fluid. In drilling fluid testing, alkalinity can be measured on either whole mud (designated with a subscript "df") or on the filtrate (designated with a subscript "f"), as collected with a filter press. The data collected from the alkalinity test can also be used to estimate the concentrations of hydroxyl (OH-), carbonate (CO3-2) and bicarbonate (HCO3-) ions in the drilling fluid. Knowledge of the whole mud and filtrate alkalinities is important in many drilling operations to ensure proper control of the drilling fluid chemistry. Additives, particularly some deflocculants, require an alkaline environment to function properly. Alkalinity arising from hydroxyl ions is generally considered benefic ...

View more blog entries

Customer Login

Log in here to check pricing and place orders or download videos, software, and calibration records.

If you don't have a password to login, fill out the form to request one.



Drilling Mud Drilling Fluids

We offer a complete line of drilling fluids testing equipment, including Viscometers, Retorts, Aging Cells, Roller Ovens, Mud Balances, Filter Presses, and all other instruments included in API Recommended Practice 13B-1 and 13B-2.

Oilwell Cement Cement Testing Equipment

Our product line cement testing equipment includes innovative designs such as the Static Gel Strength Measurement Device (SGSM).  We also offer Ultrasonic Cement Analyzers (UCA), Constant Speed Blenders, Automated HTHP Consistometers, and all other instruments included in API Specification 10.

Oil Reservoir Core Samples Core Analysis

OFITE provides a variety of core analysis equipment. All of the equipment found in this section was especially designed by our engineering department at the request of our customers. We encourage you to come to us with any specific needs that you have.

OFI Testing Equipment, Inc.Your Complete Oilfield Testing Equipment Solution

For over 30 years OFI Testing Equipment (OFITE) has provided instruments and reagents for testing drilling fluids, well cements, completion fluids, and wastewater. In addition to these product lines we also offer a range of instruments for core analysis. From our manufacturing facility in Houston, TX we provide customers all over the world with quality products and exceptional service.

Our drilling fluids testing equipment product line includes innovative designs such as the Model 900 Viscometer, which showcases our ability to develop new technology to meet customer and industry demands. We also offer Retorts, Aging Cells, Roller Ovens, Mud Balances, Filter Presses, and all other instruments required to evaluate drilling fluid properties according to API Recommended Practice 13B-1 and 13B-2.

Our cement testing equipment product line includes innovative designs such as the Static Gel Strength Measurement Device (SGSM), a true OFITE innovation. We also offer Ultrasonic Cement Analyzers (UCA), Constant Speed Blenders, Automated HTHP Consistometers, and all other instruments required to evaluate cement properties according to API Specification 10.

Our extensive line of core analysis equipment includes equipment for preparing core samples, routine testing, and advanced analysis.