• Cement Gel Strength

    Gel strength is a property of cement slurries that describes the attractive forces that exist between particles suspended within the mixture. Gel strength develops as the slurry remains under static conditions. Of the four rheological models that describe the flow behavior of fluids, the one that is used to best describe cement slurries is the Bingham-Plastic model. One of the particular characteristics of a Bingham-Plastic fluid is that it has a yield point. Below a fluid’s yield point, the fluid behaves as a solid. As force is applied to the slurry, it does not move. Once the force exceeds the fluid’s yield point, the fluid begins to flow. As long as the slurry remains in a static state, it has a chance to develop gel strength. Cement service companies have a strong interest in cement gel strength. Gel strength describes the ability of a fluid to clean the walls of the hole and carry ...

  • Come see us at ADIPEC

    OFI Testing Equipment, Inc. will be exhibiting at the Abu Dhabi International Petroleum Exhibition and Conference November 13 – 16 at stand 7432 hall 7. Stop by and see our Model 2040 Automated HTHP Consistometer, which tests the thickening time of oilwell cement at up to 40,000 psi and 500°F. We will also be showing our single cell Ultrasonic Cement Analyzer and Static Gel Strength Measurement Device (which measure the compressive strength and gel strength of cement over time). We will also be discussing our partnership with Salunda Limited to distribute the new MudChecker, a solid state probe that measures the oil, water, and solids content as well as salinity of oil based drilling fluids in just a few minutes. A Salunda representative will be on hand to answer questions and provide hands-on demonstrations. We are excited about the opportunity to bring this new technology to the drill ...

  • Volumetric Cement Expansion

    When wet cement begins to set, the crystals that form the set cement matrix take up less volume than the initial reactants that make up the base cement blend mixture. As a result of the chemical reaction, the cement undergoes a net reduction in volume. This phenomenon is called bulk shrinkage. When the cement is in contact with water during the setting process, cement hydration consumes the water as a part of the chemical reaction. The influx of water, chemical shrinkage, into the cement matrix offsets the bulk shrinkage. The result is hardened cement that experiences significantly less volumetric shrinkage. For cement that is placed in an oil well, the phenomenon of shrinkage is problematic. Volumetric shrinkage causes the cement to pull away from both the formation and the steel casing. The result is a loss of zonal isolation, which is one of the most basic functions of oil well cemen ...

  • New Partnership with Salunda

    PRESS RELEASE A new partnership will see US-based OFI Testing Equipment, Inc. handle global distribution for monitoring specialists Salunda Limited’s hand-held drilling fluid measurement instrument, MudChecker. The move comes as Salunda is seeing increasing demand for MudChecker - the first handheld instrument of its type - from oil and gas sector contractors, and is part of a wider sales drive and global push for its range of analysers and sensors. Salunda will be linking-up with OFITE to tap into the Houston-based firm’s international reach and network of distributors, promoting MudChecker and its rapid testing and analysis capabilities to a global base. MudChecker is a compact, rugged and solid-state tester that can be either used in the laboratory or quickly deployed on a drill site or offshore platform to provide accurate and consistent data about the mud properties that are cri ...

  • Atmospheric Conditioning of Cement

    Once dry cement is mixed with water, a complex chemical reaction begins. The chemical reactions have a tremendous effect on the physical performance properties of the cement slurry. The addition of other chemicals to the cement mixture further complicates the reaction process as these additives affect the slurry properties. Blends are modified in order to increase or decrease the thickening time, alter the rheologies, or change the fluid loss properties. Laboratories need the capacity to gauge the performance of the cement slurry in order to accurately predict how that slurry will perform under conditions that are found in an oil well. One of the tools that technicians have at their disposal to prepare slurries for additional testing is the atmospheric consistometer. Originally conceived as an instrument to test the thickening time of cement slurries, the atmospheric consistometer is of ...

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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.