• Testing the Lubricating Properties of Drilling Fluids

    The lubricating properties of drilling fluids are an important factor in well design. Deviated holes are particularly susceptible to excess drag between the drill string and casing. Serious casing wear can also occur in deep and ultra-deep wells and is further complicated by tripping in and out of the hole. The challenge for mud engineers is to design a drilling fluid system that adequately lubricates the drill string without compromising other physical properties such as density, rheology, and filtration. To test the drilling fluid, engineers use a specially designed Lubricity Tester. This instrument simulates the rotation of the drill string and the pressure of the drill pipe against the casing. A stationary block is pressed against a rotating ring while both are submerged in the test fluid. The control board measures the torque necessary to turn the ring at a constant speed and conve ...

  • Preparing Cement with a Constant Speed Mixer

    Cement slurries used in the oil field are dynamic fluids with complex chemistries. Laboratories tasked with the development of slurries used for cement pumping operations strive to prepare these mixtures under conditions that reflect those found out in the field. With the replication of conditions that are as close as possible to those found out at the wellsite, technicians are able to make accurate predictions the behavior of cement slurries under those same conditions. The most basic way to ensure that lab-prepared slurries match the performance of field-prepared counterparts begins with a properly mixed slurry. Cement laboratories use a constant speed mixer to ensure that mixed cement slurries are a homogeneous blend. The proper amount of mixing energy ensures that individual cement grains are completely surrounded by water which kicks off the cement hydration process. Laboratory tec ...

  • Measuring Shale Swelling

    Shale swelling is a major cause of wellbore instability. It can lead to a variety of problems, such as hole sloughing, pipe drag, bit balling, stuck pipe, or other “gumbo” related issues. Shale swelling is caused by clay (one of the major components of shale) absorbing water, usually from drilling fluid. The proper drilling fluid additives can mitigate shale swelling and prevent the loss of the entire drilling operation. The OFITE Dynamic Linear Swellmeter measures the interaction between drilling fluids and mineral samples containing clays. This instrument can test up to four (expandable to eight) samples simultaneously and compare the results over time. Each test consists of a cylindrical wafer of compressed bentonite, rev dust, or downhole sample. The wafer is constrained around its circumference and exposed to fluid. As the clay reacts to the fluid, the wafer can only expand linearl ...

  • OFITE Celebrates New ISO Certifications

    For years, our quality management system has been ISO 9001:2008 certified. We constantly work hard to meet the strict requirements necessary to maintain this certification and we are proud of the results. Our quality management system helps us provide outstanding customer service, develop superior products, and continuously improve our operations. Now we are excited to announce two big changes in our ISO certification. First, our QMS has been upgraded and is now ISO 9001:2015 certified. The 2015 revision of the 9001 standard reflects the changing business environment. With a greater focus on leadership engagement and risk-based thinking, we are confident our new process will help us be more efficient and improve customer satisfaction. Second, we now have an ISO 14001:2015 certified Environmental Management System. The ISO 14001 standard is helping us manage our environmental responsibi ...

  • Conditioning Cement in the Laboratory

    To define the physical properties of a cement slurry, laboratory personnel need to run a complete suite of performance tests. To produce consistent test results that inform how the slurry will perform under field conditions, technicians need to treat the slurry in a manner that is similar to those conditions found downhole. Atmospheric Consistometers are the ideal tool that enables technicians to condition the target slurry for further testing. Atmospheric Consistometers are a fundamental piece of laboratory equipment. Designed to conform to API Spec 10A/10B2 standards, the Consistometers utilize a heated mineral oil bath to maintain the temperature of the slurry within 2°F (1°C) of the set point. The slurry is conditioned at temperature by rotating at 150 rpm for the duration of the conditioning period. After conditioning in an Atmospheric Consistometer, the slurry is now ready for ot ...

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.