All core holders are built with high quality stainless steel and can include wetted parts made from Hastelloy C or 316SS. DCI’s core holders for measuring electrical resistivity are electrically isolated and include electrical feed thru for multi-tap measurements (up to 8 electrodes). Other core holders include measuring pressure or temperature gradients along the core. The pressure taps can be combined with the electrodes to make both pressure and resistivity measurements on the same core. A few of the options that can be configured for each core holder are listed below:

• Core holder type
• Maximum pressure
• Maximum temperature
• Wetted parts
• Jacket material
• Number of pore pressure ports
• Type of confining and pore pressure ports
• Confining temperature probe

Because quality is of the utmost importance, all core holders are pressure tested to insure trouble free operation.

DCI can provide mounting brackets and stands for your core holder. The most popular is a pivoting mount frame that allows for horizontal or vertical orientation of the core holder. Others include roller-supported frames or stands for banks of core holders. There are a number of stand options available.

If you still need something that is not shown on the product selection table contact us. DCI has the unique ability to economically build a custom core holder to fit any need.  If you need help selecting a core holder or would like to review the options please feel free to contact us and we can review your application and suggest a configuration we think works best.

DCI’s piston-type accumulators/separators are designed to be easy to fill and clean. The end plug and threaded retainers are designed as a single assembly allowing for easy removal and reassembly. All of the models can be assembled and disassembled by hand, no tools necessary. These are ideal for protecting pumps from corrosive fluids, flowing multiple fluids simultaneously, buffering and dampening pressures, and much more. Standard accumulator material is high strength stainless steel, but can be specified with wetted parts being Hastelloy for extra corrosion resistance. The standard piston material is Teflon but optional non-galling metal pistons are also available. DCI can also provide stands to mount accumulators if needed.

See the accumulator configuration sheet in the download section to see the standard options that are available. If you still need something that is not shown on the product selection table contact us. DCI has the unique ability to economically build a custom accumulator to fit any need.

Precision Measurements

The two phase acoustic separator consists of two precision bore tubes mounted vertically in a base connection block. One tube acts as a separation tube, where two immiscible fluids of different density separate due to gravitational forces. The second tube is the sensing tube where a meniscus between the two fluids is undisturbed by any flow in the separation tube. The higher density fluid communicates between the two tubes in the base connection block. The lower density fluid communicates through a similar connection block mounted to the top of the two tubes. An acoustic transducer mounted in the base of the sensing tube uses the reflection time of acoustic waves reflected from the meniscus between the two fluids to measure the volume of the higher density fluid in the separator. Proprietary data reduction techniques provide high accuracy, high resolution data.

Better Design

DCI uses longer precisely machined bores with smaller diameters to increase resolution. In this design a small change in volume creates a larger increase in reflection time thus giving better resolution and increased accuracy. The electronics for the two phase separator give the user the capability to adjust signal amplitude and trigger level making the most difficult to detect meniscuses easily visible.

Continuous Flow Acoustic Separator Technology

DCI’s CFAS™ technology (Patented) incorporates the two phase separator with two VPA syringe pumps to provide highly accurate measurement of the volume of two different phases that are produced in a core flood experiment, even when the volumes of fluids produced exceeds the volume capacity of the two phase separator. In this arrangement, one of the VPAs is operated in external transducer feedback mode, with the analog signal from the two phase separator as the feedback signal. In this mode, the VPA receives any of the higher density fluid that is produced and maintains the meniscus level at a constant level in the separator. Thus, the VPA provides a very accurate measurement of the volume of the higher density fluid that is produced. The second VPA is connected to the upper outlet port of the two phase separator (outlet for the lower density fluid). This VPA operates in a pressure feedback mode, thus controlling the back pressure in the two phase separator, and on the sample in the core flood experiment. Any of the lower density fluid that is produced by the experiment is received by this second VPA, and the volume received is measured precisely. Using dual cylinder syringe pumps in each of these two functions provides the ability to receive infinite volume of either fluid that is produced by the system. This allows volumes of fluid larger than the capacity of the two phase separator to flow through the sample while equilibrium is established, and still maintain a precise measurement of each fluid volume that is produced.

Software

Software for the two phase separator is provided with every unit and displays the volume of the lower density fluid as well as graphical representation of fluid levels inside the cylinders. The acoustic separator software is easily integrated into more complex systems such as core flooding programs to keep track of produced fluids and saturation state.

The bench top steam generator produces super-heated steam as a standalone unit and can be easily incorporated into any core flooding systems. The system consists of a coiled tube wrapped around a heater cell enclosed in insulation.  The inlet end of the coiled tube connects through a bulkhead to an external pump.  The pump delivers water into the tube at a constant flow rate set by the user.   Pressure is typically controlled by a customer provided back pressure regulator.  There is a thermocouple on the outlet of the coiled tube to measure the temperature of the steam.  This temperature can be read on a display found on the front panel.  The temperature of the steam is controlled using a temperature controller on the front panel.  There is also an emergency stop button on the front panel to shut off power to the heaters immediately if necessary.

Precision Measurements

The two phase acoustic separator consists of two precision bore tubes mounted vertically in a base connection block.  One tube acts as a separation tube, where two immiscible fluids of different density separate due to gravitational forces.  The second tube is the sensing tube where a meniscus between the two fluids is undisturbed by any flow in the separation tube.  The higher density fluid communicates between the two tubes in the base connection block.  The lower density fluid communicates through a similar connection block mounted to the top of the two tubes.  An acoustic transducer mounted in the base of the sensing tube uses the reflection time of acoustic waves reflected from the meniscus between the two fluids to measure the volume of the higher density fluid in the separator.  Proprietary data reduction techniques provide high accuracy, high resolution data.

Better Design

DCI uses longer precisely machined bores with smaller diameters to increase resolution. In this design a small change in volume creates a larger increase in reflection time thus giving better resolution and increased accuracy. The electronics for the two phase separator give the user the capability to adjust signal amplitude and trigger level making the most difficult to detect meniscuses easily visible.

Continuous Flow Acoustic Separator Technology

DCI’s CFAS™ technology (Patented) incorporates the two phase separator with two VPA syringe pumps to provide highly accurate measurement of the volume of two different phases that are produced in a core flood experiment, even when the volumes of fluids produced exceeds the volume capacity of the two phase separator.  In this arrangement, one of the VPA’s is operated in external transducer feedback mode, with the analog signal from the two phase separator as the feedback signal.  In this mode, the VPA receives any of the higher density fluid that is produced and maintains the meniscus level at a constant level in the separator.  Thus, the VPA provides a very accurate measurement of the volume of the higher density fluid that is produced.  The second VPA is connected to the upper outlet port of the two phase separator (outlet for the lower density fluid).  This VPA operates in a pressure feedback mode, thus controlling the back pressure in the two phase separator, and on the sample in the core flood experiment.  Any of the lower density fluid that is produced by the experiment is received by this second VPA, and the volume received is measured precisely.  Using dual cylinder syringe pumps in each of these two functions provides the ability to receive infinite volume of either fluid that is produced by the system.  This allows volumes of fluid larger than the capacity of the two phase separator to flow through the sample while equilibrium is established, and still maintain a precise measurement of each fluid volume that is produced.

Superior air connections make for robust, leak free, and long lasting operation at high temperatures. Tests where automation is necessary or the environment is not ideal to be manually opening or closing valves, the DCI two and three way pneumatic valves are the answer. These valve offer robust opening and closing and capable for almost any application.

DCI’s floating piston mixing cylinders are designed to be easy to fill and clean.  The two port system, one port for driving fluid and the other for fluid outlet, are easy to connect and operate.  The end plug and threaded retainers are designed as a single assembly allowing for easy removal and reassembly.  The mixer can be assembled and disassembled by hand, no tools necessary.  The mixer has a handle and a stand to make transportation and set up easy and convenient.  The mixer can be specified in a variety of sizes and pressures for a variety of different mixing applications.  DCI has the ability to economically build a custom mixer to fit any need.

The glass transfer vessel makes filling or transferring fluid quick and easy.  The transfer vessel is designed to be easy to fill and clean.  The vessel can be specified in a variety of sizes and with a variety of different connection types.  DCI has the ability to economically build a custom Glass Transfer Vessel to fit any need.

The adjustment knob on the sight glass assembly easily changes the viewing plane. The extra fine threads allows for precise depth adjustments. An extra port on the top of the sight glass body can be used to insert known dimensional geometry, used for calibrating pixel size. Camera and software are available upon request.

The Gas Booster Cart consists of a gas booster that is mounted to the bottom of a wheeled cart and plumbed to various pressure regulators, valves and gauges which are conveniently mounted on the top of the cart.  The Gas Booster Cart takes bottle pressure gas and boosts it to a higher pressure.  The cart requires 100 psi air to do this.  It can boost gas up to 10,000 psi or 20,000 psi and store up to 2 Liters of boosted gas. The amount of time it takes to boost gas to a higher pressure depends on the starting pressure of the gas, the desired final pressure of the gas and the air delivery capability of the pressurized air source. The boosted gas is connected to a pressure regulator and can be regulated to any required pressure below the boosted gas pressure.  Contact a DCI engineer if different specifications are needed.

The ABPR is a digital automated back pressure regulator that uses state-of-the-art motor and control for the best possible accuracy. The system boasts a 7” touch screen user interface with easy to use intuitive software. Also provided with the system is software for remote computer control of the automatic back pressure regulator over Ethernet communication.  The learning curve for this system is minimal, just connect tubing to the inlet and outlet of the back pressure regulator, power on the system and you are ready to start controlling back pressure.

This system utilizes a top quality EquilibarTM dome loaded style back pressure regulator available with a variety of wetted materials. As shipped the back pressure regulator is attached to the control box allowing for easy plumbing in and out of the back pressure regulator.  For other configurations, the back pressure regulator valve body can be easily removed from the control box and mounted remotely in a high temperature atmosphere. All that is required is the addition of tubing from regulator’s integrated position to control box location.