D&D Design Tech Inc

Call us today

(325) 574-1033

Our Location

1916 6th St. • Snyder, TX 79549

Open Hours

Mon – Fri 8:00 am – 5:00 pm

FAQ

Learn About the Benefits of D&D DesgnTech's Products

D&D DesignTech Products Solve Problems For You

Our products solve problems, improve efficiency and save money for our customers.  Here are a few of the problems that our products address.

 

Inconsistent Chemical Injection

PROBLEM
Injecting excessive or inadequate amounts of chemical can cause costly waste and greatly reduce the effectiveness of your chemical application strategy. Improper chemical rates also can cause both surface and downhole problems that can lead to costly cleanup, repairs and downtime.

OBJECTIVE
To consistently inject the desired chemical at the desired rate and volume specified by your chemical applications specialist.

SOLUTION
Installing a quality chemical pump along with the dual barrier downhole injection valve is key to maintaining a consistent level of chemical in the capillary string. When bottom hole and crack pressures are exceeded, the valve will open and discharge desired chemical.

Back Flow

PROBLEM
Downhole chemicals, gasses and fluids are capable of backing up into the capillary tubing string. These can be highly corrosive, caustic, high in chlorides and acidic – all of which can have adverse effects on your tubing string.

OBJECTIVE
To prevent harmful well components from entering the capillary string.

SOLUTION
The dual barrier downhole injection valve contains a double safety for prevention of back flow. Our solution consists of high-quality corrosion resistance barriers and military-grade elastomers where applicable.

Free Flow and Siphoning

PROBLEM
Chemical free flow can occur when the bottom hole pressure drops below the hydrostatic column pressure.  This can allow chemicals to flow freely through a conventional check valve until the differential between the bottom hole pressure and the hydrostatic column pressure becomes great enough to stop the free flow of chemical. If this imbalance continues, it can create a siphon effect that could release unintended amounts of chemicals into the well.

OBJECTIVE
To avoid either free flow or siphoning conditions from occurring and to reduce a costly waste of chemicals.

SOLUTION
The dual barrier downhole injection valve eliminates these problems by only allowing chemical to inject into the well when the set crack pressure of the valve is exceeded. In addition to the downhole injection valve, a surface anti-siphon valve is highly recommended.  The ASV-1000 has three functions.  Along with being a true anti-siphon valve, it contains an inline check valve and features an adjustable backpressure device.

Surface Manifold Filtration

PROBLEM
Dirty chemical or small pieces of debris can create problems that can cause inconsistent chemical injection. These problems include back flow, free flow, siphoning and plugging.

OBJECTIVE
To remove any particulate large enough to create a possible problem with either the anti-siphon valve, capillary string and/or downhole injection valve.

SOLUTION
The custom surface manifold assembly is designed to be installed between the chemical pump and capillary string.  The preassembled and tested assembly contains all of the above mentioned surface protections.  This device provides filtration, pressure isolation and chemical siphoning protection, and it incorporates a pressure release valve for safe maintenance.