Model 9-P and Model 18-P Soap Stick Launcher

The Pro-Seal automatic Soap Stick Launchers increase gas well production by automatically dropping soap sticks (surfactants) into the wellbore. Without an automatic Launcher, soap sticks are manually dropped by a two-valve launcher requiring the operator to make multiple visits to the well which increases OPEX.

By utilizing the programmable automatic Soap Stick Launcher, surfactants can be dropped automatically over an extended period of time. Introducing soap sticks at the optimum point in the flow regime can dramatically improve the performance of a well’s production plus reduce the man hours required to service the well. 

The Model 9P Soap Stick Launcher is a low profile unit measuring only 32″ tall. With a capacity of nine 1-1/4″ diameter soap sticks, the Model 9P can be programmed to drop 1 to 3 soap sticks per cycle.

When a flowing gas well requires additional surfactant to maintain maximum production, the Model 18P is the unit of choice. Measuring 15″ taller than the M-9P, the Model 18P offers a capacity of eighteen 1-1/4″ diameter sticks and is programmable to drop 2, 4 or 6 sticks per cycle.

The Model 9P SoapStick Launcher holds 9 soapsticks

The Model 18 P holds 18 soapsticks and drops a minimum of 2 at each launch.

Model 9-P and M-18P automatic Soap Stick Launchers have the following features:

  • Actuation: The Model P Launchers are actuated by gas pressure from the tubing.

  • Gas Supply: The M-P includes a self-dumping drip-pot that dries the gas supply coming from the tubing. A built-in regulator maintains the pressure at 35 PSI. Supply gas may be piped from the casing or other sources. The Processor monitors the supply gas for predicted failure and flags the operator accordingly.

  • Max. Flow: The automatic Soap Stick Launcher can operate without a shut-in period by dropping a soap stick on the fly, allowing the well to flow continuously if the liquid rate is below 25 BPD (2-3/8” tubing). Review the flow rate discussion here.

  • Flow Rate - Gas: The Model P can direct supply gas to open/close a pneumatic valve in the flow line such as the Kimray 2200SMT. This function is required when the well produces gas above the allowable wing-block rate. Review the flow rate discussion here.

  • Flow Rate - Liquids: The Model P can close / open a pneumatic Motor Valve in the flow line when the well produces an excess of water above the allowable wing-block rate. Combining stop-cocking with a soapstick is the solution for de-watering -- up to 200 barrels of liquid per day in 2-3/8” tubing. Maximum Flow Rate chart.

  • Motor Valve: A pneumatic motor valve is ideal for shutting-in weaker wells that benefit from a pressure/volume building period of 1 or 2 hours.

  • Tank Option: For a weaker well, the Model P Soap Stick Launcher can drop a stick against the flow, wait 30-45 minutes, then re-direct the gas flow to the Tank. This reduction in back pressure will allow the fluid slug to reach the surface.

  • Casing Flow: The P can alternately flow from the casing or the tubing for the purpose of de-watering the well bore of high flow-rate locations. Download the Manual or contact us to discuss this feature.

  • Casing Pressure: A rise in casing pressure indicates fluid loading in the tubing. Adding a transducer or Murphy Switch on the casing side can initiate a stick-drop into the tubing when the casing pressure reaches a pre-set value.

  • Controller: The Solar Powered microprocessor features a continuous digital readout indicating the quantity of soap sticks remaining in the Launcher as well as the time remaining until the next scheduled drop.

  • Telemetry: Soap sticks can be dropped from an RTU command and the operation of the flow-control valve can be initiated by the RTU or the Launcher Controller, your choice.

  • Deactivation: The Controller of the automatic Soap Stick Launcher can be disabled or deactivated indefinitely without loss of the time settings previously programmed. This is a feature particularly helpful in fields that share a compressor with a nearby well on Plunger Lift.

  • Connections: All Model P are adaptable for 2″ NPT, 2-3/8″, or 2-7/8″ wellheads. We also offer low-profile adapters for 2″ NPT through 4-1/2″-8 rnd.

  • Digital Display: The Model P Launcher will display a helpful error message anytime a system fault is detected.

  • Insulation: The Model P incorporates polyurethane insulation to protect and preserve the integrity of the on-board soap sticks.

Model 9P

Model 18P


The Model P and the Model E Launchers use the same Processor and offer the same general features. The distinctions of using the Model P are: 

  • the benefit of using supply gas when it is readily available;

  • the benefit of using preexisting pneumatic valves in the flow line;

  • the avoidance of having extra solar battery power on location;

Model 9P-2 is a pneumatic operated Launcher which uses gas pressure from the well head to activate the stick launch. Alternately, the M-9P (9P-1 or 9P-2) can use air pressure supplied from a solar powered air compressor - as was done on this location. 

In the operation of this particular location, the Launcher is programmed to: 

  1. Close the red Kimray flowline valve on the left to shut-in the well for 4 hours

  2. Reopen the well to flow for 10 minutes to sell ‘head gas’ into the sales line

  3. Close the left-hand valve and open the right-hand Kimray to flow to the tank for 2 hour

In the course of 2 hours, the 4” production casing spits ~2 barrels of water into the tank. This Model 9P-2 is set to repeat the process every 4th day. Ergo, this location makes ½ barrel of water per day and the gas production has increased from 100 MCFD to 130. The flowing line pressure in this field is 10 psi, hence the need for the air compressor on site.

The -2 designation means that the M-9P-2 has the necessary internal switching valves to control 2 pneumatic valves. Alternately, the Model 9E-2 is used to accomplish the same task using 12volt ABV valves in the flow and tank lines.

The dual bronze colored ball valves are used to introduce an anti-freeze stick into the flow stream during a cold-snap. We offer the bottom valve with a temperature triggered actuator for autonomous use.