field testing
Initial testing of the well is necessary to perform a Check for Economics and to establish an optimum pumping rate as well as percent oil and water production.
This testing phase is designed for mature oil fields and wells where most of the primary oil has been depleted and the well is classified as a "stripper well." Most of these wells have a water drive and the oil moves with the water. This testing phase will utilize a special testing wireline unit that will pump at various speeds to establish the optimum fluid level in the annulus. This will formulate the correct pump speed and rate to maintain a fluid level in the annulus at a point just above the level of the pump.
By using this procedure it will be possible to pump twenty-four hours a day without the use of clocks for shutdown times.
Procedure
- Take sample every 30 minutes and measure percentage oil cut.
- Fluid level in annulus is measured by surface sonar readout.
- Once optimum annulus fluid level is established, the computerized lifting system is set to maintain the desired annulus fluid level.
- Upon completion of the test phase, the tower unit is installed and its computerized system controls the pumping rate.
A test unit is moved onto location to determine rate of production and to determine the economics of putting the well on production. This testing phase will utilize a special testing wireline unit that will pump at various speeds to establish the optimum fluid level in the annulus. This will formulate the correct pump speed and rate to maintain a fluid level in the annulus at a point just above the level of the pump. By using this procedure it will be possible to pump twenty-four hours a day without the use of clocks for shutdown times.
Summary
The equipment, which is being designed and tested, should be usable on thousands of wells that have been temporarily abandoned. We believe that the method and logic used to evaluate these wells will be of great assistance in increasing production and making these old wells economical again. We believe that this method has as much potential as many other new techniques that have introduced a paradigm shift from the conventional methods to another method of pumping oil wells.Our continuous improvement process will enhance this new pumping system. In addition to the tools that are being used, new tools will be added to the system as it is proven to be a viable economic method. An example would be the Dump Valve and the Vent Valve that have been designed to run below the ball and seat. Also, a New Standing Valve run at the top of the barrel will reduce "gas locking" and "pounding" problems.
some testing field images
