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Slotting perforation system for recovery oil and gas well
[Category : - MECHANICAL ENGINEERING- OTHER]
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Slotting Perforation Technology (SPT) - cutting of continued deep slots along the wellbore. Cutting is done by special SPT tool/equipment through casing, cement into the productive layer to a depth 3 - 5 ft. In this case, the circular stress conditions are redistributed to the ends of the slots, unloading the near wellbore zone, increasing permeability, positive reservoir properties, and accordingly the productive inflow.
Modern well development methods can extract up to 50% of all reserves, the rest remains in the ground. Any of the methods based on slotting perforation technology allows extract up to 80-90% of residual reserves due to the unloading of the borehole zone (and corresponding increase in productive formation permeability, hydrodynamic connections and corresponding increase the productive inflow. Therefore, it is possible to raise the rate practically in any oil well (if it is not watered after fracturing and suitable for recompletion).
According to statistics the average low-productive oil well (0-1 bbl./day) after SPT begins to give 25-30 bbl./day (sometimes more) and this effect can last 10-15 years.
Patent US 8863823 confirmed and protected by United States Patent and Trademark Offices and protects the rights to the invention not only slotting perforation technology (SPT) tool/equipment itself, but of all the constituent components separately as perforator w/nozzles and nozzle-holders, return block w/special spring and rod, hydraulic block - closed self-regulating depending on depth and pressure w/floating valve pistons, dozing device and sealed lids system.
SPT tool/equipment. Patent US 8863823 is active. The invention has been used in practice since 2011 by Enhanced Oil Recovery (EOR) with Slotting Perforation Technology (SPT) professional service-companies.
Currently, it is fully possible to organize EOR SPT professional service at any area including office/workshop/laboratory, SPT tool/equipment, consumable and spare parts supply, training and technical support.
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Benefits from EOR SPT use:
According to statistics the average low-productive oil well (0-1 bbl./day) after SPT begins to give 25-30 bbl./day (sometimes more) and this effect can last 10-15 years. The whole procedure from the beginning to the end costs to owner of a dry well $ 150-200 thousand dollars (naturally including our SPT service around $ 30 thousand dollars). It is very easy to calculate that at oil price $ 60 per bbl. and well gives only 25 bbl./day it will be $ 1500/day, payback period 5 (five) month, after that annual exemplary profit $ 600 thousand dollars (every year from each oil well during 10-15 years!) Also, such well can be quickly sold for $ 1 (one) million dollars and start developing the next one (and it's all for the funny $ 200 thousand dollars !)
According to received from one Canadian coiled-tubing company offer, only Patent's license for use this SPT tool/equipment in a specified area for five years is cost $ 1 (one) million dollars.
Patent publications:
US 8863823
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