Dorffer
Daneil F. Dorffer, Houston, TX US
Patent application number | Description | Published |
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20100063738 | FLUID CONDUCTIVITY MEASUREMENT TOOL AND METHODS - An apparatus and method for measuring the conductivity of borehole fluid. Based on the fluid conductivity, the fluid type may also be identified. The apparatus and method can be useful in differentiating between native water and injected water in oil recovery operations. The apparatus and method presented can also be used to calibrate testing and production equipment allowing for more reliable and accurate measurements. The apparatus and method presented can further be used to better characterize water to oil ratio in reservoirs. | 03-11-2010 |
Daniel Dorffer, Houston, TX US
Patent application number | Description | Published |
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20110202276 | SYSTEMS AND METHODS FOR DOWNHOLE FLUID TYPING WITH PULSED NEUTRON LOGGING - Downhole fluid typing with pulsed neutron logging. A method comprises obtaining gamma count rates at a particular borehole depth; calculating a fluid type indicative response value for the borehole depth; determining at least one fluid type based on the response value for the particular borehole depth; and producing a display of the at least one fluid type corresponding to the borehole depth. A system comprises a downhole tool comprising a neutron source and at least one gamma detector; gamma count rates produced due to gamma arrivals at the gamma detector(s); and a processor coupled to a memory, wherein the memory stores a program that, when executed by the processor, causes the processor to: calculate a fluid type indicative response value for a particular borehole depth based on the gamma count rates; and determine at least one fluid type based on the response value for the particular borehole depth. | 08-18-2011 |
20130213639 | MILLING WELL CASING USING ELECTROMAGNETIC PULSE - An electromagnetic perforation device for well casings includes a coil disposed around a core carried by a mandrel. The device further includes a power supply coupled to a current supply device, which is coupled to said coil. A stabilizing member extends from the mandrel and spaced apart on the mandrel from the coil core. The electromagnetic perforation device may be positioned in a well casing, and the current supply device may rapidly supply a current to the coil to created an electromagnetic field in the coil and simultaneously induces a magnetic field in the well casing. The coil, current, and well casing may be selected such that electromagnetic field and the magnetic field produce repulsive magnetic forces that are sufficient to overcome a yield strength of the well casing and perforate the well casing. | 08-22-2013 |
Daniel Francois Dorffer, Houston, TX US
Patent application number | Description | Published |
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20130313420 | COMBINED SONIC/PULSED NEUTRON CASED HOLE LOGGING TOOL - A through casing formation evaluation tool string | 11-28-2013 |
20140103202 | Combined Sonic/Pulsed Neutron Cased Hole Logging Tool - A through casing formation evaluation tool string | 04-17-2014 |