Other

Geophysical Systems Corporation

Senturion Sciences, Inc.

M. D. Wood, Inc.

Daniel Silverman

Everett A Johnson

John R Bailey

J Robert Fort

Milton D Wood

The invention provides a portable display apparatus. The portable display apparatus includes a clipstand that attaches to a barreled device and is used to display information, including holding other metal-backed items. The clipstand surface has a magnet embedded so that different faces can be attached to the clip surface and allow different information to be displayed, and different items to be held. The present invention also includes a clear plastic sleeve, the tag, attached to a metal bar to allow the tag to stick to the magnet. Different cards can be placed into the tag, and the tag may be written on with an erasable marker to allow for different displays. The clipstand may be displayed on a table attached to a barreled instrument or worn on a lanyard.

Holding device with flexible adapter

Display tag with clipstand, barreled instrument, tag, and lanyard

This invention describes a system for access control, wherein a control card is presented to a control means. If the control card is authenticated, then access is gained. If it is not authenticated, access is not gained, the control card is retained, and an alarm may be sounded. The control card contains at least two means; (1) machine readable indicia identifying the card, and (2) a random pattern of micro spots, which pattern is derived (by direct copying--such as by focussed laser beam) from one of a plurality of different patterns, retained in a bank of such micro patterns, each such micro pattern identified by, and selectable in accordance with, different unique indicia, identical with the machine readable indicia on said cards. In use the control card is introduced into the control means and the indicia are read. Master micro pattern corresponding to the indicia is selected from the bank. The card micro pattern and master micro pattern are compared. If the comparison okay, the card is authenticated.

Access security control

An apparatus for controlling the flow of liquid from a conduit into a tank to maintain a selected level, which is an improvement on the conventional type of float-operated flow valves which use a diaphragm clamped between two flanges and positioned over the end of the conduit through which liquid is supplied at a selected pressure. There is a small opening in the center of the diaphragm and there is a second small opening in the second flange of the flow means. The improvement of this invention, is the use, instead of a float mechanism, a pressure-sensitive diaphragm which is responsive to the hydrostatic pressure in the liquid at the level of immersion of the diaphragm. The diaphragm is adapted to close and open the second small opening, and thus to control the flow through the first valve.

Liquid level control apparatus

In the hydraulic fracturing of deep geologic formations for the production of fluid hydrocarbons, and where vertical fractures are formed, a method is described, using seismic geophysical techniques, for determining the azimuth and length of the fractures. This is accomplished by injecting into the formation through the fracture a selected fluid, or producing the fluid hydrocarbons from the formation into the fracture, until the formation, over a selected distance from the walls of the fracture, has a different gas saturation from the condition in the formation farther from the fracture. This condition is mapped by seismic methods.

Method for determining the azimuth and length of a deep vertical

A seismic wave generator and method of using it, which comprises a vertical array of sources at known spacings, for detonation in a seismic wave propagating medium of known seismic velocity; means to initiate the sources in time sequence in a selected series of known different time intervals and recording the seismic waves at a distant location to provide a first electrical signal; and correlating the first electrical signal with a second electrical signal derived from the pattern of initiation, as modified by the travel times of the waves between the several separate charges.

Seismic wave generator

In the injection of fluids into subsurface geological formations, such as for the purpose of recovering a mineral in that formation, it is important that the flow progress of that fluid is known at all points in the subsurface. This information is provided by injecting a selected fluid into the formation. This fluid may be a gas, or a liquid, or a mixture of gas and liquid. When this fluid is in the subsurface formation there will be a mixture of gas and liquid in selected proportion in the formation. This mixture in a geologic formation overlain by a shale, for example, will have a much higher reflection coefficient. A source of seismic waves is operated at the surface, and the received reflections are compared between spaced positions on the surface.

Method of monitoring the spacial production of hydrocarbons from a

A method of fracturing a deep borehole to form a vertical fracture, and of determining the azimuth of the resulting fracture, comprising pumping a pressurized fracture fluid into said well through a pipe from the surface, to provide a bottom hole pressure P which is less than the normal fracturing press (NFP), and generating a series of sharp pressure pulses (SPP) of selected magnitude, such that when added to the pressure P, provide pressure peaks greater than the NFP. By providing arrays of seismic sensors at the surface and determining the direction of propagation of the seismic waves generated by the SPP, the azimuth of the fracture can be determined.

Method and apparatus for fracturing a deep borehole and determining the

This invention describes a system for access control, wherein a control card is presented to a control means. If the control card is authenticated, then access is gained. If it is not authenticated, access is not gained, the control card is retained, and an alarm may be sounded. The control card contains at least two means; (1) machine readable indicia identifying the card, and (2) a random pattern of micro spots, which pattern is derived (by direct copying--such as by focused laser beam) from one of a plurality of different patterns, retained in a bank of such micro patterns, each such micro pattern identified by, and selectable in accordance with, different unique indicia, identical with the machine readable indicia on said cards. In use the control card is introduced into the control means and the indicia are read. Master micro pattern corresponding to the indicia is selected from the bank. The card micro pattern and master micro pattern are compared. If the comparison okay, the card is authenticated.

This invention describes a system for access control, wherein a control card is presented to a control means. If the control card is authenticated, then access is gained. If it is not authenticated, access is not gained, the control card is retained, and an alarm may be sounded. The control card contains at least two means; (1) machine readable indicia identifying the card, and (2) a random pattern of micro spots, which pattern is derived (by direct copying-such as by focussed laser beam) from one of a plurality of different patterns, retained in a bank of such micro patterns, each such micro pattern identified by, and selectable in accordance with, different unique indicia, identical with the machine readable indicia on said cards. In use the control card is introduced into the control means and the indicia are read. Master micro pattern corresponding to the indicia is selected from the bank. The card micro pattern and master micro pattern are compared. If the comparison okay, the card is authenticated.

An underground combustion operation in which combustible material, in a selected geologic formation at a selected depth, is burned by forcing air under pressure down a first well into the formation, and collecting products of combustion at a second well, a selected distance away from the first well. The overburden above the formation is supported, in part, by the combustible material, which might be viscous oil, tar, etc. This material is ignited at the first well and a flame front is formed which burns in the form of a circular front, which moves radially outwardly as a function of time and the rate of air supply. A plurality of electronic tilt meters are positioned at or near the surface of the earth, in at least one linear array directed along the radius from the first well to the second well. Combustion air is provided and the outputs of the tilt meters are amplified and recorded as a function of time. As the flame front progresses, the overburden behind the front will slump, which will be selected by a corresponding slump and tilting of the earth surface, which will be reflected in the corresponding readings of the tilt meters.

Method and apparatus for monitoring the position and movement progress

In the process of recovering minerals, such as hydrocarbons from shallow tar sands, and the like, one method is to create a shallow horizontal fracture within the tar sand. The size and shape of the perimeter is determined, and one or more secondary boreholes are drilled to the formation inside of the perimeter of the fracture. Pressurized air is injected into the fracture and the hydrocarbons are ignited. After a selected period of burning is carried out, the radius to the burn front, surrounding the recovery area, from which the hydrocarbons have been removed, is determined by placing a source of seismic waves at a selected point over the fracture, and a long array of seismic sensors colinear with the source. The source is energized for different conditions of pressurization in the formation and fracture. The reflected seismic waves are converted to electrical signals, which are compared for all sensors. By comparison of the character and/or energy of the reflections, the geometry of the burn zone can be determined.

Method for monitoring the recovery of minerals from shallow geological

A seismic method for mapping horizontal fractures in the earth resulting from the application of fluid pressure, at a selected point, at a selected depth, in the earth, comprising the steps of creating a seismic wave in the earth over the expected position of the fracture, and detecting the seismic waves reflected upwardly at a reflecting interface, at or near the fracture, at each of a plurality of seismic sensors, in at least one radial array. The received signals are recorded for each of two conditions: a first case, when the fracture is pressurized, and filled with fluid, and the roof of the fracture is separated from the base of the fracture; and a second case when the fracture is depressurized, and the roof of the fracture rests on the base. Some sensors will show a different character of reflection signal in the two cases. For these sensors the points of reflection are within the outer perimeter of the fracture. For the other sensors, which show relatively no change in character of reflection signal, the points of reflection are outside of the outer perimeter of the fracture. The process is repeated for both compressional and shear seismic sources, and the electrical signals are compared for compressional and shear sources and for pressurized and depressurized fracture.

Seismic method of mapping horizontal fractures in the earth

A method of and apparatus for determining the precise position of the drill bit on the bottom of a long drill string in a deep borehole in the earth, during a drilling operation. The method comprises placing a plurality of geophones in a three-dimensional array near the surface of the earth, above the expected position of the drill bit in the earth, causing at least a low energy seismic source to be initiated near the drill bit in the earth, repeating the source a number of times, and determining at the surface of the earth the times of initiation of each of the seismic waves. Responsive to the known times of initiation, stacking each of the repeated geophone signals from each of the geophones, for each of the repetitions of the source, whereby each of the stacked signals will be in-phase with those that resulted from earlier and later repetitions of the source. Several embodiments of an improved downhole seismic source are described, and an improved type of three-dimensional array.

Growing community of inventors

Tulsa, OK, United States of America

Daniel Silverman