Data Transmission System

The Data Transmission System (DTS) is a core communications technology that Stolar is developing.  It has applications in several Stolar initiatives, including drill string radar (DSR), and slickline DTS projects.  DTS uses modulated radio waves to communicate in real time with downhole sensors using the drill string and/or the uninsulated slickline cable as the transmission medium.  DTS is adaptable to most geological and geotechnical drilling applications, including exploratory drilling, coal-bed methane drilling, oil and gas reservoir drilling, and dewatering and monitoring well drilling.  The Stolar DTS system has many advantages over other systems in use, including the following:

·         Designed to retrofit to existing infrastructure; it does not require re-engineering or modification of existing equipment.  It does not require addition wires or cables and is highly adaptable to many sizes and grades of drill pipe.

·         Functions in both metal-cased and uncased wellbores

·         Operates regardless of hydraulic pressures, acoustic conditions, or proximity to, or contact with, the side of the wellbore or well casing

·         Compatible with a wide variety of communications formats, allowing the DTS to interface with existing communications and data processing equipment and software used by the industry.

·         At 2.4 kbps, the DTS has an extremely fast data rate compared to most common measure while drilling (MWD) systems in use.

DTS is integral part of the DSR project, (patent pending) providing communications with drill string sensors for real-time MWD applications.  DSR images the strata surrounding the drill bit then transmits the data up the drill stem.  This allows the operator to use the data to navigate the drill string in real time.  This is particularly useful in CBM applications, where the operator must keep the drill string at a specific level within the targeted strata.

The DTS Slickline application (developmental) (patent pending) brings real-time wireline (conductor wire) well logging capabilities to the slickline format.  It has the following features and advantages:

o        Real-time data transmitted to the surface recording unit.

o        Includes battery pack to power downhole tools.

o        Saves time on location rigging up, rigging down.

o        Lighter footprint with smaller logging truck.

o        Uses standard surface logging systems, i.e., Scientific Data Warrior System.

o        Two-way communication also allows sending commands     downholePerforating capability

o        Duplicates wireline ability to monitor downhole tool response.

o        System may be enhanced to duplicate multiple conductor capability.

o        Program’s initial target depth is 5,000 feet.