Sino G&E Achieves a Gas Flow Rate of 2 MMscf/d at TB-23 Well in Linxing PSC

Sino Gas & Energy Holdings Limited (Sino Gas, the Company) revealed Wednesday that a flow rate of 2.0 million standard cubic feet per day (MMscf/d) has been achieved from a middle zone of TB-23 on the Linxing Production Sharing Contract (PSC) in Ordos Basin, Shanxi Province, China.

The 13.1 feet (4 meters) pay zone was fracced on TB-23 in the prospective central-western portion of Linxing (West). Flow testing conducted over 5 days achieved a stable flow rate of 2.0 MMscf/d at a relatively stable flowing tubing head pressure of 1,250 psi (approximately 2.36 MMscf/d calculated at standard field pressure of 200 psi).

The results represents the highest measured gas flow from a single fractured zone and is well in excess of the previously recorded minumum flow rate from the middle lower zone of approximately 230,000 standard cubic feet per day. Seismic interpretation of the zone tested shows a high level of frequency across the acreage. Engineering planning is underway to connect the well into the pilot pipleline production program.

Commenting on the result Sino Gas Chairman, Gavin Harper said "This is a tremendous result, which comes after careful analysis and review to optimize fracture stimulation treatment in recent months. It is the third in a series of successful tests on Linxing (West), with others including testing of a lower level unstimulated zone at TB-26 and the nine stage frac testing of the first horizontal well at TB-1H."

Exploration disclosure for testing of TB-23 is detailed below:

  • The name of the well - TB-23 (Vertical Well)
  • The location of the well and the details of the permit or lease in which the well is located - Linxing Production Sharing Contract (PSC)
  • The +entity's working interest in the well - 31.70 percent
  • If the gross pay thickness is reported for an interval of conventional resources, the net pay thickness - Electric wireline logs identified 51.5 feet (15.7 meters) of net pay
  • The geological rock type of the formation drilled - Coal bearing formations from the Permian to Carboniferous System
  • The depth of the zones tested - Test target pay zone was at a depth of 6,343.5-6,356.6 feet or  1,933.5-1,937.5 meters (lower zone)
  • The types of test(s) undertaken and the duration of the test(s) - Fracced and gas flow tested for 5 days
  • The hydrocarbon phases recovered in the test(s) - Gas
  • Any other recovery, such as, formation water and water, associated with the test(s) and their respective proportions - None
  • The choke size used, the flow rates and, if measured, the volumes of the hydrocarbon phases measured - Variable choke size. Post-frac test gas rate of 2 MMscf/d with well head pressure of ~8.62MPa (1,250 psi)
  • If applicable, the number of fracture stimulation stages and the size and nature of fracture stimulation applied - One stage
  • Any material volumes of non-hydrocarbon gases, such as, carbon dioxide, nitrogen, hydrogen sulfide and sulfur - TB-02 gas sample from same formation shows CH4 96.29 percent, C2~C6 1.21 percent, CO2 1.94 percent, N2 0.56 percent
  • Any other information that is material to understanding the reported results - None


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