Volcanic Gas Reservoir Flow Characteristics And The Development Of Technical Countermeasures

Daqing in-depth gas pool breaks east Changyuan Xu family enclosure falls delivers 1018.68×10~8m~3 the natural gas to verify the geological reserve, becomes the Daqing oil region sustainable development the important strength,has become the national fifth easy childbirth to be mad the area. Therefore, development in-depth volcanic rock gas pool reservoir transfusion characteristic and development technology countermeasure research,already has become one of mid-production most urgently needed technical problems, regarding instruction next volcanic rock gas pool development watershed.Beginnning from the domestic and foreign volcanic rock gas pool geology and the development experience investigation and study, the paper summarizes the Thangbinh natural gas field camp city group volcanic rock gas pool reservoir by the big area distribution layered center acidic volcanic rock primarily,Clamps the few intermediate rocks; The volcanic rock fades model assumes the central type - crevasse type eruption, the growth has the volcano channel, invades shows oif, the eruption and gushes out four kind of lithic facies 12 kind of subfacies, by gushes out upside the subfacies, lower part the subfacies,The eruption hot detritus flows the subfacies for the most advantageous reservoir. The reservoir space has the multi- origins, by primary blowhole and secondary corrosion hole primarily. The reservoir is the crack - hole,I and II kind of main force produces the stratigraphic interval by the blowhole primarily,The crack does not grow; III kind compactly stores the stratigraphic interval blowhole not to grow,Crack comparison growth. Nearby the big fault the crack grows, the fracture density is big and also the opens nature is good. Home court volcanic rock reservoir by II kind of, III kind of throat primarily, has the few I kind of throat. II kind of and III kind of throat pore throat radius ratio is big,Indicates the megapore by the small throat control,The gas well produces can reduce; The throat characteristic has great influence on getting a light from another light the precipice reservoir gas well to produce. Side the gas pool for contains the bottom water lothological - structure gas pool.In the base of stores infiltrates the characteristic research , with the technology gas engineering, simulation, and so on, study the reasonable produce of gas wells, reasonable gas production speed, reasonable pattern well spacing and horizontal well development and so on; Forecasts the natural gas field the development target,Optimized gas pool development plan, It provides the theory instruction for the reasonable well pattern deployed and the natural gas field highly effective development. It also has the important model function to the pine distant basin similar gas pool development, and has the broad promoted application prospect.