石油与天然气地质 ›› 1994, Vol. 15 ›› Issue (4): 293-298.doi: 10.11743/ogg19940404

• 论文 • 上一篇    下一篇

川中X1井高产水层储集特征及天然气储量评估

陆正元1, 王洪辉1, 杨胜忠2, 王奕凯2   

  1. 1. 成都理工学院, 610059;
    2. 蓬莱制盐化工厂, 四川629021
  • 收稿日期:1993-11-15 修回日期:1994-05-23 出版日期:1994-12-25 发布日期:2012-01-16

RESERVOIR CHARACTERISTICS AND GAS RESERVE ASSESSMENT OF HIGH PRODUCTION-WATER LAYERS AT X1 WELL IN CENTRAL SICHUAN

Lu Zhenyuan1, Wang Honghui1, Yang ShengZhong2, Wang Yikai2   

  1. 1. Chengdu Institute of Technology;
    2. Peagtai Salt Refininery, sichuan
  • Received:1993-11-15 Revised:1994-05-23 Online:1994-12-25 Published:2012-01-16

PDF (PC)

738

被引次数

15

摘要：

川中X1井经过近30年的卤水开采,已由一口特大水井变为具有工业开采价值的气水同产井.X1井地下裂缝系统具有独立封闭性,产出大量气水的动力主要是水体上方天然气弹性膨胀和岩石孔隙缩小.根据生产动态资料,利用物质平衡原理计算出该系统中天然气储量可观,今后生产中天然气产量增长将明显大于地层卤水.在四川盆地上三叠统致密砂岩裂缝性储层中,同样可以通过水井排水找到钻井未曾发现的天然气.

关键词: 致密砂岩, 裂缝系统, 排水找气, 储量计算, 气水比

Abstract:

X1 well, a great brine well in Central Sichuan, has become a commercial brine-gas well through about 30 years brine deviopment.Based on reservoir petrophysics and regional correlation, it is thought that the fracture system of the well is an independent sealing system with well developed subsurface fractures and has enriched abundant natural gas. The driving force of the well’s water and gas production is primarily resulted by elastic expansion of the gas on the water body and pore space contraction in the system. Depanding upon the production data and meterial balance theory, it has been calculated that there would be a great deal of gas in the system. The increase in gas production of the well would be more than that of water in future. It is proposed that"finding gas by water withdrawal"can be applied to the fractured reservoir in the compacted sandstone of the UPPer Triassic in Sichuan Basin.