川西新场气田地层水分布规律与对策

DISTRIBUTION LAW OF THE RESERVOIR WATER IN XINCHANG GAS FIELD IN WEST SICHUAN AND PRODUCTIVE COUNTERMEASURES

川西新场气田属于多层系、低渗透、非均质的砂岩气田,尽管投入了大量的人力对地层水赋存规律开展了多轮研究,但是没有一种理论能完全解释地层水产出现状,对气藏开发也没有提出非常有针对性的对策,文章从气田成藏历史、运移、地层水产出特点提出川西新场气田是残余水与边水共存的新观点,并针对不同地层水源提出排水、控水生产的两种对策。

The Xinchang gas field in West Sichuan is a sandstone field with multirpayzone, low permeability and heterogeneity. Although multi-round researches have been carried out for ascertaining the occurrence law of reservoir water, there is not a theory which can fully interpret the current situation of reservoir water production and there are not any countermeasures being stroungly directed against gas reservoir development. In the paper, a new opinion about the coexistance of residual water and edge water in Xinchang gas field in West Sichuan is put forward on the basis of studying the reservoiring history of gas field, the oil and gas migration and the reservoir water producing characteristic, and the two countermeasures of water-draining and water-controlling are proposed in light of different water sources.