涩北一号气田隔层特征及对气田出水影响研究

涩北一号气田作为第四系疏松砂岩气田，由于特殊的沉积环境形成了纵向上砂泥频繁交互的分布特点，气田泥质隔夹层广泛分布，并具有一定的厚度和渗透性。通过对涩北气田隔层岩性、分布及渗透率特征分析研究，认为气田泥岩隔层较发育，具有一定的水蕴藏量，结合气田出水现状，认为隔层水窜是目前气田气井出水的主要原因之一。

Study on Interlayer Features of Sebei No.1 Gas Field and It′s Influence on Water-production

Due to special sedimentary environment,Sebei No.1 gas field formed vertical distribution with frequent alternative deposition of sand and shale.As a Quaternary unconsolidated sand gas field,it widely distributed mud sandwich，which has certain thickness and permeability.Based on the analysis of lithology,distribution and permeability of Sebei gas field interlayer,the author believes that mudstone barrier is well developed,with some water content.Water channeling of claystone barrier is the main source of water breakthrough in accordance with the status of water production.Therefore as to water control and precaution it is very important that the author researches the characteristic of interlayer and its operation on water breakthrough.