徐深气田火山岩气藏水侵识别与预测方法  

IDENTIFYING AND PREDICTING METHODS OF THE WATER INFLUX RATE FOR VOLCANIC GAS RESERVOIRS OF XUSHEN GASFIELD

作　　者：邵锐[1] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《大庆石油地质与开发》2014年第1期81-85,共5页Petroleum Geology & Oilfield Development in Daqing

基　　金：中国石油股份公司科技攻关项目"徐深气田火山岩气藏有效动用及开发技术"(2011B-1506)

摘　　要：徐深气田火山岩气藏普遍发育边水或底水,水侵导致了气井产能下降,气藏水侵的准确识别、水侵量的快速预测是制定合理开发策略的重要依据。以徐深气田D区块为例,建立了一套识别气藏水侵和快速预测水侵量的综合方法,首先通过动静态结合综合识别出气藏是否存在水侵,其次采用正向和反向2种思路计算D区块不同时期水侵量,通过引入虚设压力与累计产气量关系曲线反过来验证前2种方法计算结果的可靠性,最后通过计算不同阶段的水侵量,建立水侵量与累计产气量之间的函数关系,实现水侵量的快速预测。结果表明,这套综合方法不仅能可靠识别气藏是否发生水侵,而且能实现水侵量准确计算和快速预测,可以用于徐深气田其他区块的水侵识别与预测。The bottom and edge waters are generally well-developed in the volcanic reservoirs of Xushen Gasfield, the encroached water results in the further decrease of the gas productivity of the gas wells, thus the rapid and accu- rate identification and prediction of the water influx are very important for making reasonable development strategy. Taking Block D of Xushen Gasfield as an example, a set of identifying and identifying methods for the water influx rate is established. Firstly, by means of the combination of static conditions and dynamic performances, the influx can be judged whether or not ; secondly, through the two methods of positive and negative thoughts, the water influx rate of this block is calculated, and then by the introduced relations between the virtual pressure and cumulative gas production, the reliability of the calculated results of the above two methods is testified. Finally, the functional re- lations between the water influx rate and cumulative gas production are established and the quick prediction of the influx rate is also realized on the bases of the calculated water influx rate in different stages. The results show that this set of composite methods can not only reliably identify the water influx rate, but also precisely calculate and quickly predict the influx rate, thus they can be used for the water influx identification and prediction for the other blocks of Xushen Gasfield.

关 键 词：徐深气田 火山岩气藏 水侵识别 水侵量计算 预测 

分 类 号：TE332[石油与天然气工程—油气田开发工程]