一个改进的适合X气田的临界出砂压差计算模型  

An improved model for determining the critical sand production pressure difference in X gasfield

作　　者：胥元刚[1] 龚迪光[1] 董小卫[1] 蔡文斌[1] 何艳[2] 姬江[3] 

机构地区：[1]西安石油大学石油工程学院,陕西西安710065 [2]青海油田天然气开发公司开发地质研究所,青海格尔木816000 [3]西安石油大学地球科学与工程学院,陕西西安710065

出　　处：《西安石油大学学报（自然科学版）》2012年第5期63-66,10,共4页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：西安石油大学研究生创新基金项目(编号:YS37030518)

摘　　要：通过控制X气田生产压差主动防砂可以达到有效防砂的目的,但技术人员仍没有合适的临界出砂压差计算模型.优选"M-C模型"作为基础模型,考虑影响X气田出砂的3种因素并结合现场实验测试数据对"M-C模型"进行了修正,建立了考虑泥质含量和含水饱和度的临界出砂压差计算新模型.对现场10口气井验算表明,计算精度提高了13.9%.The reservoir lithology in X gas field is mainly argillaceous siltstone and the reservoir is unconsolidated,which easily leads to the formation sand production.Controlling production pressure difference is an effective sand control measures.'M-C model' being selected as a base model,it is modified by considering three sand production factors of X gas field and field test data,and a critical sand production pressure difference model suitable for X gas field is obtained,in which the clay content and water saturation are included.The calculation results of 10 wells show that the calculation accuracy of the modified M-C method is higher 13.9% than that of D-P method.

关 键 词：气井 疏松砂岩 临界出砂压差 改进M—C模型 

分 类 号：TE377[石油与天然气工程—油气田开发工程]