靖边气藏开发特征及中后期稳产技术对策研究

靖边气藏为定容无边（底）水气藏，但储层中存在相对富水区，其存在及演化受多种因素的制约，必然也会对生产井的产状产生不利的影响。靖边气田生产井具有产量低，递减快，部分井有地层水产出，且不同区域的生产井产水量差异大的开发特征。通过对出水气井生产特点进行分类，研究了靖边气藏相对富水区的分布、成因及对生产井产状的影响，分析生产井产水对气田开发的影响程度；利用数值模拟研究了靖边气田的合理采气规模，稳产技术对策，认为通过井网调整、确定不同类型生产井的合理工作制度可有效预防气井高产水，实现目前开发规划要求，同时达到最佳的开发效果。通过研究提出了合理的生产规模和稳产技术对策，对靖边气田的开发具有一定的参考作用。

STUDY ON JINGBIAN GAS RESERVOIR PRODUCTION CHARACTERISTICS AND TECHNICAL COUNTER-MEASURES FOR DEPLETION DURING MIDDLE AND LATE DEVELOPING PHASE

Jingbian gas reservoir is a reservoir with fixed volume and no side or bottom water. In the formation there exists relatively rich water zone that is subjected to influence of many factors and has negative effects on gas well production. In Jingbian Gasfield, the characteristic of the production well is low yield, fast depletion, and formation water produced on certain wells and varying significantly in quantity in different regions. By classifying the characteristics of water producing wells, this paper studies rich water zone distribution, formation and its impact on production wells and the effects on gas field development because of water production. Also, this paper studies the reasonable production scale and the technologies to keeping this scale in Jingbian gas field through the reservoir simulation. It states that not only high formation water production can be avoided and current development program can be realized by adjusting well pattern and developing proper production program suitable for production wells of various types but also optimum production yields can be obtained. Based on the studies, this paper recommends the reasonable production scale and technologies for steady production, which may be applied in the exploitation of Jingbian Gasfield.