摘要
针对目前致密含水气藏产液评价方法单一、实用性差的问题,在气井产气、产液特征研究基础上,对产液进行静态、动态评价分类,并以此为基础,建立了致密含水气藏产液评价模型。针对模型中不同类型气井,制订了相应的排水采气思路和建议。将研究成果应用于大牛地气田D28井区,实施一个月后,目标区块日产气量由82.5×10~4m^3/d提高至86.6×10~4m^3/d,日产液量由412 m^3/d提高至447 m^3/d,气井生产时率由84.1%提高至87.3%。与现有评价方法相比,新模型可以同时描述气井产液静态特征和产液动态变化趋势,为致密含水气藏气井的精细分类和准确处理提供理论依据,具有现场应用价值。
The current liquid production evaluation with poor practicability is too simple to be used in tight water- hearing gas reservoir. Based on the gas and liquid production performances, the static and dynamie evaluations of liquid production are classified to establish a liquid production evaluation model ior tight water-hearing gas reservoir. The specific ideas and suggestions of gas recovery by water drainage are formulated for different gas well classi- fications. The research is applied to Wellblock D28 in Daniudi Gasfield. After a month, the fiehl daily gas prtuluetion is increased form 82. 5 × 10 4m3/d to 86.6× 104 m3/d, the field daily liquid production is enhanced from 412 m3/d to 447 m3/d and the gas-well production efficiency is improved from 84. I% to 87.3%. Comparing with the current evaluation methods, this new evaluation model can simultaneously characterize the static performance and dynamic liquid production trend. It could p,＇ovide a theoretical referenee for the fine classification and management of gas ,sells in tight watt,r-bearing gas reservoirs and it is also worth nf on-site application.
出处
《特种油气藏》
CAS
CSCD
北大核心
2018年第1期90-94,共5页
Special Oil & Gas Reservoirs
基金
国家科技重大专项"大型油气田及煤层气开发"(2016ZX05050010)
关键词
致密气藏
含水气藏
产液
评价模型
大牛地气田
tight gas reservoir
water-hearing gas reservoir
liquid production
evaluation model
Daniadi Gasfield
