新疆石油地质

›› 2015, Vol. 36 ›› Issue (1): 1-1.doi: 10.7657/XJPG20150116

• 论文 •    

苏里格气田东区气井产量递减规律

刘占良1，王琪2，张林1，蒋传杰1，郭海鹏2   

  1. (1.中国石油 长庆油田分公司 第五采气厂,西安 710018;2.山东科技大学 地球科学与工程学院,山东 青岛 266590)
  • 出版日期:2019-01-01 发布日期:1905-07-11

Laws for Gas Well Production Decline in East Area of Sulige Gas Field, Ordos Basin

LIU Zhanliang1, WANG Qi2, ZHANG Lin1, JIANG Chuanjie1, GUO Haipeng2   

  1. (1.No.5 Gas Production Plant, Changqing Oilfield Company, PetroChina, Xian, Shaanxi 710018, China; 2.College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China)
  • Online:2019-01-01 Published:1905-07-11

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摘要： 以苏里格气田东区为例，采用Arps分析方法计算产量递减，详细解释了指数、双曲和调和3种产能递减方式。研究认为，苏里格气田东区低产、低渗、低丰度，气井压降快，稳产期短或无稳产期，Arps分析结果为双曲递减；递减率受初期配产影响大，可通过调整初期配产来控制递减率；研究区2008年投产井平均在2 a后进入递减期，月递减率为1.7%~2.4%；苏里格气田东区Ⅰ类井、Ⅱ类井和Ⅲ类井配产都在合理范围之内，分析方法准确可靠。依据衰竭式递减公式，研究区已投产井的有效开采时间为15~30 a

Abstract: Taking the east area of Sulige gas field in Ordos basin as an example, the Arps decline curves were used to calculate the production decline and explain the processes of exponential, hyperbolic and harmonic decline curves in detail in this area. The studies suggest that the east area of Sulige gas field is characterized by low yield, low permeability, low abundance, rapid decline of pressure drop in gas wells, short or no for stable production period, so its decline belongs to hyperbolic decline; the decline rate is greatly influenced and controlled by initial production allocation; the production wells in 2008 in this area entered into decline period in two years later in average, with month decline rate of 1.7%~2.4%. the proration of ClassⅠ, Ⅱ, Ⅲ wells in this area of Sulige gas field are all in the reasonable ranges, indicating this analytical method is accurate and reliable. According to the formula for depletion decline, the net production time is predicted as 15~30 years for the producing wells in this area

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