地质与勘探

新疆地区不同产水程度煤层气井排采动态与产能特征

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地质与勘探 | 水文•工程•环境 2025,61(2): 407-419

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地质与勘探 | 水文•工程•环境 2025, 61(2): 407-419

新疆地区不同产水程度煤层气井排采动态与产能特征

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陈文圆¹, 葛燕燕¹, 孔庆虎², 杨曙光³, 李鑫¹, 张娜³, 韦波⁴, 王刚³, 王兴刚⁵, 苏红梅⁶

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Drainage performance and productivity characteristics of coalbed methane wells with different water production levels in Xinjiang

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doi: 10.12134/j.dzykt.2025.02.016

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水文地质条件对煤层气的富集和产出具有重要影响。针对新疆地区不同产水程度煤层气井产能差异的问题，利用统计分析和数值模拟等手段，将煤层气井划分为低产水煤层气井、中产水煤层气井和高产水煤层气井三类。将累计排采500天、平均日产水量低于5 m3 的煤层气井，划分为低产水煤层气井。该类井压力下降幅度适中（CS18井压力下降幅度51.56%），压降解吸范围受限，供气面积小。将平均日产水量介于 5~10 m3 的煤层气井划分为中产水煤层气井，该类井压力下降幅度适中（BCS-22井压力下降幅度53.67%），少见产水量过大需要长期排水无法解吸的情况。将平均日产水量高于 10 m3的煤层气井划分为高产水煤层气井，该类井压力下降幅度较小（T1-6 井压力下降幅度 30.42%），排水降压困难。进一步提出了低产水煤层气井“合理控水、适当憋压”、中产水煤层气井 “连续排采、稳水稳压”和高产水煤层气井“低套压、高流压日降幅”的排采建议。该研究可为新疆不同产水程度煤层气井长期高效开发提供依据。

关键词

煤层气 / 储层排采 / 产水量 / 井底流压 / 排采制度 / 新疆

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Hydrogeology exerts a major effect on the enrichment and productivity of coalbed methane (CBM). In view of the productivity difference in CBM wells with different water production levels in Xinjiang, this work conducted statistical analysis and numerical simulation to divide the CBM wells into three types, i. e., low water-producing, medium water-producing and high water-producing CBM wells. Those wells with an average daily water production of < 5 m3 for 500 days were classified as low water-producing wells. This type of wells has a moderate pressure drop (the pressure drop of the well CS18 is 51.56%), a limited range of pressure degradation and absorption, and the gas supply area is small. The CBM wells with an average daily water production of 5~10 m3 are divided into medium water-producing wells. These wells have a moderate pressure drop (the pressure drop of the well BCS-22 is 53.67%), and rarely encounter the situation that the water production is too large to be desorbed by long-term drainage. CBM wells with an average daily water production of more than 10 m3 are classified as high-yield wells. The pressure drop of such wells is small (the pressure drop of wells T1-6 is 30.42%), and the drainage and pressure reduction are difficult. Further suggestions were put forward for the CDM wells, including "reasonable water control and appropriate pressure holding" for low water-producing wells, "continuous production and stable water and pressure" for medium water-producing wells, and "daily decrease in low casing pressure and high flow pressure" for high water-producing wells. This study can provide a basis for the long-term and efficient development of CBM wells with different water production levels in Xinjiang.

Key words

（4）coalbed methane / reservoir drainage / water production / bottomhole flow pressure / drainage system / Xinjinag

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陈文圆, 葛燕燕, 孔庆虎, 杨曙光, 李鑫, 张娜, 韦波, 王刚, 王兴刚, 苏红梅. 新疆地区不同产水程度煤层气井排采动态与产能特征. 地质与勘探, 2025 , 61 (2) : 407 -419 . DOI: 10.12134/j.dzykt.2025.02.016

. Drainage performance and productivity characteristics of coalbed methane wells with different water production levels in Xinjiang[J]. Geology and Exploration, 2025 , 61 (2) : 407 -419 . DOI: 10.12134/j.dzykt.2025.02.016

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2025年第61卷第2期

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doi: 10.12134/j.dzykt.2025.02.016

首发时间：2026-04-29

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https://castjournals.cast.org.cn/joweb/dzykt/CN/10.12134/j.dzykt.2025.02.016

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2种不同金属材料的力学参数

科 Family	属数 Number of genus	种数 Number of species	占总种数比例 Percentage of total species (%)	属 Genus	种数 Number of species	占总种数比例 Percentage of total species (%)
鹅膏菌科Amanitaceae	2	11	5.26	鹅膏菌属 Amanita	10	4.78
小菇科 Mycenaceae	2	12	5.74	丝盖伞属 Inocybe	5	2.39
多孔菌科 Polyporaceae	8	14	6.70	蜡蘑属 Laccaria	5	2.39
红菇科 Russulaceae	3	23	11.00	小皮伞属 Marasmius	6	2.87
				小菇属 Mycena	11	5.26
				光柄菇属 Pluteus	5	2.39
				红菇属 Russula	17	8.13
				栓菌属 Trametes	5	2.39

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