临兴区块非常规气田泡沫排水提高采收率技术

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引用格式：，等. 临兴区块非常规气田泡沫排水提高采收率技术[J]. 当代化工，2026, 55（4）：783-788.

DU Jia, ZHANG Bing, MI Honggang, et al. Foam Drainage EOR Technology for Unconventional Gas Field in Linxing Block[J]. Contemporary Chemical Industry, 2026, 55(4): 783-788.

中图分类号：TE377；TQ423

文献标志码：A

文章编号：1671-0460（2026）04-0783-06

Foam Drainage EOR Technology for Unconventional Gas Field in Linxing Block

DU Jia, ZHANG Bing, MI Honggang, SU Yu

(China United Coalbed Methane Co., Ltd., Beijing , China)

Abstract: In order to improve the development efficiency of unconventional natural gas resources, taking the unconventional gas field in Linxing block as the research object, based on the analysis of the basic overview of the target gas field reservoir lithology, physical properties and development status, the foam drainage technology suitable for the unconventional gas field gas wells in Linxing block was studied, the comprehensive performance of the new foam drainage agent was evaluated, and its field application effect was analyzed. The results showed that the physical properties of the reservoir section in Linxing block were poor, belonging to a typical ultra-low porosity and ultra-low permeability sandstone reservoir, and the development of the gas reservoir was difficult. The gas production of some gas wells in the target block was significantly reduced after bottom hole liquid accumulation. Foam drainage gas production is a common measure to continue to improve the recovery of such gas wells. The foaming performance, salt resistance, and temperature resistance of the new foaming agent are relatively good. It was recommended that the optimal mass fraction for on-site application should be 0.30%. On the basis of bottom hole liquid accumulation diagnosis, continuous foam drainage optimization design and injection agent amount optimization for gas wells in the target block, field application tests of foam drainage gas production were carried out. The results showed that the gas production of L-2 and L-3 wells was relatively stable after taking foam drainage gas production measures, the casing pressure difference was reduced, and the field application effect was good.

Keywords: Unconventional gas fields; Ultra-low permeability reservoir; Improving recovery rate; Foam drainage gas production; Application effect; Natural gas; Surface active agent

我国的天然气资源储量十分丰富 [1-3] ，据有关统计数据，截至2023年末，我国天然气剩余技术可采储量为66 834.7亿 m3 ，此外2023年我国天然气勘查新增探明地质储量为9 812.0亿 m3 ，其中新增探明技术可采储量为4 155.2亿 m3 。（剩余10367字）