致密气藏积液气井钢丝提捞排水采气技术应用
Application of steel-wire lift drainage gas production technology in gas wells with fluid accumulation in tight gas reservoir
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- 引用格式:
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杨巧云,张鹏.致密气藏积液气井钢丝提捞排水采气技术应用[J].天然气与石油,2026,44(3):78-86.doi:10.3969/j.issn.1006-5539.2026.03.010
Yang Qiaoyun, Zhang Peng.Application of steel-wire lift drainage gas production technology in gas wells with fluid accumulation in tight gas reservoir[J].Natural Gas and Oil,2026,44(3):78-86.doi:10.3969/j.issn.1006-5539.2026.03.010
- DOI:
- 10.3969/j.issn.1006-5539.2026.03.010
- 作者:
- 杨巧云1 张鹏2
Yang Qiaoyun1, Zhang Peng2
- 作者单位:
- 1. 西安长庆同欣石油科技有限公司, 陕西 西安 710018; 2. 中国石油长庆油田分公司第一采气厂, 陕西 西安 710021
1. Xi'an Changqing Tongxin Petroleum Technology Co., Ltd., Xi'an, Shaanxi, 710018, China; 2. The No.1 Gas Production Plant, PetroChina Changqing Oilfield Company, Xi'an, Shaanxi, 710021, China
- 关键词:
- 积液气井;钢丝提捞;现场应用;神木气田
Gas wells with fluid accumulation; Steel-wire lift; Field application; Shenmu gas field
- 摘要:
- 神木气田属典型的“低压、低渗、低丰度”的致密气藏,气井普遍低压、低产,且井筒易积液,随着气田开发程度不断加深,地层能量持续下降,产量、压力无法满足气井自主携液要求,气井积液减产乃至停产的现象越来越明显,严重影响了气田的连续稳定生产。排水采气作为解决气井出水、保障气田稳产的主体技术,正面临着一系列严峻挑战,现场不适应性问题逐渐突出,特别是严重积液气井措施有效率低、复产成功率低已成为亟须解决的难题。针对神木气田生产情况和排水采气现状,研究分析了钢丝提捞排水采气技术的原理和特点,并针对氮气气举复产失败、严重积液停产和常规措施无效等三类气井开展了针对性的现场应用实践,20口气井均复产成功,措施有效率90%,累计排出井筒积液115 m3,单井平均增产天然气0.5×104 m3/d,累计增产天然气396×104 m3,投入产出比1∶5,整体实施效果良好,经济效益明显。研究结果表明，钢丝提捞排水采气技术借助外力辅助排液复产,排液效果高效,现场应用成效显著,大大提高了复产成功率和措施有效率,有效支撑了神木气田积液气井排液复产。钢丝提捞排水采气技术可为类似气田的排水采气提供借鉴和参考。
The Shenmu gas field is a typical tight gas reservoir characterized by low pressure, low permeability, and low productivity. Gas wells generally exhibit low pressure and low production rates, with wellbores prone to liquid accumulation. As field development progresses, continuous decline in formation energy results in production rates and pressures insufficient to meet the critical liquid-loading velocity, leading to increasingly severe issues of production decline and well shut-in due to liquid accumulation, which significantly affects continuous and stable field production. Drainage gas recovery, as the primary technology to address liquid production and ensure stable gas field output, faces a series of severe challenges. Field applicability issues have become increasingly prominent, particularly the low effectiveness and low success rates of interventions for wells with severe liquid accumulation, which have become urgent problems requiring solutions. In response to the production conditions and drainage gas recovery status of the Shenmu gas field, this study analyzes the principles and characteristics of steel-wire lift drainage gas recovery technology and conducts targeted field application trials on three types of gas wells: those with failed nitrogen gas lift operations, those shut in due to severe liquid accumulation, and those where conventional measures proved ineffective. All 20 wells were successfully brought back into production, with a measure effectiveness rate of 90%. A total of 115 m3 of accumulated wellbore liquid was removed, achieving an average gas production increase of 0.5×104 m3/d per well, cumulative incremental gas production of 396×104 m3, and an input-output ratio of 1∶5. Overall implementation results are excellent, with significant economic benefits. The results demonstrate that steel-wire lift drainage gas recovery technology, by utilizing external energy to assist liquid removal and production restoration, achieves highly efficient liquid removal with remarkable field application performance. It significantly improves production restoration success rates and measure effectiveness, providing effective support for liquid removal and production restoration of liquidloaded gas wells in the Shenmu gas field, and offers valuable reference for drainage gas recovery operations in this field.
