致密气排水采气工艺优选模型构建及经济评价方法研究
Constructing an optimal model on drainage gas recovery in tight gas and economic evaluation
张晟源 1汪洋 1徐艳霞 1任洪明 1罗钧 1刘建1
作者信息
- 1. 中国石油西南油气田公司川东北气矿,四川 达州 635000
- 折叠
摘要
排水采气工艺作为提高致密气水平井产量和稳定性的主要手段,已经在各致密气区块广泛应用.为了提升致密气资源开发的效率和经济效益,采用了一种综合排水采气工艺优选方法,在技术可行性基础上兼顾了经济适用性.通过对优选管柱、泡排、气举和柱塞四种排水采气工艺的适用性进行验证和详细分析,运用模糊数学理论和层次分析法建立了综合评价模型.研究结果表明:①工艺的灵活性、地面流程的复杂性、管理难度和免修期期限作为管理指标具有可行性;②系统化的评价方法考虑了工艺技术和经济性等因素;③选取的五宝浅X1井是一个典型的致密气井,面临带液生产困难的问题,通过综合评价模型,对X1井的泡排、优选管柱工艺、气举和柱塞工艺进行了经济效益分析,泡排工艺的经济效益和管理方面综合效用值0.92,适合X1井的生产需求.结论认为,该研究成果对提高致密气资源开发的效率和效益具有较大意义,为致密气田的开发管理提供了有力支持.
Abstract
Drainage gas recovery,as an elemental process to improve both production and stability of tight gas in horizon-tal wells,is extensively used in various tight gas blocks.Thus,taking both technology and economy into consideration,an optimal and comprehensive approach was adopted for drainage gas recovery in order to improve development efficiency and economic benefits in tight gas resources.Four processes of drainage gas recovery(optimized string,foam,air lift and plung-er)were verified and discussed in term of their applicability.In addition,a synthetic evaluation model was constructed by means of fuzzy mathematics theory and analytical hierarchy process.Results show that(i)it is feasible to take process flexi-bility,ground flow complexity,management difficulty and maintenance-free period as management indexes;(ii)the evalua-tion method should ponder on technical and economic factors fully;(iii)for Wubaoqian X1 well as a classic tight gas well confronted with difficulty in the production with liquid,the economic benefits are individually analyzed for the four process-es.As a result,the integrated available value of both economic benefits and management is 0.92 through foam drainage gas recovery which is available for X 1 well.In conclusion,all results are is greatly significant for improving the development efficiency and benefits in tight gas resources,and provide powerful support for the development management of such fields.
关键词
致密气/排水采气/工艺优选/层次分析法/综合评价Key words
Tight gas/Drainage gas recovery/Process optimization/Analytical hierarchy process/Synthetic evaluation引用本文复制引用
基金项目
中国石油西南油气田分公司川东北气矿科技项目(202302-02)
出版年
2024
NETL
NSTL
万方数据