CAJ | 학술논문

随着越来越多的深层气藏被发现,其埋藏深、地温梯度高和产出地层水的问题,已经影响到气藏开发中后期甚至开发初期气井的正常生产,降低了气藏最终采收率.针对该类气藏特点,对温度造成泡排剂性能变化作了初步的研究和探讨,从温度对泡沫稳定性、表面活性剂的起泡性、表面活性剂胶团聚集数的影响三个方面阐述了温度对泡排剂性能的影响;指出温度对泡排剂的影响主要表现在对主要成分表面活性剂的起泡性能、稳泡性能以及分子结构三个方面;提出了高温下具有优良性能的泡排剂要选择热力学稳定性好的、亲水基团尽量位于分子链的中段、分子量不宜过大而且具有低表面张力的离子型表面活性剂的认识;进而研制了在高温条件下适用的泡沫排水剂--KFSY.实验结果验证了该泡沫排水剂在高温条件下的良好起泡和稳泡性能.
수착월래월다적심층기장피발현,기매장심、지온제도고화산출지층수적문제,이경영향도기장개발중후기심지개발초기기정적정상생산,강저료기장최종채수솔.침대해류기장특점,대온도조성포배제성능변화작료초보적연구화탐토,종온도대포말은정성、표면활성제적기포성、표면활성제효단취집수적영향삼개방면천술료온도대포배제성능적영향;지출온도대포배제적영향주요표현재대주요성분표면활성제적기포성능、은포성능이급분자결구삼개방면;제출료고온하구유우량성능적포배제요선택열역학은정성호적、친수기단진량위우분자련적중단、분자량불의과대이차구유저표면장력적리자형표면활성제적인식;진이연제료재고온조건하괄용적포말배수제--KFSY.실험결과험증료해포말배수제재고온조건하적량호기포화은포성능.
With the discovery of deeper gas reservoirs, influential factors such as deeply buried depth, high geothermal gra-dient, and formation water yield have greatly affected the normal production of gas wells during the intermediary and later stage, even at the early stage of gas reservoir development. All these effects have greatly reduced the ultimate recovery factor. According to the characteristics of this type of reservoir, effects of temperature on the performance of drainage agent were pres-ented in aspects of foam stability, surfactant foamability and surfactant micelle aggregation. It is found that temperature mainly influences foamability, stability and the molecular structure of the main surfactant. It is pointed out that good foam drainage a-gent under high temperature is ionic surfactant with good thermodynamic stability, low superficial tension, hydrophilic radical in the middle of molecule chain as far as possible and molecular weight not too high. A new foam drainage agent, KFSY, which is suitable to high temperature, has been developed and experimental results have also proved that KFSY has good foamablity and stability under high temperature.