化学增效热洗井技术在渤海SZ36-1油田的研究与应用

Study and Application of Chemical Synergy Thermal Well-Washing Technology to SZ36-1 Oilfield in Bohai Sea

高永华 白健华 司念亭 任大明 宿辉 吴子南

GAO Yonghua BAI Jianhua SI Nianting REN Darning SU Hui WU Zinan

中海石油(中国)有限公司天津分公司, 天津 300452; 中国海洋石油渤海公司环保技术服务分公司 天津 300452; 中海油田服务股份有限公甸, 天津 300452

Tianjin Branch, CNOOC Lid., Tianjin 300452, China; CNOOC Bohai Environmental Technology Co., Tianjin 300452, China; China Oilfield Services Limited, Tianjin 300452, China

渤海SZ36-1油田原油属重质稠油, 具有密度高、黏度大、胶质沥青质含量高的特点, 在传统的热洗井中单独采用大量地热水长时间清洗井筒的工艺, 往往会造成资源浪费、污染地层。为此推出了一套化学增效热洗井技术, 经过实验室研究及在海上平台现场的大量应用, 取得了良好的效果, 达到了缩短作业时间和油井恢复周期并且增产的目的。这也为其它稠油油田的洗井、清蜡作业提供了借鉴。

Bohai SZ36-1 oilfield is viscous oilfield, with high density, high viscosity, high content of colloid and asphaltene. With traditional thermal well washing technology individually, a large number of geothermal water should be used for a long time to clean the wellbore, resulting in waste of resources and pollution of formation. Therefore, the chemical synergy thermal well-washing technology is put forward. Through laboratory research and numerous applications on offshore platforms, good results have been achieved, reducing the operation time and oil recovery cycle, and increasing oil production. This method can also be used for well flushing and paraffin removal in other viscous oilfield.

https://doi.org/10.3969/j.issn.l008-2336.2013.04.046