东营地区地热回灌井钻井完井技术研究与试验

Research and Test of the Drilling and Completion Technologies for Geothermal Reinjection Wells in Dongying Area

李成嵩 王银生

LI Chengsong WANG Yinsheng

中国石化新星石油有限责任公司，北京 100083 中石化新星山东新能源有限公司，山东东营 257100

Sinopec Star Petroleum Co., Ltd., Beijing, 100083, China Sinopec Star Shandong New Energy Co., Ltd., Dongying, Shandong, 257100, China

为了解决砂岩热储地热水回灌难题，确保地热资源的持续开发利用，开展了胜利油田东营地区地热回灌井钻井完井技术研究。在分析热储层地质特点及回灌井钻井完井技术难点的基础上，将油田油气井的钻井和射孔完井工艺应用到地热回灌井中，进行了钻具组合、钻井液和完井技术研究，形成了地热回灌井钻井完井技术，并在探灌1井进行了现场试验。结果表明，探灌1井热储层位于沾化凹陷馆陶组，试水温度68 ℃，试水水量90～105 m3/h，回灌量90～105 m3/h，实现了完全回灌。东营地区地热回灌井钻井完井技术解决了砂岩地热水回灌技术难题，保障了该地区地热能产业的健康发展，具有较好的推广应用价值。

For geothermal water reinjection in sandstone thermal storage, the drilling and completion technologies for geothermal reinjection wells in Dongying Area of Shengli Oilfield were studied to ensure the sustainable development and utilization of geothermal resources. Based on the analysis of the geological characteristics of the thermal reservoir and the technical difficulties in drilling and completion of reinjection wells, drilling and perforation completion technologies were applied to a geothermal reinjection well. The technical research on BHA(bottomhole assembly), drilling fluid system and completion technology was carried out. The drilling and completion technologies for the geothermal reinjection wells was formed and successfully tested in the field. The field test showed that the layer of thermal reservoir of Well Tanguan 1 was located in the Guantao Formation in the Zhanhua Sag. The water temperature was 68 ℃, and the water volume was 90–105 m3/h with a reinjection volume of 90–105 m3/h, which achieved complete reinjection. The technologies have solved the technical problem in geothermal water reinjection in sandstone thermal storage, ensuring the healthy development of the geothermal energy industry in this area, thus possess the potential for widespread populariazation and application.

中国石化集团科技攻关项目“地热井关键技术研究”（编号：JP13003）部分研究内容

https://doi.org/10.11911/syztjs.2021130