Abstract: Coring service is facing the challenge for high quality, large size and large quantity owing to oil and gas exploration and development of deeper and more complicated reservoirs. Conventional coring tools are more and more difficult to meet the demand. Currently, coring technology is mainly focused on coring while drilling, sidewall coring and sponge liner coring etc. Different technologies have their own advantages and disadvantages. This paper elaborates the current conditions of domestic coring technology, such as conventional coring, coring while drilling, pressure-preservation coring and sidewall coring, and the main achievements foreign countries have made in coring technology in recent years. Based on the related technological indexes and application results, it summarizes the development in this area both at home and abroad. So long as the present conditions of China’s coring technology, the domestic research on coring equipment should be focused on rigidness of materials, methods for device seal, bearing capacity of temperature and pressure sensors and demand for core analysis. It is necessary to develop high-end tools and key technology to promote China’s coring technological development.

Key words: drilling, conventional coring, coring while drilling, pressure- preservation coring, sidewall coring, sponge liner coring

摘要： 随着油气勘探开发向更深更复杂储层推进，取心作业面临着获取高质量、大尺寸、多数量岩心的挑战，常规取心工具越来越难以满足需求。目前人们注意较多的钻井取心技术主要是随钻取心、井壁取心和海绵衬管取心等，不同技术各具优势和缺陷。详细介绍了国内常规取心、随钻取心、保压取心、井壁取心的技术现状和国外近几年在钻井取心技术方面取得的主要进展；结合相应的技术指标和应用效果，对国内外总体发展情况进行了概括；针对我国取心技术现状，国内在取心装置的研发过程中应重点关注硬件材料选择、装置密封方式、温度和压力传感器的承受度及岩心分析需求等方面，着力开发高端工具，掌控核心技术，以更好地促进和推动我国钻井取心技术发展。

关键词: 钻井, 常规取心, 随钻取心, 保压取心, 井壁取心, 海绵衬管取心