辽河油田沙一到馆陶含油砂层大多埋藏较浅 ,油层呈油砂状 ,有的还含有不等径砾石。常规取心工具取心时 ,因岩心极易冲蚀致使取心收获率大多在 30 %～ 5 0 %之间。针对这一问题 ,对原有取心工具进行了认真分析 ,研制出新型松散地层取心工具 ,并在实践中获得成功 ,将同类地层的取心收获率提高到 80 %以上。对于提高辽河油田取心质量起到了重要作用。 Liaohe Oilfield sand to Guantao oil-bearing sand mostly shallow buried, the oil-sand-like reservoir, and some also contain unequal-diameter gravel. Conventional coring tools coring, corroded due to core erosion easily lead to corneal recovery rate mostly between 30% ~ 50%. In response to this problem, the original coring tools were carefully analyzed and a new loose coring tool was developed. In practice, the coring tool was successful and the coring rate of similar formations was raised to more than 80%. It has played an important role in improving the coring quality of Liaohe Oilfield.