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朝阳沟油田葡萄花油层开发20年来均采用直井开发,区块平均单井日产油量低,采油速度和储量动用程度较低。目前水平井开发技术已经成熟,为葡萄花油层水平井开发提供了钻井支持;现在原油价格居高不下,为水平井的开发提供经济基础;葡萄花油层为滨湖浅水相,发育葡Ⅰ1、葡Ⅰ2层两个小层,且葡Ⅰ2层砂岩发育稳定,为水平井部署提供了有利的地质基础;A区块已钻扶余油层井,为该区的葡萄花油层PETRO软件建立构造模型和储层模型提供了准确的单井数据,为水平井轨迹的准确设计也奠定了数据基础。同时由于葡萄花油层砂岩较薄,直井开发其储量的动用程度和采油速度较低,水平井注采开发方式能够提高区块的储量动用程度和采油速度。
The development of Putaohua oil layer in Chaoyanggou Oilfield has been developed with straight wells for 20 years. The average daily production volume of single well in the block is low, and the utilization rate of oil recovery and reserves is relatively low. At present, horizontal well development technology is mature, which provides drilling support for the development of horizontal wells in Putaohua formation. Now the high crude oil price provides the economic basis for the development of horizontal wells. The Putaohua reservoir is a shallow lake facies with the development of Portuguese Ⅰ, Portuguese Ⅰ 2 layers and two layers of small sandstone, and the stable development of sand layer Ⅰ-2 in Pu provided a favorable geological basis for the deployment of horizontal wells. In Block A, oil-extended well was drilled to establish structural models and reservoirs for PETRO software of Putaohua reservoir in this area The model provides accurate single-well data and lays the data foundation for accurate design of horizontal well trajectories. At the same time, due to the thin sandstone in Putaohua reservoir, the exploitation rate and oil recovery rate of vertical well development are low, and the horizontal well injection and development mode can increase reserves utilization rate and oil recovery rate.