摘要
水平井地质导向技术首先建立钻前地质导向模型,并根据评价井的测井资料,对随钻测井(LWD)曲线及可能钻遇的地层岩性进行预测。钻井过程中,在钻前地质导向模型基础上,根据钻井时LWD不同的测井响应和综合录井资料,实时验证构造和储集层信息,不断修正地质导向模型,对靶点深度进行实时预测,及时调整靶点,实现水平井的钻井目的。水平井导向包括2个关键步骤:水平井着陆的导向和水平段钻进过程中的导向。曹妃甸11-1油田开发大量采用了水平井,在水平井钻井过程中,根据目的层油藏类型和不同构造、储集层特征,确定了相应的水平井着陆和水平段钻进的导向原则,保证了水平井精确中靶并使水平段最大限度地穿越储集层,与传统导向技术相比,大幅度提高了水平井钻井成功率。
In the geo-steering technology, a reservoir navigation model is built, with which the anticipated formation lithology and LWD logging are simulated based on the appraisal wells data. While drilling, the modeled structure and reservoir are validated constantly from the real-time LWD and the compound logging. The model is updated repeatedly according to the penetrated information. The target depth is diagnosed and the target data is adjusted accordingly to make sure the horizontal well successful; The technology has two key steps： geo-steering to land the horizontal well and reservoir navigation to the horizontal section. Horizontal wells are applied in the development practice of the Caofeidianl 1-1 Oilfield. Different geo-steering rules are made for landing and horizontal section drilling based on different reservoir type, structure and container rock characteristics. They provide a powerful guarantee for perforating reservoirs and increase the success ratio of horizontal well drilling in comparison with the conventional technology.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2006年第3期378-382,共5页
Petroleum Exploration and Development
基金
中国海洋石油有限公司锦州9-3东区调整方案(2005ODP-006)
关键词
水平井
LWD
地质导向
油藏导航
horizontal wells
LWD logging
geo-steering
reservoir navigation
