渤海某油田调整水平井着陆垂深误差分析

Error Analysis of Vertical Depth in Adjustment Horizontal Well in Bohai Oilfield

朱培 史富全

ZHU Pei SHI Fuquan

中海油能源发展股份有限公司工程技术分公司, 天津 300452

CNOOC EnerTech-Drilling & Production Co., Tianjin 300452, China

随着钻完井技术的不断进步和地质油藏的开发需要，水平井在渤海油田应用越来越广。在底水、边水发育的油藏中布置水平井作业，重点在于水平井着陆段的钻进，即找油过程。油层的加深或变浅不仅影响地质油藏油水界面等的研究决策，而且影响水平井着陆的正常钻进和工期费用。水平井着陆深度预测精度主要为地质因素和钻井因素，此文从钻井工程系统误差入手，分析着陆误差产生的原因，并提出应对措施，以期对后续调整井深度预测提供依据。

With the continuous improvement of drilling and completion technology and the requirement for development of geological reservoirs, horizontal wells are widely used in Bohai oilfield. When drilling horizontal wells in reservoirs with bottom water and edge water, the key is the drilling of landing section in horizontal well, that is, the key is the process to find oil. The deepening or shallowing of reservoir not only affects the research decision of oil-water interface in geological reservoir, but also affects the normal drilling and cost of landing time of horizontal well. The prediction accuracy of horizontal well landing depth is mainly geological factors and drilling factors. In this paper, starting from the error of drilling engineering system, the cause of landing error has been analyzed, and the measures to decrease landing error have been put forward, which can provide the basis for the prediction of the depth of the subsequent adjustment wells.

https://doi.org/10.3969/j.issn.1008-2336.2018.02.083