石油钻采工艺Issue(1)：96-98,3.DOI:10.13639/j.odpt.2015.01.024
白云凹陷深水区井壁稳定性研究及应用
Research and application of deepwater wellbore stabilization in Baiyun Depression
摘要
Abstract
Baiyun Depression is an important growth point of reserve in Pearl River Mouth Basin. However, due to the narrow lfuid density vessel for safe deepwater drilling and high drilling risk, to accurately assess the regularity and characteristics of deepwater well-bore stabilization in Baiyun Depression is essential the further development of Baiyun Depression. Considering the drilling condition and geological characteristics of the deepwater drilling in Baiyun Depression, the paper studies the formation pressure system features and concludes that the power law model and the Eaton model can provide formation density and pore pressure with higher precision and further reveal how the formation pressure system varies with the water depth, in which the crustal pressure and the bursting pressure are signiifcantly affected by water depth. The calculated formation pressure can be used to assess the lfuid density vessel for safe deepwater drilling in Baiyun Depression and the results show that there is low risk of hole collapse but high risk of losses, especially sandstone permeability loss. The research results provide an important basis for the design of deepwater drilling lfuid in Baiyun Depression.关键词
白云凹陷/深水/井壁稳定/地层压力体系/坍塌压力/破裂压力Key words
Baiyun Depression/deepwater/wellbore stabilization/formation pressure system/caving pressure/fracture pressure分类
能源科技引用本文复制引用
田峥,田波,陈子剑,邓金根,郝希宁..白云凹陷深水区井壁稳定性研究及应用[J].石油钻采工艺,2015,(1):96-98,3.基金项目
“十二五”国家科技重大专项“南海北部陆坡（荔湾3-1及周边）深水油气田钻采风险评估及采气关键技术研究”（编号2011ZX05056-001-03）；国家自然科学基金“海洋深水浅层钻井关键技术基础理论研究”（编号51434009）。 （）
