石油钻采工艺2016，Vol.38Issue(6)：766-770,5.DOI:10.13639/j.odpt.2016.06.010
莺-琼盆地高温高压区域浅层气钻井风险评估与防治
Shallow gas well drilling risk assessment and prevention in the Yingqiong Basin area of high temperature and high pressure
摘要
Abstract
The key link of well control safety technology for offshore HTHP (high temperature and high pressure) well drilling is to evaluate the geological risks of shallow gas reservoirs accurately and prepare control measures rationally. In this paper, the mathematical model on P-wave velocity of shallow sediments in the Yingqiong Basin based on dual-parameter (i.e. porosity and density) of shallow strata was established according to the principle that shallow gas responds to the seismic velocity differently. Then, based on the shallow seismic and logging data of some existing wells in the Yingqiong Basin, the P-wave velocity tendency curve of shallow strata in this basin was plotted, and its four risk levels (blue, yellow, orange and red) were predicted. And finally, drilling risk evaluation chart of shal-low gas reservoirs in the Yingqiong Basin was prepared and the corresponding risk control programs were formulated. When this chart was actually applied in the Yingqiong Basin, the evaluation accuracy was over 90%. And it is indicated that this chart is better suitable for the Yingqiong Basin.关键词
浅层气/风险评估/纵波速度/预测Key words
shallow gas/risk evaluation/P-wave velocity/prediction分类
能源科技引用本文复制引用
张百灵,杨进,王磊,邸鹏伟,赵彦琦..莺-琼盆地高温高压区域浅层气钻井风险评估与防治[J].石油钻采工艺,2016,38(6):766-770,5.基金项目
国家重大专项“浅层地质灾害识别与风险评价技术研究”（编号2016ZX05033004-006）；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）。 （）
