The predictions by drilling-related mechanical and geological models are in some degree inaccurate due to non-unique solution of seismic velocity model. To address this problem, a new drilling technology guided by well-seismic information integration is proposed which consists of seismic velocity update of drilled formations, seismic velocity prediction of the formation ahead of drilling bit, and the prediction of geological feature and drilling geological environmental factors ahead of bit. In this technology, real information (velocity, formation and depth) behind the drilling bit and local pre-stack seismic data around the wellbore being drilled are used to correct the primitive seismic velocity field for a re-migration of seismic data and to update geological features and drilling geological environmental factors ahead of the drilling bit. Field application shows that this technology can describe and predict the geological features, drilling geological environmental factors and complex drilling problems ahead of the bit timely and improve the prediction efficiency and accuracy greatly. These new updated results are able to provide scientific basis for optimizing drilling decisions.

由于地震速度模型的非唯一解，与钻井有关的力学和地质模型的预测在某种程度上是不准确的。针对这一问题，提出了一种以井震信息集成为指导的新型钻井技术，该技术包括更新钻井地层的地震速度，预测钻头前方地层的地震速度，预测地质特征和钻井地质环境因素。领先。在这项技术中，钻头后面的真实信息（速度，地层和深度）以及正在钻探的井筒周围的局部叠前地震数据被用来校正原始地震速度场，以重新迁移地震数据并更新地质信息。钻头之前的特征和钻探地质环境因素。现场应用表明，该技术可以及时地描述和预测地质特征，钻井地质环境因素和复杂的钻井问题，大大提高了预测效率和准确性。这些新的更新结果能够为优化钻井决策提供科学依据。