内波流对井口吸入模块稳定性的影响研究  

Influences of Internal Wave Current on Stability of Wellhead Suction Module

作　　者：秦如雷[1] 冯起赠[1] 陈浩文[1] 许本冲[1] 李昌平[2] 卢秋平 王嘉瑞[1] Qin Rulei;Feng Qizeng;Chen Haowen;Xu Benchong;Li Changping;Lu Qiuping;Wang Jiarui(Institute of Exploration Technology,Chinese Academy of Geological Sciences;School of Mechanical Engineering and Electronic Information,China University of Geosciences;Guangzhou Marine Geological Survey)

机构地区：[1]中国地质科学院勘探技术研究所 [2]中国地质大学(武汉)机械与电子信息学院 [3]广州海洋地质调查局

出　　处：《石油机械》2023年第6期43-49,共7页China Petroleum Machinery

基　　金：国家重点研发计划项目“深海无隔水管钻井液回收循环钻井技术装备研发”(2021YFC2800802/2021YFC2800803);工业和信息化部高技术船舶项目“天然气水合物钻采船(大洋钻探船)总装建造关键技术研究”(CJ05N20);中国地质调查局地质调查项目“深海钻探工程关键技术支撑”(DD20221721)。

摘　　要：为研究内波流对井口吸入模块稳定性的影响,建立了井口吸入模块分析模型,采用p-y曲线法对土壤条件进行弹簧等效模拟,通过Morison方程计算海底内波流载荷,利用仿真分析软件ABAQUS分析了海况重现期、井口吸入模块材质和土壤类型对井口吸入模块稳定性的影响,并分析了极限工况下井口吸入模块的稳定性。研究结果表明:海况重现期是影响井口吸入模块稳定性的主要因素,井口吸入模块的稳定性随海况重现期的增大而降低,井口吸入模块前6阶固有频率随着材质弹性模量的减小而降低,随着土壤硬度的减小而降低。研究结果可为无隔水管钻井液闭式循环钻井技术的应用提供参考。In order to study the influences of internal wave current on the stability of the wellhead suction module,an analysis model of wellhead suction module was established.The p-y curve method was used to perform the spring equivalent simulation of soil conditions,and the wave current load in the seabed was calculated using the Morison equation.The simulation analysis software ABAQUS was adopted to analyze the influences of the recurrence period,wellhead suction module material and soil type on the stability of the wellhead suction module.The stability of the wellhead suction module under extreme conditions was analyzed.The results show that the recurrence period is the main factor affecting the stability of the wellhead suction module.The stability of the wellhead suction module decreases with the increasing recurrence period.The first six natural frequencies of the wellhead suction module decrease with the decline of the material elastic modulus and the decrease of soil hardness.The research findings provide references for the application of the riserless mud recovery(RMR)drilling technology.

关 键 词：深水钻井 吸入模块 RMR技术 模态分析 仿真分析 海况重现期 

分 类 号：TE52[石油与天然气工程—油气田开发工程]