基于压力计阵列的裂缝性漏失层位高效识别方法  

Efficient Identification Method of Fractured Leaky Layers Based on Pressure Gauge Arrays

作　　者：幸雪松 周长所 王雨妹 吴怡 石建 顾继俊[2,3] XING Xuesong;ZHOU Changsuo;WANG Yumei;WU Yi;SHI Jian;GU Jijun(CNOOC Research Institute Ltd,Beijing 100028,China;College of Mechanical and Transportation Engineering,China University of Petroleum(Beijing),Beijing 102249,China;School of Safety and Engineering,Urumqi,Xinjiang 830000,China)

机构地区：[1]中海油研究总院有限责任公司,北京100028 [2]中国石油大学(北京)机械与储运工程学院,北京102249 [3]新疆工程学院安全科学与工程学院,新疆乌鲁木齐830000

出　　处：《测井技术》2025年第1期104-110,共7页Well Logging Technology

基　　金：国家自然科学基金项目“基于共旋坐标法的海洋柔性立管与弹塑性海床接触机理及其扭转失稳研究”(52271299);中海油研究总院有限责任公司重点课题“复杂结构井裂缝型漏失关键参数测量工具加工与测试”(CCL2022RCPS0335KSN)。

摘　　要：随着油气勘探开发向中深层领域推进,每当钻头遇到多孔的地层或岩石,在较高压力条件下,钻井液会通过这些孔隙流失,目前裂缝性漏失成为钻井过程中最常见且最难处理的事故之一,裂缝性地层恶性井漏已成为制约油气勘探开发进度的世界性难题。为了解决该难题,建立了复杂结构井裂缝性漏失模型,该模型考虑了多种工况下多裂缝漏失的情况,基于钻井泥浆漏失测量理论,计算漏失后井下压力分布情况;首次采用压力计阵列实现井下裂缝位置的判识,依据压力传感器所得压力数据,绘制井下环空压力云图,进而优化压力传感器空间布置。研究结果表明,该压力计阵列方法采用最优的压力传感器空间排列,实现井下环空压力的多点测量;该压力计阵列方法可以实时、直观地获取井下环空压力数据,帮助地面作业人员监测井下压力情况;通过压力云图精确地评估裂缝位置及张开度等信息,可量化漏失风险,便于实施泥浆密度调整或增加泥浆颗粒尺寸等针对性措施,为堵漏作业提供坚实的理论依据。With the expansion of oil and gas exploration and development to the middle and deep field,fracture leakage is one of the most common and difficult accidents in the drilling process.And the malignant well leakage in fractured formations has become a global problem that restricts the progress of oil and gas exploration and development.To solve this problem,this paper establishes a fracture leakage model for complex structural wells,considers multi-fracture leakage under various working conditions,optimizes the spatial arrangement of pressure sensors,and adopts a manometer array for the first time to realize downhole fracture location identification.The study results show that the manometer array method can obtain the downhole circumferential pressure in real time and intuitively,and accurately assess the fracture location and degree of openness through the pressure cloud map,to quantify the risk of leakage and facilitate the implementation of targeted measures such as adjusting the mud density or increasing the mud particle size,which provides a solid theoretical basis for the leakage plugging operation.

关 键 词：裂缝性漏失 层位识别 压力测井 压力计阵列 压力云图 

分 类 号：P631.84[天文地球—地质矿产勘探]