多功能环空带压地面诊断方法及装置研究

Multifunctional Sustained Annulus Pressure Ground Diagnosis Method and Device

杨顺辉 何汉平 张智 窦雪锋 银熙炉

YANGShunhui HEHanping ZHANGZhi DOUXuefeng YINXilu

中国石化石油工程技术研究院, 北京 昌平 102206 西南石油大学石油与天然气工程学院, 四川 成都 610500 中国石化江汉油田采气一厂, 重庆 万州 404120

Research Institute of Petroleum Engineering and Technology, SINOPEC, Changping, Beijing 102206, China Petroleum Engineering School, Southwest Petroleum University, Chengdu, Sichuan 610500, China No. 1 Gas Production Plant, Jianghan Oilfiled, SINOPEC, Wanzhou, Chongqing 404120, China

为突破国外技术封锁，解决国内技术功能较少的缺点，克服现有装置体积大、质量重、搬运不方便的问题，提出了一种多功能环空带压地面诊断方法，设计了一套模块化设计方案和集成组合方案，并研制出了便携式实物装置系统。该系统包括气液分离及固相过滤模块、温压及流量监测模块、气相参数监测模块、液相参数监测模块及液面高度监测模块，可形成不同功能的集成组合方案，结合数据无线传输技术和配套分析软件，具备环空带压原因分析、漏点位置计算、泄漏程度评估及风险程度判断等多种诊断分析功能。现场测试结果显示，案例井环空压力增加的原因是水泥环胶结存在一定缺陷，漏点深度为3 120 m左右，泄漏速率0.012 m/min。系统测得结果与实际情况吻合，验证了诊断方法的合理性和装置的可靠性。

In order to break through foreign technology blockade, solve the problems of less functions of domestic technology and the problem of inconvenience in transportation due to large size and heavy mass of the existing devices, we put forward a kind of multi-functional sustained annulus pressure ground diagnosis method, design a set of modular and integration processing plan, and develop a portable device system. The system includes gas-liquid separation and solid phase filtration module, temperature pressure and flow monitoring module, gas phase parameter monitoring module, liquid phase parameter monitoring module and liquid level height monitoring module, which can form an integrated combination scheme with different functions, combined with wireless data transmission technology and supporting analysis software. It has diagnostic analysis functions, such as cause analysis of sustained annulus pressure, calculation of leakage point position, leakage degree assessment and risk degree judgment. The field test results show that the reason for the increase in annulus pressure in the case well is a certain defect in cement ring bonding, the leak point depth is about 3 120 m and a leak rate of 0.012 m/min. The results measured by the system coincide with the actual situation, which verifies the rationality of the diagnosis method and the reliability of the device.

10.11885/j.issn.1674-5086.2022.03.09.01