克深区块高温超高压气井环空压力异常风险评估  

Risk Assessment of Abnormal Annular Pressure in High Temperature and Extrahigh Pressure Gas Wells, Kesheng Block

作　　者：曾努[1] 曾有信[2] 廖伟伟[3] 彭建云[1] 补璐璐[3] 张宝[1] 景宏涛[1] 

机构地区：[1]中国石油塔里木油田公司油气工程研究院,新疆库尔勒841000 [2]中国石油塔里木油田公司开发处,新疆库尔勒841000 [3]中国石油塔里木油田公司开发事业部,新疆库尔勒841000

出　　处：《天然气技术与经济》2017年第1期21-23,34,共4页Natural Gas Technology and Economy

摘　　要：塔里木油田克深区块气井具有井深、压力高、温度高的特点,此类高温超高压气井环空压力出现异常后继续生产风险大,若全部开展修井作业解除安全隐患,又产生修井费用高、作业难度大的问题。针对该情况,提出对环空压力异常井进行风险评估,系统评估气井开井、关井工况下存在的风险,根据评估结果采取针对性措施;对风险可控的气井实施监控生产;对存在巨大安全隐患的气井实施修井作业,从而实现气田的安全生产。In Keshen block, Tarim Basin, most gas wells are featured by deep well depth, and high pressure and temperature.For these wells with high temperature and extra-high pressure, if annular pressure occurs abnormal, there is a huge risk existing in the follow-up production. Furthermore, other problems of both high cost and more operation difficulty also appear in a workover which may remove security risk. So, a risk assessment of abnormal annular pressure is presented to evaluate some risk in open and shut well. Meanwhile, many measures are made in order to ensure a safe production, containing supervision for some wells with controllable risk and workover for other ones with huge security risk.

关 键 词：高温超高压气井 环空压力 风险评估 隐患 

分 类 号：TE38[石油与天然气工程—油气田开发工程]