利用“异常”试井曲线分析油水井工程问题  

Utilizing the "abnormal" well test curve to analyze the engineering problems in oil and water wells

作　　者：田新建[1] 廖伟伟[1] 补璐璐[1] 马腾[1] 苑趁来 袁泉 TIAN Xinjian;LIAO Weiwei;BU Lulu;MA Teng;YUAN Chenlai;YUAN Quan(Development Management Department,PetroChina Tarim Oilfield Company,Korla,Xinjiang 841000,China;Huatai Oilfield New Technology Company,Langfang,Hebei 065000,China;No.2 Engineering Company,CNPC Bohai Drilling Company Limited,Langfang,Hebei 065007,China)

机构地区：[1]中国石油塔里木油田分公司开发事业部,新疆库尔勒841000 [2]廊坊开发区华泰油田新技术有限公司,河北廊坊065000 [3]中国石油集团渤海钻探工程公司第二钻井工程分公司,河北廊坊065007

出　　处：《油气井测试》2018年第4期67-72,共6页Well Testing

基　　金：塔里木油田分公司面向生产科研项目"轮南油田注水井压降试井综合研究"(021017100418)

摘　　要：在油田动态监测中,试井曲线易受到生产波动、井筒效应以及工程等诸多因素的影响而出现"异常",分析"异常"试井曲线可得到油水井的工程信息。以3口试井曲线"异常"井为例,从生产管柱工艺、井筒流体流动特征、储渗特征、压力变化等多方面入手,根据油管内压力、温度异常上升确定了注水井可洗井封隔器开启的问题;压力突然下降和前后恢复速率不同确定了自喷油井大压差封隔器失封;压力恢复曲线阶段变化形态确定了气举井管柱漏失工程因素,并给出了工程因素影响的佐证依据。该分析有助于在试井设计时考虑更多的工程因素可能对资料录取产生的影响,提高资料解释的准确性。During the process of dynamic monitoring in oilfields,the well test curves are subject to‘abnormalities＇ due to the production fluctuations,wellbore effects,engineering and other factors. However,the＂abnormal＂test curve contains a wealth engineering information of oil and water well. In this paper,three wells with‘abnormal＇test curves are taken as an example to analyze the engineering information. From the aspects of production string process,wellbore fluid flow characteristics,reservoir permeability characteristics,pressure changes,etc.,it can solve the problem that when it is necessary to open the well-flushing packer in the injection wells according to the abnormal rise in the pressure and temperature of the tubing; Meanwhile,sudden pressure decline and different recovery rates before and after can be used to indicate that the large pressure differential packer loss of the seal in flowing well; and,the phase change pattern of the pressure recovery curve determines the engineering factors such as string missing in the gas lift well and gives the supporting evidence for the influence of engineering factors. This analysis helps to consider more engineering factors which may affect the data acquisition in the design of the well test so as to increase the accuracy of data interpretation.

关 键 词：试井 试井曲线 曲线异常 工程信息 可洗井封隔器 封隔器失封 气举管柱漏失 

分 类 号：TE353[石油与天然气工程—油气田开发工程]