变工作制度产出剖面测井在L气田的应用  

Application of Production Proflle Logging After Adjusting Work System in L Gas Field

作　　者：姚亚彬 虞兵 王谦 霍勇 刘文强 

机构地区：[1]中国石油大学(华东)地球科学与技术学院 [2]中国石油集团测井有限公司油气评价中心 [3]中国石油集团测井有限公司塔里木事业部

出　　处：《国外测井技术》2016年第4期44-46,4,共3页World Well Logging Technology

摘　　要：塔里木盆地L气田是边底水块状气藏,属于常温异常高压气藏。油田公司在L气田开采过程中,对多口井进行调产(即变工作制度),以达到排出井底积液,优化开采环境,提高采出效率的目的。作者在测井解释的过程中,通过对变工作制度下产出剖面测井的对比,形成了一些初步的认识。增大油嘴直径,最小携液气量降低,而实际产气量增大。当实际产气量大于最小携液气量时,积液被气体带到地面。随着井筒积液排出,井筒液面也相对下降,被积液淹没的气层重新大量产气,甚至引起主次产层变化。增大油嘴直径,井筒流压、温度降低,密度变小。增加油嘴直径,气层温度变低,出水层位温度变大,导致出水点温度正异常更明显。因此通过改变工作制度,可以有效跟踪L气田的生产动态,准确寻找出水层位。L gas field in the Tarim basin belonged to the reservoir of edge-bottom water.It is the gas reservoir of normal temperature and abnormal high pressure.During exploitation,Tarim oilfield company adjustes production of many wells to achieve the aim of lifting bottom liquid out,optimizing the environment and enhancing the degree of reserve recovery.By comparison and analysis of production profile logging data after adjusting work system in well logging interpretation,the author formed some preliminary understandings.When the choke diameter is increased,the minimum removal liquid gas production is reduced,but true gas production is increased.When actual gas production is larger than the minimum removal liquid gas production,the bottom liquid is lifted out to the ground surface.The liquid surface in the wellbore falls as the bottom liquid is lifted out.the gas reservoir submerged by the bottom liquid reproduces a large amount of gaseous hydrocarbon,indeed resulted in the change of the primary and secondary gas reservoir.When the choke diameter was increased,the wellbore flow pressure and the temperature decrease,the density becomes relatively smaller.When the choke diameter is increased,the gas temperature decreases,the temperature of producing water increases,resulted in the temperature positive abnormality of water bursting more obvious.Therefore,according to the adjustment of work system,the dynamic production of L gas field is monitored effectively; the zone of producing water was recognized accurately.

关 键 词：产出剖面测井 气田开采 异常高压气藏 测井解释 井筒积液 层位 流压 流体密度 正异常 曲线形态 

分 类 号：TE357.8[石油与天然气工程—油气田开发工程]