摘要
1998年东濮凹陷文、卫、马油田共有油井 5 2 7口 ,其中有 2 43口井由于存在高含水层、分层开采困难、井况破坏、污染堵塞、低渗透、偏磨频繁躺井等原因 ,投入产出比只有 1∶0 .82。 1 999年从技术经济学的角度 ,对文、卫、马油田产生低效井原因进行分析 ,针对每一种低效原因提出以经济效益为中心 ,以保持注采关系的相对完善为基础 ,采取地下、井筒、地面相结合的综合措施 ,实现了增油控躺、增效节支、提高开发效益的目的。对局部注采关系不完善井区 ,低效井转注 ,增加受效方向 ;采用大修、补孔、压裂、堵水等手段 ,有效益地挖掘层间潜力 ;对生产时率低、正见效或待见效井 ,适时提液。通过这些常规措施的实施 ,发挥了现有成熟工艺技术的最佳经济效果。对投入产出比在 1∶0 .85以上的井 ,依靠有效控制电量、治躺维持生产 ,节支创效 ;对低产低能或层间潜力小的高含水井 ,实施关井、间开、单拉、收油等措施 ,挖潜增效措施取得了显著效益 ,生产成本下降 3 1 .9% ,投入产出比达到 1∶1 .2 5。成熟常规工艺技术的综合利用值得进一步深入研究。图 1参
In 1988, 243 of the 527 oil producing wells of Wengmingzai, Weichang and Mazhai oil fields had an input output ratio of only 1∶0.82 due to high water cut pay zones, difficult zonal production, bad well condition, formation damage and plugging, low permeability and frequent grind leading to suspension of wells. Since 1999, a serious technical measures have been adopted, including analysis of the reasons causing low efficiency of wells,well produing performance analysis at well site, integration of subsurface, wellbore and surface methods, which results in the realization of increasing oil production by controlling the well suspension and improving producing efficiency of wells while reducing their production cost. The practicable methods adopted integrally for this field, including converting the low efficient wells into water injectors, increasing the affection directions, workover, recompletion, fracturing and water shut off for not fully perforated well patterns; increasing the liquid production for non response wells; controlling the electric power consumsion and suspension of those wells with an input output ratio larger than 1∶0.85; and shutting in or intermittent opening oil wells,collecting timely the oil produced for the low potential or low production capacity wells,are very useful in reducing the production cost by 31.9% and increasing the input output ratio to 1∶1.25
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2001年第3期73-74,共2页
Petroleum Exploration and Development
关键词
油井
低效井
经济效益
增效措施
Stripper well,Economic benefit, Measure, Effect, input output ratio
