英语翻译AbstractIn developing heavy oil from thin bottom water r

英语翻译
Abstract
In developing heavy oil from thin bottom water reservoirs,horizontal wells are mostly used in Bohai Bay,China.To
maximize oil production and avoid early water coning/cresting,horizontal wells are usually placed near the top of pay sands
and wells are initially produced with small pressure drawdown.However,the production responses from different wells
display significant variations even though they are operated under similar conditions.Some wells show premature water
coning and rapid water cut rising although high quality sands are targeted,while others show much delayed water
breakthrough and slower water cut increases.
A series of reservoir simulations have been conducted to investigate the observed differences.The simulation results
reveal that the existence of thin low permeable flow barriers with limited lateral extension/continuity between the wellbore
and water/oil contact plays the most crucial role impacting the water coning characteristics.Wells with such flow barriers
display later water breakthrough with steady increase of water cut after breakthrough,while wells without such barriers show
quick water coning with water cut reaching more than 90% rapidly.The existence of low permeability barriers between the
water/oil contact and horizontal wells could slow down water coning and result in much favorable production performance.
This phenomenon is then verified by simulations and actual field data from QHD32-6 field.The accurate predictions of
production performance rely on the knowledge of physical distribution of flow barriers relative to the wellbore location.In
practice,lateral thin flow barriers are usually at sub-seismic scales,and thus hard to identify for a green field.However,for
infill drilling in mature fields with many vertical wells drilled,it is possible to predict/correlate the spatial distribution of such
flow barriers from the logs of existing wells.Based on such analysis,we can optimize the locations of horizontal infill wells
to make full use of the flow barriers for improving production.
A number of horizontal infill wells were optimized and drilled in QHD32-6 field,Bohai Bay,China after identifying
flow barriers from the nearby vertical wells.These wells display good production performance having significant higher oil
production with delayed water breakthrough and slower increase of water cut.
跪谢!

摘要在发展水稠油油藏,薄的底部,水平井,大部分用在中国渤海湾.为了最大限度地提高石油生产和避免过早水锥进/档位,水平井井通常放在靠近顶部和支付最初缩编砂生产小的压力.然而,从不同的反应显示井的生产条件发生重大变化相似,即使在他们经营.有些油井水锥进和过早显示含水上升快,尽管高品质砂的目标,而另一些时间延迟水的突破和含水上升速度较慢.一个模拟系列水库进行了调查观察到的差异.仿真结果表明,延长生存薄有限横向低渗透流动的障碍/水连续性之间的井筒及/油跟起着最关键作用影响的水锥进的特点.这些障碍的油井流量显示突破后水后增加的突破与稳定含水率,而没有这些障碍,水井表明水锥进快与含水达90％以上的快速增长.水的存在之间的壁垒低渗透/油的接触和水平井可以减缓水锥进和性能造成更大有利生产.这种现象,然后实地验证了模拟秦皇岛32-6和实际现场数据.生产性能的准确预测依赖于知识的流动障碍的物理分布相对于井筒位置.在实践中,横向细流障碍通常是在分地震规模,因此很难确定一个绿色的环境.然而,在成熟的加密钻井领域与直井钻很多人来说,是可以预测/关联的障碍现有油井的日志空间流分布的影响等.基于这样的分析,我们可以优化加密井的地点,提高水平,使生产流程屏障充分利用.阿井数进行了优化和水平填充中国钻探秦皇岛32-6领域,渤海湾,在确定流动的障碍从附近的垂直井.这口井显示有良好的生产性能显着高于含水采油期延迟水突破和较慢的增长.