摘要
通过规定单井产能法，合理采气速度法、丰度计算法、利用类比法确定井距四种方法对盒2＋3气藏理论井距进行计算，得到理论合理井距为680—780m。算得实际平均井距为580m。最后通过与同类型气田、2004年开发方案对比进行了合理井距分析，得出以下几点结论：①盒2＋3气藏现在的采气速度达到了3．32％，过快的开采速度会使气藏压力下降迅速，影响气藏最终采收率；（④平均井距（580．3m）略微偏小，井距分布不均匀，西部井距比较密，东部和北部井距比较稀；③总体上看来，大牛地盒2＋3气藏井网控制程度达79％，加密空间不大，属于比较完善的井网。
There are four methods which are providing for single well production methods, reasonable gas production rate, abundance method, obtaining well spacing by using analogy theory on calculating theory well spacing of He-2 ＋ 3 gas reservoir, obtain rational theory well spacing as 680 -780 m. And calculating the current actual well spacing, get average well spacing of 580 m. Final analysis of rational well spacing through being compared with the similar gas field and the development plan in 2004 is made and concluded that ： （ 1 ） Now the gas production rate of He-2 ＋ 3 gas reservoir reaches 3.32%. That it＇ s too fast will make reservoir pressure drops rapidly, affecting the final recovery efficiency. （2） The average spacing （580.3 m） is slightly too small. And well spacing is of uneven distribution. （3） On the whole, it appears that pattern efficiency of Daniudi He-2 ＋ 3 gas reservoir has reached about 79%, and there is little encrypted space. It belong to the improved pattern.
出处
《科学技术与工程》
北大核心
2013年第26期7798-7802,共5页
Science Technology and Engineering
关键词
低孔低渗低压气藏
井距
井网密度
采气速度
采出程度
low pressure
low porosity and low permeability
well spacing
density of well pattern
gas production rate
degree of reserve recovery
