历史拟合中，wconhist关键词的RESV到底什么意思？

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WCONHIST

• 	ORAT	The well produces the observed oil rate. The other phases will be produced according to their mobility ratios.
  	WRAT	The well produces the observed water rate. The other phases will be produced according to their mobility ratios.
  	GRAT	The well produces the observed gas rate. The other phases will be produced according to their mobility ratios.
  	LRAT	The well produces at a liquid rate equal to the sum of the observed oil and water rates. The calculated oil and water rates may differ from the values entered if the mobility ratios have not been fully matched.
  	CRAT	The well produces at a combined rate equal to the linear combination of the observed oil, water and gas rates. The coefficients for the linear combination are defined with keyword LINCOM.
  	RESV	At each timestep, ECLIPSE calculates the reservoir fluid volume rate corresponding to the observed phase flow rates, using the reservoir pressure at the beginning of the timestep, and puts the well under RESV control to produce at that target. (The reservoir pressure used is either the average hydrocarbon pressure of the field, or the average hydrocarbon pressure of a specified fluids-in-place region, depending on the entry for item 13 in the keyword WELSPECS.) The calculated oil, water and gas rates may differ from the values entered if the mobility ratios have not been fully matched.

  
  

地平线

RESV是按油藏压力以及油藏目前条件下油水气运移及生产情况，有点像油藏弹性开发的意思，油藏能产出多少就产出多少，不一定非要达到历史生产数据的产油速率或者产水速率，不受人为的控制，而定液LRAT/ORAT等是给油藏一个指标，必须按照这个标准进行生产，这是个人理解。历史拟合一般按定液，定油/定水都可以

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做历史拟合时候应该定哪个参数？

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RESV是在定什么？

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地平线 发表于 2016-1-15 10:48
RESV是按油藏压力以及油藏目前条件下油水气运移及生产情况，有点像油藏弹性开发的意思，油藏能产出多少就产 ...

谢谢您的回答，那如果是按照井底压力控制生成，历史数据又是如何约束的呢？

Jing747

手册解释的还算清楚，就是用开始时间步的油藏压力将你观测到的各相的流量折算成地下油藏条件流体的体积流量，然后井按照RESV的控制方式来生产折算出的那么多量。如果流度比没有完全拟合上的话，那么模拟器计算出来的各相：油，水，气各自的产量可能跟输入的观测值不同。（开始时间步的压力可以是油田的烃类平均压力，也可以是某个储量分区的烃类平均压力，取决于WELSPECS第13项的设置）

通俗来讲，我认为就是，某一时刻你现场观测到了多少东西（不管是油水还是气），折算到地下，模拟器就会按照这个量来进行生产（也不管油水气各自产多少）。也就是说，只保证地下物质平衡，然后通过RESV控制来拟合压力。这是历史拟合的第一步。