一、概论通常的油芷评价是用 DST 的恢复段,根根压力恢复理论,应用某种解释方法(如霍纳法,麦金利图版法、格林加顿图版法等)来计算地层参数,从而确定地层特性。虽然这些方法得以广泛的应用,但也存在着一些不足。首先,在计算地层参数时,,需假设恢复开始之前油井是以某一恒定产量生产的,但在大多数的 DST 中,由于有限的流动时间或由于地层渗透性较差,流体一般不能到达地面,这样,求得稳定的产量就很困难;其次,压力恢复理论只能用于具有良好的恢复曲线的 DST 中,对于没有压力恢复段或恢复曲线不 First, the general evaluation of oil-jay is the use of DST recovery section, root pressure recovery theory, the application of some explanation (such as Horner, McKinley plate method, Greengate graph method, etc.) to calculate the formation parameters Determine formation characteristics. Although these methods are widely used, there are some shortcomings. First of all, when calculating formation parameters, it is assumed that the well is produced at a constant yield until recovery begins, but in most DSTs the fluid will generally not reach the ground due to limited flow times or due to poor formation permeability , So that it is difficult to find a stable yield; secondly, the pressure recovery theory can only be used in DST with good recovery curve, and for no pressure recovery section or recovery curve