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难采储量二次评价已经成为辽河油区开发生产的必然要求。针对产能建设目标区块日趋减少,品质变差的实际情况,加大探明未开发储量评价力度,随着开发理念的转变及复杂结构井技术的日趋成熟,使得老油藏扩边以及探明未开发储量二次评价成为新区产能建设的重要组成部分(尤其是过去那些因为油层薄、低渗油藏,直井开采效益差的难动用油藏)。我们通过转变评价思路—从储量整体性评价向储量的可动用性评价转变;转变评价对象—从油藏评价向平面和纵向上有利部位评价转变;转变评价手段—从直井评价向复杂结构井评价转变这些评价技术路线。通过采用薄层水平井技术使油田难采二次评价和二次开发成为老油田增储上产的重要手段之一。
The secondary evaluation of the hard-to-extract reserves has become a necessary requirement for the development and production of the Liaohe Oil Region. In view of the fact that the target blocks of production capacity are being reduced and the quality is getting worse, the evaluation of undeveloped reserves has been stepped up. With the change of development concept and the maturity of complicated structure and well technologies, the expansion of old reservoirs and exploration The secondary evaluation of the undeveloped reserves has become an important part of the capacity building in the new zone (especially the hard-to-use reservoirs in the past that were characterized by poor oil recovery due to thin reservoirs and low permeability reservoirs). We change the assessment ideas from reserves integrity assessment to reserve availability assessment; change assessment objects - from reservoir assessment to the evaluation of favorable sites in both horizontal and vertical direction; Change these evaluation technology routes. Through the use of thin-layer horizontal well technology, the secondary evaluation and secondary development of difficult-to-use oilfields have become one of the most important means to increase reserves and production of old oilfields.