正峰油气藏概念(Ⅱ)

DEFINITION OF STILL VIGOROUS RESERVOIR (Ⅱ)

比较了正峰油气藏与源控、源盖共控、满凹含油等概念的异同,分析了在“油气藏”位置、形态、规模、所属类别、如何寻找油气藏和建立油气勘探的方向与方法等方面所存在的相同点在于对盆地控油论的依赖,不同点在对“藏”的位置、结构、“藏”中流体属性、油气藏所属勘探开发阶段及开发的后效性认识上。针对正峰油气藏的属性与结构特点,给出了判断和寻找此类油气藏的方式方法。提出了开发正峰油气藏应注意控制产量、延长一次采油时间、不要轻易对油田注水注气、不要随便运用采油新技术、有些油气藏可以先抽底水等认识。研究认为:正峰油气藏的勘探可以不针对圈闭而展开,即可不以圈闭为勘探目标进行;开发不能以突击增产为前提,而应以累积增产为目标;要注意保护正峰油气藏结构;要及时做好一些老油气田的“唤醒”工作。

The concept of 'still vigorous reservoir' is compared with the ideas such as 'source controlling', 'source and seal mutual controlling', 'oil-bearing full of depression', and so on, from these aspects including the reservoir's position, configuration, types, scales, and the methods for discovery and directions for exploration. It is found out that the same points of those ideas lie in the same theory of 'basin-controlling oil', while the different points lie in the reservoir's location, structure, fluids property, the stage of exploration and development, and the aftereffect recognition of development, etc. In view of the features and structure characteristics of 'still vigorous reservoir', it is put forward the method of judging and finding this type of reservoir. It is pointed out while developing the 'still vigorous reservoir' some points should be paid more attention to as follows: controlling the production, extension of the time of primary oil recovery, water or gas injection in fields not in a hurry, adoption of a new technique of oil recovery not in a free and easy way, taking out the bottom water at first for some reservoirs. It is discussed that the exploration for the 'still vigorous reservoir' may not be aimed at the traps, that is to say, traps are not the exploration objects for the case; development will not regard shock stimulation but the cumulative stimulation as the purpose of production; the structure of the 'still vigorous reservoir' should be protected as well as possible; more works should be done well to refresh some old oil and gas fields.