At present, Hei47 block has already entered high water cut period, and it exists many problems, such as imbalance producing reserves, serious water flooded in main small layer, imperfect injection-production well spacing and so on. Aiming at these problems, this paper analyzed from two aspects of the potential: the first is the potentiality of well pattern thickening which would analyze the reasons of the remaining oil enrichment through four different imperfect patterns, the paper proposes different schemes. For example, this study design new wells in the injection-production incongruous area; As for the area without the control of well net, for example, the study design a horizontal well near the fault where concentrated much remaining oil, and the production conditions are good; The second is making some modification measures in high water cut layer, and perforating other potential small layers, in the light of the wells in low location and is high water cut can be considered to transfer to injection wells. Structural reservoir high-yielding well mainly concentrated in the structural high place, flooded well in the low position, this area is suitable for edge water injection.

Research and Application of Tapping Potential Remaining Oil of Low Permeability Reservoir in Hei47 Block, Jilin Oilfield

According to low porosity, poor permeability, high temperature and plentiful fracture reservoir in Baolang Oilfield, profile control agent plugging fracture, operating process and related application technologies suitable for the reservoir are researched. The injection start-up pressure goes up, the water injectivity index drops, the water injectivity profile improves, the reservoir stimulates obviously due to application of this technologies in Baolang Oilfield.

Liu Xi-jie

Papers

The Research and Application of Profile Control for Low Porosity and Poor Permeability Fracture Reservoir in Baolang Oilfield