Research and Application of New Reservoir Reconstruction Technology for Fractured Bottom Water Reservoir

Abstract

Igneous rocks in a block of western Xinjiang, China, are fractured reservoirs in exploration phase currently, and most of those oil reservoirs are found in massive bulk format with water at the bottom. It is difficult to control the height of fractures during fracturing, and the oil and water are easy to flow out after fracturing. In addition, natural fractures are developed, so structure control measures are difficult, resulting in a small scale of fracturing reconstruction, not up to the expected effect of fracturing stimulation; In order to quicken the pace of exploration and development in this area, and make the resource amount into the recoverable reserves as soon as possible, it is necessary to carry out the study on the fracturing technology of igneous rocks fractured reservoir in this area, and form targeted applicable technology, so as to improve the success rate of igneous reservoir fracturing and the output per well. A unique diagnostic method for igneous rock fractured reservoirs was developed by testing the combination of fracturing interpretation parameters and interpretation curves (by introducing generalized G function analysis method). The dynamic gel plug controlled seam technology is adopted, and the integrated thinking of geological comprehensive understanding and process technology is introduced. Through the optimization design and the application of new materials, the well area will achieve effective oil increase and water control; The numerical simulation method helped optimizing the fracturing engineering parameters, which can greatly reduce the difficulty during fracturing job implementation causing by geological complexities, and provides new technical support for improving the fracturing success rate and reconstruction scale of the well stimulated volume.