Shale oil reservoir reconstruction and efficient development technology

With the continuous development of exploration and development technology, shale oil exploration has made major breakthroughs, and the amount of recoverable resources has continuously increased. The shale oil is expected to become an important strategic replacement resource for China in the future. Through the investigation of a large number of relevant literatures at home and abroad, the shale oil definition, development history, reservoir transformation and development technology at home and abroad are analyzed and compiled, and the understanding is made that the shale oil reservoir develops nano-scale pores and crack systems, which is conducive to shale oil accumulation; The reservoir fragility index is high, which is suitable for fracturing and transformation; however, the reservoir is sensitive, the permeability is low, and the water saturation is high. In the development and transformation, it is necessary to combine the above characteristics of the reservoir to propose appropriate technology. The technologies of variable displacement fracturing technology, repeated fracturing technology, small well spacing solid development technology, synchronous fracturing technology, volume reforming technology, artificial oil and gas reservoir and other reservoir reforming processes, fracturing materials and microseismic crack testing are introduced. The frontier technology of shale oil development such as horizontal well drilling technology, " factory” operation, and geological engineering integration is described. Finally, the technical difficulties in the reconstruction and development of China ’ s shale oil reservoirs are analyzed, and corresponding exploration and development proposals are put forward. In order to provide reference and reference for the development of shale oil in China.