Large-scale three-dimensional simulation method for exploiting super-heavy oil reservoir through FUSE technology

Abstract

The invention discloses a three-dimensional simulation method for exploiting a super-heavy oil reservoir through an FUSE technology. The method is implemented under the true triaxial loading conditionand comprises the following steps of target stratum simulation, stress loading, hydraulic expansion, steam circulating process simulation and heavy oil extracting and exploiting process simulation. Asimilar material and natural oil sand are adopted to simulate the stratum, stress loading is conducted to restore the true reservoir stratum stress environment, and oil sand reservoir stratum hydraulic expansion is conducted through a high-pressure water pump and a pre-buried stainless steel pipe; temperature data of different time and stratum positions are collected through a temperature sensor;the communication performance of double horizontal wells and the developing situation of the expansion area are detected; then, high-temperature steam injection circulation operation is conducted through a steam generator, temperature data are collected through a temperature sensor, and real-time monitoring of steam cavity expanding is achieved; and after the reservoir stratum temperature reachesthe transferring temperature, heavy oil exploiting is conducted through an external negative-pressure extracting exploiting system. The three-dimensional simulation method provides an effective testing measure and method for studying the mechanism of exploiting the super-heavy oil reservoir through the FUSE technology.

Description

technical field [0001] The invention relates to the technical field of model tests for mining methods of super-heavy oil reservoirs, in particular to a large-scale three-dimensional simulation test method for mining super-heavy oil reservoirs with FUSE technology. Background technique [0002] my country is rich in heavy oil resources, and heavy oil has been exploited in Xinjiang, Liaohe, Shengli, Tarim and other oil regions. The ultra-heavy oil sand reservoir is a special kind of oil reservoir. The heavy oil has extremely high viscosity and poor fluidity. It is difficult to develop the heavy oil reservoir efficiently by conventional oil and gas recovery technology. Heating oil sand reservoirs can reduce the viscosity of heavy oil, increase its fluidity, and improve the efficiency of heavy oil production. However, the efficiency of conventional steam stimulation is extremely low and cannot meet the needs of heavy oil production. In 1978, Dr. Buter of Canada proposed the Ste...

AI Technical Summary

Problems solved by technology

At present, the research on the recovery of heavy oil by FUSE technology is almost focused on the analysis of field construction experience. Few scholars have conducted systematic research on FUSE technology to analyze the steam migration law in oil sand reservoirs after hydraulic expansion, especially the lack of research on oil sand reservoirs. Experimental method for the effect of layer heterogeneity (sandwich) on FUSE technology

Images