Research Status and Prospect of Heavy Oil Recovery Technology

Abstract

With the continuous exploitation of most reservoirs in China, the proportion of heavy oil reservoirs increases, and the development difficulty is greater than that of conventional reservoirs. In view of the important subject of how to improve the recovery factor of heavy oil reservoir, the thermal recovery technology (hot water flooding, steam flooding, steam assisted gravity drainage SAGD and steam huff and puff) and cold recovery technology (chemical flooding, electromagnetic wave physical flooding and microbial flooding) used in the development of heavy oil reservoir are summarized. The principle of action is analyzed, and the main problems restricting heavy oil recovery are analyzed The main technologies of heavy oil recovery are introduced from the aspects of cold recovery and hot recovery. Based on the study of a large number of literatures, and according to the development trend of heavy oil development, suggestions and prospects for the future development direction are put forward.

Experimental study on enhancing heavy oil recovery by mobility control oil displacement agent

“…(5) Water drives the core tube to measure the absolute permeability of the 100% water phase of the sand-filled core; (6) Put the sand filling tube into the oven and heat it to the experimental temperature (50 degrees Celsius) and keep the temperature constant;…”

“…Among the proven oil resources, the proportion of heavy oil getting bigger [1][2][3][4] . Heavy oil resources can effectively alleviate the shortage of resources, Efficient and economic development of heavy oil resources has important practical and strategic significance [5][6][7] . There are a lot of unexploited heavy oil in China., of which 20% of the total oil resources are heavy oil and bitumen resources.…”