Research And Application Of Matching Technology For Horizontal Wells Injection-production

Horizontal wells have become an important means for tapping the potential of maturefields and establishing the production capacity of new blocks in Liaohe Oilfield,especiallythey have played a key role in thin layer of oil reservoir, the layered crack reservoir of edgewater, block bottom water under the ground,they will become the important pillar of theliaohe oilfield production of oil and gas production. With the speeding up of the degree ofhorizontal scale application, however, the problems appeared gradually, which restrict thedevelopment of the horizontal well technology. Such as oil and gas Wells due to the reasonsof large production pressure differential, loose sandstone reservoirs rock cementation,which make the sand into the wellbore, block of oil and gas channel, resulte in oil and gaswell production, damage to the liner, and other issues. Horizontal wells of thermal recoveryof heavy oil effect of reservoir heterogeneity and the surrounding vertical wells,causinguneven producing horizontal sections. Downhole pump depths were limited,and liftingcapacity is not enough;Low permeability, high water cut in horizontal well productivitydecline. Above problem is not only the difficulties of the existing horizontal well technology,but also they directly affected the next deployment, the application of horizontal well, at thesame time, they will become the main contradiction of restricting the horizontal well drilling.So far, systematic research has been carried out in terms of horizontal well andmultilateral well recovery technologies in foreign countries. In China, althoughsomebreakthroughs have been made in some areas, But there are still some limitations insubsection two-pipe steam injection, steam injection, low permeability fracturing ofhorizontal wells, horizontal well reservoir for water plugging, horizontal well for heavy oilviscosity reduction, horizontal well lifting, and even some technology at home and not in.Based on the optimization of steam injection technology of horizontal wells, horizontal wellfracturing, water plugging, viscosity reduction technology research, horizontal well liftingtechnology research, which maked up for the horizontal well completion and productiontechnology research both at home and abroad,and provide strong technical support for thedevelopment of drilling horizontal Wells in liaohe oilfield technology.