METHOD FOR COMMUNICATION OF DUAL HORIZONTAL WELLS

摘要

The invention discloses a method for communication of dual horizontal wells, and relates to the oil and gas development field. The method comprises said steps of: testing steam-injection horizontal wells and production horizontal wells; injecting solvents into the steam-injection horizontal wells and the production horizontal wells respectively; injecting water into the steam-injection horizontal wells via wellbores of the steam-injection horizontal wells, injecting water into the production horizontal wells via wellbores of the production horizontal wells; continuously injecting water into the steam-injection wells and the production horizontal wells respectively, and improving water-injection pressure of the steam-injection horizontal wells, water-injection pressure of the production horizontal wells; after closing the steam-injection horizontal wells and the production horizontal wells meets a first preset condition, injecting gas into the steam-injection horizontal wells and the production horizontal wells respectively, so that underground water flows back to ground; and after the underground water flows back to the ground, injecting isobaric steam into the steam-injection horizontal wells and the production horizontal wells meets a second preset condition. The present application can effectively enhance a degree of uniformity of communication between dual horizontal wells, shorten communication time between the dual horizontal wells, and significantly reduce consumption of solvents.