METHOD FOR LOADING OIL PIPE IN GAS WELL WITHOUT WELL KILLING, DECOMPOSABLE BRIDGE PLUG, AND METHOD FOR PREPARING MATERIAL THEREFOR

摘要

Disclosed is a method for loading an oil pipe in a gas well without well killing, the method comprising the following steps: loading a bridge plug (3) into a wellbore (1), such that the bridge plug packs and blocks in the wellbore at a desired position; after pressure is released in the wellbore, injecting water in the wellbore to replace gas in the wellbore; and loading an oil pipe (2) into the wellbore to the position of the bridge plug. A decomposable bridge plug used for the method for loading an oil pipe in a gas well without well killing, and a method for preparing a material therefor are further disclosed. The method for loading an oil pipe in a gas well without well killing successfully solves the problem of the high cost of loading an oil pipe under pressure after casing injection and fracturing, while also solving the problem of damage caused to a reservoir by a well killing fluid used in the process of first killing well with the well killing fluid after casing injection and fracturing, and then loading a production oil pipe of the required specification not under pressure, thereby achieving the aims of saving costs and protecting the reservoir.