Papers by Keyword: Bridge Plug

Abstract: The bridge plug as a downhole plugging tool, bridge plug is mainly used in oil recovery position, fracturing , water plugging, testing, temporarily seal technology measures ect, have simple construction and high pressure difference, long seal time and accurate position etc., become an effective technology in reservoir reconstruction, which has been widely used in underground work process. After decades research and application, foreign bridge plug in the high temperature resistance, high pressure resistance, multi-purpose, new materials, recycling and reliability etc have made considerable progress. In recent years, domestic also initially formed series bridge plugging technology, and in constant development and improvement, but the present commonly used metal bridge plug mill deblocking exist great difficulties, especially in large slope, horizontal milling deblocking more difficulty and complex than vertical well , in order to solve this problem, develop nonmetallic material bridge plug.

Abstract: According to the demand of exploiting the poor-thin oil layer in Daqing oilfield, Y422 retrievable fracture bridge plug is designed. Match usage of this bridge plug and other instruments can fracture multiple oil reservoirs with one-trip string, which is characterized by simple technology and safety operation. This bridge plug has realistic significance and practical value for improving oilfield economic benefits and provides an extensive application prospect. After setting process, the slips brace the bridge plug whose performance have a directly influence on the oil well productivity and production safety. In order to make sure that the bridge plug slips can meet the anchoring requirement, the actual working state of the slips system was analyzed by using finite element software, and the stress distribution rules were obtained. The results provide theoretical basis for optimizing slip structure and improving working reliability.