Practice of liner cementing technology for high temperature and large displacement wells in Pinghu Oilfield

Abstract:

The Pinghu oil and gas field has entered the mid to late stage of development， and the development of deep high-temperature and high-pressure and marginal oil and gas resources is an important means of subsequent energy alternation. The development of deep strata with large displacement and horizontal wells is the only way to ensure production and stability. In view of the losses caused by the failure of wellbore leakage and pressure testing， as well as the failure of downhole tail pipe cementing at high temperature and high pressure in the Pinghu block， it is necessary to optimize the cementing process for high temperature and high pressure wells and large displacement wells in order to ensure wellbore safety and reduce operating costs， in order to meet the requirements of subsequent energy development and production replacement. This article starts with the difficulty of cementing PH-X high-temperature and large displacement wells， systematically elucidating the difficulties and countermeasures of cementing high temperature and high pressure and large displacement horizontal wells in the block. The aim is to explore a cementing technology that meets the requirements of Pinghu block for high-temperature and high pressure and large displacement wells， and also provide some reference and reference for cementing similar large displacement wells.

Key words:high temperature and large displacement well;liner cementing;cementing slurry;Pinghu Oilfield