平湖油田高温大位移井尾管固井技术实践

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

摘要:

平湖油气田已经进入开发阶段的中后期，深部高温高压及边际油气资源开发是后续能源交替的重要手段，进行深部地层大位移及水平井的开发是保产稳产的必由之路。前期平湖区块大位移井尾管固井因井漏试压不合格及高温高压井下尾管固井失败而造成了损失。为了确保井眼安全，降低作业成本，有必要对高温高压井及大位移井固井工艺进行优化研究，以满足后续能源开发、产量接替的要求。本文从PH-X高温大位移井固井难题入手，系统阐述区块内高温高压大位移水平井固井的难点及对策，旨在探寻一种满足平湖区块高温高压大位移井固井技术，同时也为同类型的大位移井固井提供借鉴与参考。

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.