基于酸处理的解除钻井液漏失损害实验研究

裂缝性油气藏钻井过程中钻井液漏失严重制约着勘探开发进程。漏失会导致钻井液固相和液相侵入地层深部,固相沉积及液相滞留会严重损害基质和裂缝渗透率,影响后期开发效果。以九龙山气田须家河组裂缝性地层为研究背景,设计了基于酸处理方法解除钻井液漏失损害的实验评价方法,评价了原钻井液、改性钻井液返排恢复率;并分析钻井液漏失损害机理及酸处理解除钻井液漏失损害原理。

Based on the acid treatment to remove leakage of drilling fluid damage experimental study

Fractured reservoirs in the process of drilling mud loss seriously restricts the process of exploration and development. Loss will lead to drilling fluid invasion of solid phase and liquid phase formation of deep, solid phase deposition and liquid retention would result in grave damage to the matrix and fracture permeability, affect the later development effect. In this paper, the Kowloon hills field must be fractured formations as the research center of the background, Based on acid treatment method to remove leakage of drilling fluid damage evaluation method of experiment, The original drilling fluid, drilling fluid were evaluated flowback recovery rate, And analyze the leakage of drilling fluid damage mechanism and principle of acid treatment to remove leakage of drilling fluid damage.