一种井壁稳定评价方法

Borehole wall stability evaluation method

Abstract

The invention relates to a borehole wall stability evaluation method. The borehole wall stability evaluation method comprises the following steps: mixing an object to be evaluated with clay; simulating a process that a drilling fluid treatment agent or filtrate enters stratum micro-pores by utilizing normal-pressure briquetted mud balls or clay sheets obtained by pressing in a pressurizing manner. A conclusion of a borehole wall stabilization effect of drilling fluid or the treatment agent is obtained through changes of shapes of the mud balls or clay sheets which are immersed under different conditions; the borehole wall stability evaluation method can be used for evaluating influences on bonding strength of stratum clay minerals after the drilling fluid treatment agent mono-agent or the drilling fluid filtrate enters the stratum micro-pores.
本发明涉及一种井壁稳定评价方法,将待评价对象与黏土相混合,并以常压团制的泥球或加压压制的黏土片,来模拟钻井液处理剂或滤液进入地层微孔隙。通过在不同条件下浸泡后泥球或黏土片形貌的变化,得出钻井液或处理剂稳定井壁的效果的结论;可以用于评价钻井液处理剂单剂或钻井液滤液进入地层微孔隙后,对地层黏土矿物胶结强度的影响。

Claims

Description

Topics

Download Full PDF Version (Non-Commercial Use)

Patent Citations (0)

    Publication numberPublication dateAssigneeTitle

NO-Patent Citations (0)

    Title

Cited By (0)

    Publication numberPublication dateAssigneeTitle