Investigating and Enhancing Mud Cake Reduction Using Smart Nano ClayBased WBM

Asif Zamir, N. A. Siddiqui
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引用次数: 10

Abstract

Mud cake is the solid particles deposited on the pores of the formation creating a form of barrier when the drilling fluid is forced against the formation under an applied pressure. The mud cake formed along the open hole formation may cause differential pipe sticking and increases torque and drag forces of the drill pipe. This causes drilling operator to stop drilling and perform frequent tripping or over pull to release the stuck pipe. This event may lead to Non-Productive Time (NPT) and increases the operational cost. The aim of this research is to investigate the relationship between Nano Clay based water based mud (WBM) with mud cake thickness and comparing it with the conventional clay based mud (WBM). In this research study, we could only managed to get nano clay between 90 nm to 100 nm. Mud cake thickness, filtrate volume and rheology of the drilling fluids parameters are studied. It was found that the mud cake thickness of Nano-WBM using Nano Clay is half compared to base mud using conventional clay. However, the filtrate collected and the rheological properties show an adverse impact of the drilling fluid performance.
智能纳米粘土基WBM对泥饼还原性能的研究与提高
泥浆饼是沉积在地层孔隙上的固体颗粒,当钻井液在施加压力下被迫与地层对抗时,会形成一种屏障。沿着裸眼地层形成的泥饼可能会造成差动钻杆卡钻,增加钻杆的扭矩和阻力。这导致钻井作业人员停止钻井,并进行频繁的起下钻或过拉以释放卡钻。该事件可能导致非生产时间(NPT),并增加运营成本。研究纳米粘土基水基泥浆(WBM)与泥饼厚度的关系,并与常规粘土基泥浆(WBM)进行比较。在这项研究中,我们只能得到90 nm到100 nm之间的纳米粘土。研究了泥饼厚度、滤液体积、钻井液流变性等参数。结果表明,采用纳米粘土制备的纳米基浆的泥饼厚度比采用常规粘土制备的基浆厚度减少了一半。然而,所收集的滤液和流变性能对钻井液性能产生不利影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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