Rupture-Resistant Filter Cake for Wellbore Strengthening

用于加固井筒的抗破裂滤饼

• 批准号: 1834420
• 金额: --
• 依托单位: University of Cambridge
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2017
• 资助国家: 英国
• 起止时间: 2017 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-1834420
• 关键词: Rupture; Resistant; Filter; Cake; Wellbore

Fluid losses usually occur through fractures caused by the drilling pro- cess. To avoid this phenomenon,a series of techniques has been developed to raise the integrity of the wellbore, stopping lost circulationand allow drilling with wellbore pressures in excess of the fracture gradient. These techniques are calledwellbore strengthening. A typical example of wellbore strengthening mechanism consists of addingparticiples to the drilling mud. When a fracture occurs these participles enter in the fractures and obstructit forming a bridge. However, in the last years a new theoretical wellbore strengthening mechanism hasbeen individuated which consists in the formation of a filter cake, which builds up on the wellbore wallsbecause the fluid pressure in the pore space in a permeable formation is lower than the boreholepressure.This research will involve a combination of laboratory experiments and numerical analysis of the efficiencyof the filter cake in prevent fractures in the rock formation and their propagation. A parametric study willbe con- ducted to achieve specific filter cake properties (e.g. permeability, thickness and strength), whichincreases the fracture gradient in the rock formation and consequently minimizes the fluid lossesduring the drilling process.

流体损失通常是通过钻孔引起的裂缝而发生的。为了避免这种现象，已经开发了一系列技术来提高井眼的完整性，从而阻止循环失去的循环，并允许钻孔，井眼压力超过断裂梯度。这些技术被称为加强。井孔加强机制的一个典型例子包括在钻泥中添加参数。当骨折发生时，这些分词会进入裂缝中，并阻塞形成桥梁。 However, in the last years a new theoretical wellbore strengthening mechanism hasbeen individuated which consists in the formation of a filter cake, which builds up on the wellbore wallsbecause the fluid pressure in the pore space in a permeable formation is lower than the boreholepressure.This research will involve a combination of laboratory experiments and numerical analysis of the efficiencyof the filter cake in prevent fractures in the rock formation and their传播。一项参数研究将构成以实现特定的滤饼特性（例如渗透性，厚度和强度），从而使岩石形成中的断裂梯度增加，从而最大程度地减少了钻探过程的流体损失。

项目成果

Effects of filtration process variables on filter cake properties and formation

过滤工艺变量对滤饼性质和形成的影响

• DOI: 10.17863/cam.91094
• 发表时间: 2021
• 作者: Sorrentino G

Experimental investigation of filter cake deposition under cross-flow and static filtration conditions

错流和静态过滤条件下滤饼沉积的实验研究

• DOI: 10.1016/j.ces.2023.119417
• 发表时间: 2024
• 期刊: Chemical Engineering Science
• 影响因子: 4.7
• 作者: Sorrentino G