Lab 3 Essay

2491 Words Jul 4th, 2016 10 Pages
Lab 3—Effect of Bentonite and Barite on Filtration Properties
Drilling and Production Engineering Lab
PE 4331-008 Group D
February 26, 2016

Eric Ohman
David Farrier
Lucas Fischer
David Hernandez

Academic Integrity Statement
On my honor, I affirm that I have neither given nor received inappropriate aid in the completion of this exercise.
Name: Eric Ohman _ Date: 02/26/2016
Name: David Farrier _______Date: 02/26/2016
Name: Lucas Fischer ______ Date: 02/26/2016
Name: David Hernandez Date: 02/26/2016
Several experiments were conducted on various
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Drilling fluid system design is one of the most important tasks in any drilling operation. Drilling mud is a complex mixture of various additives. These additives are added in varying amounts throughout the drilling process of a well in order to control the rheological properties of the drilling fluid. These rheological properties of the mud determine how the drilling mud will perform in various formations and operating conditions. One important parameter to monitor throughout drilling operations is the filtration loss induced by a drilling mud.
In short, filtration loss is the process in which drilling mud filtrate enters a permeable formation. This process typically occurs in phases. First, “spurt” invasion occurs when the drill string exposes the fresh rock of the formation and the immediate surrounding mud proceeds to contact the walls and seep into the formation. As this occurs, the solids in the drilling mud begin to block pores and form a thin layer of mud, known as a mudcake. As this process continues, the mudcake serves as a filter and impedes further invasion of the whole mud into the formation and the only component to penetrate the mudcake and flow into the formation is known as filtrate (Zhan 2009). Thus, this is now considered filtrate invasion.
Excessive filtrate loss can create significant problems for the operator, not only in the drilling phase, but also the producing phase of the well’s life. If filtrate

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