drilling fluid Articles

  • How to economically evaluate a drilling fluid plant? A systematic approach

    As the results of government initiative to increase production, large number of wells are planned to be drilled in the next few years. As a consequence of this, huge volumes of drilling fluid are dumped or disposed into land. To maximise savings of drilling fluid, this study aimed to investigate if it is economically viable to set up a drilling fluid plant. This study provides consistent and ...


    By Inderscience Publishers

  • Managing Drilling Fluids

    Managing drilling fluids is not a small task and is a very important part of the drilling project. The job of mixing drilling fluids is often given to the newest member of the drilling crew, and that works if that person realizes how important the job is. But the driller/owner needs to take an active interest in the drilling fluids program, which can be a profit driver if done correctly or a ...


    By CETCO

  • Plan for Success on Drilling Jobs

    A few years ago, I received a call from a contractor asking for help mitigating a situation with a governmental transport agency in regards to monitoring downhole pressures as they were drilling under a six-lane highway crossing. They were asked to provide details on the drilling fluid they were using and the expected annular pressure while drilling. In order to do this, one must look at the ...


    By CETCO

  • Experimental study of the effect of temperature on the flow behaviour of oil-based muds in Niger delta formation

    The behaviour of the drilling fluids under high temperature is extremely important for drilling deep wells. Most commercial oil-base drilling fluid systems have limitations such as reduced rheology and filtration control if the fluid is exposed to higher temperature for prolonged periods of time. Formulating a drilling fluid system that can adequately withstand drilling in a high temperature ...


    By Inderscience Publishers

  • Industry leading drilling fluid dewatering

    The drilling industry is regulated by a myriad of environmental regulations that protect our air, water, and land resources. As these regulations continue to evolve, so too must the technologies utilized by the drilling industry. Though lowering compliance costs is always a worthy initiative, incorporating technology that also enhances the drilling process by improving down-hole conditions and ...


    By Elgin Separation Solutions

  • Searching for the ‘Holy Grail’ of Drilling Fluids

    The Holy Grail is a sacred object … said to possess miraculous powers,” according to Wikipedia. While preparing to write this month’s article, I must confess to some serious writers block. I was sitting at the computer with a few ideas, but no really firm direction, when all of the sudden it popped into my head (well really on my screen). I got an email from a customer asking, ...


    By CETCO

  • National Driller - Searching for the Holy Grail of Drilling Fluids

    “The Holy Grail is a sacred object … said to possess miraculous powers” (Wikipedia.org). While preparing to write this month’s article, I must confess to some serious writer’s block. I was sitting at the computer with a few ideas, but no real firm direction, when all of the sudden, it popped into my head (well, really, on my screen). I got an email from a customer, ...


    By CETCO

  • Frequently asked Questions - Part 2: Stabilizing the Hole

    One of the most important functions of a drilling fluid is to stabilize and maintain a borehole opening. Borehole stability in coarse soils starts with creating an impermeable barrier between the soil and the drilling fluid or slurry via the filter cake (or polymer gel membrane for non-rotary mud drilling such as foundation drilling). Then, positive hydrostatic pressure from having the hole full ...


    By CETCO

  • Centrifuge Technology in Drilling Fluid Recycling

    Drilling fluid additives and the water that contains them are an essential part and expense of successfully completing a horizontal directional drilling (HDD) installation, and the longer the bore and larger the product being installed, the more drilling fluids cost. Therefore, it makes economic sense to recycle drilling fluids by removing cuttings and recirculating the cleaned ...


    By Elgin Separation Solutions

  • Oil Drilling Grade Carboxymethyl Cellulose & PAC

    What is polyanionic cellulose? Description of Oil Drilling Grade CMC & PAC CMC & PAC( polyanionic cellulose pac) can be used as fluid loss reducer or viscosifier in drilling fluids. The function of CMC is to reduce the fluid loss as much as possible through forming low permeability, flexible, thin and compact ...

  • Oil Drilling Grade Carboxymethyl Cellulose & PAC 2019

    Description of Oil Drilling Grade CMC & PAC     CMC & PAC can be used as fluid loss reducer or viscosifier in drilling fluids. The function of CMC is to reduce the fluid loss as much as possible through forming low permeability, flexible, thin and compact filtration cake on borehole wall. Used as thickening agent, suspension agent and plugging agent.   ...

  • Principles of Solids Control

    Although the use of drilling fluids within the HDD / trenchless industry is still relatively new, recent trends suggest that this standard is shifting as solids control is one of the most important phases in the drilling process. This shift is due to a growing awareness that drilling fluid maintenance and disposal can become exponential problems as they are both harmful to the environment and ...


    By Elgin Separation Solutions

  • Principles of HDD Solids Control & Buyers Guide

    Relative to the use of drilling fluids within the oil & gas industry, the use of drilling fluids within the horizontal directional drilling (“HDD”) industry, is new.   As the use of HDD technology did not become mainstream until the 1980’s, it took another decade before drillers started to consider the use of basic drilling fluids.  Even today, ...


    By Elgin Separation Solutions

  • Avoiding Common Mud Mixing Mistakes

    This January will mark 40 years of experience of working with drilling fluids and drilling fluids recycling equipment for this author, and yours truly could write a book on drilling fluids mixing errors made by both vertical and horizontal directional drilling contractors. Drilling contractors should expect a return on their investment in products such as soda ash, bentonite, polymers and ...


    By CETCO

  • The Application of Waste Solids Management Vertical Cuttings Dryers as an integral element of a successful Solids Control System

    In Elgin’s last White Paper, “Common Challenges Relative to the Use of Decanter Centrifuges for Barite Recovery in the Oil & Gas Industry,” a detailed discussion was offered about the complexities involved in achieving effective solids control when deploying a dual-centrifuge “barite ...


    By Elgin Separation Solutions

  • The “Straight Skinny” on bentonite-based drilling muds & their standard practice use in the horizontal remediation well industry

    Let’s make our point up front: 1) bentonite-based drilling fluid is NOT bad for horizontal remediation well (HRW) projects; 2) it does not damage the formation; 3) it is a naturally occurring clay material that is mined; and 4) it does flush easily/adequately during well development. Most remediation professionals have designed and/or installed vertical wells at one time or another ...

  • Help Your Spoils Pass the Paint Filter Liquid Test

    One of the most important functions of a drilling fluid is to stabilize and maintain a borehole opening. Borehole stability in coarse soils starts with creating an impermeable barrier between the soil and the drilling fluid or slurry via the filter cake (or polymer gel membrane for non-rotary mud drilling such as foundation drilling). Then, positive hydrostatic pressure from having the hole full ...


    By CETCO

  • Common challenges relative to the use of Decanter Centrifuges for barite recovery in the oil & gas industry

    When centrifuges are properly deployed, they can have dramatic effects on drilling performance. In fact, without them, many of the advances made in drilling would not have been considered achievable. Classically, we believe that centrifuges can achieve two common goals: Reduce the content of drilled fines, specifically colloidal solids, and Perform barite recovery in order to reduce ...


    By Elgin Separation Solutions

  • Removal of hydrogen sulfide by zinc oxide nanoparticles in drilling fluid

    Hydrogen sulfide is a very dangerous, toxic and corrosive gas. It can diffuse into drilling fluid from formations during drilling of gas and oil wells. Hydrogen sulfide should be removed from this fluid to reduce the environmental pollution, protect the health of drilling workers and prevent corrosion of pipelines and ...

  • Case study - drilling operations

    Location: New Zeland Year: 2010 Working contest The pond is on a drilling rig site. The rig is used for Geo-thermal power exploration. The Problem Pumping heavy slurry: bentonite, geo-thermal minerals, drilling fluid, sand, pumice. Performance of sucker trucks where unsatisfactory. ...


    By Dragflow North America

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