PHPA mud - Schlumberger Oilfield Glossary
A class of water muds that use partially-hydrolyzed polyacrylamide (PHPA) as a functional additive, either to control wellbore shales or to extend bentonite clay in a low-solids mud.As a shale-control mud, PHPA is believed to seal microfractures and coat shale surfaces with a film that retards dispersion and disintegration. KCl is used as a shale inhibitor in most PHPA mud designs.
This chapter deals with compositions for drilling muds and special chemicals used for drilling muds. Drilling fluids are mixtures of natural and synthetic chemical compounds used to cool and lubricate the drill bit, clean the hole bottom, carry cuttings to the surface, control formation pressures, and improve the function of the drill string and tools in the hole.
Field Applications of PHPA Muds - OnePetro
Milestones in this field include the development of low-solids polymer-extended muds, xanthan gum, and PHPA muds. The largest historical application of these muds has been in areas where the drilling rate is slow and some shale inhibition is required, such as the Rocky Mountains of western Canada and the North American midcontinent area.
Second, they are less solids-tolerant than dispersed or lime-based systems. Consequently, these muds often have proved uneconomical for drilling geologically young and highly dispersive shales or for drilling with high mud weights (greater than 14 lbm/gal [greater than 1700 kg/m3]). Continue reading “Field Applications of PHPA Muds”
Oil and Drilling Fluid PHPA Polyacrylamide for Bahrain
PHPA mud Schlumberger Oilfield Glossary. A class of water muds that use partially-hydrolyzed polyacrylamide (PHPA) as a functional additive, either to control wellbore shales or to extend bentonite clay in a low-solids mud.As a shale-control mud, PHPA is believed to seal microfractures and coat shale surfaces with a film that retards dispersion and disintegration.
cuttings handling system for waste mud disposal Use of traditional cuttings handling systems based on washing the cuttings. By cleaning the cuttings, the oil content in the cuttings can be brought down to approximately 100g oil content per. kg drilled cuttings, which is the average allowable discharge of oil per. well.
low-solids mud - Schlumberger Oilfield Glossary
A mud that has fewer solids than conventional clay-based muds of the same density and similar use.Low-solids mud design and maintenance is accomplished primarily by substituting one or more polymers for the ordinary bentonite clay. Viscosity can be obtained either entirely by polymers or by using a premium quality (nontreated) bentonite along with the appropriate extender polymer.
1 Environmental Drilling & Completion Fluids Directory The 2011 Environmental Drilling and Completions Fluids Directory appearing on the following pages lists industry fluid manufacturers and their individual products. The directory is differentiated into 15 sections based on type of fluid. Fifty-two participating companies and distributors are listed in the directory.
ONGC - Drilling Operation Practices Manual.-2007 - PDF
ONGC - Drilling Operation Practices Manual.-2007 . Home ; ONGC - Drilling Operation Practices Manual.-2007
DRILLING OPERATION PRACTICES MANUALOIL AND NATURAL GAS CORPORATION LIMITED INSTITUTE OF DRILLING TECHNOLOGY DEHRADUN, INDIA FOR INTERNAL CIRCULATION ONLY First Edition January 2007 Published by V.K.Jain Head-IDT Institute of Drilling Technology Oil and Natural Gas Corporation Ltd. Kaulagarh Road, Dehradun-248195, INDIA Preparation Team A.B.Sharma Rajeev Dhupar R.P.Patel D.Das Gupta A.K.Joshi
VISCOSITY REDUCER FOR WATER-BASED MUDS - Patent application
Patent application title: VISCOSITY REDUCER FOR WATER-BASED MUDS Inventors: John W. Chapman (Stonehaven, GB) Assignees: M-I DRILLING FLUIDS U.K. LIMITED IPC8 Class: AE21B4900FI USPC Class: 1662525 Class name: With indicating, testing, measuring or locating including production of earth fluid by driving fluid permeability or viscosity Publication date: 2011-02-24
First published 2008 Printed in the United Kingdom at the University Press, Cambridge A catalogue record for this publication is available from the British Library Library of Congress Cataloguing in Publication data Aquatic ecosystems : trends and global prospects / edited by Nicholas V. C. Polunin. p.
- What percentage of water treatment systems use chlorine?
- For instance, in Canada, approximately 90 % of water treatment systems use chlorine for disinfection (Health Canada 1995; Health Canada 2008). There is no doubt that chlorine is an effective disinfectant against most microorganisms and it provides protection in the distribution network.
- What is chlorine used for in water treatment?
- Chlorine is widely used for the treatment of drinking water (Gopal et al. 2007). For instance, in Canada, approximately 90 % of water treatment systems use chlorine for disinfection (Health Canada 1995; Health Canada 2008).
- Why is chlorine used as a post-treatment?
- Chlorine is currently used as post-treatment to maintain a residual concentration of oxidant in the drinking water network and to protect it against microbial recontamination (remnant effect) (Acero et al. 2010).
- Is chlorine a disinfection by-product?
- Chlorine is one of the oxidizing agents widely used around the world in water treatment . Disinfection by-products are formed when chlorine reacts with natural organic matter. Due to their adverse effect on human health, these disinfection by-products have received a great of concern.
