Welcome To UTPedia

We would like to introduce you, the new knowledge repository product called UTPedia. The UTP Electronic and Digital Intellectual Asset. It stores digitized version of thesis, dissertation, final year project reports and past year examination questions.

Browse content of UTPedia using Year, Subject, Department and Author and Search for required document using Searching facilities included in UTPedia. UTPedia with full text are accessible for all registered users, whereas only the physical information and metadata can be retrieved by public users. UTPedia collaborating and connecting peoples with university’s intellectual works from anywhere.

Disclaimer - Universiti Teknologi PETRONAS shall not be liable for any loss or damage caused by the usage of any information obtained from this web site.Best viewed using Mozilla Firefox 3 or IE 7 with resolution 1024 x 768.

The toxicity effects of water based mud with different additives on aquatic life

Syakir Aslam Bin Mohamad Poad, Syakir Aslam (2012) The toxicity effects of water based mud with different additives on aquatic life. Universiti Teknologi Petronas. (Unpublished)

[img]
Preview
PDF
Download (1611Kb) | Preview

Abstract

Water based muds (WBMs) are by far the most commonly used muds, both onshore and offshore. It can be provided with various additives, such as fluid loss control agents, corrosion inhibitors, weighting materials, and viscosifiers, to develop the key properties of the mud to meet some functional requirements. Even though the overall environmental impact of mud additives in WBMs is minimal, it can contaminate and harm the marine life that inhabits the surrounding waters where drilling operation take place. A state environmental agency designated by EPA, regulates discharges of drilling muds and cuttings to state and federal waters of the U.S. Current National Pollutant Discharge Elimination System (NPDES) permits allow discharge of WBM and cuttings to federal, but not state, waters if they meet restrictions in the Effluent Limitation Guidelines (ELG) 1. Drilling and operating companies nowadays have been forced to review their mud additives selection guidelines to control the use of non-environmentally friendly and toxic mud additives in the formulation of WBMs. It is important to take account of environmental factors to eliminate any environmental impact. Therefore, experiments were conducted by using several of WBMs additives which are Barite, Potassium Chloride, Hydro Pac, CMC, Hydrozan and Guar Gum to determine their toxicity on aquatic life in which the test organisms for this research are Guppy fish and Neon Tetra fish. The procedure for toxicity test for this study follows the standard procedure recommended by US EPA. In this experiment the test organisms were exposed to the WBM that contain drilling fluid additives with three different concentrations of contaminants for 96 hours. The numbers of survived organisms at the observation time were recorded. From the results obtained, clearly there are no significant effects on aquatic life after being exposed to each drilling fluid additives. Thus the LC50 value for all additives that being tested is above 50000ppm. This means that all these additives are considered non-toxic and environmentally friendly.

Item Type: Final Year Project
Subject: T Technology > TC Hydraulic engineering. Ocean engineering
Divisions: Geoscience and Petroleum Engineering
Depositing User: Users 2053 not found.
Date Deposited: 07 Sep 2012 12:15
Last Modified: 25 Jan 2017 09:41
URI: http://utpedia.utp.edu.my/id/eprint/3371

Actions (login required)

View Item View Item

Document Downloads

More statistics for this item...