scholarly journals Treatment of oily water containing different salts using surfactants

2016 ◽  
Vol 6 (2) ◽  
pp. 75-92
Author(s):  
Asst. Prof. Dr. Khalid M. Mousa ◽  
Chief Eng. Aqeel Sheikha Arafat
Keyword(s):  
Stainless Steel ◽  
Produced Water ◽  
Oil Fields ◽  
Oil Drilling ◽  
The North ◽  
Drilling Operations ◽  
Oily Water ◽  
Series Of Experiments

The oil drilling operations large quantities of contaminted water known as "produced water" .   The present study aims to treatment of produced water of the North Rumaila and Zubair oil fields,using stainless steel autoclave. A series of experiments were carried out at different conditions,temperature, pressure, acidity, revolution per minute (RPM) and salinity with and without flocculation.The result showed that 93% of oil was removed. An improvement was conducted when usingsurfactants.

An Assessment of Iceberg Loads for Operations in the North Barents Sea

2015 ◽  
Author(s):  
Ujjwal Raghuvanshi ◽  
Sören Ehlers
Keyword(s):  
Probability Density Function ◽  
Barents Sea ◽  
Mooring System ◽  
Systematic Mapping ◽  
Mooring Lines ◽  
Mapping Procedure ◽  
Oil Drilling ◽  
The North ◽  
Drilling Operations ◽  
Increasing Demand

With increasing demand for oil, drilling operations are soon going to start in the North Barents Sea. This area experiences iceberg occurrences. A systematic mapping of iceberg needs to be done to keep a tab on the iceberg location. Also, a study is required to assess the loads that come on to the mooring system in case of an iceberg – floater interaction. Therefore, this paper seeks to create a systematic mapping procedure for the occurrence of icebergs in the North Barents Sea using MATLAB. Further, from information on iceberg attributes and drift speed, the paper computes the iceberg mass and energy to define a probability density function of encountering an iceberg of a particular size. A scenario of an iceberg-floater interaction has been studied for different contact area geometries based on the kinetic energy model. Forces that develop on the mooring lines of a floater have been computed to aid in the designing of the mooring system of structures operating in the region fraught with the dangers of floating icebergs like the North Barents Sea.

scholarly journals Performance of an Advanced Intelligent Control Strategy in a Dynamic Positioning (DP) System Applied to a Semisubmersible Drilling Platform

2021 ◽  
Vol 9 (4) ◽  
pp. 399
Author(s):  
Mohamad Alremeihi ◽  
Rosemary Norman ◽  
Kayvan Pazouki ◽  
Arun Dev ◽  
Musa Bashir
Keyword(s):  
Oil And Gas ◽  
Weather Conditions ◽  
Dynamic Positioning ◽  
System Failures ◽  
Oil Drilling ◽  
System A ◽  
Advanced Control ◽  
Safety And Reliability ◽  
Drilling Operations ◽  
Shallow Seas

Oil drilling and extraction platforms are currently being used in many offshore areas around the world. Whilst those operating in shallow seas are secured to the seabed, for deeper water operations, Dynamic Positioning (DP) is essential for the platforms to maintain their position within a safe zone. Operating DP requires intelligent and reliable control systems. Nearly all DP accidents have been caused by a combination of technical and human failures; however, according to the International Marine Contractors Association (IMCA) DP Incidents Analysis, DP control and thruster system failures have been the leading causes of incidents over the last ten years. This paper will investigate potential operational improvements for DP system accuracy by adding a Predictive Neural Network (PNN) control algorithm in the thruster allocation along with a nonlinear Proportional Integral derivative (PID) motion control system. A DP system’s performance on a drilling platform in oil and gas deep-water fields and subject to real weather conditions is simulated with these advanced control methods. The techniques are developed for enhancing the safety and reliability of DP operations to improve the positioning accuracy, which may allow faster response to a critical situation during DP drilling operations. The semisubmersible drilling platform’s simulation results using the PNN strategy show improved control of the platform’s positioning.

scholarly journals A new method for correcting temperature log profiles in low-enthalpy plays

2020 ◽  
Vol 8 (1) ◽  
Author(s):  
Sandra Schumacher ◽  
Inga Moeck
Keyword(s):  
Input Parameter ◽  
New Method ◽  
Geothermal Resources ◽  
The North ◽  
Deep Wells ◽  
Thermal Disturbance ◽  
Drilling Operations ◽  
Crucial Information ◽  
Well Data ◽  
Drilling Time

Abstract Temperature logs recorded shortly after drilling operations can be the only temperature information from deep wells. However, these measurements are still influenced by the thermal disturbance caused by drilling and therefore do not represent true rock temperatures. The magnitude of the thermal disturbance is dependent on many factors such as drilling time, logging procedure or mud temperature. However, often old well reports lack this crucial information so that conventional corrections on temperature logs cannot be performed. This impedes the re-evaluation of well data for new exploration purposes, e.g. for geothermal resources. This study presents a new method to correct log temperatures in low-enthalpy play types which only requires a knowledge of the final depth of the well as an input parameter. The method was developed and verified using existing well data from an intracratonic sedimentary basin, the eastern part of the North German Basin. It can be transferred to other basins with little or no adjustment.

Managing Sulphate Reducing Bacteria (SRB) Problem Associated With Produced Water In One Of The Oil Fields Of Oil India Limited (Oil) - A Case Study

2010 ◽  
Author(s):  
Mool Chand Nihalani ◽  
S. Verma ◽  
J. Kumar ◽  
H. Dubey ◽  
Nripendra Kumar Bharali ◽  
...  
Keyword(s):  
Produced Water ◽  
Oil Fields ◽  
Sulphate Reducing Bacteria ◽  
Reducing Bacteria

scholarly journals Abnormal Pressure Distribution of Tertiary age formations in Middle & South Iraqi Oil Fields

2021 ◽  
Vol 7 (4) ◽  
pp. 46-63
Author(s):  
Dr. Faleh H. M. Almahdawi ◽  
Dr. Kareem A. Alwan ◽  
Ahmed K. H. Alhusseini
Keyword(s):  
Hydrostatic Pressure ◽  
Pressure Distribution ◽  
Oil Fields ◽  
Formation Pressure ◽  
Abnormal Pressure ◽  
Drilling Operations ◽  
South Of Iraq ◽  
Abnormal Formation Pressure ◽  
Formation Pore Pressure ◽  
Pore Pressure Gradient

Prediction of formation pore pressure gradient is a very important factor in designingdrilling well program and it help to avoid many problems during drilling operations such as lostcirculation, kick, blowout and other problems.In this study, abnormal formation pressure is classified into two types; abnormal highpressure (HP) and abnormal low pressure (LP), therefore any pressure that is either above orbelow the hydrostatic pressure is referred to as an abnormal formation pressure.This study concerns with abnormal formation pressure distribution and their effect ondrilling operations in middle & south Iraqi oil fields. Abnormal formation pressure maps aredrawn depending upon drilling evidence and problems.Three formations are considered as abnormal formations in the region of study, theseformations geologically existed in Tertiary age and they from shallower to deeper are: LowerFars, Dammam and Umm Er Radhuma, Formations. The maps of this study referred to eitherhigh formations pressure such as (Lower Fars and Umm Er Radhuma) or the low formationspressure such as (Dammam) in middle and south of Iraq. Finally these maps also suggested andshowed the area, where no field is drill until now, which may behave as high, low and normalformation pressure for every formation understudy.

Conversaziones, 1971

1971 ◽  
Vol 26 (2) ◽  
pp. 125-133
Keyword(s):  
North Sea ◽  
Oil Fields ◽  
Scale Model ◽  
British Petroleum ◽  
The North ◽  
Company Limited ◽  
The North Sea ◽  
Seismic Sections ◽  
Petroleum Company ◽  
Gas Fields

CONVERSAZIONES were held this year on 6 May and 24 June. At the first conversazione twenty-four exhibits and a film were shown. Dr P. E. Kent, F.R.S., and Mr P. J. Walmsley of The British Petroleum Company Limited arranged an exhibit demonstrating the latest progress in the exploration for hydrocarbons in the North Sea. The established gas fields and the recently discovered oil fields were shown on maps together with sections which illustrated their structure. Seismic sections and geological interpretations were exhibited to show the type of information being obtained in the North Sea and the structural complexities which arise. A scale model of one of the semi-submersible drilling outfits used in North Sea exploration was on display together with a sample of British North Sea oil.

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