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Article
Publication date: 12 September 2008

Omar Almisned

Casing completion is an extremely important part of the process of drilling and completing an oil well. This paper aims to focus on measuring corrosivity caused by drilling

Abstract

Purpose

Casing completion is an extremely important part of the process of drilling and completing an oil well. This paper aims to focus on measuring corrosivity caused by drilling mud on casing materials using a simple method.

Design/methodology/approach

In this experimental study a simple method is used to determine the effect of drilling mud on the two widely used casing string materials in the oil industry, carbon steel and J‐55 alloy. The drilling mud was formulated using Saudi local clay deposits, where mud viscosity at different clay concentration was measured to show the effect of clay content on mud apparent viscosity, and select the best formulation. The average weight loss of each type of steel was measured to show the corrosion rates, caused by a drilling mud formulated using collected clay samples. Viscosity measurements are shown.

Findings

Corrosion in dynamic tests is higher than in static tests, and the Saudi clay muds were less corrosive on J‐55 alloy than on carbon steel.

Originality/value

The assessment method is a simple and fast way to predict maximum and minimum corrosion while drilling.

Details

Anti-Corrosion Methods and Materials, vol. 55 no. 5
Type: Research Article
ISSN: 0003-5599

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Article
Publication date: 1 June 2001

B. Onyekpe

Laboratory investigation of the effect of carbonate contaminant on the rheological properties of drilling mud based on Bingham plastic flow model was carried out. The…

Abstract

Laboratory investigation of the effect of carbonate contaminant on the rheological properties of drilling mud based on Bingham plastic flow model was carried out. The rheological properties investigated were yield point, plastic viscosity, initial gel strength and ten‐minute gel strength. Eight samples of the same mud were used in the investigation. Equipment used in studying the rheological properties was a direct‐indicating viscometer. The result of the investigation showed that carbonate contaminant in drilling mud adversely increases the yield point and gel strength. Marginal increase in the plastic viscosity of the mud was also observed. The mud flocculated as the amount of carbonate increased.

Details

Industrial Lubrication and Tribology, vol. 53 no. 3
Type: Research Article
ISSN: 0036-8792

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Article
Publication date: 27 March 2020

Min Ji, Shuhai Liu and Huaping Xiao

The purpose of this paper is to study the tribology behavior of steel–steel contact under the lubrication of water-based drilling mud with different oleic acid-filled…

Abstract

Purpose

The purpose of this paper is to study the tribology behavior of steel–steel contact under the lubrication of water-based drilling mud with different oleic acid-filled microcapsules as lubricant additives.

Design/methodology/approach

A ball-on-disc tribometer was used to evaluate the lubrication properties of the steel–steel contact. The wear tracks of the worn surfaces were observed by a scanning electron microscope.

Findings

Results show that the dependence of both friction and wear on the category of additives shares a consistent pattern. In contrast to oleic acid and empty microcapsules, oleic acid-filled microcapsules achieve the best tribological performance which is related to the lubricant effect of oleic acid and the isolation and rolling abilities of microcapsules.

Practical implications

This study provides a helpful method of encapsulated lubricant additives to prolong lubrication performance for steel–steel contact.

Originality/value

This study has applied microcapsules to improve the tribological properties of drilling mud.

Peer review

The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-08-2019-0320/

Details

Industrial Lubrication and Tribology, vol. 72 no. 7
Type: Research Article
ISSN: 0036-8792

Keywords

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Article
Publication date: 1 January 1992

Frederick Hayes‐Roth

Because much human knowledge consists of elementary fragments of know‐how, applying a significant amount of knowledge requires new ways to organize decision‐making…

Abstract

Because much human knowledge consists of elementary fragments of know‐how, applying a significant amount of knowledge requires new ways to organize decision‐making fragments into competent wholes. Knowledge systems collect these fragments in a knowledge base and then access the knowledge base to reason about each specific problem. As a consequence, knowledge systems differ from conventional programs in the way they're organized, the way they incorporate knowledge, the way they execute, and the impression they create through their interactions. Knowledge systems simulate expert human performance, and they present a humanlike facade to the user.

Details

Library Hi Tech, vol. 10 no. 1/2
Type: Research Article
ISSN: 0737-8831

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Article
Publication date: 1 June 1958

DURING October and November 1957 B.P. Exploration Co. Ltd. made a number of trials at their Egmanton oilfield in Nottinghamshire to compare the relative merits of…

Abstract

DURING October and November 1957 B.P. Exploration Co. Ltd. made a number of trials at their Egmanton oilfield in Nottinghamshire to compare the relative merits of turbodrilling and rotary drilling techniques. Although the details of these results are not of direct interest from a lubrication point of view the part played by the drilling fluid in these techniques is worthy of note.

Details

Industrial Lubrication and Tribology, vol. 10 no. 6
Type: Research Article
ISSN: 0036-8792

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Article
Publication date: 1 May 2002

M.J. Ayotamuno, A.J. Akor and T.J. Igho

The research assessed the development of petroleum drilling activities and its associated waste discharges in the Niger Delta environment of Nigeria. Field visits were…

Abstract

The research assessed the development of petroleum drilling activities and its associated waste discharges in the Niger Delta environment of Nigeria. Field visits were made to 18 wells in which petroleum drilling operation was in progress. Of this number, wastes samples were randomly collected from ten wells for data collation and laboratory analysis. Results show that petroleum drilling waste types in Nigeria include cuttings, mud/chemical, oil spills, cement slurry/dust, condemned pipes, filters, and machinery parts and even noise. Pretreatment of waste in hardly undertaken by the oil prospective companies before discharge into the surrounding environment. Total dissolved solid and oil/grease values as high as 3700mg l–1 and 1100 parts per million, respectively, were tested as effluent discharges around some of the wells studied. It was recommended that the Nigerian Government constitute a powerful environment monitoring body whose responsibility will be to ensure that the various multi‐national oil companies comply with petroleum laws and statutes of the country.

Details

Environmental Management and Health, vol. 13 no. 2
Type: Research Article
ISSN: 0956-6163

Keywords

Content available
Article
Publication date: 21 August 2007

Abstract

Details

Industrial Lubrication and Tribology, vol. 59 no. 5
Type: Research Article
ISSN: 0036-8792

Content available
Article
Publication date: 1 February 2002

Abstract

Details

Industrial Lubrication and Tribology, vol. 54 no. 1
Type: Research Article
ISSN: 0036-8792

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Article
Publication date: 20 April 2015

Esteban Della Nave and Eduardo Natalio Dvorkin

– The purpose of this paper is to present the development of a simulator of oil well drilling processes.

Abstract

Purpose

The purpose of this paper is to present the development of a simulator of oil well drilling processes.

Design/methodology/approach

The simulator incorporates the main variables that are used by drilling engineers in the definition of the drilling processes. The code is useful a priori, in the design of a drilling process, as a tool for comparing different design options and predicting their results and a posteriori of a failure to understand its genesis and therefore provide know-why to improve the drilling techniques.

Findings

The developed finite element simulator uses a co-rotational Bernoulli beam element, an explicit time integration scheme and an explicit contact algorithm. The numerical results show that the simulator is stable and provides consistent solutions.

Practical implications

During the drilling of oil wells, the fatigue damage and wear of the drilling column is of utmost concern. To determine the mechanical behavior of the drilling column standard simplified analyses are usually performed using commercially available codes; however, those standard analyses do not include a transient dynamic simulation of the process; hence, it is necessary to develop a specific tool for the detailed dynamic simulation of drilling processes.

Originality/value

A simulator able to perform a description of the drilling process in the time range will be an important contribution to the tools used by drilling engineers.

Details

Engineering Computations, vol. 32 no. 2
Type: Research Article
ISSN: 0264-4401

Keywords

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Article
Publication date: 28 October 2014

Zhouyang Lian, Dongsheng Chen, Wuji Wei, Yongzhang Zhou and Juncheng Jiang

– The purpose of this study was to investigate the reason of G105 coated drill-pipes suffering from washout after drilling for 70000–80000 m.

Abstract

Purpose

The purpose of this study was to investigate the reason of G105 coated drill-pipes suffering from washout after drilling for 70000–80000 m.

Design/methodology/approach

The microstructure, micromorphology and corrosion products near the washout were analyzed by metallurgical microscopy, SEM and EDS.

Findings

Results showed the metallographic microstructure of the material was typical tempered sorbite. No fatigue crack was observed. Drill-pipe washout was caused mainly by the inclusion of MnS in steel because of the excess S and by damaged coating, both of which induced pit nucleation and promoted the pitting corrosion process. The corrosion hole extended from the interior to the exterior, which resulted in the fracturing of the external drill-pipe surface under pressure.

Originality/value

This paper can give practical help to the selection of drill pipe materials in the future.

Details

Anti-Corrosion Methods and Materials, vol. 61 no. 6
Type: Research Article
ISSN: 0003-5599

Keywords

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