Variance in Environmental Legislation. Cause and Effect on Drilling Fluid Research and Use

Jachnik, R.P.

doi:10.2118/28740-ms

International Petroleum Conference and Exhibition of Mexico 1994

DOI: 10.2118/28740-ms

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Variance in Environmental Legislation. Cause and Effect on Drilling Fluid Research and Use

R.P. Jachnik

Abstract: WS,.6. TM P9W.ss Prqam,0,D,,,s",.uM .,.IM SPE ln!srna!lonPmJmbnf,r en&-& E"iW,lon ofM,,;co held 1.Veraawz, Mexico, IC-,2&Obw,5% Abstract Drilling Fluids" are presently 'b"dergoing a petiod if pronounced change. 'A significant proportion of new developments me due TO legislation. adopted .within the last ten to fifteen years-"by the Paris Commission (Parcom) involving the Nocth Sea countries, and The UnitedStates Environmental Protection Agen$y (EPA}. The environmental rules _{nd laws passed by countries that a… Show more

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Cited by 2 publications

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Biodegradable Invert Oil Emulsion Drilling Fluids For Offshore Operations: A Comprehensive Laboratory Evaluation and Comparison

Xiao¹,

Piatti²

1995

International Meeting on Petroleum Engineering

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SPE Members Abstract Synthetic-based mud (SBMs) proposed to substitute the toxic mineral oil based muds need to be fully investigated and compared on the basis of both performance and environmental acceptability. Esters, polyalphaolefins, ethers and alkyl-beazenes are the biodegradable fluids candidates to replace mineral oil and solve the critical problem of disposal of the drilled oily cuttings into the marine environment without the need of costly washing processes or transport to onshore disposal sites. This paper describes the experimental procedures and the results of the tests and analyses performed on different pseudo-oil based mud systems: stability to contaminants, HTHP rheology, lubricity, effect on cement slurry and ecotoxicity characteristics are evaluated and compared. The study includes the investigation of the quantity of pseudo-oil retained on cuttings by the tested mud formulations. Introduction SBMs are water in oil emulsions proposed to replace the diesel and mineral oil based muds (OBMs) to meet the targets imposed by the legislations concerning the defence of the marine environment which limit or prohibit from discharging overboard wastes containing mineral oil and substances with similar toxicity. These new mud formulations are obtained by dispersing brine into the synthetic oil; afterwards, the emulsion is stabilized, viscosified and weighed with the same kinds of additives used in the conventional OBM. Mainly, the innovation consists in the marine acceptability of the synthetic oils which appear adequate to most of the present regulations. The ecotoxicity requirements for the synthetics are dictated by the regulations but the physical properties and characteristics are imposed by the purpose of their use as the oil phase in the inverted emulsion drilling fluids. P. 553

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Biodegradable Invert Oil Emulsion Drilling Fluids For Offshore Operations: A Comprehensive Laboratory Evaluation and Comparison

Xiao¹,

Piatti²

1995

International Meeting on Petroleum Engineering

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A New High-Temperature Oil-Based Drilling Fluid

Mas

Tapin

Marquez

et al. 1999

Latin American and Caribbean Petroleum Engineering Conference

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This paper presents the laboratory development and a field trial of a novel 100% oil base drilling fluid system. In response to the need for a competitive high temperature inhibitive system, lab testing found an oil soluble polymer that imparts high temperature high pressure fluid loss control in a mud system with stable rheology and low formation damage. The polymeric additive is the basis for the 100% oil system, which also has an application in standard invert emulsion systems. The 100% oil system is designed to use mineral or diesel oil as the base. The attributes of the system include inherent inhibition and lubricity from the base oil, a mud weight range of 7.0–18.0 ppg, minimal formation damage, resistance to contamination and maintenance of the HPHT filtration control and rheology during high temperature high pressure applications. Laboratory testing has shown the fluid is temperature stable to 400 °F with diesel or low toxicity mineral oil as the base. This system has been field tested on two wells in Eastern Venezuela. One test was a 6,353', 8 ½" directional interval and the other a 1,053', 5 7/8" horizontal section drilled in near balance conditions with the fluid being nitrogenated to achieve the desired ECD. Both wells were drilled successfully and one well is discussed in this report. This fluid has a wide range of applications evidenced by the documented properties from the lab and the field tests. This paper covers the system formulations, properties, formation damage tests, and the results from the field test.

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Variance in Environmental Legislation. Cause and Effect on Drilling Fluid Research and Use

Cited by 2 publications

References 35 publications

Biodegradable Invert Oil Emulsion Drilling Fluids For Offshore Operations: A Comprehensive Laboratory Evaluation and Comparison

Biodegradable Invert Oil Emulsion Drilling Fluids For Offshore Operations: A Comprehensive Laboratory Evaluation and Comparison

A New High-Temperature Oil-Based Drilling Fluid

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