A new rheological approach helps formulation of gas impermeable cement slurries

Calloni, Giuseppe; D’Antona, Paolo; Moroni, Nevio

doi:10.1016/s0008-8846(98)00206-3

Cited by 4 publications

(2 citation statements)

References 7 publications

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“…When the cement looses water under pressurized conditions, the hydrostatic head of the cement decreases, and gas migration (Calloni et al 1999) and other phenomena may be expected. Laboratory experiments for fluid loss revealed that CMC alone cannot be an FLC agent in cement, and even it disrupts the effects of other FLC agents.…”

Section: Fluid Lossmentioning

confidence: 99%

Characteristics of Oilwell Cement Slurry Using CMC

Roshan

Asef²

2010

SPE Drilling &Amp; Completion

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The effects of carboxymethylcellulose (CMC) polymer with some other additives on Class G cement were investigated to design a slurry for a field in the south of Iran subject to tectonically induced horizontal in-situ stress. For a number of alternative slurries, characteristics such as compressive strength, permeability, free water, and fluid loss were examined. Fundamental theoretical studies and laboratory experiments were conducted using a system-based approach, endeavoring to minimize undesired properties progressively. The result was a cement slurry with specifications of early and high compressive strength, low permeability, suitable rheological properties, and a wide range of thickening time and suitable slurry for this case. Accordingly, the major contributions of this research lie in two aspects. First, a new package of additives is introduced to be used in similar cases in the oilwell-drilling industry. Second, a systematic experimental/theoretical approach for optimization of cement slurry in accordance with functional requirements is documented.

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Section: Fluid Lossmentioning

confidence: 99%

Characteristics of Oilwell Cement Slurry Using CMC

Roshan

Asef²

2010

SPE Drilling &Amp; Completion

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“…This type of definition of gelation time is not new. Calloni et al defined and used the time, at which the storage modulus reaches 10 4 Pa, as the gelation time in their work [15]. For practical reasons, the time at which storage modulus reaches 1000 Pa is defined as the gelation rate and denoted as t 1000 .…”

Section: Effect Of Silica and Sulfuric Acid Content On Gelation Ratementioning

confidence: 99%

Rheological characterization and optimization of gelled electrolyte for sealed lead–acid batteries by small amplitude dynamic oscillation measurement

Park

Yang

et al. 2005

Journal of Non-Crystalline Solids

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Cementing Abnormally Over-pressurized Formations in Saudi Arabia

Al-Dossary

Jennings

2012

All Days

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Cementing is one of important and crucial issues in oil field especially for high pressure and gas bearing formations. It is difficult to achieve a good zonal isolation in such formation types where pressure is abnormal and formation fluid contains corrosive fluids and gases. A common problem associated with highly over pressurized zones is cross flow after cementing. Fluid flow from an over pressured zone to a low pressure, high permeability zone can lead to deteriorating the existing production hardware. Work over operations that attempt to repair cement voids including perforation, squeezing and use of casing patches or scab liners are not recommended as they do not provide long lasting results. In one of onshore fields in Saudi Arabia there is a persistent problem related to cementing at high pressure zones. Recently, communication between A (abnormally over pressurized zone) and B (low pressure zone) formations is occurring due to long term sea water injection with increasing frequency, and has resulted in production interruption in several wells. This paper addresses the problems through investigating field practices including drilling, cementing, and completion. It also reviews the field reports and cased hole logs. A three-month study was conducted to evaluate the effects of formation-A water on cement, where the cement was exposed to formation-A water under down hole conditions. The tests for permeability, mechanical properties TGA and EDXRF are presented, in addition to discussions of some of the preliminary findings.

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A new rheological approach helps formulation of gas impermeable cement slurries

Cited by 4 publications

References 7 publications

Characteristics of Oilwell Cement Slurry Using CMC

Characteristics of Oilwell Cement Slurry Using CMC

Rheological characterization and optimization of gelled electrolyte for sealed lead–acid batteries by small amplitude dynamic oscillation measurement

Cementing Abnormally Over-pressurized Formations in Saudi Arabia

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