The Analysis of the Dynamic Filtration and Permeability Impairment Characteristics of Inhibited Water Based Muds

Peden, J.M.; Avalos, Margarita; Arthur, Kevin

doi:10.2523/10655-ms

Cited by 12 publications

(7 citation statements)

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“…The correlation ( r )zml te ::::. T 1': (10) models the data satisfactorily, with m' taking the values from 0.62 to 0.71, similar to m in (9) as expected. te thus varies inversely with wall shear, in our experiments between about 5 hours and 20 minutes.…”

Section: Transition Timescalesupporting

confidence: 71%

Dynamic Filtration of Bentonite Muds Under Different Flow Conditions

Fordham

Ladva

Baret

1988

Proceedings of SPE Annual Technical Conference and Exhibition

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The variation of key parameters describing t.he dynamic fluid loss behaviour of two wat.er-based drilling muds, barite-weighted and unweighted, has been systematically investigat.ed in an annular flow dynamic filtration cell designed to provide wellcontrolled laminar flows over a wall shear rate typical of those in the well bore during drilling.An axial section of the cell inner wall is formed from a 10 millidarcy ceramic filter. The permeability and low particle penetration decouples the cake filtration from formation invasion or formation damage effects. A variable annulus gap was designed to reveal possible Reynolds. number effects as well as the dominant wall shear rate effects.Numerous dynamic fluid loss histories at a filtration pressure of 280 p.s.i. (1.93 MPa) (typical duration 22 hours) show that the fluid loss can be described by three key parameters: one describing the early ('quasi-static') behaviour, a second describing the late ('dynamic') behaviour of near-constant fluid loss rate, and thirdly a timescale for the transition between these two regimes.The variation of these parameters with mud flow wall shear rates between 50 and 650 s-1 has been quant.ified empirically. The early behaviour is virtually independent of shear, but the timescale for transition to 'dynamic' behaviour decreases sharply with increasing shear rate from 5 hours to about ! hour. The final 'dynamic' fluid loss rate correlates approximately with the 0.6 power of the shear rate; other theoretically postulated variations are not supported. The irreversible deposition of mudcake under dynamic conditions reported by others has also been observed.The results have direct application to the modelling of fluid loss in drilling and in well completions. The quantitative laws obtained have also enabled some discrimination to be made between theoretical models for the fundamental mechanisms of mud particle deposition and erosion.

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Section: Transition Timescalesupporting

confidence: 71%

Dynamic Filtration of Bentonite Muds Under Different Flow Conditions

Fordham

Ladva

Baret

1988

Proceedings of SPE Annual Technical Conference and Exhibition

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“…Then it was placed on different tests to assess quality of the cake properties for that drilling fluid system (Outmans 1963;Ershaghi and Azari 1980;Hassen 1980;Peden et al 1982;Peden et al 1984;Jiao and Sharma 1993). The first occurs while fluid pumping is interrupted and the second occurs when the fluid is pumped through the well.…”

Section: Introductionmentioning

confidence: 99%

“…The microscopic structure and the chemical composition of filter cakes were addressed by several investigators (Kenneth 1980, Peden et al 1982, Hartmann et al 1988, Nasr-EL-Din et al 2007, Al-Yami et al 2008, Al Otaibi et al 2008, and Elkatatny et al 2011. Such information can improve filtration control additives that minimize formation damage and selection of an effective recipe for removing the filter cake.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Filter Cake Mineralogy in Extended Reach and Maximum Reservoir Contact Wells in Sandstone Reservoirs

Bageri

Al-Majed

Al-Mutairi

et al. 2013

SPE/IADC Drilling Conference

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Good knowledge of filter cake structure and composition leads to successful selection of drilling fluid that minimizes formations damage and selection of an effective and efficient recipe for removing the filter cake.This study focus on an aspect which was not fully covered in the literature: the chemical characteristics of filter cake formed along the horizontal well, from its heel to its toe. High pressure fluid loss tests were performed using real drilling fluid samples from the field which were collected during drilling horizontal section of a sandstone formation. The mineralogy of the external filter cake formed by fluid loss cell is determined using both Scanning Electron Microscopy (SEM) and X-Ray Diffraction (XRD).The results showed that for long horizontal sections, the composition of the filter cake was not constant from its heel to its toe since the small drilled cuttings or particles, that are not completely removed, were mixed with the drilling fluid during circulation and become an integral part of the fabric of the filter cake.

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“…Although high-permeability clean sandstones, i.e., not containing clays that can be dispersed and/or swollen, undergo more invasion than the low-permeability ones, they usually are not too severely damaged (40% or less permeability reduction) when their connate water is chemically compatible with the invading fluid [38]. Although high-permeability clean sandstones, i.e., not containing clays that can be dispersed and/or swollen, undergo more invasion than the low-permeability ones, they usually are not too severely damaged (40% or less permeability reduction) when their connate water is chemically compatible with the invading fluid [38].…”

Section: Internal Filter-cake Buildupmentioning

confidence: 99%