Particulate Invasion From Drilling Fluids

Bailey, L.; Boek, Edo S.; Jacques, Simon D. M.; Boassen, Tony; Selle, Olav Martin; Argillier, Jean-François; Longeron, D.

doi:10.2118/54762-ms

Cited by 38 publications

(25 citation statements)

References 11 publications

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“…However, depending on their droplet sizes, emulsions therein can invade reservoir rock and plug pores/pore throats, resulting in diminished hydrocarbon production [7][8][9]; moreover, surfactants which are added for generating emulsions can be adsorbed on rock surface and alter the wettability, which may also cause formation damage [7,10]. Besides the emulsions, suspended solids in the inverted emulsion, which is added for hindering leak-off, may also plug pores/pore throats; and this can make the formation damage even worse [8,11]. Furthermore, drilling fluid may also affect the quality of cementation [12,13] or hydrocarbon production through multiphase flow [14].…”

Section: Introductionmentioning

confidence: 99%

Formation Damage due to Drilling and Fracturing Fluids and Its Solution for Tight Naturally Fractured Sandstone Reservoirs

Liang

Yao

et al. 2017

Geofluids

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Drilling and fracturing fluids can interact with reservoir rock and cause formation damage that impedes hydrocarbon production. Tight sandstone reservoir with well-developed natural fractures has a complex pore structure where pores and pore throats have a wide range of diameters; formation damage in such type of reservoir can be complicated and severe. Reservoir rock samples with a wide range of fracture widths are tested through a multistep coreflood platform, where formation damage caused by the drilling and/or fracturing fluid is quantitatively evaluated and systematically studied. To further mitigate this damage, an acidic treating fluid is screened and evaluated using the same coreflood platform. Experimental results indicate that the drilling fluid causes the major damage, and the chosen treating fluid can enhance rock permeability both effectively and efficiently at least at the room temperature with the overburden pressure.

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Section: Introductionmentioning

confidence: 99%

Formation Damage due to Drilling and Fracturing Fluids and Its Solution for Tight Naturally Fractured Sandstone Reservoirs

Liang

Yao

et al. 2017

Geofluids

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“…The filtration models for monodisperse suspension are confirmed by many experimental data [11,12]. However, there are laboratory studies, the results of which can not be explained within the framework of this model [13].…”

Section: Introductionmentioning

confidence: 73%

Calculation of filtration of polydisperse suspension in a porous medium

Кузьмина

Osipov

2016

MATEC Web Conf.

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Abstract. The problem of filtering the suspension in a porous medium is considered. The proposed model for the transport of particles of different sizes is a generalization of deep bed filtration model for a monodisperse suspension with size-exclusion particle capture mechanism. Exact and asymptotic solutions are constructed at the filter inlet and on the concentration front of the suspended and retained particles. Numerical calculation for a suspension with 2-size particles shows that the distribution of deposit in the filter depends on the particle size.

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“…The invading particles, which are suspended in the drilling fluid, tend to plug pore throats and cause formation damage. To minimize formation damage, properly sized bridging material should be large enough not to invade the formation, and it should form an effective filter cake to prevent solids and mud-filtrate invasion (Bailey et al 1999). Zain et al (2001) developed a model to show that solids particles with smaller diameter than pore-throat size will enter the rock and reduce permeability.…”

Section: Introductionmentioning

confidence: 99%

Impact of Water-Based Drilling-In Fluids on Solids Invasion and Damage Characteristics

Al-Yami

Nasr‐El‐Din

Al-Shafei

et al. 2009

SPE Production &Amp; Operations

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Drilling the U-formation (shale and sandstone) in Saudi Arabia requires high drilling fluid density (±95 lbm/ft 3 ) to mechanically stabilize the shale and balance the reservoir pressure. Two fluids have been used to drill this formation: KCl/BaSO 4 /CaCO 3 and potassium formate/CaCO 3 drilling fluids. Barite is added in the first fluid with CaCO 3 to reduce the amount of solids needed to formulate the drillin fluid. However, BaSO 4 is insoluble in acids and requires chelating agents (DTPA) to remove it from the formation. Formate drill-in fluids with low solids content can be used, but they are expensive and corrosive at pH values less than 7-8. A third drilling fluid was developed recently by Al-Yami et al. (2007) to overcome some of the problems associated with these two systems.The objectives of this study are to determine solids invasion and damage characteristics for the three fluids. Coreflood tests were conducted using reservoir cores at bottomhole conditions. The cores were then examined by environmental-scanning-electronmicroscope (ESEM) analysis to investigate solids invasion, solids type, and location of damage.The three drilling fluids examined did damage the core plugs either through external filter cake, internal filter cake, or both. The ESEM images showed that the least damage occurred when Mn 3 O 4 water-based drill-in fluid was used. The highest damage was observed when barite/CaCO 3 mud was examined. This was followed by the potassium formate drill-in fluids. Kaolinite booklets were not attacked by the filtrate of the three drill-in fluids examined. The damage that was noted with potassium formate mud resulted from incompatibility of mud filtrate with the formation brine where potassium chloride crystals were noted in the cores.

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Particulate Invasion From Drilling Fluids

Abstract: This paper was prepared for presentation at the 1999 SPE European Formation Damage Conference held in The Hague, The Netherlands, 31 May–1 June 1999.

Cited by 38 publications

References 11 publications

Formation Damage due to Drilling and Fracturing Fluids and Its Solution for Tight Naturally Fractured Sandstone Reservoirs

Formation Damage due to Drilling and Fracturing Fluids and Its Solution for Tight Naturally Fractured Sandstone Reservoirs

Calculation of filtration of polydisperse suspension in a porous medium

Impact of Water-Based Drilling-In Fluids on Solids Invasion and Damage Characteristics

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