Updated criterion to select particle size distribution of lost circulation materials for an effective fracture sealing

Alsaba, Mortadha; Dushaishi, Mohammed Al; Nygaard, Runar; Nes, Olav-Magnar; Saasen, Arild

doi:10.1016/j.petrol.2016.10.027

Cited by 85 publications

(20 citation statements)

References 10 publications

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“…D 10 > smallest pore throat Many authors have studied previously the effects of PSD to the sealing capabilities. The recent work was studied by Alsaba et al (2017) and Razavi et al (2016). Their work was focusing on the fracture plugging during the wellbore strengthening phenomenon.…”

Section: Introductionmentioning

confidence: 99%

Investigation of different environmental-friendly waste materials as lost circulation additive in drilling fluids

Idress

Hasan

2019

J Petrol Explor Prod Technol

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Drilling fluid is a very important component to ensure smooth drilling process. Drilling fluid is developed and produced with many additives to fulfill its functions. One of the additives is lost circulation materials (LCMs) that will help to minimize or prevent fluid loss into the formation. This study aims to develop new LCM from agro-waste materials which are orange peel and sunflower seed. The LCMs were prepared in three different sizes: fine, medium and coarse and also with different concentrations: 0.8%, 1.3%, 2.2%, 2.7% and 4%. The performance of the drilling fluid with newly developed LCM was tested in terms of rheological and filtration properties. The results were compared with the commercial LCM that has been used in the industry which is nut plug. The results showed that drilling fluid with finest size and high concentration yielded good filtration control. From these preliminaries result, two best sizes were chosen, combined, mixed and tested. The chosen sizes were fine and medium. This new combination of LCM gave even better results compared to the fine-sized and high-concentration LCM. It can be concluded that to ensure good filtration control, the LCM could be combined together since the combination of different sizes minimized the pores created in the mud cake hence helping to reduce the potential of loss circulation problem.

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Section: Introductionmentioning

confidence: 99%

Investigation of different environmental-friendly waste materials as lost circulation additive in drilling fluids

Idress

Hasan

2019

J Petrol Explor Prod Technol

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“…Many reports describe plugging materials with high-temperature resistance; these include mica, vermiculite, asbestos, and shell [14][15][16]. ere are many reports such as Alsaba et al [17], Guo et al [18], Li et al [19], Wang et al [20], Guo et al [21], Karcher et al [22], and others of other types of circulation material loss. ese include adhesive sealing material and consolidated sealing material that provide high-temperature resistance.…”

Section: Introductionmentioning

confidence: 99%

Laboratory Study on a New Composite Plugging Material with High Bearing Strength and High-Temperature Resistance

Lian

Xiong

et al. 2019

Journal of Chemistry

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The reservoir in the Central Tarim Basin is a typical high-pressure fracture-vuggy carbonate reservoir with high temperatures, which easily leads to drilling fluid losses and the high-temperature carbonate. The conventional lost circulation materials (LCMs) cannot meet the reservoir. To resolve this problem, a rigid particle with high-temperature resistance, high acid solubility, and high rigidity was developed, tested, and evaluated. According to bridge rules of 1/2–2/3 opening degree of formation fracture, the formulation experiments of GZD and other lost circulation materials were conducted and a novel composite lost circulation material (LCM) was completed. Lastly, we investigated the compatibility of LCM and mud in site though compatibility experiment, analyzed the plugging effect of the system for fracture and vuggy by laboratory static lost circulation simulation and evaluation and sand-bed plugging experiments, respectively. The results show that compared with the conventional rigid lost material, the value of high-temperature resistance is more and acid solubility is over 98%. Also, it can work well with other fiber materials (E), variable filling particles (F and G), and superfine filling particles (H) and form a novel plugging material, named MGY-I, whose temperature resistance value is more than 473.15 K, the bearing strength is over than 9 MPa, the mud filtrate invasion depth of sand bed made from coarse particles (10∼20 mesh) is only 3.0 cm within 30 minutes, and the invasion depth is less than 1 cm within 30 minutes when the sand bed is made from 80∼100 mesh. The optimal concentrations of rigid granule, lignin fiber, elastic particle, and superfine calcium carbonate are 8% (A : B : CD = 2 : 1 : 1), 0.5%, 6%, and 1%, respectively. And, the plugging function of “GZD-rigidity bridge and filling, fiber network and deformable filing” is better exerted on the formation fracture with a high loading capacity and a high-temperature resistance.

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“…Several alternatives are possible (and commercially available) to effectively place and divert stimulation fluids, and these can be grouped into two main categories: mechanical and chemical diversion (or the combination of both) (Alsaba et al 2017;Alshubbar et al 2018;Calcada et al 2015;Cohen et al 2010;Davoodi et al 2018;Droger et al 2014;Garagash et al 2019;Gomaa et al 2011;Kam et al 2007;Li et al 2018;Malik et al 2017;Sau et al 2015;Solares et al 2008;Thompson and Gdanski 1993;Wang et al 2015a, b;Zhang et al 2018). Mechanical diversion can be deployed for multistage stimulation completions.…”

Section: Introductionmentioning

confidence: 99%

“…As presented above, there are several types of diverting agents for stimulating carbonates relying either on temporary plugging or viscosity control mechanisms (Alsaba et al 2017;Alshubbar et al 2018;Asiri et al 2013;Bukovac et al 2012;Calcada et al 2015;Cohen et al 2010;Davoodi et al 2018;Detournay 2016;Droger et al 2014;Garrouch and Jennings 2017;Gomaa et al 2011;Kam et al 2007;Li et al 2018;Malik et al 2017;Osiptsov 2017;Solares et al 2008;Sau et al 2015;Thompson and Gdanski 1993;Wang et al 2015a, b;Yu 2015;Zhang et al 2018). Although these methods are often successful when applied during stimulation treatments, the industry still needs more reliable operational guidelines and a deeper understanding of the fundamental aspects of the diversion mechanism.…”

Section: Introductionmentioning

confidence: 99%

“…The key mechanism behind the diverting capability of fibers is their ability to flocculate and bridge when interacting with suspending fluids. Since the introduction of fiber-based techniques for well intervention and stimulation applications, several laboratory-scale experimental studies (Alsaba et al 2017;Alshubbar et al 2018;Calcada et al 2015;Cohen et al 2010;Li et al 2018;Sau et al 2015;Wang et al 2015a) have been devoted to examining the fiber bridging phenomenon. The bridging experiments are conducted in pipe flow loops with slots of different shape and size mimicking fractures, as shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

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Modeling of fiber bridging in fluid flow for well stimulation applications

et al. 2019

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Accurate acid placement constitutes a major concern in matrix stimulation because the acid tends to penetrate the zones of least resistance while leaving the low-permeability regions of the formation untreated. Degradable materials (fibers and solid particles) have recently shown a good capability as fluid diversion to overcome the issues related to matrix stimulation. Despite the success achieved in the recent acid stimulation jobs stemming from the use of some products that rely on fiber flocculation as the main diverting mechanism, it was observed that the volume of the base fluid and the loading of the particles are not optimized. The current industry lacks a scientific design guideline because the used methodology is based on experience or empirical studies in a particular area with a particular product. It is important then to understand the fundamentals of how acid diversion works in carbonates with different diverting mechanisms and diverters. Mathematical modeling and computer simulations are effective tools to develop this understanding and are efficiently applied to new product development, new applications of existing products or usage optimization. In this work, we develop a numerical model to study fiber dynamics in fluid flow. We employ a discrete element method in which the fibers are represented by multi-rigid-body systems of interconnected spheres. The discrete fiber model is coupled with a fluid flow solver to account for the inherent simultaneous interactions. The focus of the study is on the tendency for fibers to flocculate and bridge when interacting with suspending fluids and encountering restrictions that can be representative of fractures or wormholes in carbonates. The trends of the dynamic fiber behavior under various operating conditions including fiber loading, flow rate and fluid viscosity obtained from the numerical model show consistency with experimental observations. The present numerical investigation reveals that the bridging capability of the fiber-fluid system can be enhanced by increasing the fiber loading, selecting fibers with higher stiffness, reducing the injection flow rate, reducing the suspending fluid viscosity or increasing the attractive cohesive forces among fibers by using sticky fibers.

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Updated criterion to select particle size distribution of lost circulation materials for an effective fracture sealing

Cited by 85 publications

References 10 publications

Investigation of different environmental-friendly waste materials as lost circulation additive in drilling fluids

Investigation of different environmental-friendly waste materials as lost circulation additive in drilling fluids

Laboratory Study on a New Composite Plugging Material with High Bearing Strength and High-Temperature Resistance

Modeling of fiber bridging in fluid flow for well stimulation applications

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