Une nouvelle approche pour l’évaluation de l’inhibition des argiles par les fluides de forage

Khodja, Mohamed; Canselier, Jean-Paul; Bergaya, F.; Khodja-Saber, Malika

doi:10.1051/978-2-7598-0338-5-013

Cited by 1 publication

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“…The heavy metals are namely: lead (Pb), copper (Cu), chromium (Cr), cadmium (Cd), zinc (Zn) and manganese (Mn). As it can be seen from this table, there are some samples that have elements of amounts exceeding the maximum tolerated values for hydrocarbons and heavy metals (Khodja, 2008). Thus, the current drill cuttings are conventionally toxic (Lake and Menzies, 2007) and cannot be landfilled and hence further treatments are needed.…”

Section: Characterization Of Crude Drill Cuttings Heavy Metals and Hy...mentioning

confidence: 99%

“…The optimized results using (Mixture G, 5.102%) are still insufficient for the landfilling, since they possess values that are above the tolerated value which is 5% (Abbas, 2011). Thus, for the solidification/stabilization process for drill cuttings highly contaminated with hydrocarbons, to be effective, the cuttings must be subjected to the pre-treatment (centrifugation, dilution) operation to confirm the regulations set by SONATRACH (Khodja 2008, Abbas 2011. The results of the sample before (Mixture G) and after centrifugation operation (Mixture G -) are presented in Table 8.…”

Section: Centrifugation Effect and Acceptance Test For Landfillingmentioning

confidence: 99%

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Archives of Environmental Protection

Abbas,

Aissa,

Khodja

et al. 2022

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Hassi Messaoud oil field is one of the most important fields in Algeria and the world, because it covers an important quantity of total Crude Oil Production in Algeria. Furthermore, two-thirds of this oil field is underexplored or not explored. Therefore, the drilling process of petroleum wells in this field is a continuous process that results in significant drilling waste. This implies that enormous noxious quantities of drilling waste are produced daily that require treatment via solidification/stabilization (S/S) process before being landfilled. These types of wastes have pollution concentration that significantly exceeds the safety standards. In this study, we focus on the factors affecting the solidification/stabilization treatment of the drill cuttings obtained from Hassi Messaoud oil field and the process optimization. The solidification/stabilization is performed using the cement as binder, and sand, silicate, organophilic clay and activated carbon as additives.The study has been divided into two steps: (i) Determining the optimum ratio of each element used in the S/S process for the organic element (hydrocarbon) elimination, (ii) Combining the optimum ratios found in the previous step to determine the optimal mixture. The obtained results in the first step showed that the optimum ratio for the cement-to-drill cuttings mass ratio is 0.09:1. For the additives-to-drill cuttings mass ratios are 0.04:1, 0.006:1, 0.013:1 and 0.013:1 for the sand, sodium silicate, organophilic clay and activated carbon, respectively. An optimum formula is found whose main finding shows that the hydrocarbon content of our sample is dropped from 9.40 to 1.999%. Many tests' results such as matrix permeability, resistance to free compression and heavy metals rate before and after S/S process were investigated before landfilling. Besides that, in the light of outcomes achieved by this assessment, these harmful cuttings can be converted into a useful product that helps in reducing the environmental foot prints.

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Section: Characterization Of Crude Drill Cuttings Heavy Metals and Hy...mentioning

confidence: 99%

Section: Centrifugation Effect and Acceptance Test For Landfillingmentioning

confidence: 99%