scholarly journals INFERENCE OF THE CRETACEOUS ROCKS LITHOLOGY FROM CORBII MARI OIL FIELD (MOESIAN PLATFORM) BY MINERALOGICAL-PETROGRAPHIC ANALYSIS OF DRILL CUTTINGS

2016 ◽  
Author(s):  
Gheorghe-Adrian Branoiu
Keyword(s):  
Oil Field ◽  
Petrographic Analysis ◽  
Drill Cuttings ◽  
Moesian Platform

Geomechanical aspects of induced microseismicity during CO2 injection in Illinois Basin

2021 ◽  
Vol 40 (11) ◽  
pp. 823-830
Author(s):  
Nikita Bondarenko ◽  
Sherilyn Williams-Stroud ◽  
Jared Freiburg ◽  
Roman Makhnenko
Keyword(s):  
Oil Field ◽  
Co2 Injection ◽  
Low Permeability ◽  
Illinois Basin ◽  
Petrographic Analysis ◽  
Flow Properties ◽  
Geomechanical Characterization ◽  
Fluid Penetration ◽  
Geophysical Log

Carbon sequestration activities are increasing in a global effort to mitigate the effects of greenhouse gas emissions on the climate. Injection of wastewater and oil-field fluids is known to induce seismic activity. This makes it important to understand how that risk relates to CO2 injection. Injection of supercritical CO2 into the Cambrian Mt. Simon sandstone in Illinois Basin induced microseismicity that was observed below the reservoir, primarily in the Precambrian crystalline basement. Geomechanical and flow properties of rock samples from the involved formations were measured in the laboratory and compared with geophysical log data and petrographic analysis. The controlling factors for induced microseismicity in the basement seem to be the hydraulic connection between the reservoir and basement rock and reactivation of pre-existing faults or fractures in the basement. Additionally, the presence of a laterally continuous low-permeability layer between reservoir and basement may have prevented downward migration of pore pressure and reactivation of critically stressed planes of weakness in the basement. Results of the geomechanical characterization of this intermediate layer indicate that it may act as an effective barrier for fluid penetration into the basement and that induced microseismicity is likely to be controlled by the pre-existing system of faults. This is because the intact material is not expected to fail under the reservoir stress conditions.

scholarly journals The Optimal Formula for Organic Oil Immobilization in Algerian Petroleum Drill Cuttings Using Solidification/Stabilisation Treatment

2021 ◽  
Author(s):  
Abbas Hadj Abbas ◽  
Abidi Saad Aissa ◽  
Khodja Mohamed ◽  
Sagala Farad ◽  
Hacini Messaoud
Keyword(s):  
Activated Carbon ◽  
Continuous Process ◽  
Oil Field ◽  
Drilling Process ◽  
Mass Ratio ◽  
Optimum Ratio ◽  
Drill Cuttings ◽  
Drilling Waste ◽  
Organophilic Clay ◽  
Optimum Formula

Abstract 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, sand, silicate, organophilic clay and activated carbon as additives. The study is divided in two steps: (i) aims to determine the optimum ratio of each element used in the S/S process for the organic element (hydrocarbon) elimination, (ii) aims to combine 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 ratio 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 which its main finding shows that the hydrocarbon content of our sample is dropped from 9.40 to 1.999%. Many tests results before landfilling were investigated such as matrix permeability, resistance to free compression and heavy metals rate before and after S/S process. 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.

Development of technogenic soil based on drill sludge formed in the process of well construction in the Vinno-Bannovsky oil field of the Samara region

2021 ◽  
pp. 95-104
Author(s):  
A.S. Guba ◽  
◽  
R.N. Bakhtizin ◽  
R.I. Ableev ◽  
A.V. Fakhreeva ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Maximum Permissible Concentration ◽  
Oil Field ◽  
Chemical Characteristics ◽  
Mechanical Mixing ◽  
Natural Sand ◽  
Drill Cuttings ◽  
Environmentally Safe ◽  
Physical And Chemical ◽  
Iron Bearing

The mineralogical, chemical and gravimetric composition of drill cuttings formed during the construction of wells in the Vinno-Bannovskoye oil field in the Samara region has been studied. It was found that the cuttings included in the drill cuttings consist of the following rock-forming minerals - calcite, quartz, dolomite, wollastonite, iron-bearing ankermanite and ankerite. The excess of the gross content of the maximum permissible concentration (MPC) of heavy metals in drill cuttings is observed for lead, arsenic and mercury. The content of oil products is within 0.64 ± 0.27 g/kg and does not exceed the MPC for oil. A method is proposed for producing environmentally safe permeable technogenic soil by mechanical mixing of drill cuttings with natural sand, phosphogypsum and sorbent in a ratio of 53: 40: 2: 1, leading to a decrease in the toxic effect of pollutants by reducing their concentration and sorption on the sorbent. According to its physical and chemical characteristics, the soil obtained during the disposal of drill cuttings is technogenic dispersed soil in accordance with GOST 25100 - 2020 «Soils. Classification» and can be used in the construction of soil foundations of production, auxiliary sites.

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