Thermal effects on differential pressure pipe sticking tendency

Ettehadi, Ali; Altun, Gürşat

doi:10.1016/j.petrol.2016.03.018

Cited by 6 publications

(2 citation statements)

References 21 publications

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“…Designing the overbalance pressure is very critical during the drilling process as it affects drilling performance as rock drillability rate and pipe differential stuck (Ettehadi and Altun, 2016). Hence, technical aspects have to be considered as well control, depleted zone pressures, and formation integrity (Erivwo and Makis, 2021).…”

Section: Mud-rock Exposurementioning

confidence: 99%

The impact of overbalance pressure on the alteration of sandstone geomechanical properties

Gamal

Elkatatny

2022

J Petrol Explor Prod Technol

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The overbalance pressure drilling technique is well common and practiced during the drilling operations in the petroleum field. This parameter is very critical and affects the drilled formation characteristics, and therefore, the main objective of the current study is to evaluate the impact of overbalance pressure that is applied during the drilling operation on the rock elastic and strength characteristics by employing integrated lab experimental work. Berea Buff sandstone rock type was utilized to interact with water-based drilling fluid (barite-weighted) under an extended range of overbalance pressure [300 to 1000 psi]. The current research presents extensive lab analyses that cover filtration tests for rock-mud interaction, scratch testing for determining the rock strength profile, sonic data acquisition, elastic properties determination, and spectrometry of scanning electron microscope and nuclear magnetic resonance spectrometry to study the internal pore structure changes. The analysis was performed before the mud interaction for the saturated samples (base case) and after applying different overbalance pressure (pre-mud interaction) to evaluate the rock properties alterations. The obtained results showed the high degree of impact of the overbalance pressure on the sonic wave propagation as the compressional and shear wave velocities increased by 17 and 6%, respectively with increasing the overbalance pressure. Poisson’s ratio showed a stable trend, while Young’s modulus showed an increasing trend by 23% increase with the extended range of the overbalance pressure. The rock strength showed deterioration behavior with increasing the overbalance pressure. The unconfined compression strength decreased by 10% and the tensile strength showed a 9% reduction. The internal pore spectrometry showed the rock structure alterations due to mud solids precipitations and filtrate fluid impact on the rock integrity during the rock-mud interaction. In addition, statistical analysis illustrated the high degree of relationship between the recorded rock characteristics with the overbalance pressure as a controlling factor on the rock and mud interaction.

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Section: Mud-rock Exposurementioning

confidence: 99%

The impact of overbalance pressure on the alteration of sandstone geomechanical properties

Gamal

Elkatatny

2022

J Petrol Explor Prod Technol

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“…Hence, the rheological properties of WBDFs are not desirable in the presence of salts. Furthermore, it can lead to the formation of a thick filter cake and reduce the wellbore diameter, which increases the risk of drill pipe sticking. − …”

Section: Introductionmentioning

confidence: 99%

New Insight into the Filtration Control of Drilling Fluids Using a Graphene-Based Nanocomposite under Static and Dynamic Conditions

Movahedi

Jamshidi

Hajipour

2021

ACS Sustainable Chem. Eng.

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During oil and gas well drilling, the filtration control of bentonite water-based drilling fluids (BT-WBDFs), as an environmentally friendly fluid, is crucial to avoid formation damage and swelling shale problems. One of the most critical problems is undesirable changes in the rheology and filtration properties of the BT-WBDFs because of salt contamination. Herein, the potential of using both graphene oxide (GO) nanosheets and a graphene oxide-polyacrylamide (GO-PAM) nanocomposite is evaluated for controlling the filtration properties, especially in a salty medium. First, GO nanosheets were functionalized, and then the GO-PAM nanocomposite was synthesized using the solution polymerization method. Afterward, the products were characterized using scanning electron microscopy, dynamic light scattering, and Fourier transform infrared spectroscopy. The rheological parameters were analyzed using power-law, Herschel Buckley, and Bingham plastic models. The filtration tests were carried out under both static and dynamic conditions. A membrane cell equipped with an agitating system was used for conducting dynamic tests. Furthermore, the static tests have been conducted under low-pressure/lowtemperature and high-pressure/high-temperature conditions. The experimental results revealed that although adding the GO-PAM nanocomposite into WBDFs, at the concentration below 1 wt %, increases rheological properties more than GO nanosheets, the rate of filtration properties was more reduced for GO nanosheets under static conditions. The obtained results showed that under static conditions, the addition of only 0.5 wt % of GO nanosheets to saline mud could reduce the total cumulative fluid loss, rate of fluid loss, and mud cake thickness more than 60, 99, and 72%, respectively. Under dynamic conditions, similar results were obtained for the shear flow of 700 rpm. However, results showed that the GO-PAM nanocomposite has better performance because of lower cake erosion under high shear flow conditions. GO nanoparticles reduce the filtrate loss by blocking the pore space in the filter cake, while in the presence of polyacrylamide, the adhesion between the particles increases, and the erosion rate decreases under shear flows. The experimental results revealed that using 0.7 wt % GO-PAM nanocomposite could reduce the erosion rate of the mud cake more than 60% under turbulent flow conditions, while this value was 20% for GO nanosheets in the same concentration.

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On the potential of alyssum as an herbal fiber to improve the filtration and rheological characteristics of water-based drilling muds

Ebrahimi¹,

Sanati²

2022

Petroleum

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Thermal effects on differential pressure pipe sticking tendency

Cited by 6 publications

References 21 publications

The impact of overbalance pressure on the alteration of sandstone geomechanical properties

The impact of overbalance pressure on the alteration of sandstone geomechanical properties

New Insight into the Filtration Control of Drilling Fluids Using a Graphene-Based Nanocomposite under Static and Dynamic Conditions

On the potential of alyssum as an herbal fiber to improve the filtration and rheological characteristics of water-based drilling muds

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