The Experimental Study on a New Type Low Temperature Water- based Composite Alcohol Drilling Fluid

Nikolaev, N.I.; Liu, Tianle; Wang, Zhen; Jiang, Guosheng; Sun, Jiaxin; Zheng, Minghui; Wang, Yu

doi:10.1016/j.proeng.2014.06.199

Cited by 17 publications

(5 citation statements)

References 7 publications

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“…A hydrate inhibitor can be divided into two types, namely, thermodynamic hydrate inhibitors (THIs), which inhibit hydrate formation by shifting the equilibrium curve to lower temperature or high pressure, and low dosage hydrate inhibitors (LDHIs), which are effective at lower concentrations. THIs, such as methanol and ethylene glycol, are a kind of widely used hydrate inhibitor which prevent the hydrate formation by shifting the phase boundary of gas hydrates out of the prevailing conditions in the pipelines. − LDHIs are used in a much lower concentration which primarily takes effect by reducing the growth of hydrate particles. In specific, some LDHIs called kinetic hydrate inhibitors (KHIs) prolong the nucleation time of hydrate formation, and some prevent the agglomeration of hydrate particles, named antiagglomerants (AAs). − They do not change the thermodynamic conditions of hydrate formation.…”

Section: Introductionmentioning

confidence: 99%

“…The additives of high molecular weight polymers (PAM-1, XG-1, and GG-1) have much more kinetic inhibition than low molecular weight polymers (PAM-2, XG-2, and GG-2). , Zhao and co-workers have investigated the performance of hydrate inhibition in drilling fluid under the synergistic conditions of thermodynamic hydrate inhibitors and PVP and the performance of kinetic hydrate inhibitors in bentonite muds. , Kelland et al have researched the feasibility of adding kinetic hydrate inhibitor to drilling fluid . Some researchers have developed a number of drilling fluids used for hydrate-bearing sediment which also can prevent hydrate formation and blockage in pipelines. ,, The drilling fluids used in the above studies are simplified formula in laboratory settings. There are few reports on the formation and inhibition of hydrate in drilling fluids which use the actual production process of an oil and gas field and the effect of hydrate inhibitors on the rheological properties of drilling fluids.…”

Section: Introductionmentioning

confidence: 99%

“…17 Some researchers have developed a number of drilling fluids used for hydrate-bearing sediment which also can prevent hydrate formation and blockage in pipelines. 11,31,42 The drilling fluids used in the above studies are simplified formula in laboratory settings. There are few reports on the formation and inhibition of hydrate in drilling fluids which use the actual production process of an oil and gas field and the effect of hydrate inhibitors on the rheological properties of drilling fluids.…”

Section: Introductionmentioning

confidence: 99%

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Investigation on Methane Hydrate Formation in Water-based Drilling Fluid

Zhang

et al. 2021

Energy Fuels

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To guarantee the flow assurance of drilling fluid in deep-water drilling, the inhibitory effect of PVP-K90 on methane hydrate formation was measured at 275.15 and 277.15 K with an initial pressure of 6, 8, and 10 MPa. The effect of PVP-K90 on the rheological properties of drilling fluid was also measured. Results showed that the apparent viscosity enhanced from 27 and 114 mPa•s as the concentration of PVP-K90 increased up to 2.0 wt %, which greatly weakened the fluidity of the drilling fluid. However, the addition of PVP-K90 showed a positive effect on prolonging the hydrate nucleation time and reducing the methane consumption in hydrate growth. The mean induction time of gas hydrate formation at 277.15K with the addition of 1.0 wt % PVP-K90 into the drilling fluid was at least 3 times higher than that without the addition of 1.0 wt % PVP-K90. The initial methane consumption rate and total methane consumption were reduced evidently with the increasing concentration of PVP-K90. In addition, increasing the temperature was also suggested to enhance the inhibitory effect on hydrate formation. Therefore, considering the influence of PVP-K90 on the fluidity of drilling fluid and the inhibitor effect of hydrate formation, 1.0 wt % PVP-K90 was thought to be a suitable concentration for the prevention of methane hydrate formation in drilling fluid at subcooling of less than 4.5 K. These observations have special significance for water-based drilling fluid with hydrate inhibition performance design in deep-water drilling.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Investigation on Methane Hydrate Formation in Water-based Drilling Fluid

Zhang

et al. 2021

Energy Fuels

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“…The dissociated hydrate may reform in the wellbore or in other parts of the drilling assembly which can lead to serious drilling geo-hazard challenges. − Thus, drilling mud systems used in drilling hydrate sediments must provide rheological characteristics which are capable of accommodating the presence of hydrate without blockage . Current efforts are mostly focused on hydrate prevention via kinetic hydrate inhibitors such as gycols, − PVP, , and ionic liquids. , The rheology of the drilling mud in the presence of these inhibitors is usually tested under ambient conditions without hydrates. However, there are no studies that evaluate the rheological properties of clathrate hydrates in drilling mud systems.…”

Section: Introductionmentioning

confidence: 99%

Investigating the Potential Cuttings Transport Behavior of Ionic Liquids in Drilling Mud in the Presence of sII Hydrates

Bavoh

Ofei

2020

Energy Fuels

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Water-based mud used for drilling hydrate sediments is often challenged with hydrate related wellbore instability and geohazards. Ionic liquids are believed to improve the rheological and hydrate management properties of water-based mud for drilling hydrate sediments. However, the effect of hydrates and ionic liquids of the viscoelastic properties of polymer water-based mud is not well understood in gas hydrate sediment drilling operation. In this study, the amplitude sweep, frequency sweep and flow curves of tetrahydrofuran hydrate and four imidazolium ionic liquids in polymer water-based mud system were evaluated at 271.15 K using a vane geometry in a Discovery HR-1 rheometer. The ionic liquids in this study were chosen to allow a clear understanding of their alkyl chain length and anion effect and were tested at 1 wt %. The studied ionic liquids are 1-ethyl-3-methylimidazolium chloride [C2 mim][Cl], 1-butyl-3-methylimidazolium chloride [C4 mim][Cl], 1-butyl-3-methylimidazolium tetrafluoroborate [C4 mim][BF4], and 1-hexyl-3-methylimidazolium chloride [C6 mim][Cl]. The study revealed that the storage modulus (G′) and loss modulus (G″) of the polymer water-based mud were reduced in the presence of tetrahydrofuran hydrate, while its viscoelastic range was increased from 13% to 25%, due to the solid nature of hydrate present in the mud. Generally, the presence of ionic liquids in the base mud (without THF) negligibly affected the viscoelastic properties of the base mud. However, the presence of hydrates affected the viscoelastic properties of the base mud and ionic liquid systems by changing its responses a fast deformation from elastic dominance to viscous at high frequencies (>50 rad/s). Ionic liquids with longer alkyl chains ([C4 mim][Cl] and [C6 mim][Cl]) best inhibited tetrahydrofuran hydrate formation in the mud and provided suitable viscoelastic and hydraulics properties for drilling fluids. [C2 mim][Cl] and [C4 mim][BF4] promoted hydrate formation and provided minimal drilling hydraulics properties of the THF water-based mud slurry. The presence of ionic liquids in the tetrahydrofuran hydrate mud slurry increased the consistency index and decreased the yield stress, flow index and YP/PV index of the THF water-based mud slurry suitable for ensuring the safe transportation of hydrate crystals and drill cutting out of the wellbore.

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“…Oil seal formation is the process of sticking of soft sticky rocks (usually clays) on the cutting edges of the bit, which leads to their temporary inefficiencies on the elements of the drill string in the places of transition from a large diameter to a smaller one (Guseynova et al 2016). This process leads to a decrease in the rate of penetration, an increase in the forces of resistance to movement of the tool in the well, the occurrence of talus and rockfall due to the effect of pistoning at lifting the drill string with the oil seal (Nikolaev et al 2014;Idress et al 2020). The cause of oil seal formation is insufficient breed inhibition, in particular hydration and drilling of granular highly permeable formations.…”

Section: Introductionmentioning

confidence: 99%

Advances in Raw Material Industries for Sustainable Development Goals

Litvinenko¹

2020

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The Experimental Study on a New Type Low Temperature Water- based Composite Alcohol Drilling Fluid

Cited by 17 publications

References 7 publications

Investigation on Methane Hydrate Formation in Water-based Drilling Fluid

Investigation on Methane Hydrate Formation in Water-based Drilling Fluid

Investigating the Potential Cuttings Transport Behavior of Ionic Liquids in Drilling Mud in the Presence of sII Hydrates

Advances in Raw Material Industries for Sustainable Development Goals

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