Effect of horizontal wellbore on the production behavior from marine hydrate bearing sediment

Chong, Zheng Rong; Zhao, Junfang; Chan, Jian Hua Rudi; Yin, Zhenyuan; Linga, Praveen

doi:10.1016/j.apenergy.2018.01.072

Cited by 82 publications

(37 citation statements)

References 66 publications

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“…The higher the assessment, the greater the intention that is formed (Byabashaija and Katono 2011). Thus, an attitude shown by an individual can determine individual behavior (Night and Bananuka 2019;Nkundabanyanga et al 2017;Chong et al 2018). Economic growth raises the quality of life as people's income increases and directs their spending toward companies about which they have a positive attitude (Oh and Park 2020).…”

Section: Moderation Effect Of E-filing On the Relationship Between Attitudes On Tax Compliant Intentionmentioning

confidence: 99%

Effect of Religiosity, Perceived Risk, and Attitude on Tax Compliant Intention Moderated by e-Filing

Utama

Nimran

Hidayat

et al. 2022

IJFS

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This research examined the effect of Religiosity, Perceived Risk, and Attitude on Tax Compliant Intention, moderated by e-Filing. This research used a quantitative approach which involved the Structural Equation Model (SEM). Large taxpayers are generally in the form of agencies and individuals, so the population of this study comprised of companies that are in the Directorate General of Taxation of Large Taxpayers Jakarta, Large Tax Service Offices 1 and 2, totaling 529 companies. Religiosity (X1) and Perceived Risk (X2) significantly influence Attitude (Y1). Furthermore, Attitude (Y1) has a positive and significant effect on Tax Compliant Intention (Y2). e-Filing showed an insignificant moderating effect on the research model. The novelties are the development of the Theory of Planned Behavior by involving other variables that affect taxpayer compliance behavior, namely Religiosity and the perceived risk of taxpayers. In addition, this research involves the e-Filing variable as a moderating variable.

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Section: Moderation Effect Of E-filing On the Relationship Between Attitudes On Tax Compliant Intentionmentioning

confidence: 99%

Effect of Religiosity, Perceived Risk, and Attitude on Tax Compliant Intention Moderated by e-Filing

Utama

Nimran

Hidayat

et al. 2022

IJFS

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“…It was found that the incorporation of vertical wellbores could increase gas recovery by up to 8% and reduce water production by up to 42% due to their disturbance on the fluid flow. Thereafter, they further proved that the presence of horizontal wellbores could also simultaneously enhance gas production and reduce water production . Yu et al proposed a dual-vertical-well system for gas extraction from the oceanic methane hydrate reservoir in the Nankai Trough.…”

Section: Introductionmentioning

confidence: 99%

Insights into the Control Mechanism of Heat Transfer on Methane Hydrate Dissociation via Depressurization and Wellbore Heating

Wan

Peng

et al. 2020

Ind. Eng. Chem. Res.

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The dissociation of natural gas hydrate is an endothermic reaction controlled by heat transfer, which is closely associated with the employed exploitation methods and well configurations. The main purpose of this study is to investigate the relationship between heat transfer and gas hydrate dissociation in a cuboid pressure vessel with different vertical well layouts (central well and side well) and production methods (pure depressurization (PD), depressurization combined with wellbore heating (DH), and huff and puff (HP)) through experimental and numerical simulations. The results show that the hydrate dissociation in the PD cases is promoted only by heat conduction from the surrounding environment. The heat transfer behaviors are basically the same when adopting depressurization with different wellbore locations. Addition of wellbore heating in the DH and HP cases will result in faster hydrate decomposition. However, heat conduction from the ambient will be impeded by wellbore heating. The cumulative heat transferred across the boundary will drop below 0 at a certain time, which would subsequently lead to a sharp rise of the heat loss. To reduce heat loss across the boundary, the heating section of the wellbore should be placed in the central area of the hydrate-bearing layer. In addition, it is found that intermittent heat injection with the HP method has the advantages of enhancing the heat convection effect and reducing the heat absorption of the hydrate deposit, which results in more favorable heat utilization efficiency and net energy gain.

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“…They found that the gas production rate and bottom hole pressure drop determined the pressure state of the entire reservoir and also changed the mechanical state of the near-well zone. Chong et al studied the impact of horizontal well mining on hydrate production with experimental equipment and found that horizontal well mining could increase gas production while reducing water production [13]. Yu et al studied the process of hydrate decomposition and gas intrusion into reservoirs through experiments and numerical simulations [14].…”

Section: Introductionmentioning

confidence: 99%

Wellbore Stability of a Deep-Water Shallow Hydrate Reservoir Based on Strain Softening Characteristics

Feng

Wang

et al. 2020

Geofluids

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Deep-sea hydrate has great commercial exploitation value as a new type of energy, due to huge reserves, wide distribution, cleanliness, and lack of pollution. Accurately, prediction of the mechanical properties of hydrate reservoirs is a key issue for safe and efficient exploitation of deep-sea hydrate. Although there have been some experimental and numerical simulation studies on the borehole stability of the hydrate layer, the influence of temperature and flow on the decomposition of reservoir hydrate is still not well understood. There have been few pure mechanical studies on the stress and strain state of the hydrate formation around the well, and it is impossible to intuitively understand the influence of the wellbore on the original stress state of the hydrate formation. This paper therefore uses a discrete element method to establish a deep-water shallow hydrate reservoir borehole stability model and compares the discrete element numerical model with an elastoplastic analytical model of borehole stability to verify the reliability of the numerical model. A simulation study on the influence of factors such as reservoir depth and hydrate saturation on wellbore stability is carried out. The simulation results effectively present the constitutive characteristics of strain softening of hydrate sediments. According to the different mechanical characteristics, the near-well zone can be divided into a plastic strain softening zone, a plastic strain hardening zone, and an elastic zone. Reservoir depth and hydrate saturation are found to change the stress state near the well. The greater the depth and the lower the hydrate saturation, the greater the borehole shrinkage. The diameter of the optimal horizontal well in the goaf is in the range from 0.6 to 1.2 m.

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Effect of horizontal wellbore on the production behavior from marine hydrate bearing sediment

Cited by 82 publications

References 66 publications

Effect of Religiosity, Perceived Risk, and Attitude on Tax Compliant Intention Moderated by e-Filing

Effect of Religiosity, Perceived Risk, and Attitude on Tax Compliant Intention Moderated by e-Filing

Insights into the Control Mechanism of Heat Transfer on Methane Hydrate Dissociation via Depressurization and Wellbore Heating

Wellbore Stability of a Deep-Water Shallow Hydrate Reservoir Based on Strain Softening Characteristics

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