Journal of Petroleum Exploration and Production Technology

https://link.springer.com/journal/13202

List of Papers (Total 632)

Impact of rock fabric on flow unit characteristics in selected reservoir sandstones from West Baram Delta Offshore, Sarawak

The successful application of enhance oil recovery (EOR) technology requires an accurate understanding of the internal architecture of reservoirs and complex distribution of flow unit characteristics within different lithofacies. However, flow unit characteristics in the reservoir lithofacies of West Baram Delta Offshore, Sarawak, remain unexplored. Therefore, this paper...

A new approach for predicting oil recovery factor during immiscible CO2 flooding in sandstones using dimensionless numbers

CO2 injection is one of the most promising techniques to enhance oil recovery. The most favorable properties of CO2 made this method popular and it has been widely used since 1950. Experimentally, the effect of CO2 injection on incremental oil recovery is widely measured by the core-flooding approach. An accurate estimation of the recovery factor is required to analyze the...

A new method to determine reasonable well pattern density in low-permeability gas reservoirs

The productivity evaluation of gas reservoirs is used to determine the optimal number of well pattern, which is an important part of the preparation of gas reservoir development plan. Using integral transformation and asymptotic analyses to solve the pseudo steady-state flow model in closed rectangular gas reservoir of constant thickness, analytic solution of pressure...

A comprehensive model for the prediction of fluid compositional gradient in two-dimensional porous media

Compositional gradient can be described as changes in the composition of components both vertically and horizontally in a hydrocarbon reservoir. In the present work, two-dimensional compositional gradient in multi-component gas and oil mixtures is modeled. A thermodynamic model is developed based on molecular diffusion coefficients in mass diffusive flux. A combination of Sigmund...

Screening and characterization of biosurfactant produced by Pseudoxanthomonas sp. G3 and its applicability for enhanced oil recovery

Biosurfactants are one of the microbial bioproducts that are in most demand from microbial-enhanced oil recovery (MEOR). We isolated and screened potential biosurfactant-producing bacteria, followed by biosurfactant production and characterization, and a simulation of the MEOR application to biosurfactants in a sand-packed column. Isolate screening was conducted based on...

Sorption capacity of Indian coal and its variation with rank parameters

The study of gas sorption characteristics is important for practical assessment of coal bed methane (CBM) production and CO2 sequestration in coal seam. Adsorption isotherm is one of the critical parameters for the establishment of production as well as injection well. Adsorption isotherm provides information about the reservoir conditions and critical desorption pressure as well...

Effect of bottom water on performance of cyclic superheated steam stimulation using a horizontal well

Horizontal well has been widely used for heavy-oil recovery in the petroleum industry. Besides, superheated steam has been proved effective in heavy-oil recovery by field practice. In this paper, a numerical model is established with the help of numerical simulator. The effect of bottom water on the productivity of cyclic superheated steam stimulation well has been studied. Some...

Chebyshev wavelets collocation method for simulating a two-phase flow of immiscible fluids in a reservoir with different capillary effects

At least in the last 10 years, considerable effort has been given to studying the dynamics of fluid flow in porous media. The phenomena is widely applicable in many areas of science and engineering. In many cases, the effect of capillary pressure and discontinuities in the two-phase flow dynamics is not fully clear, especially in petroleum reservoirs. In this paper, we introduce...

The analysis of drag reduction in Kuwaiti crude oil samples using surfactants and polyacrylamide

The rheological characteristics of Kuwait crude oil samples were studied as a function of the American Petroleum Institute gravity (API), drag reduction material and concentration, isothermal and nonisothermal conditions, and mixer speed and frequency. Accurate measurements and analyses of rheological characteristics are important to determine the effect of a drag reduction agent...

Optimized production profile using a coupled reservoir-network model

This paper presents an integrated approach for scheduling and forecasting oil and gas production by integrating models of the entire value chain, from the reservoirs to the sales points. The methodology ensures maximum oil production at each time step of the reservoir simulator while honoring all operational constraints of the system. The proposed method is applied to a small...

Preventing and removing wax deposition inside vertical wells: a review

Wax deposition is one of the most challenging flow assurance issues in oil production processes. The related problems span from reservoirs to refineries, but their consequences can be particularly challenging when the affected area is difficult to reach, such as producing wells. The wax deposition in the areas adjoining the bore, the bore face, the tubing string and the pump is...

Slight insights and perspectives of future heavy oil recovery

In this paper, we put forward critical future prospects based on the paper that was published on International Journal of Heat and Mass Transfer. At present, engineers are familiar with the advantages and disadvantages of different working fluids in thermal recovery of heavy oil. For all the oil displacement mechanism, they can be summarized into only three aspects: (a) physical...

Review on microfluidic studies for EOR application

All the time the flow of fluids happens below the surface of the earth. These flow processes can only be imagined, but not be fully visualised on how fluid flow behaviour occurs though the porous medium of the rocks. Hence comes the play of microfluidic micromodels. These are a transparent version of slices (2 dimensional) porous structure of rocks such as sandstone duplicated...

Large undiscovered oil resources are predicted south of Russia

Stavropol Region is one of the oldest petroleum provinces on South of Russian Federation. Today, most of its fields are depleted and prospects for the discovery of new large hydrocarbon deposits considered exhausted. However, our studies allow us to talk about the possibility of the existence of previously undiscovered oil reservoirs, clamped in the source rocks associated with...

The geological characteristics and exploration of continental tight oil: an investigation in China

Tight oil is an important and potential reservoir in future China. Drawn from the successful exploration of tight oil in North America, tight oil exploration is now in progress in China. In this paper, we surveyed the tight oil exploration status and challenges, as well as the tight reservoir properties in China, including source rocks, lithology, physical properties and pressure...

Pore pressure variation at constant confining stress on water–oil and silica nanofluid–oil relative permeability

Studies on stress sensitivity of relative permeability in the laboratory were mostly carried out by varying overburden pressure at constant pore pressure (PP). However, in a real oilfield situation, changes in net stress are induced by changes in PP rather than overburden pressure. This research presents the effect of PP variation at a confining stress of 25 MPa on water–oil and...

Estimating reservoir zone from seismic reflection data using maximum-likelihood sparse spike inversion technique: a case study from the Blackfoot field (Alberta, Canada)

Seismic inversion involves extracting qualitative as well as quantitative information from seismic reflection data that can be analyzed to enhance geological and geophysical interpretation which is more subtle in a traditional seismic data interpretation. Among many approaches that have been made to improve interpretation of post-stack seismic data, a great effort has been made...

A review of economic risking methods commonly used in hydrocarbon exploration

Three different risking methods for hydrocarbon exploration projects are discussed. The so-called Cozzolino procedure is shown to have the major drawback that it predicts less and less involvement should be taken in a project the greater the potential gains. The Kelly procedure circumvents this weakness but has itself the weakness that it can only allow involvement in a project...

A new way to calculate productivity of five-spot pattern at high water cut stages

This paper presents a new way to calculate productivity of five-spot pattern at high water cut stages. In low permeability reservoirs, it is difficult for the reservoir fluid to flow, and the recovery factor is very low. Being based on the non-Darcy flow in low permeability reservoir, taking threshold pressure gradient into consideration, a new method to calculate the well...

Stability of PAM/PEI emulsified gels under HTHS conditions for water shut-off treatment

Emulsification has been widely used in the oil industry. The thermal stability of emulsified systems, such as emulsified gels or acids, is critical for the placement success of the emulsified system. Early separation of the system in a tubular well leads to corrosion. In the present study, the stability of emulsified polyacrylamide/polyethylenimine (PAM/PEI) gels is investigated...

Uncertainty quantification in production forecast for shale gas well using a semi-analytical model

The productivity of shale gas well is often with high uncertainty because of the uncertainties in the characterization of formation properties, fracture properties, gas adsorption, and flow mechanisms. This paper provides an efficient method to probabilistically forecast shale gas production by combining the Markov chain Monte Carlo method (MCMC) and a semi-analytical model. A...

The effect of 1,6-hexamethylenediamine on thermal stability and shale cutting recovery of heavy weight drilling fluids

The capability of drilling fluid to endure high temperature and stabilize shale cuttings is important characteristics of drilling fluids. In this work, a combination of 1,6-hexamethylenediamine and polyanionic cellulose (PAC) was tested to observe the impact of 1,6-hexamethylenediamine on thermal stability of PAC and its influence on the shale cutting stability of drilling fluid...

Sedimentary facies and model of gentle slope shallow-water braided river delta in the Jurassic Sangonghe Formation, Yanqi Basin, China

The Jurassic Sangonghe Formation of Yanqi basin develops a set of shallow braided river delta deposits, and it is of great significance for the exploration and development of Baolang oilfield to study its sedimentary characteristics. Based on the core data and wire-line log data in the study area with a highly dense well pattern, this work aims to provide the sedimentary features...

An expert decision support system for sandstone acidizing design

Based on the fundamentals of expert system (ES) and decision support system (DSS), we developed an integrated system, the expert decision support system (EDSS), to design and optimize sandstone acidizing. The new system combines knowledge of the ES with DSS models to facilitate decision-making for qualitatively and quantitatively acidizing sandstone reservoirs; this approach...