### Volume 59, 2017, Issue 1

Geochemical appraisal of ekenkpon shale in the calabar flank, southeastern Nigeria (2 MB, pdf) Geochemical appraisal of ekenkpon shale in the calabar flank, southeastern Nigeria |

Thermodynamic modeling of asphaltene precipitation and comparison of the eos, scaling, solubility and pc-saft models (1 MB, pdf) Thermodynamic modeling of asphaltene precipitation and comparison of the eos, scaling, solubility and pc-saft models |

Biodiesel: reducing environment pollutant and dependency on petroleum diesel (677 KB, pdf) Biodiesel: reducing environment pollutant and dependency on petroleum diesel |

Prediction of resourse base increase of catalytic dewaxing by a mathematical modeling method (574 KB, pdf) Prediction of resourse base increase of catalytic dewaxing by a mathematical modeling method |

Wireline, mwd and mud logs: a three- way complimentary approach to reduce uncertainties in pore pressure analysis in the smk field, onshore niger delta (2 MB, pdf) Wireline, mwd and mud logs: a three- way complimentary approach to reduce uncertainties in pore pressure analysis in the smk field, onshore niger delta |

Impact of oxidation on the expansion pressure of coal (1 MB, pdf) Impact of oxidation on the expansion pressure of coal |

Safety knowledge of domestic liquefied petroleum gas (lpg) users in ghana – a case study (581 KB, pdf) Safety knowledge of domestic liquefied petroleum gas (lpg) users in ghana – a case study |

Investigation and simulation study of hot gas injection in gagd process in a fractured medium oil reservoir (1 MB, pdf) Investigation and simulation study of hot gas injection in gagd process in a fractured medium oil reservoir |

Oil well sidetracking in mature fields: Its potential for increasing recovery from Nigeria’s mature fields (577 KB, pdf) Oil well sidetracking in mature fields: Its potential for increasing recovery from Nigeria’s mature fields |

Affect of saturation exponent and cementation factor on water saturation in carbonate reservoir “Case study” (685 KB, pdf) Affect of saturation exponent and cementation factor on water saturation in carbonate reservoir “Case study” |

Experimental study of treatment process of exit waste water from petroleum companies (486 KB, pdf) Experimental study of treatment process of exit waste water from petroleum companies |

Environmental effects and economic study on flare gas recovery for using as fuel gas or feedstock (1 013 KB, pdf) Environmental effects and economic study on flare gas recovery for using as fuel gas or feedstock |

An optimization algorithm to improve real time data in a petroleum plant (1 MB, pdf) An optimization algorithm to improve real time data in a petroleum plant |

Combined use of 2d electrical resistivity and seismic refraction in hydrogeophysical exploration (705 KB, pdf) Combined use of 2d electrical resistivity and seismic refraction in hydrogeophysical exploration |

### Volume 59, 2017, Issue 2

Application of numerical signal differentiation methods to determine stationarity of a process (603 KB, pdf) Application of numerical signal differentiation methods to determine stationarity of a process |

The gross calorific value in the wet ash-free state (574 KB, pdf) The gross calorific value in the wet ash-free state |

Indirect measurement of flow of liquid pumped with pump packages (577 KB, pdf) Indirect measurement of flow of liquid pumped with pump packages |

Numerical simulation of transient flow heat transfer in super critical co2 pipeline: finite element approach (1 MB, pdf) Numerical simulation of transient flow heat transfer in super critical co2 pipeline: finite element approach |

Geological and geophysical investigation of a late maastrichtian coal seam at eha-alumona/orba environs, anambra basin, Nigeria (2 MB, pdf) Geological and geophysical investigation of a late maastrichtian coal seam at eha-alumona/orba environs, anambra basin, Nigeria |

Mathematical simulation of low-temperature gas separation (848 KB, pdf) Mathematical simulation of low-temperature gas separation |

Modeling of a commercial scale thermal cracking plant using gmdh neural network (602 KB, pdf) Modeling of a commercial scale thermal cracking plant using gmdh neural network |

Modeling a commercial vacuum gas oil hydrocracking plant using adaptive-neuro fuzzy inference system (anfis) (666 KB, pdf) Modeling a commercial vacuum gas oil hydrocracking plant using adaptive-neuro fuzzy inference system (anfis) |

Beneficiation of south african coal-fly ash in oil well cement operation (699 KB, pdf) Beneficiation of South African Coal-fly Ash in Oil Well Cement Operation |

Effect of so2 co-feeding on co2 adsorption capacity of south african coals during co2 sequestration (735 KB, pdf) Effect of so2 co-feeding on co2 adsorption capacity of south african coals during co2 sequestration |

Establishment of a sand production prediction model for vertical wellbores using the three dimensional hoek–brown criterion (966 KB, pdf) Establishment of a sand production prediction model for vertical wellbores using the three dimensional hoek–brown criterion |

Oxidative catalytic desulphurization of naphtha in a trickle bed reactor (1 MB, pdf) Oxidative catalytic desulphurization of naphtha in a trickle bed reactor |

Gas lift optimization: using a niger delta field as case study (933 KB, pdf) Gas lift optimization: using a niger delta field as case study |

Petrophysical evaluation and reservoir quality of ilam formation (late cretaceous), ahvaz oil field, dezful embayment, sw Iran (1 MB, pdf) Petrophysical evaluation and reservoir quality of ilam formation (late cretaceous), ahvaz oil field, dezful embayment, sw Iran |

### Volume 59, 2017, Issue 3

Application of numerical signal differentiation methods to determine stationarity of a process (603 KB, pdf) Application of numerical signal differentiation methods to determine stationarity of a process |

Characterization of ash content, coking tendencies and evalua-tion of physicochemical properties of okobo coals (1 MB, pdf) Characterization of ash content, coking tendencies and evalua-tion of physicochemical properties of okobo coals |

Modern effective cementing practices: a case study of well “a” in the niger delta (410 KB, pdf) Modern effective cementing practices: a case study of well “a” in the niger delta |

Analysis of fault zones for reservoir modeling in taa field, niger delta, Nigeria (920 KB, pdf) Analysis of fault zones for reservoir modeling in taa field, niger delta, Nigeria |

Formulation, compounding and assessment of de-emulsifiers for the de-emulsification of nigerian crude oil emulsion (776 KB, pdf) Formulation, compounding and assessment of de-emulsifiers for the de-emulsification of nigerian crude oil emulsion |

Novel green soybean oil derivatives as corrosion inhibitors for mild steel at 0.5n hcl (1 013 KB, pdf) Novel green soybean oil derivatives as corrosion inhibitors for mild steel at 0.5n hcl |

Source rock geochemistry of the paleogene strata in bende-umuahia and its environs, niger delta basin, southeastern, Nigeria (905 KB, pdf) Source rock geochemistry of the paleogene strata in bende-umuahia and its environs, niger delta basin, southeastern, Nigeria |

Techno-economical feasibility studies on establishing petro refineries and their advantages in iran (656 KB, pdf) Techno-economical feasibility studies on establishing petro refineries and their advantages in iran |

Lowering cost and improving the production efficiency of sidetrack wells in mature fields (889 KB, pdf) Lowering cost and improving the production efficiency of sidetrack wells in mature fields |

Resolution of seismic interpretation anomalies through the spectral ratio time dependent method (853 KB, pdf) Resolution of seismic interpretation anomalies through the spectral ratio time dependent method |

Moisture-holding capacity of coal (634 KB, pdf) Moisture-holding capacity of coal |

Hydrocarbon reservoir characterization of “igbobi field’', offshore niger delta using petrophysical analysis and well log interpretation (1 MB, pdf) Hydrocarbon reservoir characterization of “igbobi field’', offshore niger delta using petrophysical analysis and well log interpretation |

Estimation and assesment of free swelling index and some petro-graphic properties from chemical analysis of coals across river niger (657 KB, pdf) Estimation and assesment of free swelling index and some petro-graphic properties from chemical analysis of coals across river niger |

Optimization and retrofit studies for naphthalene production process (540 KB, pdf) Optimization and retrofit studies for naphthalene production process |

Analysis of the methanol industry and its application from economic standpoint (566 KB, pdf) Analysis of the methanol industry and its application from economic standpoint |

P&C News: Jubilant profesor Viktor MILATA (98 KB, pdf) Jubilant profesor Viktor MILATA |

### Volume 59, 2017, Issue 4

THERMODYNAMIC MODELING OF CARBON DIOXIDE SOLUBILITY IN AQUEOUS SOLUTIONS OF MONOETHANOLAMINE USING TWO PARAMETER EQUATIONS OF STATE BASED ON NON-RANDOM MIXING RULES (1 MB, pdf) THERMODYNAMIC MODELING OF CARBON DIOXIDE SOLUBILITY IN AQUEOUS SOLUTIONS OF MONOETHANOLAMINE USING TWO PARAMETER EQUATIONS OF STATE BASED ON NON-RANDOM MIXING RULES Koolivand- Salooki, S. J. Poormohammadian, P. Darvishi, Asghar Lashanizadegan, pp. 472-488 |

Determination of Collapse and Fracture Pressures for Wellbore Stability Design based on the Mogi-Coulomb Failure Criterion (875 KB, pdf) Determination of Collapse and Fracture Pressures for Wellbore Stability Design based on the Mogi-Coulomb Failure Criterion |

Deposit control agents for lubricating oil (765 KB, pdf) Deposit control agents for lubricating oil |

Synthesis and evaluation of terpolymers as viscosity index improvers and pour point depressants (977 KB, pdf) Synthesis and evaluation of terpolymers as viscosity index improvers and pour point depressants |

An algorithm to improve the speed and accuraсy of analysis of chemical process systems operation (932 KB, pdf) An algorithm to improve the speed and accuraсy of analysis of chemical process systems operation |

Preparation of terpolymer additives and used their as pour point depressant for crude oil (749 KB, pdf) Preparation of terpolymer additives and used their as pour point depressant for crude oil |

Sensitivity analysis on the factors affecting crude oil emulsion stability (633 KB, pdf) Sensitivity analysis on the factors affecting crude oil emulsion stability |