Abbreviation: J. Petroleum Gas Eng.
Start Year: 2010
Page 1 of 5, showing 20 records out of 81 total, starting on record 1, ending on 20
DOI: 10.5897/JPGE2016.0235 [Article Number: FCD424159410]
During polymer flooding, the behaviors of water injection profile reflect the flooding efficiency and its performance in medium and low permeable layers represents the sweep efficiency of the reservoir. In this work, the polymer flooding wells in Bohai Oilfield is analyzed and the observations on the performance are, with more polymer injected, the injection profile is characterized by: In most of the wells, vertically,... Read more.
DOI: 10.5897/JPGE2015.0215[Article Number: 619B93755047]
Conventional drilling fluids such as diesel and mineral oil have posed some environmental and health challenges in their drilling applications but the introduction of synthetic-base fluids over the past two decades has considerably reduced such challenges. In some cases, a bottom hole temperature above 300°F (150°C) can cause significant instability in the rheological properties of these drilling fluids.... Read more.
DOI: 10.5897/JPGE2014.0209 [Article Number: C80CE0D54586]
During the history matching, attentions are shifted from the structural map and focus are on the dynamic properties such as relative permeability data, saturation end points and Pressure-Volume-Temperature (PVT) information. However, structural maps can inherit huge uncertainty which can affect the dynamic behaviour of the reservoir. The objective of this study is the presentation of an approach for quantifying... Read more.
DOI: 10.5897/JPGE 2015.0217[Article Number: D396AB753755]
In this study, we develop a Galerkin-type finite element (FE) solution to assess the creep deformation of fracture surfaces. These surfaces are treated as comparatively compliant rocks which are separated by a comparatively stiff proppant pack. Viscoelastic properties of fracture surfaces are assessed by the temperature and deformation dependent modulus. The key challenge is to appropriately develop the creep and the... Read more.
DOI: 10.5897/JPGE 2013.0162[Article Number: E2428FD53192]
The research sets about describing the different oil types in the South Sumatra Basin and relating the hydrocarbon to source rocks. Four different groups of oil have been identified; the character of the oils suggests both lacustrine and terrestrial input to the source rocks. Type 1 oils have marine/lacustrine influenced (low pristane/phytane), Type 2 are terrestrially derived (high pristane/phytane ratio), Type 3 are... Read more.
DOI: 10.5897/JPGE 2015.0220 [Article Number: BEB5E7B52628]
Often students of the petroleum engineering programs at the early stage of their studies in institutions of developing countries do not have easy access to the oil and gas industry facilities. Multinational petroleum companies come in with the state-of-the-arts technology, with expatriates who work and leave without technology transfer. Laboratory equipment is very costly to developing institutions of petroleum studies... Read more.
DOI: 10.5897/JPGE 2014.0207[Article Number: EC19C4351740]
Natural gas hydrate (NGH) technology is a feasible alternative to capture associated-gas, which are usually difficult to harness in the stranded and/or marginal oil field. The importance of gas hydrates is related to its potential to be able to contain about 160 Sm3 of gas and 0.85 m3 of water in 1 m3 of gas hydrate at standard temperature and pressure. This feature of natural gas hydrate can be brought to bear in... Read more.
DOI: 10.5897/JPGE 2014.0204[Article Number: D5DDBE550925]
In the Niger Delta, low oil recovery rates less than 30% results mainly due to oil production problems such as water coning, wax deposition and high gas/oil ratios. Meanwhile, the remaining oil becomes a good candidate for EOR methods such as CO2 injection, polymer and foam injection, in-situ combustion and steam injection. But as it stands, the practice of these known methods of enhanced oil recovery is scarce in the... Read more.
DOI: 10.5897/JPGE 2014.0212[Article Number: 413978050087]
Presently, low salinity waterflooding is considered one of the most promising and cost-effective EOR methods. Although the recovery mechanisms are still uncertain, decrease of residual oil saturation and alternation of rock wettability are considered to be main mechanisms of the incremental oil recovery. In addition, laboratory and mathematical studies conducted over recent years suggested that mobility control is also... Read more.
DOI: 10.5897/JPGE 2013.0180[Article Number: 3C2A1DC50083]
Understanding the behaviour of pressure distribution completed in two layered reservoir subject to both active gas cap and bottom water drive mechanisms is very important in reservoir management. To determine the factors that affect pressure distribution of horizontal wells in a layered reservoir subjected simultaneously with a gas-cap at the top and bottom water drives, well completion was carried out in a particular... Read more.
DOI: 10.5897/JPGE 2014.0200[Article Number: 937A25F48317]
Well infilling has become an effective approach to enhance oil recovery (EOR) for many years. Closely spaced wells and water injections can help maintain reservoir pressure and enlarge producing pressure drop, which are beneficial to the low permeability reservoir development. After more than 20 years of water injection in the Ansai low permeability oil reservoir (Changqing Oil Field, China), water cut of wells now... Read more.
DOI: 10.5897/JPGE 2014.0203[Article Number: FA5E23548321]
A practical approach to the evaluation of subcritical multiphase flow through down-hole safety valves (storm chokes) is presented. This method which is independent of the continuous phase is based on the composition of the flowing mixture and the operating temperature and pressure. In the event of single phase flow, the method can also be applied. With this method, we can easily size subsurface safety valves (SSSV)... Read more.
DOI: 10.5897/JPGE 2014.0194[Article Number: 1DF991748325]
A stuck drill pipe has been recognized as one of the most costly and non-productive challenges in drilling operations. Fishing jars are routinely used to un-lock or loosen the stuck (jammed) pipes which in many cases are expensive and the time taken to complete the job can reach several days of continuous jarring. The use of surface mounted vibratory systems has offered an alternative cost effective means to free the... Read more.
DOI: 10.5897/JPGE 2014.0198[Article Number: 5AD451E48215]
The specific gravity of oil shale can be used as a practical tool for estimating total organic carbon (TOC) and the oil yield of shales from a given source. Sixteen random oil shale samples, mostly from the Upper Cretaceous Duwi Formation in Quseir - Safaga district in the Eastern Desert of Egypt, were collected. Experiments were conducted to determine the density, TOC and oil yield of such samples. The study has... Read more.
DOI: 10.5897/JPGE 2014.0192[Article Number: E51344747711]
In the present study, two important groups of factors were studied; the first one corresponds to the Electrocoagulation (EC) process parameters such as current density, pH, electrolysis time and electrolyte concentration that were investigated in terms of their effects on the removal efficiencies of polyaromatic hydrocarbons, specially β-naphthols. The second group of factors analyses the effect of... Read more.
DOI: 10.5897/JPGE 2014.0181[Article Number: 1A8280D45459]
Effect of water encroachment into an underground gas storage reservoir on its storage capacity (verification of inventory) is presented. Inventory verification is to determine the amount of natural gas to be injected into a particular underground reservoir. Reservoir and production history of a depleted oil reservoir, Z-16T, located in the Niger Delta region were obtained for the analyses. A volumetric equation was used... Read more.
DOI: 10.5897/JPGE 2014.0191[Article Number: A8273E745461]
Drilling fluids were formulated from biomaterials such as Brachystegea eurycoma and Detarium micocarpum. The laboratory measurements were carried out, and their rheological properties then evaluated. The drilling properties such as yield point, apparent viscosity, and low shear rate yield point were determined from the experimental data. The field polypac additive that is currently in use was formulated and used as... Read more.
DOI: 10.5897/JPGE203.0176[Article Number: 3973E2B46511]
Pipelines are principal devices for natural gas transportation which are amenable to operational challenges such as leakages. Several methods for predicting leakages in natural gas pipeline have been developed. Some of these techniques detect leakages after several hours while some are prone to false alarms or inaccurate predictions. This study developed a pressure transient analysis model for predicting gas pipeline... Read more.
DOI: 10.5897/JPGE2013.0163[Article Number: 710326D46512]
Waste oil management in Nigeria is not well supervised, hence the indiscriminate disposition into the soil drains and sometimes open water. This has attendant implications on soil and water quality. Need has arisen to evaluate the consequence of such mismanagement on the environment. This study was designed to evaluate the effects of waste oil on the physical and chemical properties of soil in Lagos, and the possible... Read more.
DOI: 10.5897/JPGE2013.0157[Article Number: 146C0D542611]
Steam stimulation has already been proved as an important thermal recovery technology. In Daqing, the development and management of high-heterogeneous heavy oil reservoirs plays an important role in stabilizing the oil output. To combine the good features of steam injection and cyclic injection, a cyclic steam flooding has been conducted in the Fuyv reservoir, Daqing. This paper aims to present a detailed process of the... Read more.
Page 1 of 5, showing 20 records out of 81 total, starting on record 1, ending on 20