Controlling Condensate Gas Well by Lubricating and Bleed-Off Method, Case Study

During flow a condensate gas well, downstream pressure dropped many times. The reason was partially plug which was occurred in choke manifold adjustable path due to producing abnormal cutting, junk and debris. Produced debris led to other problems such as malfunctioning in the Christmas tree and subsurface safety valve. The goal of this article is to present the procedure of lubricating and bleed-off method to control a gas well during production when there are malfunctioning in x-mas tree valves and subsurface safety valve. In this paper, other operations such as the Christmas tree substitution with a new one, installing and retrieving blanking plug, and mending subsurface safety valve malfunction are explained stepwise.

TRNSYS simulation of desiccant integrated hybrid cooling and dehumidification system

The traditional air conditioners suffer from performance degradation especially in humid conditions. This is due to fact that the excess moisture level in ventilation air considerably increases latent cooling load of the space to be conditioned. The use of desiccant integrated sensible cooling system can alleviate this problem by controlling the temperature and humidity separately. It also reduces energy consumption for obtaining desired thermal comfort. In the present study, TRNSYS simulation studio project has been developed to perform the simulations of the desiccant dehumidifier coupled HVAC system for different configurations in summer cooling season. Measurements are also carried out to observe the influence of operating parameters on system performance. The obtained results show that the proposed system has ensured a substantial reduction in process air humidity at dehumidifier exit while maintaining the conditioned room comfort.

Development of technologies and technical means for the construction of wells intended for the production of high-viscosity oils

The development of technologies and technical means of well structures intended for the production of highviscosity oils is an urgent problem in the oil and gas industry. The design of well structures is determined by geological factors. The well design should ensure trouble-free construction of a sealed space of a stable channel between the fluid-saturated layers and the earth's surface.

Was glass the classical currency of the yoruba?

“The findings from the archaeological excavations at Ile-Ife include several pits that appeared to be furnace ruins, over 20,000 glass beads, 1,500 crucible fragments (ceramic vessels used in glass production), and several kilograms of glass waste. Results of the analysis show that Ile-Ife glass is chemically distinctive. It is now referred to as high lime high alumina (HLHA) glass — Not Known from Anywhere Else in The World” [1].

Table of chemical elements constructed according to the charges of atomic nuclei

This article presents views on the classification of all known chemical elements, those fundamental components that make up the Earth and the entire Universe.

Reservoir modeling and petrophysical evaluation of kanga field onshore Niger delta.

Reservoir sands from seven wells in Kanga Field in the Onshore Niger Delta was subjected to both petrophysical evaluation and reservoir modeling. Methodologies used are standard methods used in reservoir modeling and petrophysical evaluation. Results from reservoir modeling, shows that six synthetics and four antithetic faults have been identified and these faults are the main structural closure for hydrocarbon accumulation in Kanga Field. Petrophysical analysis showed porosity ranging from (25-27%), (16-27%) and (11-17%) for J100, K100 and L100 respectively. Modeled porosity showed high porosity in J100 and the central part of K100 reservoir. While, low porosity/; is recorded in L100. Water saturation ranges from 20 to 90% in the J100 reservoir, the lowest water saturation value was at the NE, NW and central part of the reservoir. Oil water contact reveals pockets of hydrocarbon in J100 and L100 reservoir. The bulk volume of hydrocarbon saturation closure is (21,954.37) arceft, (209,613.7) acreft and 46,025.51) acreft for J100, K100, and L100 reservoirs respectively. The estimated volumetric for P90 are (4,648,755.06) STB, (16,545,452.38) STB and (9,976,551.38) STB respectively. This study de that the field is viable for hydrocarbon exploration.

Analysis of Engine Performance Parameters with Hydrogen Enrichment in Premixed Spark Ignition Engine Using Fuel Blend

Hydrogen enrichment in internal combustion engines has been a topic of research interest to improve engine efficiencies and reduce carbon emissions. Hydrogen enrichment has garnered more interest than the pure hydrogen powered engines due to less complexity involved with the modifications of the engine and fuel system as well as the infrastructure required for it. Similarly, accurate chemical kinetics has proved to provide accurate results in terms of engine performance parameters, such as, in-cylinder pressure. The present study is an extension of study performed earlier with hydrogen enrichment in gasoline direct injection engine while using C8 H17 as a surrogate fuel for gasoline and assumes that an on-board electrolysis system installed on the vehicle produces hydrogen for the enrichment purposes. A mesh independent study is performed using 90% iso-octane (iC8 H18) and 10% n-heptane (nC7 H16) blend as a gasoline surrogate with hydrogen enrichment of 0%, 1%, 2% and 3% at equivalence ratios of 0.98 and 1.3, in a premixed spark ignition engine. Numerical simulations are performed to calculate and compare the thermal and combustion efficiencies of the engine using hydrogen-enriched fuel versus iso-octane and n-heptane blend. The study also predicts and measures the engine performance parameter of in-cylinder pressure, while comparing the iso-octane and n-heptane blend against the blend enriched with hydrogen. Based on the results obtained from smaller hydrogen enrichment concentrations, the study increases the hydrogen-enrichment of the fuel to 5%, 10% and 15% to analyse the effects of enrichment on the thermal and combustion efficiencies, as well as the in-cylinder pressure.

Reducing Climate Impact

Studies of water vapor in the atmosphere can provide new insights into the mechanisms of precipitation and climate. Studies of the structures of water in a liquid state are well known. Less in solid and gaseous forms. Converting in the womb of living organisms and plant capillaries, waste substances, after leaving the body, fulfill their mission in the next link in the food chain - they distribute information about their source in the form of odors, pheromones and phytoncides. All volatile substances secreted by plants and living things have their own purpose - they create communicative connections between themselves and between species - the basis for the existence of the entire biota.

Technology of Crack Formation in Wellbore Zone

The most effective methods of well treatment, such as hydraulic fracturing, torpedoing and chemical treatment, are complicated, expensive, unsafe and unsustainable and, most importantly, insufficiently effective. We have proposed a new cost-effective, environmentally friendly and efficient well treatment technology, which has been developed over 20 years and patented many times.

Theoretical study of optical properties of optical anti-reflection films

In this paper, the theoretical calculation of the characteristics of the optical film, including the basic theory of the film, the calculation of the characteristics of the single-layer film, and the calculation of the characteristics of the multilayer film, to achieve a certain degree of understanding of the characteristics of the optical film. And through the optical anti-reflection film The design principle, material selection, and process mastering have a deeper understanding of the anti-reflection film. The transmission spectrum is used to calculate the “envelope method” The refractive index, thickness, absorption coefficient, an extinction coefficient of the film to analyze the optical performance of the film.