The Experts below are selected from a list of 30 Experts worldwide ranked by ideXlab platform

Emmanuel E. Anyanwu - One of the best experts on this subject based on the ideXlab platform.

  • optimizing the benefits of conversion of depleted oil reservoirs for underground natural gas storage in nigeria
    AFRREV STECH: An International Journal of Science and Technology, 2012
    Co-Authors: Charley Iyke Anyadiegwu, Emmanuel E. Anyanwu
    Abstract:

    Underground natural gas storage in depleted oil reservoir was examined with reservoir Z-16T located onshore in Nigeria. The geological information and the production history of the reservoir were gathered, which aided in the computation of the storage capacity at a given pressure as well as at various pressures. The plot of well flowing pressure, Pwf against flow rate, Q shows the deliverability of the reservoir at various pressures. The study which its objectives are to check the suitability of reservoir Z-16T for underground gas storage and to determine the benefits of operating the reservoir as a storage system, shows that the reservoir is ideal for the purpose. The benefits which were derived from the process of operating the storage system include: (1) utilization of the abandoned oil wells of known production histories; (2) recovery of substantial quantities of oil that otherwise might not have been recovered; (3) converting partially depleted oil reservoirs to total depletion types; (4) secondary recovery practice through continuous gas Repressuring and repeated gas cycling; (5) producing vaporized oil as natural gas liquids or condensates; (6) preventing the huge wastage of gas through flaring; (7) stopping the greenhouse emission and attracted penalty; (8) utilising already existing facilities Keywords : Natural gas, depleted reservoir, storage, deliverability, leakage, injection, pressure, benefits, secondary recovery, gas flaring

Charley Iyke Anyadiegwu - One of the best experts on this subject based on the ideXlab platform.

  • optimizing the benefits of conversion of depleted oil reservoirs for underground natural gas storage in nigeria
    AFRREV STECH: An International Journal of Science and Technology, 2012
    Co-Authors: Charley Iyke Anyadiegwu, Emmanuel E. Anyanwu
    Abstract:

    Underground natural gas storage in depleted oil reservoir was examined with reservoir Z-16T located onshore in Nigeria. The geological information and the production history of the reservoir were gathered, which aided in the computation of the storage capacity at a given pressure as well as at various pressures. The plot of well flowing pressure, Pwf against flow rate, Q shows the deliverability of the reservoir at various pressures. The study which its objectives are to check the suitability of reservoir Z-16T for underground gas storage and to determine the benefits of operating the reservoir as a storage system, shows that the reservoir is ideal for the purpose. The benefits which were derived from the process of operating the storage system include: (1) utilization of the abandoned oil wells of known production histories; (2) recovery of substantial quantities of oil that otherwise might not have been recovered; (3) converting partially depleted oil reservoirs to total depletion types; (4) secondary recovery practice through continuous gas Repressuring and repeated gas cycling; (5) producing vaporized oil as natural gas liquids or condensates; (6) preventing the huge wastage of gas through flaring; (7) stopping the greenhouse emission and attracted penalty; (8) utilising already existing facilities Keywords : Natural gas, depleted reservoir, storage, deliverability, leakage, injection, pressure, benefits, secondary recovery, gas flaring

Walter B Ayers - One of the best experts on this subject based on the ideXlab platform.

  • thermogenic and secondary biogenic gases san juan basin colorado and new mexico implications for coalbed gas producibility
    AAPG Bulletin, 1994
    Co-Authors: Andrew R Scott, W R Kaiser, Walter B Ayers
    Abstract:

    The San Juan basin is the most prolific coalbed gas basin in the world with 1992 production exceeding 440 Gcf (FOOTNOTE *) (12.4 billion m3), resources of approximately 50 Tcf (1.4 trillion m3), and proved reserves of over 6 Tcf (170 billion m3). Coalbed gas wells with the highest production (initial potential greater than 10 Mcf/day or 0.28 million m3/day) occur in the overpressured, north-central part of the basin. Hydrologic analysis indicates that overpressure in the Fruitland Formation is artesian in origin and represents Repressuring that developed during the middle Pliocene. Highly permeable, laterally continuous coal beds override abandoned shoreline Pictured Cliffs sandstones and extend to the elevated recharge area in he northern basin to form a dynamic, regionally interconnected aquifer system. Coal rank and basin hydrodynamics control the composition of Fruitland coalbed gases, which varies significantly across the basin. Chemically dry gases in the north-central part of the basin coincide with meteoric recharge and regional overpressure. The consistency of methane ^dgr13C values across the basin, the presence of isotopically heavy carbon dioxide in coalbed gases and bicarbonate in formation waters, and biodegraded n-alkane distributions of some coal extracts indicate that coalbed gases in the north-central basin are a mixture of thermogenic (25-50%), secondary biogenic (15-30%), and migrated thermogenic (12-60%) gases. Migrated, conventionally and hydrodynamically trapped gases, in-situ generated secondary biogenic gases, and solution gases result in gas content that plot on or above the coal sorption isotherm. Bacteria transported basinward in groundwater flowing from the elevated northern basin margins metabolized wet gas components, n-alkanes, and organic compounds in the coal and generated secondary biogenic methane and carbon dioxide subsequent to coalification, uplift, erosion, and cooling. These gases may be limited to basin margins, where shallow depths and structural deformation result in higher permeability, or may extend more than 35 mi (56 km) basinward from the recharge zone. The presence of appreciable secondary biogenic gas indicates an active dynamic flow system with overall permeability sufficient for high productivity. Basin hydrogeology, reservoir heterogeneity, location of permeability barriers (no-flow boundaries), and the timing of biogenic gas generation and trap devel pment are critical for exploration and development of unconventional gas resources in organic-rich rocks.

Caballero Megía Marc - One of the best experts on this subject based on the ideXlab platform.

  • Development of an application for the dynamic simulation of hydrocarbon vessels and pipes depressuring system (blowdown)
    Universitat Politècnica de Catalunya, 2019
    Co-Authors: Caballero Megía Marc
    Abstract:

    One of the most iconic pictures of the oil and gas industry is a flare. This system is used to avoid direct hydrocarbon release to the atmosphere, because the pollution effect of them is much worse than the CO2 after its burning. This hydrocarbon release is driven by a pressure relief valve (PRV) due to overpressure situations, for security reasons. The depressuring of vessels and pipes is an important scenario to study in the equipment or plant design, because hydrocarbons are stored at high pressure, so when depressuring occurs, low temperatures can be reached by the hydrocarbon expansion to low pressures. These low temperatures can get around -40ºC, where are below the ductile-brittle transition temperature of commercial carbon-steel, which is the most common material for vessels and pipes. The simulation of the blowdown is then crucial for plant security analysis and design. Some commercial process simulators have already tools for simulating blowdown, but none of them allow to include it to any dynamic simulation. Due to the importance of dynamic simulation by its realistic behaviour, is necessary to develop an application/utility that could allow including blowdown to dynam

Ramharack, Richard M. - One of the best experts on this subject based on the ideXlab platform.

  • Impact of carbon dioxide sequestration in depleted gas-condensate reservoirs
    The Research Repository @ WVU, 2010
    Co-Authors: Ramharack, Richard M.
    Abstract:

    Depleted gas-condensate reservoirs are becoming important targets for carbon dioxide sequestration. Since depleted below the dew point, retrograde condensate has been deposited in the pore system and may be temporarily or permanently trapped in the reservoir, causing severe reductions in gas production rates and the permanent loss of a large portion of the volatile and valuable condensate liquids. Carbon dioxide injection in the depleted gas-condensate reservoirs may allow enhanced condensate recovery by liquid revaporization and reservoir repressurization or pressure maintenance.;The purpose of this research study was to develop a gas-condensate reservoir model using a compositional simulator to investigate the impact carbon dioxide injection on enhanced condensate recovery and to determine the increase in the amount of carbon dioxide being sequestered due to condensate recovery. A practical injection schedule was developed where carbon dioxide is both used in Repressuring the depleted reservoir followed by cycling in order to achieve an effective and efficient enhanced recovery schedule.;The injection schedule has shown to increase recovery by 63% and achieve a total liquid recovery of more than 90%. Also, enhanced condensate recovery has shown to increase the amount of carbon dioxide being sequestered into a depleted gas-condensate reservoir by 15%