4272 results about "Oil production" patented technology

A method for utilizing whole crude oil as a feedstock for the pyrolysis furnace of an olefin production plant wherein the feedstock after preheating is subjected to mild cracking conditions until substantially vaporized, the vapors from mild cracking being subjected to severe cracking in the radiant section of the furnace.

A process for in situ gasification of mineral oil in a subterranean formation comprises running a tool having a controllable thermal device therein from a surface production facility down to the subterranean formation, bringing said tool into operational proximity with the mineral oil in said subterranean formation, and activating the tool to operate the thermal device within a predetermined temperature range to generate gases or oily vapours from said mineral oil, which permits either an enhanced oil recovery (EOR) method with reduced water contamination, or a gas production process (GPP) which is useful in reducing environmental risks normally associated with transport of crude oil.

A process for recovery of hydrocarbons in a production fluid from an underground reservoir of said hydrocarbons, the process comprising of: (a) injecting a viscosity reducing solvent of a fraction of said hydrocarbons into said reservoir at a pressure in the reservoir of above a liquid / vapor phase change pressure of a fraction of said solvent; said pressure in said reservoir also being sufficient to cause geomechanical formation dilation or pore fluid compression, and then, (b) allowing said solvent to mix with said hydrocarbons under pore dilation conditions, and then, (c) reducing the pressure in said reservoir to below said liquid / vapor phase change pressure of at least said fraction of said solvent thereby evincing solvent gas drive of said fraction of said hydrocarbons from said reservoir; and then, (d) repeating steps (a) to (c) as required.

The invention discloses a gas-conducting pressure measuring intermittent producing oil exploitation device. The gas-conducting pressure measuring intermittent producing oil exploitation device makes contact with well liquid during working, the gas-conducting pressure measuring intermittent producing oil exploitation device comprises gas conducting and pressure measuring equipment used for measuring the hydrostatic fluid column pressure, controlling equipment used for receiving data of the gas conducting and pressure measuring equipment so as to control oil pumping equipment to realize intermittent oil production, and the oil pumping equipment making direct contact with the well liquid, wherein the gas conducting and pressure measuring equipment comprises tubular billet pressure measuring equipment and sleeving pressure measuring equipment, the tubular billet pressure measuring device comprises a nitrogen cylinder, a nitrogen booster pump, a capillary steel pipe used for conducting nitrogen, a pressure transmitting cylinder used for bearing the nitrogen and tubular billet pressure sensors connected to an outlet of the nitrogen booster pump and an inlet of the capillary steel pipe which are sequentially connected, and the sleeving pressure measuring device comprises a sleeving pressure sensor connected with the oil pumping equipment. Controller equipment receives data of a data collector to control the working frequency of oil extraction equipment or start and stop of the oil extraction equipment, so that the intermittent production is realized to achieve the effect of reducing the production cost.

A process for the recovery of hydrocarbons from a hydrocarbon bearing formation having an extraction chamber where the extraction chamber has an extraction surface. The process has the steps of heating a solvent, such as propane, and then placing the solvent into the extraction chamber at a temperature and a pressure sufficient for the solvent to be in a vapor state in the chamber and to condense on the extraction surface. The next step is to produce a liquid blend of solvent and heavy oil and then to separate the solvent from said heavy oil. Then the solvent is purified, before being re-injected into the formation again. The purification step removes less condensable fractions from the solvent to ensure a purity that is high enough to support continued heat transfer at extraction conditions. The pressure and temperature are set to levels to cause less condensable fractions to drain away with the liquid bitumen and solvent blend that is produced, thus mitigating heat transfer poisoning.

The method of the invention is applicable to oil production to obtain the impact of technical and economic uncertainties on the economic profitability of a reservoir and / or to optimize the position of a new well in order to meet a development strategy. The invention includes in stage 1, uncertain technical parameters having an influence on the reservoir production are selected; in stage 2, an analytic model expressing the reservoir production in the course of time is determined as a function of the parameters selected in stage 1, from production values obtained by means of a flow simulator; and in stage 3, a model expressing the economic profitability of the reservoir is determined as a function of the technical and economic parameters, from the analytic model determined in stage 2.

A thermal in-situ method and apparatus are provided for recovering hydrocarbons from subterranean hydrocarbon-containing formations such as oil sands, oil shale and other heavy oil systems. Recovery of viscous hydrocarbon by hot fluid injection into subterranean formations is assisted by using a specially designed wellbore with an active hydraulic seal, with a axial communication zone with multiple injection perforations separated from the production perforations by a moveable packer. In addition, a novel downhole thermal sensing apparatus is used to monitor and control oil production. A producing mechanism including pumping equipment lifts the produced oil from the central cavity to the surface.

A method for enhanced production of hydrocarbon fluids from an organic-rich rock formation such as an oil shale formation is provided. The method generally includes completing at least one heater well in the organic-rich rock formation, and also completing a production well in the organic-rich rock formation. The method also includes the steps of hydraulically fracturing the organic-rich rock formation from the production well such that one or more artificial fractures are formed, and heating the organic-rich rock formation from the at least one heater well, thereby pyrolyzing at least a portion of the organic-rich rock into hydrocarbon fluids Pyrolyzing the organic-rich rock formation creates thermal fractures in the formation due to thermal stresses created by heating. The thermal fractures intersect the artificial fractures. As an additional step, hydrocarbon fluids may be produced from the production well. Preferably, the organic-rich rock formation is an oil shale formation.

The invention provides an improved method for extracting heavy oil or bitumen contained in a reservoir. The invention involves directing the formation of a solvent fluid chamber through the combination of directed solvent fluid injection and production at combinations of horizontal and / or vertical injection wells so as to increase the recovery of heavy oil or bitumen contained in a reservoir. The wells are preferably provided with flow control devices to achieve uniform production.

The invention belongs to the field of metal materials and discloses a large-thickness and high-strength quenched and tempered steel plate and a production method thereof. The steel plate mainly consists of the following chemical components by weight percentages: not more than 0.18% of C, 0.1-0.4% of Si, not more than 1.2% of Mn, 0.7-1.7% of Ni, 1.0-1.5% of Cr, 0.4-0.6% of Mo, 0.03-0.08% of V, 0.02-0.04% of Al, 0.0005-0.0020% of B, Fe and unavoidable impurities. The molten steel designed according to the components of the invention can be rolled into the large-thickness steel plate by smelting process, casting process, heating process, rolling process, water cooling process and quenching and tempering process. The steel plate has the advantages of reasonable component design, good comprehensive properties and low production cost, can be applied to off-shore oil production platform engineering, power stations, engineering scaffolds and other industries and has good application prospect.