Foreign practice and domestic experience with oil and gas production on the continental shelf indicate that the technicoeconomic indicators of the rigging and operation of deep-water platforms should be improved in the following directions:an increase in the number of wells per group to reduce the overall number of platforms in the field; multistory arrangement of production equipment on the platforms for well drilling and the recovery, collection, and preparation for transport of well production; use of automated assembly-unit equipment and its arrangement in unit modules to industrialize and reduce the time required for construction-assembly operations; and, broad implementation of automation and telemechanization of production processes to improve the safety of working conditions and fire safety.The most expedient production scheme for installations used in the preparation and transport of production to shore structures (SS) is determined as a function of the individual characteristics of each gas, gas-condensate, and oil field -the geographical location, depth of water, distance to the shoreline, the initial stratal pressure, the composition and physicochemical properties of the raw material, and the natural-chemical conditions. Three stages of gas processing are carried out.First. The gas is partially treated on the platform; this consists in extracting water vapor and a portion of the heavy hydrocarbons from the gas. The gas and condensate flows are fed through separate lines to the shoreline, where their further treamaent is carried out. In that case, short distances from the shore and a relatively even bottom relief are desirable. The alternate scheme in question permits the formation of a liquid phase in the gas pipeline from platform to shore.Second. The gas is treated on the platform, i.e., deep extraction of water and heavy hydrocarbons from the gas. The dew point of the gas with respect to those of the water and hydrocarbons ensures operation of gas lines in a virtually dry regime.Third. Water is separated from the stratal production. The gaseous and liquid hydrocarbon phases are then transported together to the shoreline.The production schemes of these installations differ little from the schemes of similar installations operating in normal fields on dry land. Quality gas indicators are obtained using the minimum required number of production techniques for a certain operating regime.The extent to which the condensate is treated in these installations is determined by the method of its transport, which depends on the amount of condensate, the distance between the platform and shoreline, the production life of the fields, etc. Depending on these factors, the mixture of liquid hydrocarbons can be stabilized to commercial condensate in conformity with OST 51.65-80 or subjected to partial degassing.Considering the high cost of production areas on a standard off-shore platform (SOP), and also the large outlays for production processes involving preparation of the raw material for transport, production op...
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