Foaming agent for foaming gas condensate
(57) Abstract:The invention relates to the production of gas, in particular foaming vodokanalstroi mixture with high, more than 70%, the content of gas condensate. The technical result - foaming vodokanalstroi mixture with high, more than 70%, the content of gas condensate. The invention relates to the use of the drug "Promin" as a foaming agent vodokanalstroi with a mixture of gas condensate over 70%. table 1. The invention relates to the field of gas production, and particularly for foaming vodokanalstroi mixture with high (>70%) content of gas condensate.Known product application processing acidic residue from the sulfuric acid purification of transformer oil with an aqueous solution of ammonia to produce mineralized liquid condensate /1/.However, the ultimate content of gas condensate in the expanded onto the liquid does not exceed 78%.The aim of the invention is a foaming vodokanalstroi mixture containing gas condensate over 70%.This goal is achieved by the application of known drug, "Promin" for the first time as the foaming agent Vodokanal apart "Promin" - 4 perforated-cyclohexanesulfonyl sodium salt:
< / BR>The drug, "Promin" is a crystalline salt with a melting point of 350oWith, partially soluble in cold water, ether, acetone, soluble in hot ethanol.The drug, "Promin" produced by the domestic industry on THE 6-02-28-82 and physico-chemical parameters meets the following requirements:
1. Mass fraction of water not more than 2%.2. The total mass fraction of carbonate and bicarbonate in the dried sample in the range of 60-65%.3. Mass fraction of organic bases of the drug in the range of 30-40% /2/.Used drug for the prevention of pollution of the air of working premises with chromic anhydride in electric plating, and introduced into the electrolyte with a concentration of 2-3 g/l /3/.The drug, "Promin" is used as a surfactant for foaming water, not containing hydrocarbons, solutions to prevent splashing of hot electrolyte plating chromium containing chromium oxide (CR2ABOUT3), that is, to create a foam screen.The proposed use of the drug "Promin" is a new direction composed of hydrocarbon gas condensate from 70% or more and the removal of this mixture in the form of foam from the well to the surface.It is known that the requirements for the reagent to the foam screen requirements reagent for the removal vodokanalstroi mixture from the well are different, as in the first case, the foam is in a fixed (static) state, and the second moves through the tubing in the well, i.e. the requirements for the reagent to be used in the galvanic production and gas production are completely different due to the different specific production.It is also known that the property of the drug, "Promin" lather photoconductive with a mixture of hydrocarbon condensate in them between 70% and above don't know /2/.The use of the drug, "Chromen for foaming vodokanalstroi mixture, possibly due to its chemical structure. The drug, "Chromen has a surface-active group as anionic surfactants (sulfonate, sulfonic acid, and others ).The volume and concentration of the solution of the drug, "Promin" introduced into the well is determined from the calculation of the volume removed fluid from the well and the concentration of gas condensate.The use of the drug "Promin" is as follows.Determine the amount submitted fluid from the well and is undertaken aqueous solution is injected into the annulus when working well. The concentration and quantity of an aqueous solution depends on the parameters of the well.Example. In the laboratory studies have been conducted on the foaming vodokanalstroi mix offered by the foaming agent and the foaming agent (sylphs) of the prototype.Preparing aqueous solutions of foam the same concentration in the base material. Then a mixture of water - surfactant - gas condensate total volume of 200 ml, which was stirred with a mixer type Voronezh for 2 min, quantitatively transferred into the measuring cylinder and determined the ratio of the foam.The research results are summarized in the table.The table shows that the proposed drug, "Promin" spanaway photocontinental mixture containing gas condensate 70% or more.The use of a known drug, "Promin" as the foaming agent will make the liquid from gascondensate wells with the content of gas condensate more than 70%, where traditional surfactants do not give a positive effect.Sources of information
1. A. C. the USSR 1151662, CL E 21 In 43/00, 1984.2. Surfactants. Handbook / edited DTN A. A. Abramson and KTN, M. Gayova. L.: Chemistry,lázně DTN E. I. Levinsky. L.: Chemistry, 1985, S. 238. The use of the drug "Promin" as a foaming agent vodokanalstroi with a mixture of gas condensate over 70%.
FIELD: oil and gas production.
SUBSTANCE: solid foaming agent containing, wt %: carboxymethylcellulose 15-25, sodium sec-alkyl sulfate 5-15 and sodium sulfonate 25-35 (both anionic surfactants), additionally contains: sodium silicate 3-7, sodium carbonate 2-4, disodium ethylenediaminetetraacetate as complexone 1-3, and foaming-enhancing detergent - the rest.
EFFECT: increased efficiency in carrying over formation fluid from bottom of gas and gas condensate wells.
FIELD: oil and gas production.
SUBSTANCE: invention relates to solid foaming agent for carrying over formation fluid from gas well and water/condensate mixture from gas condensate well. Solid foaming agent containing, wt %: carboxymethylcellulose 40.0-50.0, sodium sec-alkyl sulfate 35.0-45.0, and sodium sulfonate as anionic surfactant 25-35 additionally contains: disodium ethylenediaminetetraacetate as complexone 3.0-7,0, sodium carbonate as pH stabilizer 3.0-7.0, and foaming-enhancing detergent - the rest.
EFFECT: improved fluid-carrying ability.
FIELD: oil and gas production industry, in particular two-phase foam forming composition for secondary development of clay grouted stratum with non-uniform permeability by perforation under abnormal law stratum pressure.
SUBSTANCE: claimed composition contains foam forming agent, inhibitor, solvent and water. Bone glue in amount of 4-6 mass % is used as foam forming agent and inhibitor, sodium or potassium hydroxide in amount of 0.2-0.5 % is used as solvent, and balance: water. Composition of present invention makes it possible to produce foam with increased order, stability, inhibiting properties, low filtration factor, improved holding properties and to keep integrity of casing string and cement ring.
EFFECT: increased efficiency of secondary stratum development by perforation.
FIELD: oil and gas production industry, in particular two-phase foam forming composition for development of productive stratum under abnormal law stratum pressure.
SUBSTANCE: claimed composition contains foam forming agent, stabilizer, inhibitor, and processing water. Bone glue in amount of 3-5 mass % is used as foam forming agent, stabilizer and inhibitor, and balance: processing water. Composition of present invention makes it possible to produce foam with increased order, stability, inhibiting and geological properties, low filtration factor, improved holding properties.
EFFECT: increased efficiency of stratum development.
FIELD: gas production equipment, particularly for killing wells with reservoir pressure below hydrostatic pressure and for gas pipeline protection against water and mechanical impurities.
SUBSTANCE: method involves injecting methylcellulose used as gel-forming composition into well, wherein methylcellulose is introduced as foamed aqueous solution and density thereof may be regulated along the whole well borehole height.
EFFECT: possibility to regulate well killing liquid density along well borehole height, increased speed of well killing gel-forming composition production.