首页> 外国专利> METHOD OF TREATMENT OF BOTTOM-HOLE ZONE OF HIGH- TEMPERATURE LOW-PERMEABILITY SAND-ARGILLACEOUS RESERVOIRS OF JURASSIC DEPOSITS OF LATITUDINAL OF REGION

METHOD OF TREATMENT OF BOTTOM-HOLE ZONE OF HIGH- TEMPERATURE LOW-PERMEABILITY SAND-ARGILLACEOUS RESERVOIRS OF JURASSIC DEPOSITS OF LATITUDINAL OF REGION

机译:区域低纬度侏罗系沉积高温低渗砂砂岩型储层底孔带的处理方法

摘要

FIELD: oil and gas producing industry. SUBSTANCE: method includes successive injection of reagent and buffer fluid into formation. Buffer fluid is used in form of mutual solvent and reagent in form of acid composition with mutual solvent. Prior to injection of reagent, buffer fluid is injected. treatment is carried out in dynamic conditions without letting stand for reaction with no stopping at stages of injection and completion and also between them. Acid composition is used in form of butylcelvosolve, or its mixture with isopropyl alcohol. EFFECT: higher efficiency of acid treatment due to increase of penetrating capacity of acid composition into low-permeability formation and fuller removal of spent solution and reaction products from treatment zone. 3 cl
机译:领域:石油和天然气生产工业。物质:该方法包括将试剂和缓冲液连续注入地层中。缓冲液以互溶剂的形式使用,试剂以酸成分与互溶剂的形式使用。在注入试剂之前,先注入缓冲液。在动态条件下进行处理,不要让反应发生,在注入和完成阶段以及它们之间也不会停止。酸组合物以丁基celvosolve或其与异丙醇的混合物形式使用。效果:由于酸组合物对低渗透性形成的渗透能力增加以及从处理区更充分地除去废液和反应产物,因此酸处理效率更高。 3厘升

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