Profile control technology of oilfield water injection well
The invention provides a profile control technology of an oilfield water injection well. The profile control technology comprises the following steps of (1) preparation of a profile control agent: adjusting the proportional ratio of components of the profile control agent to prepare a primary profil...
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| creator | YE WEIBAO DU KAI LU KAI XU BIAO ZHANG HUAYI QIN CHUANG WANG ZILIE WEN HONGBIN MA ZHONGYUE ZHANG YICHEN |
| description | The invention provides a profile control technology of an oilfield water injection well. The profile control technology comprises the following steps of (1) preparation of a profile control agent: adjusting the proportional ratio of components of the profile control agent to prepare a primary profile control agent, a secondary profile control agent and a tertiary profile control agent of which the strengths are increased; (2) sectional water injection: sequentially injecting the primary profile control agent, the secondary profile control agent and the tertiary profile control agent into the oilfield water injection well, and performing profile control construction, wherein the profile control agent comprises the following components in percentage by mass: 0.3-0.5% of polyacrylamide, 0.3-3% of organic chrome crosslinking agent, 0.1-0.2% of additive, and the balance of water. The profile control technology can well solve the problems of large difference of water absorbing condition of each layer of low-seepage |
| format | Patent |
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The profile control technology comprises the following steps of (1) preparation of a profile control agent: adjusting the proportional ratio of components of the profile control agent to prepare a primary profile control agent, a secondary profile control agent and a tertiary profile control agent of which the strengths are increased; (2) sectional water injection: sequentially injecting the primary profile control agent, the secondary profile control agent and the tertiary profile control agent into the oilfield water injection well, and performing profile control construction, wherein the profile control agent comprises the following components in percentage by mass: 0.3-0.5% of polyacrylamide, 0.3-3% of organic chrome crosslinking agent, 0.1-0.2% of additive, and the balance of water. 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| subjects | ADHESIVES CHEMISTRY DYES EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MINING MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PAINTS POLISHES |
| title | Profile control technology of oilfield water injection well |
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