FIELD: oil and gas industry.
SUBSTANCE: invention relates to the oil and gas industry, the greatest application can be found in fields, the opening of productive formations of which is carried out on weighted solutions, in fields with a carbonate reservoir or terrigenous reservoir having a carbonate or clay component in the cement. The composition for carrying out works on hydraulic perforation of formations by the methods of slit or helicoid cutting contains, wt%: tetrasodium salt of ethylenediaminetetraacetic acid - 1.0-10.0; secondary sodium alkanesulfonate - 0.1-1.0; sodium chloride - 1.9-19.0; water - the rest.
EFFECT: invention increases efficiency of hydraulic perforation of formations due to additional dispersion of the formation rock during the chemical interaction of the composition for hydraulic perforation with the carbonate or clay component of the formation, facilitates the subsequent extraction of dissolved reaction products from the bottomhole zone, increases the degree of its cleaning.
1 cl, 5 tbl, 4 ex
| Title | Year | Author | Number |
|---|---|---|---|
| PROCESS FLUID FOR BORING, COMPLETION AND MAJOR REPAIRS OF OIL AND GAS WELLS UNDER ABNORMALLY HIGH FORMATION PRESSURE AND ELEVATED TEMPERATURE CONDITIONS | 2002 |
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| REAGENT COMPOSITION FOR DISSOLVING CARBONATE COLMATANT | 2019 |
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| DRILL MUD FOR PRIMARY OPENING OF PRODUCTIVE FORMATION | 2018 |
|
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| CLAYLESS DRILLING MUD | 2006 |
|
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| METHOD FOR COLMATAGE REMOVAL FROM BOTTOMHOLE FORMATION ZONE UPON FIRST OPENING TO RESTORE PERMEABILITY AND POROSITY OF HEADER | 2013 |
|
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| HYDROCHLORIC ACID COMPOSITION FOR REMOVING FILTER CAKE FROM BOTTOMHOLE FORMATION ZONE | 2009 |
|
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| METHOD OF PROCESSING PRIMARILY FLAT HORIZONTAL WELL HOLE FOR REMOVAL OF MUD BULK FROM BOTTOM-HOLE FORMATION ZONE | 2011 |
|
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| CLAY-FREE DRILLING FLUID FOR COMPLETION OF FORMATIONS OF CONTROLLED DIRECTIONAL AND HORIZONTAL WELLS IN CONDITIONS OF ABNORMALLY HIGH FORMATION PRESSURES | 2010 |
|
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| DEVELOPMENT METHOD OF BOTTOM-HOLE ZONE OF TERRIGENOUS OIL FORMATION | 2011 |
|
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| MUDMAX INHIBITED DRILLING MUD | 2020 |
|
RU2737823C1 |
