Strong-inhibition circulating micro-foam drilling fluid or completion fluid

Strong-inhibition circulating micro-foam drilling fluid or completion fluid

The present invention discloses one kind of recyclable microbubble drilling and completing fluid, which includes basic slurry comprising bentonite 2-3 (in weight portions, the same below), salt tolerant clay 2-3, sodium carbonate 0.2-0.3 and water 100; and additives comprising composite inhibitor SD...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SUI CAIYUN, ZHUANG ZHIWEI, CUI GENYU, ZHOU AIZHAO, SUI YUEHUA, LIU QUANJIANG, GUAN FANG, CHENG XIAOHUA
Format: Patent
Sprache:chi ; eng
Schlagworte:
ADHESIVES
CHEMISTRY
DYES
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
POLISHES
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Beschreibung
Zusammenfassung:The present invention discloses one kind of recyclable microbubble drilling and completing fluid, which includes basic slurry comprising bentonite 2-3 (in weight portions, the same below), salt tolerant clay 2-3, sodium carbonate 0.2-0.3 and water 100; and additives comprising composite inhibitor SD-YZ 1-5, low density tackifier SD-LVC 0.5-3, low density filter loss reducing tackifier SD-LAC 1-3, low density flow form regulator SD-LRC 1-5 and low density regulator SD-LDC 1.5-2.5. The recyclable microbubble drilling and completing fluid has several functions of inhibiting the hydrating expansion of mudstone and protecting oil and gas reservoir, is suitable for different types of stratum. It is applied in well drilling and well completing construction, especially, for low pressure and low permeation stratum.