31-03-1999 дата публикации
Номер: CN0001212319A
Принадлежит:
The present invention relates to a cross-borehole high-temp. tracer technology for heavy crude production by steam injection displacement or high-temp. hot water injection displacement in viscous crude field. Said invented technology is implemented by adopting the following steps: using sodium nitrate or potassium nitrate as tracer; calculating the dose of tracer; preparing tracer aqueous solution; puping the tracer aqueous solution into steam injection well or high-temp. hot water injection well; normal steam injection or high-temp. hot water injection; sampling and detecting; and according to the detected data, analyzing and judging cross-borehole underground fluid movement condition, etc.. The tracer adopted by said invention is high-temp. resistant, high in detection sensitivity, low in stratum background concentration, less in interference with detection accuracy, does not block stratum, has no pollution to environment, has no poison for human and animals and has no corrosion ...
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