Tracing screen pipe

Abstract

The invention provides a tracing screen pipe, and relates to the technical field of oil and gas production equipment. The tracing screen pipe comprises an oil casing pipe, a filtering sleeve and a tracing ring, wherein a through hole is formed in the pipe wall of the oil casing pipe; filtering net holes are formed in the side wall of the filtering sleeve, the outer surface of the oil casing pipe is sleeved with the filtering sleeve, one end of the filtering sleeve is connected with the outer wall of the oil casing pipe, and a gap is formed between the inner surface of the filtering sleeve andthe outer surface of the oil casing pipe; a containing space is formed in the tracing ring and filled with a tracer agent, the two ends of the tracing ring are communicated with the containing space,the oil casing pipe is sleeved with the tracing ring, one end of the tracing ring is connected with the other end of the filtering sleeve and communicated with the gap, and the other end of the tracing ring is connected with the oil casing pipe and communicated with the through hole. According to the tracing screen pipe, all produced oil, gas and water pass through the tracing ring and make contact with the tracer agent filled in the tracing ring, the oil, the gas and the water carry the tracer agent, the yield of the oil, the gas and the water of a corresponding reservoir can be accurately obtained, and the change condition of products of the corresponding reservoir can be obtained.

Description

technical field [0001] The invention relates to the technical field of oil and gas production equipment, in particular to a tracer screen. Background technique [0002] In the process of oil and gas production, in order to better follow up the production and understand the production status of the oil well, it is necessary to know the information of each reservoir of the oil well, that is, to obtain the production status of oil, gas, and water in each reservoir. [0003] In the prior art, a tracer unit with a tracer chemical agent is arranged between the filter screen of the sand control screen and the internal oil casing, so that the oil, gas, and water passing through the filter screen can be mixed with the tracer chemical agent. However, in order to ensure that oil, gas, and water pass through the filter screen normally and enter the oil casing, the tracer unit cannot be arranged at all positions of the filter screen of the entire sand control screen, and can only be dist...

AI Technical Summary

Problems solved by technology

However, in order to ensure that oil, gas, and water pass through the filter screen normally and enter the oil casing, the tracer unit cannot be arranged at all positions of the filter screen of the entire sand control screen, and can only be distributed on the filter screen at circumferential intervals. Between the casing and the oil casing, this leads to the fact that not all the oil, gas, and water entering the oil casing through the filter can contact the tracer unit, so the existing technology cannot accurately obtain the oil, gas, water production, and output changes

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