Horizontal well dragging type liquid producing section testing tubular column and testing method thereof

Abstract

The invention relates to a horizontal well dragging type liquid producing section testing tubular column which comprises an oil pipe and a sleeve. The oil pipe is located in the sleeve. The oil pipe and the sleeve pipe each comprise a horizontal segment and a vertical segment. The horizontal segment of the oil pipe is sequentially provided with a guide plug, a hole pipe, a producing section tester, a first communicating pipe and a second communicating pipe from the toe portion to the heel portion, and an oil well pump is arranged in the vertical segment of the oil pipe. The producing section tester is connected with a cable, and the cable is connected to well mouth equipment through a three-way guide pipe arranged at the bottom of the oil well pump in the vertical segment of the oil pipe. The horizontal segment of the sleeve is provided with a plurality of perforation segments. According to the testing tubular column, the producing section tester is pre-arranged in the oil pipe, the cable is dragged in the oil pipe to drive the producing section tester in the testing period to test the liquid producing amount and water content of different combined layer segments, the ground does not need to be manually measured, the cable transmits data in real time, the liquid producing amount and water content condition of each layer segment are analyzed in real time, liquid producing information of each producing layer segment of a horizontal well is known in time, and bases are provided for water-flooding development adjusting and later water plugging of the horizontal well.

Description

technical field [0001] The invention relates to the technical field of oil production in oilfields, in particular to a horizontal well dragging fluid production profile testing string and a testing method thereof. Background technique [0002] With the prolongation of oilfield development time, the number of horizontal wells has gradually increased. During the production process of horizontal wells, it is necessary to frequently test the segmented fluid production profile to grasp the downhole fluid flow in time, so as to provide a basis for the adjustment of horizontal well water injection development and later water shutoff. Since the test section of the horizontal well is horizontal, it is impossible to use the instrument's own weight to send the instrument to the test section. At present, the fluid production profile testing technology of horizontal wells mostly uses a tractor in the casing to drive the combined testing instrument into the downhole horizontal section for...

AI Technical Summary

Problems solved by technology

The crawler method test instrument is expensive and expensive

[0003] At the same time, the low-flow horizontal well test response in the casing is low, and there is a problem of distortion of test results.

Therefore, the liquid production profile test of horizontal wells has not been well and extensively carried out, especially the segmental test of the liquid production profile of low-flow mechanically produced horizontal wells is more difficult.

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