Multi-section fracturing horizontal well liquid production profile test string

Abstract

The invention discloses a multi-section fracturing horizontal well liquid production profile test string. The multi-section fracturing horizontal well liquid production profile test string comprises astring body connected with an oil pipe and a plurality of single-flow hole pipes arranged in the string body, each single-flow hole pipe is correspondingly arranged on a production layer section, anda packer is arranged between every two adjacent single-flow hole pipes; an oil liquid containing cavity is formed in each single-flow hole pipe, a tracer is arranged in each oil liquid containing cavity, and the tracers in the single-flow hole pipes are different in type; and each oil containing cavity is provided with an inlet and an outlet, the inlet of each oil containing cavity is in communication with an oil layer perforation of the corresponding production layer section, the outlet of each oil containing cavity is connected with an inlet of a single-flow channel, and an outlet of each single-flow channel sequentially penetrates through the single-flow hole pipe and the packer at the front end of the single-flow hole pipe to be in communication with the oil pipe. According to the test string, the water yield and the oil yield corresponding to each production layer section of an underground oil layer can be obtained, thus the production dynamic state of each production layer section can be determined, the accurate test of the liquid production profile of a multi-section fracturing horizontal well is realized, and an effective basis is provided for the later implementation of sectional oil extraction and water control and oil stabilization of the horizontal well.

Description

technical field [0001] The invention belongs to the field of oil production engineering in oilfields, and in particular relates to a test pipe string for the fluid production profile of a multi-stage fracturing horizontal well. Background technique [0002] In the process of oil extraction, due to the long horizontal section of the horizontal well and the large number of fracturing sections, the production capacity contribution of different liquid production sections is different, and there is the problem of interlayer interference in the production process. In order to improve the recovery rate of the horizontal well reservoir, it is necessary to To carry out targeted stratification and segmentation of reservoirs, it is necessary to grasp the contribution of fluid production in each segment. [0003] Although the existing liquid production profile test technology can realize the liquid production profile test to a certain extent, there are still problems such as high test d...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a multi-stage fracturing horizontal well fluid production profile test pipe string, which solves the current difficulty in testing the liquid production profile and the problems of interlayer interference, and is suitable for testing the fluid production profile of multi-stage fracturing horizontal wells in oil fields

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