Casing perforation horizontal well liquid-producing profile testing device and testing method and production test integrated pipe column

Abstract

The invention belongs to the technical field of a casing perforation horizontal well liquid-producing profile test and particularly relates to a casing perforation horizontal well liquid-producing profile testing device and testing method and a production test integrated pipe column. The middle part of a base pipe of the device is provided with first liquid inlet holes, and a protection pipe sleeves the base pipe. Plug heads and oil and water absorbing swelling rubber ring sleeves are distributed on two ends of the protection pipe. Release cavities are between the protection pipe and the basepipe, two ends of the release cavities are provided with oil-soluble tracer carriers and water-soluble tracer carriers. Two ends of the protection pipe are provided with channels for a reservoir fluidto enter the release cavities. According to the invention, the disadvantages of the need of tripping pipe string, high requirements of high temperature and corrosion resistance of equipment, difficult entering, too high test cost, short test period and high requirement for a well type of the existing horizontal well liquid-producing profile testing technology of a casing perforation complete wellcan be solved, and the long-term economic and effective long-term test for a horizontal well liquid-producing profile can be carried out without affecting normal production.

Description

technical field [0001] The invention belongs to the technical field of fluid production profile testing of casing perforated horizontal well completion, and in particular relates to a casing perforated horizontal well fluid production profile testing device, a production and testing integrated pipe string and a testing method. Background technique [0002] With the large-scale development of low-permeability, ultra-low-permeability, and tight oil and gas fields in my country, horizontal wells are a widely used development technology for such oil and gas development. And for low-permeability, ultra-low-permeability, and tight oil and gas fields, water injection is often required to increase formation energy. However, with the continuous development, various problems such as local water flooding and uneven fluid production have appeared in the horizontal wells developed by water injection. The profile can be used to determine the water outlet and low production locations, and...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the existing casing perforation and completion horizontal well fluid production profile testing technology, the pipe string needs to be tripped, and the requirements for the temperature and corrosion resistance of the entry equipment are high, the entry is difficult, the test cost is too high, and the test period is short , high requirements on the well type and many other limitations, and it is difficult to meet the economical and effective long-term test of the horizontal well fluid production profile without affecting the normal production. The purpose of the present invention is to provide a casing perforation Horizontal well fluid production profile testing device, production testing integrated string and testing method

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