Pushing-leaning type three-arm temperature logging instrument

Abstract

The invention discloses a pushing-leaning type three-arm temperature logging instrument. An electronic instrument short section is arranged at the upper end of the instrument to provide electric energy for a power short section, and a probe short section is controlled through the power short section, and a signal returned by the probe short section is received. The power short section provides power and control for the probe short section, is arranged at the lowermost end and is connected with the probe short section through threads and a sealing assembly. The probe pup joint is located in themiddle of the instrument, three temperature sensors can be attached to the sleeve through a pushing-leaning action, the continuous measurement is conducted, and the sensors can be withdrawn into theinstrument shell after measurement is completed. The diameter measuring instrument provided by the invention can go down into the annulus of the inner pipe and the two layers of pipe columns for testing or measuring; a plurality of built-in temperature probes can obtain temperature data in a plurality of directions at the same time, and the data coverage is good; when the probe does not work, theprobe is recovered, so the possibility of resistance and blockage is reduced; and the pushing-leaning state can be changed according to the inner diameters of different measuring tubes, so a pushing-leaning force is consistent, and the comparative analysis of measured data is facilitated.

Description

technical field [0001] The invention relates to oil well logging technology, and is an instrument used in the field of production logging, especially in concentric double-pipe separate injection process wells, in particular a push-back type three-arm temperature logging instrument. Background technique [0002] Domestic oil fields currently adopt a new water injection process, that is, the concentric double-pipe separate injection process. The concentric double-pipe separate injection process is to lower the 1.9-inch inner pipe into the 3.5-inch oil pipe, and the lower part of the pipe string uses a sealing device to separate the inner pipe from the annulus of the two-layer pipe string. The lower layer is injected through the inner pipe, and the upper layer is injected into the annulus of the two-layer string. Compared with the traditional water injection process, this water injection process has the advantages of no need for regular testing and deployment, and the ground m...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a push-on three-arm temperature logging tool to solve the problem that the lo

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