Control tool for layered productivity acquisition

Abstract

The invention provides a control tool for layered productivity acquisition. The control tool comprises an upper joint, a lower joint and a central tube, wherein the upper joint and the lower joint areconnected through the central tube, the lower joint can slide on the central tube, a rubber sleeve is arranged on the outer wall of the central tube between the bottom of the upper joint and the topof the lower joint, an inner tube penetrates the upper joint and the central tube and forms a seal cavity with the upper joint, a track tube is arranged in the middle of the inner tube, and an inner tube guide hole is designed in the lower part of the inner tube; a slide ring is arranged in the upper joint, one end of a slide nail is arranged in the slide ring, the other end can slide in the tracktube, and layer shifting is realized through movement of the slide nail in the track tube and rotation of the slide ring. The control tool has the beneficial effects as follows: pressure of an air control pipe can be increased or relieved by a switch on the ground, rotary production control of three downhole layers is realized, mechanical reversing is adopted, structure is simple, and layer shifting is reliable.

Description

technical field [0001] The invention relates to the field of supporting tools for oil production and oil testing in oil fields, and more specifically relates to a layered production control tool. Background technique [0002] In the field of oil well testing and layered oil recovery technology in oil fields, when it is necessary to understand the productivity of each layer, it is often used to shoot a layer and then produce for a period of time, and then drill a drillable bridge plug to block it and then shoot a layer. production until the production capacity of each layer is clearly understood, and the bridge plugs that have entered the well still need to be drilled and removed. From the layered production to the drilling of the bridge plugs, a lot of manpower is wasted and oil well workover Well operations take longer. Using the electric control switch method to carry out layered production understanding requires three electric control switches to be installed, the proces...

AI Technical Summary

Problems solved by technology

[0002] In the field of oil well testing and layered oil recovery technology in oil fields, when it is necessary to understand the productivity of each layer, it is often used to shoot a layer and then produce for a period of time, and then drill a drillable bridge plug to block it and then shoot a layer. production until the production capacity of each layer is clearly understood, and the bridge plugs that have entered the well still need to be drilled and removed. From the layered production to the drilling of the bridge plugs, a lot of manpower is wasted and oil well workover Well operations take longer

Using the electric control switch method to carry out hierarchical production cognition, three electric control switches need to be installed, the process is also more complicated, and the process cost is relatively high

Images