Light and convenient resistance meeting preventive pressured cable lowering conveyor

Abstract

A light and convenient resistance meeting preventive pressured cable lowering conveyor comprises a blowout control sealing mechanism, a pressured cable lowering conveying mechanism and a cable resistance meeting alarming mechanism which are sequentially arranged from top to bottom and are connected mutually in a threaded manner. The blowout control sealing mechanism realizes double-stage hydraulic sealing, is reliable in sealing and is specially provided with an overflow opening, overflowing liquid can be collected to a storage barrel, and a wellhead is pollution-free; the pressured cable lowering conveying mechanism drives a gear to realize transmission by the aid of a motor, a squeezing wheel squeezes, conveying operation is realized, work is reliable, and a tester can normally make a trip in a well assuredly; and the cable resistance meeting alarming mechanism organically combines a cable tension structure with a signal transmitting structure, can alarm in time when the tester meets resistance or is jammed, and prevents severe accidents that a cable is twisted and broken, and the tester drops in the well.

Description

technical field [0001] The invention relates to a test well cable well drilling equipment, in particular to a portable anti-impedement type cable drilling well conveying device. Background technique [0002] At present, the testing of oil and water wells in oil fields is to use cables to lower the tester into the well to test parameters such as bottom hole pressure, bottom hole flow rate and bottom hole temperature. Through the analysis of test data, the production changes of oil and water wells are grasped, and certain production measure. When the instrument encounters resistance or gets stuck at a slow or stopped speed during the lowering process, the ground staff will continue to lower the cable without knowing it, causing the cable to twist in the well, and the tester will not be lowered to the test layer, failing to achieve the purpose of the test , and when the tester is pulled out, the cable breaks off and the instrument falls into the well, causing significant econo...

AI Technical Summary

Problems solved by technology

When the instrument encounters resistance or gets stuck at a slow or stopped speed during the lowering process, the ground staff will continue to lower the cable without knowing it, causing the cable to twist in the well, and the tester will not be lowered to the test layer, failing to achieve the purpose of the test , and when the tester is pulled out, the cable breaks off and the instrument falls into the well, causing significant economic losses to the oil field. In addition, the current cable downhole device with pressure is bulky and requires a crane. Every time it is installed at the wellhead, a crane and a transport vehicle are required. , can be installed at the wellhead, which is not applicable in Yumen Oilfield and Yan'an Oilfield, because oil and water wells are located on hillsides or ravines, it is very difficult and dangerous for large vehicles to enter, which seriously affects the testing of oil and water wells and the normal management of oil and water wells

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