Petroleum instrument salvaging system and salvaging head

Abstract

The present invention discloses a salvaging head for a petroleum instrument salvaging system, which comprises: a lifting part, for connecting a lifting rope; an insertion rod, which is located under the lifting part and used for protruding into a stair-shaped salvaging hole, and is set with a notch on both sides of the free end thereof; two clamping pieces, which are respectively hinged in two notches, and the clamping face thereof can be in hooking fit with a hooking face in the horizontal plane, wherein the hinge part of the two clamping pieces is located on one end thereof, and the other end is set with a pulling rope, wherein the pulling rope is strained gradually as the clamping face rotates to the horizontal plane, and the orientations of the other ends, which are connected with the pulling rope, of the two clamping pieces are opposite to each other; a compression spring, which is set between the other end of each clamping piece and the sidewall of the corresponding notch, for applying a restoring force that makes the clamping face of the clamping piece in the horizontal plane. The invention further discloses a petroleum instrument salvaging system. By the above solutions, the current problems of large labor intensity, low efficiency, high cost and large economic loss caused by salvaging a petroleum instrument via pulling drill rods out of the drilling well can be solved.

Description

FIELD OF THE INVENTION[0001]The present invention relates to the field of petroleum instrument salvaging technologies, and in particular, to a petroleum instrument salvaging system and a salvaging head.BACKGROUND OF THE INVENTION[0002]During petroleum drilling, as the drill rod of a drilling device strikes into the earth gradually, a petroleum instrument (for example, inclinometer) set in the chamber of the drill rod will transmit the detected data to the ground successively, thereby the subsequent processing on the detected data may be realized by a ground device. As the drilling depth increases gradually, the position of the petroleum instrument will be deeper and deeper. It is known that the environment inside a drilling well is severe and it is harmful to the petroleum instrument. Therefore, it often occurs that the petroleum instrument is damaged; correspondingly, it also often occurs that the petroleum instrument is examined and repaired or replaced.[0003]Generally, the petrol...

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Benefits of technology

[0025]It may be known from the description of the above operation that, in comparison with the background technology, when a petroleum instrument is damaged, the salvaging of the petroleum instrument can be realized by employing the salvaging head according to the invention, rather than salvaging the petroleum instrument in the current mode of pulling drill rods out of the drilling well. In comparison with the mode of pulling drill rods out of the drilling well, by employing the salvaging head according to the embodiment of the invention, it can be avoided that the drill rods are salvaged and disassembled one by one, thus the efficiency can be improved, and at the same time, the labor intensity and the cost can be lowered, and the economic loss caused by stopping drilling can also be lowered. Therefore, the salvaging head according to the embodiment of the invention has a good market application prospect in the field of petroleum drilling.

Problems solved by technology

It is known that the environment inside a drilling well is severe and it is harmful to the petroleum instrument.

Therefore, it often occurs that the petroleum instrument is damaged; correspondingly, it also often occurs that the petroleum instrument is examined and repaired or replaced.

In such a mode of replacing or examining and repairing the petroleum instrument, each drill rod needs to be raised to the ground for disassembly, thus problems of large labor intensity and low efficiency, etc., will be caused.

Moreover, drilling must be stopped when the drill rods are pulled out of the drilling well, thus the drilling progress will be delayed, and at the same time, the cost for replacing or examining and repairing the petroleum instrument will be added.

For users with a drilling progress task, the economic loss caused by pulling drill rods out of the drilling well will be greater.

When the petroleum instrument is made at a position of 3000 m by drilling the drill rod, if it is damaged, 100 macrosegments of drill rods need to be successively salvaged and disassembled during pulling drill rods out of the drilling well, and this will at least cost 2-3 days, and manual work is required to disassemble the drill rods.

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