Drilling tool jam releasing method and device

A technology for drilling tools and jam removal, which is used in earth-moving drilling, wellbore/well components, etc. It can solve problems such as damage to drilling tools, accelerate deformation and damage, realize drilling jam removal operations, and reduce time.

Active Publication Date: 2016-09-21
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the drill sticking accident is resolved by means of explosive loosening, casing milling, and backfilling sidetracking, it will also cause damage to the drilling tool

Method used

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  • Drilling tool jam releasing method and device
  • Drilling tool jam releasing method and device
  • Drilling tool jam releasing method and device

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Embodiment Construction

[0040] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0041] refer to figure 1 Shown, a kind of method for unblocking of drilling tool, this method for unblocking of drilling tool comprises the following steps:

[0042] S101: Obtain the stuck point position of the drilling tool;

[0043] In this step, if Figure 5 As shown, obtaining the position of the stuck point also includes:...

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Abstract

The invention discloses a drilling tool jam releasing method and device. A drilling tool comprises a drill pipe column. The drilling tool jam releasing method comprises the steps of acquiring a jam point position of the drilling tool; placing a jetting device down into the drilling tool according to the acquired jam point position; injecting a hot source into the drilling tool through the jetting device; injecting a cold source into the drilling tool through the jetting device after hot source injection is stopped; judging whether a jam of the drilling tool is released or not, wherein if not, the steps of injecting the hot source and the cold source are repeated until the jam of the drilling tool is released. The jam releasing method changes a single handling method of moving the drilling tool only when the drilling tool is jammed, the temperature difference of rock debris or dropped pieces at the jam point position is changed through the high temperature or the lower temperature, the rock debris or the dropped pieces transform due to the temperature difference, stable stacking structures of the rock debris or the dropped pieces are further changed, transformation and damage of the rock debris or the dropped pieces accumulated at the jam point position are accelerated, and therefore the well drilling jam releasing work is achieved.

Description

technical field [0001] The invention relates to an oil production process, in particular to a method and a device for unblocking a drilling tool. Background technique [0002] Pipe sticking occurs during oil and gas drilling. For example: the collapse of the well wall causes the drilling tool to be stuck by the collapsed rock and cannot be lifted or lowered; another example: during the drilling process, the drilling tool is stuck because the cuttings cannot be carried to the ground in time and accumulate in a certain place underground. [0003] In the prior art, if the stuck drill occurs, the operator will generally move the drilling tool vigorously first, such as pulling the drilling tool upward, rotating the drilling tool downward, vibrating the drilling tool, and back reaming; at the same time, increase the displacement and vigorously flush , take out the rocks at the stuck point step by step to solve the card. It takes a long time to unclog the drilling tool, and the e...

Claims

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Application Information

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IPC IPC(8): E21B31/00
CPCE21B31/00
Inventor 黄雪琴孟庆昆胡贵
Owner PETROCHINA CO LTD
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