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Novel method for preventing clamping accident and backing pressure phenomenon in oil and non-oil drilling

A preventive method, non-petroleum technology, applied in drilling equipment and methods, drilling equipment, drill pipes, etc., can solve problems such as underpressure, high cost of drilling fluid, sticking accidents, etc.

Active Publication Date: 2019-03-22
王文超
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to provide a new method for preventing sticking accidents and back pressure phenomena, so as to solve the following problems in the prior art: 1. The problems of oil and non-oil sticking accidents and back pressure phenomena; Non-oil drilling (safety and efficiency) and high cost of drilling fluid

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  • Novel method for preventing clamping accident and backing pressure phenomenon in oil and non-oil drilling
  • Novel method for preventing clamping accident and backing pressure phenomenon in oil and non-oil drilling
  • Novel method for preventing clamping accident and backing pressure phenomenon in oil and non-oil drilling

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Embodiment Construction

[0017] The technical solutions in the embodiments of the present invention will be described in detail below in conjunction with the embodiments of the present invention. It should be noted that, in the case of no conflict, the embodiments in the application and the features in the embodiments can be combined with each other . The present invention will be described in detail below in conjunction with examples.

[0018] As introduced in the background technology section, in the prior art, there are raw materials used to reduce the coefficient of friction in the drilling construction process, which do not play the role of anti-sticking in the drilling construction. In order to solve this problem, in a typical implementation of the present invention, a new method for preventing sticking accidents and back pressure phenomena is provided. The new method includes the following steps:

[0019] , Increase the low-pressure air bag of the pump to reduce the vibration amplitude of th...

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Abstract

The invention provides a novel method for preventing a clamping accident and a backing pressure phenomenon in oil and non-oil drilling. The drilling method comprises the following steps: the step S1 of increasing a low pressure air bag of a pump to reduce the vibration amplitude of a drilling rig, wherein the working pressure of a high pressure air bag is 1 / 3 that of the pump, is dynamic and changes with the working pressure; adding a shock absorber to the drilling rig; the step S4 of controlling the lowering speed (10m / min (applying hydraulic brake according to the operating rules), and avoiding severe vibration of the drilling rig caused by severe vibration of a big rope. According to the method, the occurrence of the wrap angle (contact angle) is controlled, and the clamping accident and the backing pressure phenomenon of the oil and non-oil drilling are prevented.

Description

technical field [0001] The invention relates to the fields of petroleum and non-petroleum drilling, in particular to a new method for preventing sticking accidents and underpressure phenomena. Background technique [0002] At present, the main method of anti-sticking is to reduce the friction coefficient, and take measures: one is to mix oil into the drilling fluid; the other is to add surfactants to the drilling fluid to make the surface of the drilling tool wet and reverse to an oil-wet surface. So as to achieve the purpose of reducing the friction coefficient; the third is to add solid powder, plastic balls, and glass microspheres (they exist between the drill string and the well wall like balls) in the drilling fluid to change the sliding friction into rolling friction, thereby greatly Significantly reduce torque and friction. However, according to the records of the United States "Petroleum Digest" in recent years, sticking accidents still occur frequently after foreig...

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Application Information

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IPC IPC(8): E21B7/00E21B17/07E21B21/00
CPCE21B7/00E21B17/07E21B21/00
Inventor 王文超王呈呈
Owner 王文超