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While-drilling jam release device for intelligent drilling

A drilling and jam-releasing technology, which is applied in earthwork drilling, wellbore/well components, etc., can solve problems such as mud bag sticking accidents, achieve the effects of reducing drilling costs, improving drilling safety, and reducing drilling costs

Pending Publication Date: 2020-05-15
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Purpose of the present invention: In order to efficiently, economically and safely solve the problem of mud bag sticking accidents that may occur in the existing oil drilling process, an intelligent drilling while drilling jamming release device is provided. The device has the function of drilling while drilling downhole. Intelligent control can be carried out to reduce drilling non-working time, reduce drilling costs and improve drilling safety

Method used

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  • While-drilling jam release device for intelligent drilling
  • While-drilling jam release device for intelligent drilling
  • While-drilling jam release device for intelligent drilling

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Embodiment Construction

[0017] The technical solution of the present invention will be specifically described below in conjunction with the accompanying drawings.

[0018] Such as figure 1 , figure 2 , image 3 As shown, the intelligent drilling while drilling jam release device of the present invention is mainly composed of an upper joint 1, a lower joint 13, a driving assembly, a liquid spray assembly 8, a locking assembly and a main body intercepting assembly. The tail of the upper joint 1 is connected to the lower joint through threads 13 end connection; the driving assembly is composed of a driving assembly solenoid valve 2, a plunger 4, a spring 6, a central tube 7 and a stopper 5, and the driving assembly solenoid valve 2 is fixed on the upper joint 1 through threaded connection; the plunger 4 passes through the gap Cooperate and install in the hydraulic cavity 3 of the upper joint 1; the end of the lower joint 13 is equipped with a spring 6 to cooperate through the gap; the liquid spray as...

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Abstract

The invention relates to a while-drilling jam release device for intelligent drilling. According to the while-drilling jam release device, through intelligent control over high-pressure drilling fluidand jet scrubbing of a bit mud drum from an annulus, while-drilling jam release is achieved. According to the technical scheme of the while-drilling jam release device for intelligent drilling, a driving assembly is arranged at the junction of an upper joint and a lower joint; the driving assembly is constituted by a driving assembly solenoid valve, a plunger, a spring, a center pipe and a checkblock; a liquid spraying assembly, a locking assembly and a main intercepting assembly are arranged on the upper joint; the liquid spraying assembly is constituted by a spring seat, a liquid sprayingvalve spring, a liquid spraying valve element, a liquid spraying valve seat, a liquid spraying valve deck and a flow pass; the locking assembly is constituted by a locking block and a locking valve seat; and the main intercepting assembly is constituted by a valve plate, a telescopic pin shaft, a torsional spring and a torsional spring close cover. The while-drilling jam release device has a while-drilling jam release function down hole and can be intelligently controlled, the non-working time of drilling is shortened, the drilling cost is reduced, and drilling safety is improved.

Description

technical field [0001] The invention relates to an intelligent drilling-while-drilling device for unblocking. The device intelligently controls high-pressure drilling fluid to spray and flush the drill bit mud bag from the annular space, thereby realizing unblocking while drilling, and belongs to the technical field of oil and gas drilling devices. Background technique [0002] During the drilling process of shale formations, due to the high content of clay minerals in shale (30%-50%), when water-based drilling fluid is used, it is easy to react with water and swell, and the swollen clay is sticky and easy to Adhesion to cutters and bit body causing bit balling. Drill bit bagging will cause the water hole to be blocked during the drilling process, and the chip flute and blade will be wrapped by the bottom of the well, the well wall and cuttings that have not been returned in time, resulting in an increase in pump pressure and a decrease in drilling speed. The generation of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B31/03
CPCE21B31/03
Inventor 肖仕红周士超张辉耀张靖柯柯亚勇
Owner SOUTHWEST PETROLEUM UNIV
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