A turbo-type drilling speed-increasing tool with a new type of valve structure driven by a cylindrical cam

A cylindrical cam and turbine type technology, which is applied in drilling equipment, valve operation/release devices, driving devices for drilling in boreholes, etc., can solve unsatisfactory vibration effects, sticking under pressure, and low rock-carrying capacity of drilling fluid and other problems, to achieve the effect of improving drilling efficiency, simple mechanism and small pressure drop

Active Publication Date: 2022-02-01
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology

[0004] The purpose of the present invention is: in order to overcome the existing unconventional wells such as long horizontal, high-inclination and multi-branch horizontal wells with high drilling friction, resulting in back pressure, sticking, low rock-carrying ability of drilling fluid and unsatisfactory vibration effect The problem is to design a turbo-type drilling speed-increasing tool with a new type of valve structure driven by a cylindrical cam

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  • A turbo-type drilling speed-increasing tool with a new type of valve structure driven by a cylindrical cam
  • A turbo-type drilling speed-increasing tool with a new type of valve structure driven by a cylindrical cam
  • A turbo-type drilling speed-increasing tool with a new type of valve structure driven by a cylindrical cam

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[0012] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings.

[0013] The specific implementations of the present invention described here are only for the purpose of explaining the present invention, and should not be construed as limiting the present invention in any way. Under the teaching of the present invention, a skilled person can conceive any possible changes based on the present invention, and these should be considered as belonging to the scope of the present invention. It should be noted that when an element is referred to as being “disposed on” another element, it may be directly on the other element or there may also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening...

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Abstract

The invention relates to a turbine-type drilling speed-increasing tool with a novel valve structure driven by a cylindrical cam. Its structure mainly includes upper joint, fluid inlet cone, spring, new valve, sleeve, cylindrical cam, shell, mandrel, turbine, lower joint; upper joint, shell, and lower joint are connected by threads in turn; fluid inlet cone, new valve The mouth sleeve and the new valve sleeve are connected by threads in turn; a spring is installed between the new valve and the new valve sleeve, and a new valve pressure chamber is formed under the new valve to allow the first-in-time fluid to enter and activate the new valve; the turbine drives the cylinder on the mandrel. The cam rotates to make the sleeve matched with the cylindrical cam move up and down, push the new valve to move up and down, close or open the new valve hole, thereby causing the change of the flow area and forming a periodic pulse oscillation in the drill string; the invention can effectively It solves the problems of underpressure and sticking caused by unconventional wells such as long horizontal, highly inclined and multi-branch horizontal wells due to high drilling friction.

Description

technical field [0001] The invention relates to a turbine-type drilling speed-increasing tool with a new valve structure driven by a cylindrical cam, belonging to the technical field of drilling tools for oil and natural gas exploitation. Background technique [0002] Due to the shortage of oil resources and the large demand, the oil extraction technology has also been developed to adapt to the oil wells with complex well structure and the large number of long horizontal, highly deviated and multi-branch horizontal wells. Many new drilling tools have also been developed and used, making complex and unconventional drilling possible. In long horizontal, highly deviated and multi-branch horizontal wells, the wellbore trajectory is complicated, and the friction between the drill string and the well wall is greater than that of conventional vertical wells, resulting in back pressure and pipe sticking, which reduces drilling efficiency and prolongs development. cycle. During the...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B4/02F03B13/02F16K1/00F16K31/524
CPCE21B4/02F03B13/02F16K1/00F16K31/52408
Inventor 石昌帅王澳祝效华程飞龙
Owner SOUTHWEST PETROLEUM UNIV
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