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Hydraulic high-frequency impact device for drilling stuck release

A hammer and hydraulic technology, applied in the direction of earthwork drilling, wellbore/well components, etc., can solve the problems of drill sticking and high difficulty in unblocking, so as to improve work efficiency, simplify wellhead operation procedures and save operation time Effect

Active Publication Date: 2021-04-06
弗润联科(北京)石油科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For large-diameter near-bit tools such as rotary steerable, the requirements on the borehole wall are very high. Once the borehole wall is unstable and the pipe is stuck, it is difficult to release the stuck pipe from adjusting mud performance to conventional jar methods. high

Method used

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  • Hydraulic high-frequency impact device for drilling stuck release
  • Hydraulic high-frequency impact device for drilling stuck release
  • Hydraulic high-frequency impact device for drilling stuck release

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Embodiment Construction

[0034] The hydraulic high-frequency impactor for drilling and unblocking is composed of four major assemblies: valve assembly, downstroke piston assembly, upstroke piston assembly, and force transmission assembly. in:

[0035] Such as Figure 1-6 As shown, the valve assembly is mainly composed of: an upper joint 1, a valve spring 2, a valve seat 3, a valve head 4, and a valve stem 5.

[0036] The downstroke piston assembly is mainly composed of: upper outer cylinder 6, downstroke piston 7, downstroke primary spring 8, downstroke secondary spring 11, lifting spring 9, support ring 10, limit ring 35, and downstroke piston valve Head 12 composition.

[0037] The upper stroke piston assembly is mainly composed of: middle outer cylinder 13, lower outer cylinder 23, intermediate joint 22, sealing seat 14, upper stroke piston 15, upper stroke first-stage spring 16, upper stroke second-stage spring 19, upper stroke third-stage spring 24 , upper stroke four-stage spring 27, upper ma...

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Abstract

The invention discloses a hydraulic high-frequency forcible hammer for drilling and unblocking, which comprises a valve assembly, a downstroke piston assembly, an upstroke piston assembly, and a force transmission assembly. The hydraulic high-frequency impactor for drilling and unblocking of the present invention provides the high-frequency downward impact of the down-pressing drilling tool and the high-frequency upward impact of the lifting drilling tool required for unblocking of the drill tool near the drill bit in drilling and coiled tubing drilling and milling, which is conducive to loosening The stuck pipe caused by the collapse of the open hole wall makes the rock blocks between the stuck drill tool and the well wall quickly broken and loosened, especially suitable for the release of large diameter near-bit tools such as rotary steering.

Description

technical field [0001] The invention relates to the technical field of drilling jam release tools, in particular to a hydraulic high-frequency impactor for drilling jam release. Background technique [0002] During drilling or coiled tubing drilling and grinding operations, pipe sticking is often caused by keyway, pressure difference, falling blocks, debris deposition and other reasons. This phenomenon is particularly prominent in shale gas drilling activities. Due to the sensitivity of mudstone in long horizontal sections, wellbore collapse is prone to occur, and drill sticking is very likely to occur in the rotary steering and bit parts of the drill tool assembly. Especially at this stage, environmental protection requirements are becoming more and more urgent, and drilling mud is gradually changing from oil-based mud to water-based mud, which intensifies the probability of the above-mentioned complex drilling accidents. [0003] In the event of drill sticking, the curren...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B31/113
CPCE21B31/113
Inventor 郑松鹤谢巍孙威李海峰李公可王祝王健
Owner 弗润联科(北京)石油科技有限公司
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