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Hydraulically operated high frequency severe impactor for drilling jam release

A hammer and hydraulic technology, applied in the direction of earthwork drilling, wellbore/well components, etc., can solve problems such as high difficulty in unblocking and stuck pipe, so as to simplify wellhead operation procedures, improve work efficiency, and reduce error actions The effect of the probability of

Active Publication Date: 2019-08-23
弗润联科(北京)石油科技有限公司
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  • Application Information

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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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  • Hydraulically operated high frequency severe impactor for drilling jam release
  • Hydraulically operated high frequency severe impactor for drilling jam release
  • Hydraulically operated high frequency severe impactor for drilling jam 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 hydraulically operated high frequency severe impactor for drilling jam release. The hydraulically operated high frequency severe impactor for drilling jam release comprises avalve assembly, a lower impact piston assembly, an upper impact piston assembly and a force transmission assembly. The hydraulically operated high frequency severe impactor for drilling jam release provides downward high frequency impact by pressing a drilling tool and upward high frequency impact by lifting up a drilling well needed by jam release of a near-bit drilling tool in drilling and continuous oil pipe drilling and polishing, and the condition of jam of the drilling tool as a result of an open hole well wall collapses is alleviated favorably, so that rocks between the drilling tool which is jammed and the well wall are crushed and loosened quickly. Therefore, the hydraulically operated high frequency severe impactor for drilling jam release is particularly suitable for releasingjam of a rotary steering large diameter near-bit tool and the like.

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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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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