A Drill String Coupling Nipple Exciting Multi-Dimensional Impact

Abstract

The invention belongs to the technical field of oil and gas drilling equipment, and relates to a drill string connecting short joint for stimulating multi-dimensional impact. An upper impact rod is connected to an external upper drill string; It is arranged between the upper impact rod and the lower impact rod; the lower end of the upper impact rod is sequentially provided with a lower impact rod, a limit plate and a lower joint from top to bottom, the lower impact rod is sleeved on the upper impact rod, and the upper impact rod passes through. It enters the lower impact rod and is connected with the limit plate placed inside the lower impact rod. The upper end of the lower impact rod is provided with a lower impact rod trapezoidal key that engages with the upper impact rod trapezoidal key. Hexagonal groove, the lower end of the lower joint is provided with the lower end thread of the lower joint; its structure is simple, easy to use, safe and reliable, basically no additional pressure loss, does not affect the structure of the drilling tool, is suitable for a variety of drilling platforms, and has low manufacturing and maintenance costs. .

Description

Technical field: [0001] The invention belongs to the technical field of oil and natural gas drilling equipment, and relates to a drill string connecting nipple that stimulates multi-dimensional impact, in particular to a drilling tool for increasing the ROP in deep wells and hard formations. Background technique: [0002] In the process of oil and gas exploration and development, as the well depth increases, the formation becomes harder, the heterogeneity becomes stronger, and the drillability becomes poorer, which leads to a decrease in the mechanical penetration rate, prolongs the drilling cycle, and increases capital investment. In order to solve the problem of low ROP in the drilling process, oil drilling workers proposed and developed vertical drilling technology, hydraulic pressurizer, hydraulic oscillator, downhole dynamic drilling tools, high-efficiency PDC drill bits and new composite drill bits, shunt negative pressure Drill bits, hydraulic pulsation drilling tools...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of low ROP in deep well drilling, overcome the deficiencies in the prior art, and provide a drill string connection nipple that stimulates multi-dimensional impact. The nipple utilizes the periodic longitudinal and torsional vibration of the drill string , so that the drill bit can simultaneously produce axial and torsional impacts on the rock at the bottom of the well, improve the rock breaking efficiency, the life of the drill bit, and eliminate the mud bag of the drill bit, thereby increasing the mechanical penetration rate and reducing the drilling capital investment

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