An experimental device for simulating load-temperature coupled wear of pdc teeth

Abstract

The invention relates to an experimental device for simulating PDC tooth load temperature coupling wear, which consists of a motor, a hydraulic power source, a lower support frame, a left hydraulic cylinder, a left guide loading block, a micro power end, a left guide column, an upper support frame, Composed of PDC tooth traverse mechanism, right guide column, right guide loading block, temperature measurement and control mechanism, right hydraulic cylinder, rock rotation mechanism, chip removal device, and reduction box; the invention overcomes the single reciprocating or circular motion of traditional friction and wear experimental devices Due to the limitations of the PDC tooth traversing mechanism, the rock rotation mechanism and the hydraulic pressure, the compound movement of the PDC tooth in the circumferential, transverse and longitudinal directions is realized, and the longitudinal load is also applied; through the monitoring of the temperature of the PDC cutter tooth body and control, realizes the direct adjustment of PDC tooth body temperature, which is more accurate and reliable than traditional ambient temperature control; the invention can realize the experimental research of PDC tooth wear performance under different tooth body temperature and load coupling.

Description

technical field [0001] The invention relates to an experimental device for simulating PDC tooth load temperature coupled wear, belonging to the field of mechanical wear experimental devices. Background technique [0002] PDC bit is an important rock-breaking tool in oil and gas, geothermal, coal and other drilling fields. Based on the advantages of low drilling pressure and high drilling speed, its share in the oil and gas drilling market is gradually expanding. At present, the share of PDC bit in the world oil and gas drilling market has reached 80%, accounting for more than 90% of the world's total drilling footage, and has become the main drill bit in the field of oil drilling, which has played a huge role in promoting drilling speed and drilling technology development. . [0003] However, when drilling high-temperature complex hard formations, the PDC teeth are severely worn due to the coupling effect of temperature and load, which reduces the life of the drill bit and ...

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Problems solved by technology

[0003] However, when drilling high-temperature complex hard formations, the PDC teeth are seriously worn due to the coupling effect of temperature and load, which reduces the life of the drill bit and drilling efficiency, and restricts the development of the PDC bit.

At present, domestic and foreign scholars lack the research on PDC tooth wear under the coupling of temperature and load, and the supporting experimental equipment has not been reported.

[0004] In addition, the traditional friction and wear test device has three shortcomings: first, it can only control the ambient temperature, not the temperature of the PDC tooth body; As much as several times, the traditional friction and wear test device is difficult to deal with a large amount of cuttings generated during the grinding process; third, the traditional friction and wear test device only uses a single reciprocating or circular motion, and based on the characteristics of a large amount of rock wear, Requires cutters for compound motion

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