Cone bitasarock-drillingtoolshave beenwidely usedindrillperformanceimprovementsdirectly reduce thecost of drilling, especially inthe past decademost improved.

Twoperformance indicatorsofthelife anddrilling speed, they will eventuallydeterminethe extentofthedrill bitdrilling costs. Increasedrilling speedand service lifeofthedrillisan effective waytoreduce drilling costs.

Thedata confirm thatthepenetration rateimprovementstoreducethecost of drillinga greater impactthantheimprovementofthebit life, includingtheimprovementofthebit cutting structureisthe most directwaytoimprovecone bitsROP.

A long time, theimprovementofthecutting structureismainly concentratedinthemain cuttingtoothstructure, thestructureofthecarbideteeth, forexample, peoplehaveinvented thewedge-shapedteeth, spoon-shapedteeth, partialtopspoon-shapedteeth, wear oftooth.

Over thepast decade, peoplegradually realized thattogagethe structure ofthedrilldrilling speedandlifehave a greater impact, especially inhighly deviatedand horizontal

wellsapplicationsdrillsrequiresareasonablegagestructure, many newgagestructureachieved goodresultsinthestudydevelopedand applied tothecone bit.