With Drill Machine, Hydraulic Control Theory Study And Jar Structure Optimization Design

Jar is a commonly used oil drilling tools, with drilling stuck ajar, and a series of drilling Wells, ensure its together under the performance index and safety for drilling industry is very important. This paper first to jar sticking-releasing principle is analyzed, and a new kind of design with drilling jar. Finally the producation make the ground test.This chapter describes the first in the elastic wave propagation theory, the one-dimensional rod according to the elastic wave theory, the simplified jar, and all kinds of work is built up the jar of sticking-releasing model. Model will be stuck to delay stage, the process is divided into collision with the release of energy phase three parts of phase. Finally, according to the mechanical model according to the principle of energy conservation of shock force of derivation, shock force calculation formula.Secondly introduced a new strike down on hydraulic, mechanical one-piece struck with drilling jar, the structure of the jar with drill on strike hydraulic institutions and struck down the mechanical parts of the structure and the working principle of the detailed introduction, established its design calculation model, based on the design of hydraulic machineΦ159 specifications with drill jar one-piece, according to the specification of the formula plans to release jar of calculation, and analyses the intensity calculation.Finally, ajar with ground test pressure test, and theΦ159 with drilling shock the bench test of test data, the paper makes a detailed analysis. According to the experimental data ofΦ159 drill jar with the design formula of optimized。...