Eliciting Oil Machine Well Pole Computer Imitating Reality And Test Study For Polymer Flooding

A problem has been put forward that the rate and degree of eccentric wear between sucker rod and oil tube aggravated in polymer flooding wells than which in water flooding wells since polymer wells put into production in Daqing oil field. The main reason is that the viscosity of produced liquid increased in polymer flooding wells than water flooding wells, it makes for all the frictional resistances increased correspondingly, the result is the maximal load become larger during upstroke and the minimum load become smaller during downstroke than water flooding after polymer output from polymer flooding well, force status of the rod turn too bad , and the lengthways buckling load increased in downstroke , make the buckling numbers bought by lose stability of sucker rod also increase, eccentric wear between sucker rod and oil tube become serious ,the rate of sucker rod broken be increased, operating wells obvious add a lot ,so it must influence the production of polymer flooding well. While operating charge increase, and the production cost enhanced also.This paper aimed at the problem , adopting theory analysis and test study, using Delphi programming to calculate the pole distortion , and adopting corresponding measure. Concrete study content as follows: First analysis viscosity variety of output liquid and calculating formula for polymer flooding; then base the pole mechanics model for the upstroke and downstroke; put up eliciting oil pole resistance test study in the viscosity liquid , build test device to study vertical force and test eliciting oil pump resistance , then regress the calculate formula for eliciting oil pump resistance . Secondly base on the basic method for pole statics analysis , choose finity unit to solve this problem , and gain the corresponding programme; then build the test device of eliciting oil pole distortion to validate the programme. Last calculate the real pole and base on the result adopt corresponding measure.The pole wear is lightened effectively, the cycle of examing the pump is prolonged and the better economy benefit is gained.