油井合理提捞周期优化方法

提捞采油井在捞油后需关井恢复液面，当井筒储集一定油量后，再进行下次捞油，若油井捞油后关井时间过长，累积捞油量将大幅度降低，相反，关井时间过短，尽管捞油总量增多，但随着捞油次数的增加捞油成本将大幅度上升，如果仅凭经验捞油，势必导致对油井捞油盲目性，即影响油井产量，又影响提捞效益，该文以油藏工程理论为指导，从油井关井液面恢复资料入手，提出油井关井动液面预测方法，建立了油井捞油净收入优化数学模型，通过对模型求解，便可得到油井下一生产阶段的合理提捞周期。

A Optimum Method for Oil Wells’Bailing Period

For the bailing exploitation,it's necessary to shut in well for resuming the liquid level,while the wellbore gets the quantificational oil,then it's beginning to bailing for the next time.If the oil well downtime is more longer after bailing,the cumulative production of bailing will reduce to a great extent.On the other hand,if the oil well downtime is so shorter,although the cumulative production of bailing increase,the bailing cost will increase to a great extent along with the increasing times of bailing.If depending on the experience of bailing only,the bailing exploitation is blindfold in result,that will affect oil well production and benefit of bailing.So,oil wells'bailing period rationally is a most important parameter for bailing exploitation .This article depends on reservoir engineering theory,and begins with the information of resuming the liquid level of shut in oil well,then shows the forecast method of dynamic fluid level of shut in oil well,establish a optimum mathematics model of net income of bailing exploitation.From the evaluation of the model,the oil wells'bailing period rationally for the next producing phase will be received.