The reason and prevention measures for the rod and tubing wear of the pumping unit in the Bei 301 operation area

Abstract

In order to study the effective prevention measures to improve the regulation effect of the anti-deflecting measure in Bei 301 operation area and prolong the pump cycle of the oil well. The calculation of the historical data of the eccentric wear well and the analysis of eccentric wear prevention effect show that eccentric wear condition in Bei 301 operation area of hailaer oilfield is relatively serious and the operating wells’ ratio of rod breakage and tube leakage increases year by year due to eccentric wear [1,2]. In 2014, the proportion of rod breakage and tube leakage in the operating wells of the operation area was 19.4% and 45.2% respectively, and the average pump inspection cycle was around 400 days. The reasons for the serious wear of the rod pipe in Bei 301 operation area are the improper production parameters, the submergence depth, high water content and well fluid properties according to the detailed data analysis of the pump operation. Active eccentric wear prevention measures have some effect, and next research direction for preventing eccentric wear is put forward in this paper: the paraffin-removing technology, bi-directional protected box coupling and low friction pump combined with the problems faced by the operating area.

Study on the Wear Performance of Polyethylene Inner Lining Pipe under Different Load and Mineralization Conditions

“…From the above analysis, it can be seen that there is inevitable wear and tear between the pumping rod and the oil pipe, especially in directional wells, highly deviated wells, and wells with complex wellbore trajectories. The issue of pipe and rod wear prevention in such wells has always been of great concern [9][10][11]. At the same time, researchers around the world have also achieved a series of important results on the issue of wear and tear [12][13][14][15][16][17].…”