At present, the majority of oil production plants use tubular pumps for exploitation, the depth of the pump under the pump is affected, the general depth of the underground pump is shallow, at 1400 ~ 1800m or so. For deep wells, the tube pump "out of the reach." In July 2005, the oil extraction plant introduced the rod pump efficient lifting supporting technology, using small diameter series oil pump continuous lifting, small pump deep pumping, pump depth up to 2200 ~ 2300m. The test was carried out in No.4 Mine LJL52-10 well and put into production on August 7, with good results. Re-testing is currently underway in LJL 52-12.
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