Research on lifting technique for shallow directional well and shallow horizontal well in Jilin Oilfield

Shallow directional well and shallow horizontal well is a technical measure taken for solving the problem on failing in normal well drilling restricted by ground conditions in Jilin Oilfield in recent two years.Restriction of hole conditions brings maximal challenge to normal lifting work.At present,various applications of lifting techniques are still concentrated in vertical well and slant well.For directional well and horizontal well,especially shallow directional well and shallow horizontal well,whether design theory or field application is still in fumble stage.Therefore,aiming at actual demand of effective lifting for shallow directional well and shallow horizontal well faced in some regions in Jilin Oilfield,basic technical countermeasures of improving stress between rods and pipes and reducing partial grinding degree are put forward and wear-proofing measurements of optimizing centralizer design and applying glass lined tubing in chief are taken from analysis on mechanism of partial grinding formation and influencing factors of wear degree by discuss on core wear-proofing design idea for shallow directional well and shallow horizontal well lifting.Field application shows that,the lifting of shallow directional well and shallow horizontal well is feasible.