Research And Application Of Drilling Technology For Shallow Horizontal Wells In Jilin Oilfield

Jilin oilfield is a complicated by faults of high anticline,Fuyu oilfield is the first oilfield development in Jilin oilfield,that is a shallow reservoir and geological reserves of more than 100 million tons in Jilin oilfield.since this field is 1/3 of the area is located in the city,the conventional drilling technology,there almost 10 millions tons of proven oil reserves unable to develop.Although the use of shallow directional well drilling technology,a part of reservoir has been developed,but still can not solve the problem of reservoir displacement over 190 m and if the shallow horizontal drilling technology,the ground displacement limited shallow reservoir above 300 m have been developed,so as to Fuyu old yield production and oil production,have a positive impact,at the same time as the reasonable layout,old well network has good effect of recovery.As the shallow horizontal well is different from the conventional horizontal wells,because the depth of wells is shallow and the radio of the displacement and the well depth is relatively large,with large friction during drilling and casing,how to overcome the friction problem of drilling and casing,has become the key problem of shallow horizontal well drilling to solve,so we need to study the special drilling technology for horizontal well drilling in shallow strata.This paper first analyzes the geological characteristics of the block,to find out the technical difficulties of shallow horizontal wells in the process of development,and puts forward some technical measures,and in-depth analysis of the factors affecting the mechanical speed;and then separately from the drill bit,drilling and hydraulic parameters,drilling angle,and put forward the corresponding optimization measures,and ultimately achieve the improvement of mechanical speed.A scheme of shallow horizontal well forming,and field application of the scheme are analyzed.Through this research,for the drilling of shallow horizontal well in shallow depth,in the development process will encounter many difficulties,forming a shallow horizontal well speed scheme,The technology is safe and effective to solve the problem of insufficient drilling pressure in the horizontal section caused by the low slope,the drilling speed of shallow horizontal well is improved.