RESEARCH ON WELL DEPTH OF OIL PRODUCING SLIM HOLE

In order to reduce the investment on peripheral stripper wells, the technique of producing oil with slim hole is adopted. Since 1996, several batches of slim holes have been put into production in Daqing Oil Field, and a certain amount of experiences and cognition have been obtained. This paper introduces the production and technological matching of slim holes in the peripheral field of Daqing Field, analyzes the forces exerted on different tube strings under different conditions in terms of water injection, artificial lift, fracturing, overhaul and so on. This paper also determines the setting depth of different tube strings in the slim hole, economically selects various tube strings, analyzes the suitability of diverse technology and discusses the technical and economical feasibility of slim hole for producing the peripheral stripper wells.