An Artificial Island Of Well Repair Operation Technology

An artificial island is located offshore heavy oil oilfield belongs to, enter, in later development, will be mined by cyclic steam stimulation. The offshore oil exploitation mode, both at home and abroad for the first time, put forward higher request to the workover operation. A survey of offshore, onshore service models through the literature search and the main models, the current ocean workover rig workover operations to the sea, but the models are generally designed for jacket platform, workover and limited in scope, and a complete machine price is higher. As a result of an artificial island oil wells are more, the conventional offshore workover rig is suitable for the island of workover operation will be greatly reduced, and the operating costs will increase dramatically. In addition, snubbing technique repair oil mature onshore, can not fully meet the requirements of offshore oil field workover operation, put forward higher requirements for safety, environmental protection, well control and technology and other aspects of the workover operation.In this paper, the heavy oil from the land, ocean oil field workover equipment supporting and workover operation technology of the status quo, obtaining some experience from an artificial island, according to the environmental characteristics, the analysis and study of an artificial island workover technology, including the workover machine type selection, guide rail type workover equipment facilities, research automatic measurement of the rod and pipe workover process design etc.. Among them, guide rail type workover equipment facilities and research, including wellhead pipe rod mechanical transmission system, riser, elevated BOP suspension transport device, high altitude operation device, adjustable horn tube and other content.To carry out land mounted test, based on performance, compatibility test well repairing machine and its ancillary facilities and so on, and proposed the optimized scheme, through the joint commissioning test run, provided a guarantee for the subsequent island. In the island of workover operation, increased vertical tube, BOP suspension transport device, high altitude operation device, adjustable horn tube and other facilities to guarantee safe operation, to meet the requirements of the work environment and the construction technology of tube and rod; wellhead mechanical transmission system, tube and rod automatic measurement and optimization of system matching to improve the automation level of repair well operations, reducing the labor intensity of operating workers.Based on an artificial island with intensive wellhead slot arrangement and linear oil pumping machine, production facilities spatial distribution characteristics analysis, using HXJ135 E rail mounted workover mechanized equipment, facilities and optimization of well washing, sand washing and workover technology, solves the small space inside an artificial island drilling operation the problem, improve the operating quality, with the guidance of the offshore workover operation.