China oil network news as of July 25th, Jidong Oilfield Nanpu 1-3 artificial island has been implemented well drilling 44 cluster groups, 200 wells, in the realization of land on the basis of intensive, enhance the comprehensive management level, in the restricted area to achieve maximum benefit.
There are 4 artificial islands in Jidong oilfield. According to the "optimization of type combination, to improve the development effect, adhere to cluster directional wells mature blocks big development, the whole idea of the promotion of factory mode of operation", the establishment of Jidong Oilfield Development industrialized Dajing plexus demonstration zone, and strive to seek a breakthrough in the efficient development of limited areas. At the same time, based on the artificial island drilling practice in the Dajing plexus, well drilling technology, layout, fast anti-collision technology, the overall production process etc..
Large well cluster drilling can save ground space. Jidong Oilfield promote the "cluster wells and old wells field by building large well group intensive land use patterns, the overall optimization of site combination. Nanpu 1-3 artificial island drilling so far, by optimizing the site combination has been saved, covering more than 600 acres.
"A well group with 6 wells is equivalent to saving an area of nearly 5 wells." The exploration and development of construction engineering division deputy chief engineer of Nanpu productivity construction project manager department manager Zhao Yongguang introduced, "well drilling in the artificial island plexus, realization of offshore oil production on land, not only save the land, but also more secure."
Although the advantages of large well cluster drilling are outstanding, however, the unfavorable factors of drilling well, wellbore collision and cross operation challenge the drilling technology. The exploration and Development Engineering Department has optimized the layout of the wellhead several times, fully utilized the limited space, and provided favorable conditions for the well layout. At the same time, in the drilling process, the technicians strengthen the well trajectory control, make good anti collision barrier, adjust the target, optimize the trajectory, and drill into the reservoir. In the Nanpu 1-3 artificial island, single wells anti-collision wells up to more than 20, recently anticollision distance less than 3 meters, Jidong Oilfield through precise well trajectory control, there is no wellbore collision accidents, ensure the smooth construction of fast drilling.
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