Changqing Jing Nan Block Horizontal Technical Difficulties And Speed Program Analysis

Changqing Oilfield belonging to the new growth fields, the rapid increase in recent years in an efficient and development, but because of low permeability reservoirs in Changqing block reserves are substantial, but because of the poor condition of the reservoir, the development of technology is relatively backward and low level of development and utilization of technology, its development and utilization of reservoir effect is not ideal, but the horizontal drilling technology has a very important significance to improve the development effectiveness of oil and gas production.Changqing Jing Nan existence block horizontal drilling technology to tackle tough problems,big four open wellbore, large mud purification difficulties, both long openhole section to the next casing caused great difficulties; Yanchang, Liujiagou group bearing the ability to drain the pressure differential characteristics but also to bring greater difficulty drilling; thin and black mudstone reservoir more long horizontal section, drag severe pressure, but also to the horizontal section drilling also with great difficulty, Secondly, the purpose of Changqing Jing Nan block layer deeper strata complex, higher accident rates underground, causing long drilling cycle. This article will focus on more technical difficulties propose solutions targeted analysis solution to shorten drilling cycle, saving horizontal drilling costs radically, which blocks Changqing Jing Nan horizontal drilling technology has important significance.