Well Control Technology Research For Shale Gas In Sichuan Zitong

Shale gas is a kind of clean and effective energy resources.Shale gas reservoir is the density of unconventional gas reservoir.The forergn got good grades on shale gas drilling.Shale gas resoures are rich in our country,the development of shale gas resource has a broad prospect.Now has been underway for shale gas exploration in sichuan region,in the process of mining,due to high pressure gas reservoir,well control technology belongs to the core technology,is particularly important.In order to do a good job,the most important is balance the bottom hole pressure through various methods.This article,the essay discusses the various factors of affecting the bottom of a well balanced,including bottom hole pressure,flow rate of circulating pressure loss,gas,etc.Find out important parameter in the all kinds of working conditions,we should control these factors to make a well control,ensure the downhole pressure balance,maintain the normal production of mine.Discussed in the process of gas cut,all kinds of pressure parameter changes,especially the change of the bottom hole pressure.Well killing method,analysis of the different applicability of various kinds of conventional and unconventional well killing method.Compareing these well killing methods to determine suitable for Zitong block.Restore the bottom hole pressure balance.The overflow and loss exist at the same time,This article will also discuss confirm funnelled location method.And plugging,work for blowout work early.Based on the actual case in zitong blocks,discussedthe downhole complexity of the region,choosed to use suitable for well control equipment.And when there is flowout and losee at the same time,the actual measures taken by the complex situation will eventually lift,well returned to normal production.Summed up the suit to well control scheme of the module,provided a reference for subsequent construction work for the blocks.