A Study On Drilling Technology Of The Gypsum Salt Layer In The Southern Of Ta He

During drilling work in salt layer areas in TeHe, some complex accidents such as the choke of drilling up and down, the drill pipe sticking and even casing destroy after cementing. The top of the bear wellbore will also be confound with the dangers aboat well leakiness because of balance salt layer wriggle. That will bring the serious security risk to the drilling operation. In order to solve the above problems, this article has conducted the research to the gypsum salt layer drilling technology in the southern of Tahe. Researching the gypsum salt layer drilling technology at home and abroad in order to understand the current status of it. According to the characteristics of the formation of the Tahe Oil field, Optimized structure of wellbore in the southern Tahe. When drilling formation of deep salt-gypsum layer, drilling fluid systems is preferred, calculated a reasonable density and Chloride ion concentration. Focusing on creep law of the salt-gypsum layer,and calculating casing reasonable time. Taking the special techniques during drilling gypsum salt layer.Such as pressure sealing and reaming teachnology and drilling fluid conversion technology. Providing theoretical guidance for drilling the Ta He salt layer.