Qingdao Millennum Energy Co., Ltd. developed nano plugging filtration control additive for oil-based mud, has been applied in the Sankai well of north Tarim Basin, Tarim Oilfield, Xinjiang as first time.Filled the void of domestic non-water-based nano plugging agent and successfully solved the problem of the lack of environmental materials in domestic oil-based plugging filtration additions.
The product is environmentally friendly , and its main functions are plug the micro pores of mud shale, reduce the pressure transmission , and mitigate the collapse. It has the dual effect of filtration reduction and plugging with good compatibility. Thus provide more high-quality solution to cope with the sealing and filtration reduction problems in complex well conditions.
Sankai well has amount of gypsum mudstone. It easily get hydrated and expand lead the wellbore to instability, which created a serious challenge.That needs the drilling fluid has strong anti-salt ability,both physical and chemical anti-collapse to to the maintenance of wellbore stability.
The drilling team chose to use oil-based drilling fluid which provide high temperature filtration control,strengthen wellbore , improved fluids lubricity,drilling fast and less damage to oil and gas formation for well.Add our company's developed oil-based nano plugging agent to the circulation system before entering the collapsible formation, ensure smooth operation. In the practical operation, the nano-plugging agent showed the excellent performance in reducing water loss and stabilizing the wellbore, the operation quality fully meets the requirements of the operator.
