The Single MagnumDisk'" is used to

The Single MagnumDisk'" is used to create an underbalance condition between the r ervolr and productlon BHA.The MagnumDisk'" sub 'IS run on the boUom of the tub'lng and/or below a productlon packer BHA.After the production packer 'IS setthe wellbo servo'lr 'IS isolatedfrom the upper wellbore. Prior to latching into the production packer with the upper production BHAa lighter fluid is circulated down the production BHA to create the underbalance. Although the most common removal method of the Single MagnumDisk'" is applying 1000psi (6.9M Pa) overbalance pressurea Magnum Go-Devil Drop Barcoiled tub'lngsrlckrlne or sand line can alsobe used to remove the MagnumDisk'" to ach'levethe underbalance surge. Once the d'lsk 'IS removedthe wellbore fluids can then be produced up the production tubing