oil or gas well which comprises installing a backpressure ball device into the wellbore to increase the back pressure for better control when introducing cement or other liquid plugging medium to plug the wellbore the device has a spherical shape with through bores and or external channels in a geometric pattern the external diameter of the sphere provides a shoulder of given diameter which when the device is installed in a wellbore comes to rest against a smaller diameter shoulder within the wellbore the device may free fall for all or part of the way down the wellbore but is typically pumped down at least for the last part of its delivery to confirm by an increase in pump pressure that it has landed cement and other liquid may then be pumped through the backpressure ball device to the distal region of the well the backpressure ball device may also be applicable for use in the operation of an oilfield by providing backpressure to actuate drive rods application_number US 201514634858 A description turning now to the detailed description of the preferred arrangement or arrangements of the present invention it should be understood that the inventive features and concepts may be manifested in other arrangements and that the scope of the invention is not limited to the embodiments described or illustrated the scope of the invention is intended only to be limited by the scope of the claims that follow fig1 shows one embodiment of a backpressure ball device 1 of the present invention u2014 comprising a spherical body comprised of metal or.