Self-developed device reduces the risk of sand washing operation

On July 11, as the last sand flushing pipe was pulled out of the wellhead, the sand flushing construction of Well Wen 10-56 in the Wenbei operation area of ​​Pucheng Oilfield was successfully completed

In the process of oil exploitation, the loose cemented sandstone in the stratum will enter the wellbore with the formation fluid and be deposited in the wellbore, and the sand will be buried in the injection-production layer, resulting in failure of oil and water wells, blocking of injection-production equipment and corrosion problems, and sand flushing construction is required

In general sand flushing construction, when a single oil pipe is connected or replaced, the pump must be stopped for about 10 minutes, during which the sand particles in the sand flushing fluid will sink, affecting the sand flushing efficiency

In order to bite the hard bone of continuous sand flushing, the Oil and Gas Production Engineering Service Center organized the Equipment Technology Room to hold a project-setting meeting, and innovatively developed a practical device of "positive circulation continuous sand flushing short joint"

The device has been authorized by the State Intellectual Property Office for utility model patents