Saudi Arabian Oil Company

Mohammad Abdullah Alkhateeb

Bandar S Malki

Juan Manuel Polo Terán

Abdullrohman Khaled Alarfaj

Ali Al-Shaikh

A drift bar is lowered into a well. The drift bar has a density that is less than a density of a wellbore fluid residing in the well. A tubular is lowered into the well below a surface level of the wellbore fluid residing in the well. The tubular defines an inner bore having an inner diameter that is greater than an outer diameter of the drift bar. The drift bar is positioned to pass through the inner bore of the tubular as the tubular is lowered into the well. After the tubular is positioned below the surface level, an absence or presence of the drift bar floating at the surface level is detected. An absence or presence of a restriction in the inner bore of the tubular is determined in response to detecting the presence or absence, respectively, of the drift bar floating at the surface level.

Pipe drifting in wells

An apparatus includes a scale removal head, a scale collector, a circulating plate assembly, and a guide. The scale removal head includes a plurality of blades that scrape against a wall of a wellbore to remove scale from the wall of the wellbore in response to rotation of the apparatus. The scale collector defines a first inner region within a surrounding slotted chamber. The circulating plate assembly defines a second inner region within a pipe. The first inner region and the second inner region together define a collection volume for accumulating and storing scale that has been removed from the wall of the wellbore. The guide includes a plurality of blades that scrape against the wall of the wellbore to remove scale from the wall of the wellbore as the apparatus rotates.

Growing community of inventors

Dammam, Saudi Arabia

Mohammad Abdullah Alkhateeb