Offshore Drilling--The Solids Control System's Flow Process(I)

Today we continue the solids control system detail description.
The solids control system's flow process

Drilling fluid solids control system's complete preparation and transportation is through different pipelines.

1). Elevated pipeline: The elevated pipeline take the drilling fluid from wellhead and transported to circulation tanks for the first grade cleaning equipment. Usually, the parameter of return pipe is no less than 12", and the return pipe used more than 5000 meters' drilling rig is no less than 14".  Becasue in the first opening process, the drilling fluid contain bigger mud cake, in order to no block the pipe line, the return pipe need slope at least 3 degree. If we choose round pipe as return pipe, it need contain a winder for cleaning the sediment solids. There is also a flow meter on the return pipe to measure the total volume of drilling fluid and the flow speed.

2). Drilling pump suction pipeline: connect with the moving tank, and the drilling mud suction line enters into the drilling pump. Usually, the drilling pump's suction pipe line contains drilling pumps self suction line and the feeding pump's feeding pipe line. But it is also can be chosen one type. In the suction pipe line, it needs design drilling mud filtration screen to remove the bigger solids and other impurities in the drilling mud. The suction pipe line's suction month in the each cabin keep 200 to 300 meters height.

3). Pressure relief line of drilling pump:This pipeline is drilling pump safe valves discharge pipe. The discharge pipe line is connected with the nearest drilling mud cabin, so minimize the pipe bend, its easy discharge the fluid.

4). The mixed pump's suction and discharge pipeline: The drilling fluid in the mud tank is sucked into the mixed pump, and then into the mixed hopper, in the mixed hopper, it is added chemical and then transported into different solids control tanks. In the offshore drilling, usually design two different feeding fluid pipe lines. One pipe line used in drilling rig's grey system, through buffer tank to adding chemicals. The other used in drilling process to feeding fluid of bulk pack.

5). Seawater pipe line: Access from the seawater piping of the platform to each cabin involved in the preparation of the slurry. In the drilling process, it is used in the allocation of drilling mud.

Others will be continue tomorrow.

Contact: alisa@jxsolidscontrol.com
Website: www.jxsolidscontrol.com