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Multi-stage cement injector

Multi-stage cement injector

(Summary description)Multi-stage cement injector is an important operation in the drilling process. In the drilling operation, there are generally at least two cementing (production wells) and as many as 4 to 5 cementings (deep exploration wells).

Multi-stage cement injector

(Summary description)Multi-stage cement injector is an important operation in the drilling process. In the drilling operation, there are generally at least two cementing (production wells) and as many as 4 to 5 cementings (deep exploration wells).

Information

Multi-stage cement injector is an important operation in the drilling process. In the drilling operation, there are generally at least two cementing (production wells) and as many as 4 to 5 cementings (deep exploration wells). The top cementing is the surface casing cementing, which plays the role of "mud passage, oil and gas gateway". Before the next drilling, a blowout preventer should be installed on the surface casing to prevent blowout. A mud conduit should be installed above the blowout preventer, which is the passage for the drilling fluid to return to the mud pool.

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During the drilling process, technical casing cementing is often required, which plays the role of "consolidating the rear and exploring the path safely". Like tunnels on highways and roadways in coal mines, well collapse, high pressure and unstable strata will also be encountered during the drilling process. At the same time, it is also for the purpose of "rescue" in case of danger in the forward "exploration". effect. The oil layer casing plays the role of "tight seal, oil and gas gateway". Before the oil layer is drilled, the oil, gas and water are in a state of equilibrium and isolation in the formation. Therefore, in order to test oil and exploit oil and gas, it is necessary to lower the oil layer casing and inject cement to seal the oil and gas water layer tightly.

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