Operation method achieved through automatic grouting and drilling fluid circulating system

Abstract

The invention discloses an operation method realized by an automatic grouting and circulating drilling fluid system, including the grouting operation process in the casing operation and the circulating drilling fluid operation process in the casing operation. When the drilling fluid needs to be poured after the buckling is completed, the mud pump is turned on, and the high-pressure drilling fluid enters the automatic grouting device through the high-pressure hose to realize the drilling fluid injection into the casing to balance the annular pressure inside and outside the casing; When stuck, insert the automatic grouting device into the casing, and when the drilling fluid pipe is full, the drilling fluid goes up to expand the sealing cup, closing the casing and the automatic grouting device, and completing the drilling fluid circulation operation.

Description

technical field

[0001] The invention relates to the field of drilling and completion casing operations, in particular to an operation method realized by an automatic grouting and circulating drilling fluid system. Background technique

[0002] Casing is a very important link in drilling construction. During the process of running the casing, the back pressure valve of the floating hoop of the casing is in a closed state, and the casing is easily deformed after being subjected to the pressure of the annular liquid column, which will affect the next step of drilling. Therefore, during the casing running process, as much drilling fluid as possible should be poured into the casing to balance the internal and external pressure of the casing. At present, manual filling is mostly used in drilling sites, which is time-consuming and labor-intensive. Since the drilling fluid is poured in discontinuously, the casing running operation must be stopped when the drilling fluid is poured, ...

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