Operation method achieved through automatic grouting and drilling fluid circulating system

A technology of circulating drilling fluid and automatic grouting, which is applied to drilling equipment and methods, drilling equipment, earthwork drilling and production, etc., which can solve the problems that the casing cannot be guaranteed to go down to the bottom of the well smoothly, and there are potential safety hazards, so as to reduce the labor of workers Strength, reduced construction difficulty, and high safety effects

Inactive Publication Date: 2016-10-12
CNPC BOHAI DRILLING ENG
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Problems solved by technology

None of the above methods can ensure that the casing goes down to the bottom of the well smoo

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  • Operation method achieved through automatic grouting and drilling fluid circulating system

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Embodiment Construction

[0022] Below in conjunction with accompanying drawing and specific embodiment the present invention will be described in further detail:

[0023] see figure 1 , an operation method realized by the automatic grouting and circulating drilling fluid system of the present invention, the automatic grouting and circulating drilling fluid system used in the operation method includes mud pumps, high-pressure standpipes, drilling rig swimmers arranged sequentially from top to bottom Car, high-pressure water cage belt, lifting ring, automatic grouting device, casing, upper chuck and lower chuck;

[0024] The operation method includes the grouting operation process in the casing operation and the circulating drilling fluid operation process in the casing operation;

[0025] The grouting process in the casing operation includes the following steps:

[0026] 1) When grouting is required, turn on the mud pump;

[0027] 2) The high-pressure drilling fluid enters the high-pressure water ca...

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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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Application Information

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IPC IPC(8): E21B21/00E21B7/20
CPCE21B21/00E21B7/20
Inventor 雷齐松马金山齐金涛田刚贺彦亮徐海潮佘丹兵文雄兵栾家翠王建华
Owner CNPC BOHAI DRILLING ENG
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