Supporting rod pulling and breaking type automatic grouting valve
A technology of automatic grouting and support rod, which is applied to the valve device of wellbore/well, wellbore/well components, earth-moving drilling and production, etc., can solve the problems of delaying casing running time, increasing labor intensity, etc., to avoid the card sleeve The effect of preventing accidents, reducing labor intensity, and being easy to process
Inactive Publication Date: 2014-08-20
慕武
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Problems solved by technology
This not only delays a lot of casing running time, but also increases the labor intensity of workers. It may also cause pressure difference tube accidents caused by untimely casing movement when the casing operation is stopped and grout is poured into the casing, which delays oil and gas exploration. schedule
Method used
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Embodiment Construction
[0013] Such as figure 1 As shown, a support rod pulling and breaking type automatic grouting valve is mainly composed of casing nipple 1, lower valve seat body [guide seat] 2, guide ball with rod 3, upper valve seat body [guide seat] 4, pin 5, Support bar 6, support bar support 7, pin 8 form.
[0014] The support rod 6 passes through the support rod bracket 7 to support the lower guide rod of the guide ball 3 with the rod, so that the top of the guide ball 3 with the rod is separated from the conical surface of the upper valve seat body [guide seat] 4 by an appropriate distance to form a fluid channel , to achieve the purpose of automatic grouting. When positive circulation, well kick and blowout mud flow back in the pipe, the high-speed flowing fluid acts on the spherical surface of the guide ball 3 with the rod, and the support rod 6 is pulled and broken, and the spherical surface of the guide ball 3 with the rod and the upper valve seat body [guide] The tapered surface of...
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The invention discloses a supporting rod pulling and breaking type automatic grouting valve. The supporting rod pulling and breaking type automatic grouting valve is characterized in that a supporting rod penetrates through a supporting rod support to support a lower guiding rod of a rod carrying guiding ball, so that the upper face of the rod carrying guiding ball is away from the conical face of an upper valve seat body (a guiding seat) by a proper distance, a fluid channel is formed, and the purpose of automatic grouting is achieved. In the time of direct circulation, well kick and blowout happen and mud backflows in a pipe, fluid flowing at a high speed acts on the spherical face of the rod carrying guiding ball, after the supporting rod is pulled and broken, sealing is formed between the spherical face of the rod carrying guiding ball and the conical face of the upper valve seat body (the guiding seat), and the function of a check valve is achieved.
Description
technical field [0001] The invention relates to the method of manual grouting without stopping the casing operation in the casing casing operation of oil drilling, which can be automatically grouted. At the same time, it can also ensure that it can play the role of a check valve in the event of circulation, well kick and blowout in the pipe, avoiding blowout in the pipe and backflow of cement slurry to ensure the quality of cementing. Background technique [0002] In the process of casing running in oil drilling, because the commonly used floating hoops, floating shoes, and inner pipe cementing devices only play the role of check valves, and because of the limitation of pressure bearing capacity and casing anti-collapse strength, casing running When reaching a certain well depth, in order to prevent the floating hoop (floating shoe or inner pipe cementing device) from failure due to excessive pressure, it is easy to cause well kick or even blowout accident in the pipe, preve...
Claims
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IPC IPC(8): E21B34/08E21B33/13
Inventor 慕武鲍远敦张荣耀吴海马元博耿婷婷郭全玲王新龙赵生孝慕生福
Owner 慕武