Bidirectional linkage oil and gas well mouth hydraulic cutting device and cutting method
A hydraulic cutting, oil and gas well technology, applied in the direction of wellbore/well parts, earthwork drilling and production, etc., can solve the problems of not being able to accurately align the wellhead, not being able to cut through, and destroying the working surface, so as to facilitate the observation of whether the cutting is normal and convenient Observing the cutting progress and improving the service life of the equipment
Pending Publication Date: 2022-06-24
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology
When this type of hydraulic sandblasting cutting device is used for wellhead cutting, high-speed jets need to pass through the fluid in the well to perform cutting, resulting in large water energy loss, low cutting efficiency, and even failure to cut through; It is impossible to accurately align the wellhead, and the distance between the nozzle and the cut wellhead is also difficult to control, which greatly affects the cutting efficiency; when the wellhead is cut, if the cutting is not completed at one time, but the incision is formed, the existing equipment will be destroyed. work surface, resulting in more difficult secondary cutting
Method used
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Embodiment Construction
[0039] Attached below Figure 1-4 Examples of the present invention are given:
[0040] A two-way linkage oil and gas wellhead hydraulic cutting device, comprising a front cutting tool head and a rear driving device, the cutting tool head and the rear driving device are both connected to the cutting tool feeding device 1, and are connected to each other through a transmission infusion pipe 5. linkage. The cutting tool feeding device 1 is used for feeding the cutting device into the vicinity of the wellhead of an uncontrolled well to perform wellhead cutting.
[0041] The cutting tool head includes a cutting tool body 2, a walking track 3, a slider 4, a transmission infusion tube 5, a cutting nozzle 6, a guide block 7, and a positioning block 8. One end of the cutting tool body 2 is fixedly connected to the cutting tool feeding device 1, and the other end One end of the two walking rails 3 is fixedly connected, the other end of the walking rail 3 is fixedly provided with a gu...
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The invention discloses a bidirectional linkage oil and gas well mouth hydraulic cutting device and a cutting method.The cutting device comprises a cutting tool feeding device, a front end cutting tool head and a rear driving device, and the cutting tool head and the driving device are both fixedly connected to the cutting tool feeding device; the cutting tool feeding device is used for feeding the cutting tool head to a to-be-cut position of a wellhead, and the driving device is used for driving the two bidirectional cutting nozzles of the cutting tool head to move. Two-way simultaneous cutting is adopted, high-speed jet flow can be prevented from penetrating through high-speed flowing formation fluid, and the wellhead cutting efficiency is greatly improved.
Description
technical field [0001] The invention relates to a two-way linkage oil and gas wellhead hydraulic cutting device and a cutting method, which are suitable for obstacle clearance cutting and wellhead hydraulic sandblasting cutting operations for out-of-control blowout of oil and gas wells. Background technique [0002] When an oil and gas well blows out of control and catches fire, it is usually the case that the derrick collapses and the wellhead device is damaged. The cutting methods used for obstacle clearance cutting and wellhead cutting include mechanical cutting, flame cutting and hydraulic cutting. For wellhead cutting, especially for long-distance wellhead cutting when the wellhead is damaged after the blowout is out of control, hydraulic sandblasting is the first choice. [0003] Water blasting cutting is a technology that uses cutting sand (abrasive particles) and a high-speed flowing liquid jet to mix with each other to form a liquid-solid two-phase medium jet to re...
Claims
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Login to View More IPC IPC(8): E21B29/00
CPCE21B29/00
Inventor 刘贵义谢意湘罗园庞平李红兵杨宁钱卫斌胡旭光李玉飞赖向东
Owner BC P INC CHINA NAT PETROLEUM CORP