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A ground control and safety valve technology, which is used in wellbore/well valve devices, wellbore/well components, earth-moving drilling, etc., can solve the problem of high labor intensity, large data deviation, and abnormal situations that cannot be dealt with in time and other problems, to achieve the effect of low labor intensity and small data deviation
Active Publication Date: 2017-09-15
BAOJI CHANGYOU PETROLEUM EQUIP CO LTD
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The original logging tool body is lifted to the surface to analyze the underground storage volume, which is labor-intensive, has large data deviations, high production costs and is not easy to operate
When an abnormal situation occurs downhole, the original logging tools cannot play more roles, so that the abnormal situation cannot be dealt with in time, which increases the work intensity
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[0019] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0020] A ground control test safety valve with a structure such as figure 1 , figure 2 As shown, a cylindrical annular structure is adopted, including upper joint 1, duck neck outer cylinder 2, spring outer cylinder 3, piston mandrel 4, spring 6, check valve 40, ball valve outer cylinder 9, ball valve assembly 10, lower limit The ball seat 12 and the lower joint 14, the upper joint 1, the duck neck outer cylinder 2, the spring outer cylinder 3, the ball valve outer cylinder 9 and the lower joint 14 are sequentially fixedly connected to form a hollow shell, and the piston mandrel 4, The spring 6, the one-way valve 40, the ball valve assembly 10 and the lower limit ball seat 12 are sequentially arranged on the shell formed by the upper joint 1, the duck neck outer cylinder 2, the spring outer cylinder 3, the ball valve outer cylinder 9 and th...
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Abstract
The invention discloses a ground control test safety valve, which comprises an upper joint, a duck neck outer cylinder, a spring outer cylinder, a piston mandrel, a spring, a one-way valve, a ball valve outer cylinder, a ball valve assembly, a lower limit ball seat and a lower joint , the upper joint, duck neck outer cylinder, spring outer cylinder, ball valve outer cylinder and lower joint are sequentially fixedly connected to form a hollow shell, and the piston mandrel, spring, one-way valve, ball valve assembly and lower limit ball seat are arranged in sequence In the shell formed by the upper joint, the duck neck outer cylinder, the spring outer cylinder, the ball valve outer cylinder and the lower joint, the inner wall of the duck neck outer cylinder is provided with a control pipeline, a balance pipeline and a chemical injection channel, and the control pipeline maintains pressure to make the The ball valve assembly is always in the open state, and the pressure formed by filling the balance pipeline with nitrogen gas cooperates with the spring and the one-way valve to drive the ball valve assembly to close to cut the coiled tubing, and inject chemical agents to the bottom of the well through the chemical injection channel. The invention can cut test cables and coiled tubing by means of nitrogen filling pressure or balanced pipeline pressure.
Description
technical field [0001] The invention belongs to the technical field of oil and gas field development equipment, and in particular relates to a safety valve for ground control testing. Background technique [0002] my country is a country with less oil and more gas. From Daqing to Liaohe, from Yanchang to Shengli Oilfield, from Yumen to Karamay, from the East China Sea to the South China Sea, oil wells need accurate logging positions and reserves to increase production. Oil and gas production. The original logging tool body is lifted to the surface to analyze the underground storage, which is labor-intensive, has large data deviations, high production costs and is not easy to operate. When an abnormal situation occurs downhole, the original logging tools cannot play more roles, so that the abnormal situation cannot be dealt with in time, and the work intensity is increased. Contents of the invention [0003] The present invention aims at the deficiencies of the above-menti...
Claims
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