Gas invasion monitoring tool and monitoring method for marine riser
A technology of riser and gas invasion, which is applied in the field of oil and gas drilling, can solve the problems of high cost of use and reduce cost of use, and achieve the effect of solving high cost of use, reducing cost of use and ensuring the quality of signal transmission
Active Publication Date: 2019-03-12
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology
[0006] The embodiments of the present application provide a riser air intrusion monitoring tool and monitoring method, which solves the technical problem of high cost in the prior art when transmitting air intrusion monitoring signals through wires, and reduces the use cost
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[0020] In the following, the present invention will be specifically described through exemplary embodiments. It should be understood, however, that elements, structures and characteristics of one embodiment may be beneficially incorporated in other embodiments without further recitation.
[0021] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "inner", "outer", "upper", "lower", "front", "rear" etc. are based on the The positional relationship is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be understood as indicating or imply...
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The invention provides a gas invasion monitoring tool and monitoring method for a marine riser. The gas invasion monitoring tool comprises a shell, a wireless transmission module and a control module,wherein the wireless transmission module is fixedly arranged on the shell and comprises a first excitation module and a magnetostrictive transducer, the first excitation module is used for outputtinga first excitation voltage, the magnetostrictive transducer is in communication connection with the first excitation module to convert the first excitation voltage into vibration waves, the control module is fixedly arranged on the shell, the control module is used for obtaining the predicted section gas content, and judging weather the predicted section gas content exceeds a preset warning value, and the control module is in communication connection with the first excitation module so as to control the first excitation module to output the first excitation voltage when the predicted sectiongas content is larger than the preset warning value; the gas invasion monitoring method uses the gas invasion monitoring tool. Compared with the prior wired transmission mode, the device reduces the use cost.
Description
technical field [0001] The invention belongs to the technical field of oil and gas drilling, and in particular relates to a riser gas intrusion monitoring tool and a monitoring method. Background technique [0002] As oil and gas exploration and development advance to the deep sea, the early monitoring of gas intrusion has gradually become the key and research hotspot for the safe and efficient implementation of deepwater drilling. Due to factors such as water depth, shallow high-pressure gas, and difficulty in formation pressure prediction, once gas intrusion occurs during deepwater drilling, it is difficult to detect gas intrusion early by using conventional monitoring methods such as mud pool liquid level, which greatly increases the risk of well control. Riser ultrasonic gas intrusion monitoring is a promising early monitoring method for deepwater drilling. In recent years, scholars at home and abroad have conducted active research on riser ultrasonic monitoring air int...
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IPC IPC(8): E21B47/10E21B47/001E21B47/107
CPCE21B47/10E21B47/001E21B47/107
Inventor 许玉强管志川廖华林史玉才刘永旺
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)