A mud pulse transmission system and method
A mud pulse and transmission system technology, which is applied in construction and other fields, can solve the problem of transmission rate restricting underground data uploading, and achieve the effect of improving data transmission rate
Active Publication Date: 2021-01-29
CHINA NAT OFFSHORE OIL CORP +1
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Problems solved by technology
At present, the transmission rate of the domestic MWD system has gradually become the bottleneck restricting the upload of underground data
Method used
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[0050] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.
[0051]The steps shown in the flowcharts of the figures may be performed in a computer system, such as a set of computer-executable instructions. Also, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.
[0052] In order to achieve the purpose of the embodiment of the present invention, the embodiment of the present invention provides a mud pulse transmission system, such as figure 1 As shown, the system includes: derrick 1, hook 2, standpi...
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The embodiment of the invention discloses a mud pulse transmission system. According to the mud pulse transmission system, a mud pump injects mud into a swing type mud pulse generator through a stand pipe; a driving and controlling device modulates a control signal according to a signal modulation mode of an upper computer, and controls a motor to operate according to the modulated control signal, so that the swing type mud pulse generator is driven to swing; the swing type mud pulse generator swings at a preset frequency under the drive of the driving and controlling device, and the mud pulse generated by swinging is transmitted to a well; a plurality of pressure sensors are distributed between a mud pipeline of the mud pump and the stand pipe, collect the pressure data of the mud pipeline, and denoise the pressure data; and a pump stroke sensor is arranged at a travel switch of the mud pump so as to determine the period and time starting point of pump noise in the pressure data according to the operation cycle, and the time domain denoising is achieved. The embodiment of the invention further discloses a pulse transmission method.
Description
technical field [0001] The invention relates to drilling technology, in particular to a mud pulse transmission system and method. Background technique [0002] The mud pulse remote transmission system is an important part of the measurement while drilling (Measure While Drilling: MWD) and logging while drilling (Logging While Drilling: LWD) equipment, and it is an important means to transmit downhole information to the surface in real time. With the continuous development of formation evaluation technology, especially the extensive use of imaging instruments, the amount of downhole data is gradually increasing, and a pulse generator with a higher transmission rate is required. At present, the transmission rate of the domestic MWD system has gradually become the bottleneck restricting the uploading of underground data. Contents of the invention [0003] In order to solve the above technical problems, the embodiment of the present invention provides a mud pulse transmission...
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IPC IPC(8): E21B47/20
CPCE21B47/20
Inventor 王智明郭云菅志军张峥陆庆超张爽朱伟红姜天杰张松炜蒋荻南赵宏宇兰铁坤陈涛李辉张冠祺兰洪波贾建波尹博
Owner CHINA NAT OFFSHORE OIL CORP