Slurry negative pulse generating device
A generating device and negative pulse technology, which is applied in construction and other fields, can solve the problems of difficult decoding, low pulse amplitude, and high power consumption affecting the service time of downhole instruments, and achieve good erosion resistance and low power consumption of pulse action.
Pending Publication Date: 2021-11-26
BEIJING LIUHE GREATNESS TECH
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The pulse generated by the existing mud pulse generator is a positive pulse, which needs to overcome the relatively large mud pressure. When generating the mud pulse, it is necessary to control the motor or solenoid valve to continue to operate, thus requiring a large current, and the large power consumption affects the downhole equipment. Use time, and the pulse amplitude is low, difficult to decode
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0018] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0019] Such as figure 1 As shown, a mud negative pulse generating device includes a suspension joint assembly 1, a first signal valve stem 2, an upper centralizing ring 3, a lower centralizing ring 4, a valve stem control piston 5, a main spring 6, a hydraulic valve assembly 7, an electromagnetic Valve assembly 8, balance piston 9, balance piston spring 10, communication assembly 11, and circuit control nipple 12, wherein the first signal valve stem 2, valve stem control piston 5, main spring 6, hydraulic valve assembly 7, solenoid valve assembly 8. The balance piston 9, the balance piston 10, the communication component 11 and the circuit control nipple 12 are connected in sequence, and the suspension head component 1 is coaxially arranged outside the first signal valve stem 2.
[0020] Such as figure 2 As shown, the hydraulic valve assem...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention belongs to the field of petroleum and coal downhole instruments, and relates to a slurry negative pulse generating device. The slurry negative pulse generating device comprises a suspension connector assembly, a first signal valve rod, an upper centralizing ring, a lower centralizing ring, a valve rod control piston, a main spring, a hydraulic valve assembly, an electromagnetic valve assembly, a balance piston, a balance piston spring, a communication assembly and a circuit control short section. The first signal valve rod, the valve rod control piston, the main spring, the hydraulic valve assembly, the electromagnetic valve assembly, the balance piston, the communication assembly and the circuit control short section are sequentially connected, and the suspension connector assembly is coaxially arranged on the outer side of the first signal valve rod. According to the slurry negative pulse generating device, slurry negative pulse signals can be generated, and the slurry negative pulse generating device is good in erosion resistance, low in pulse action power consumption and capable of being used underground for a long time.
Description
technical field [0001] The invention belongs to the field of petroleum and coal downhole instruments, in particular to a mud negative pulse generating device. Background technique [0002] Measurement while drilling is an important equipment used in drilling engineering, used to detect downhole information and transmit it to the surface. Among them, the sensor and the mud pulse generator are the core components of the MWD equipment. In practical application, the downhole parameters measured by the sensor are coded to generate an electric pulse signal, and the electric pulse signal controls the action of the mud pulse generator, thereby realizing the signal transmission. The pulse generated by the existing mud pulse generator is a positive pulse, which needs to overcome the relatively large mud pressure. When generating the mud pulse, it is necessary to control the motor or solenoid valve to continue to operate, thus requiring a large current, and the large power consumption...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/22
Inventor 冯建宇秦允海李轶武
Owner BEIJING LIUHE GREATNESS TECH