Rotary guide tool annular oil exhaust device
A technology of rotary steering and exhaust device, used in fluid pressure actuation devices, directional drilling, servo motor assemblies, etc., can solve problems such as cavitation, actuator failure, and inability to effectively guide
Active Publication Date: 2014-11-05
BC P INC CHINA NAT PETROLEUM CORP +1
View PDF7 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
As a precision measurement and control instrument, the hydraulic transmission part has very high requirements on the hydraulic oil. If there are air bubbles in the hydraulic oil, the system pressure will be unstable, the actuator will fail, and it will not be able to guide effectively, and even cavitation and vibration will occur. and shocks, damage the guide system
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
[0015] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.
[0016] Such as figure 1 As shown, the rotary steerable tool annular oil exhaust device according to the embodiment of the present invention includes a first solenoid valve 1, a second solenoid valve 2, a tee 3, an adjustable pressure reducing valve 4, a pumping dual-purpose vacuum pump 5 and a control device 6, where:
[0017] The pumping port 51 of the whipping dual-purpose vacuum pump 5 is connected to the B port of the tee 3 through the first solenoid valve 1. When the first solenoid valve 1 is in the first valve position, the pumping port 51 It communicates with the B port of the tee 3, and when the first solenoid valve 1 is in the second valve position, the suction ...
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 discloses a rotary guide tool annular oil exhaust device, which comprises a first electromagnetic valve, a second electromagnetic valve, a three-way valve, an adjustable pressure reducing valve, an inflating and deflating dual-purpose vacuum pump and a controller, wherein an deflating opening of the inflating and deflating dual-purpose vacuum pump is connected to an opening B of the three-way valve through the first electromagnetic valve; an inflating opening of the inflating and deflating dual-purpose vacuum pump is connected to an opening C of the three-way valve through the second electromagnetic valve; an opening A of the three-way valve is connected to a located cavity of an oil bag in a rotary guide tool; the adjustable pressure reducing valve is arranged between the inflating opening and the opening C of the three-way valve; and the controller is connected with the inflating and deflating dual-purpose vacuum pump, the first electromagnetic valve and the second electromagnetic valve, and is used for controlling the on-off state of the inflating and deflating dual-purpose vacuum pump and the reversing of the electromagnetic valve and the second electromagnetic valve. The rotary guide tool annular oil exhaust device provided by the invention has the advantages that the discharging and the backflow of hydraulic oil in the oil bag in the rotary guide tool can be automatically switched, and the cyclic exhaust function is reached.
Description
technical field [0001] The invention relates to the field of oil drilling equipment, in particular to an annular oil exhaust device for a rotary steerable tool. Background technique [0002] The steering mechanism of the rotary steerable system downhole tool is composed of a control part, a hydraulic part and an actuator. The hydraulic part needs hydraulic oil as a transmission medium. As a precision measurement and control instrument, the hydraulic transmission part has very high requirements on the hydraulic oil. If there are air bubbles in the hydraulic oil, the system pressure will be unstable, the actuator will fail, and it will not be able to guide effectively, and even cavitation and vibration will occur. and shocks, damaging the guidance system. [0003] Therefore, in order to avoid the adverse effect of gas on the mechanical properties of the hydraulic system and improve the steering accuracy, it is necessary to exhaust the annular oil that has been filled in the d...
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 IPC IPC(8): E21B7/04F15B13/02F15B21/04
Inventor 韩晓文魏春明金平张猛李志广邱卫红
Owner BC P INC CHINA NAT PETROLEUM CORP