Method and device for controlling direction of down-hole drilling of highly-deviated well
A technology for highly deviated wells and drilling devices, which is applied to drilling driving devices, drilling equipment and methods, drill pipes, etc. Equalize the problem to achieve the effect of reducing shaking, ensuring straightness and improving service life
Pending Publication Date: 2019-11-15
ORIENT ENERGY & TECH CO LTD
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The conventional down-the-hole drilling technology is not suitable for the drilling of highly deviated wells, mainly due to the uneven distribution of the formation.
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
[0026] In order to enable those skilled in the art to better understand the technical solution of the application, the application will be described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the application. .
[0027] First, please refer to figure 1 , this embodiment provides a method for controlling the direction of down-the-hole drilling in highly deviated wells. The down-the-hole hammer 100 is used to drill along a specified angle. When it is detected that the drilling direction deviates from the predetermined track, it is corrected through the curved shell 300, and the specific steps are as follows:
[0028] Step 1: The down-the-hole hammer 100 stops rotating, and the angled side of the curved housing 300 is adjusted to face the predetermined track direction;
[0029] Step 2: The down-the-hole hammer 100 impacts drilling...
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 provides a method and device for controlling the direction of down-hole drilling of a highly-deviated well. The method is to drill through a down-the-hole hammer at a specified angle, during the drilling process, a detecting device determines the rotation angle, the inclination angle and the drilling direction by receiving geomagnetic signals, and when the drilling direction is detected to deviate from a predetermined track, correcting is carried out through a curved shell; and the method specifically comprises the following steps that step 1, the down-the-hole hammer stops rotating, and the side of the included angle of the curved shell is adjusted to face the direction of the predetermined track; step 2, the down-the-hole hammer drills until to return to the predetermined track in an impact mode; and step 3, the down-the-hole hammer continues to drill in impact and rotary modes. According to the technical scheme provided by the embodiments, real-time monitoring of the inclination direction during the drilling process is realized by the detecting device, and after hole position shift occurs, adjustment can be carried out through the curved shell, and finally drillingof the highly-deviated well is realized.
Description
technical field [0001] The application relates to the technical field of oil drilling and mine development, in particular to a method and device for down-the-hole drilling and direction control of highly deviated wells. Background technique [0002] The down-the-hole hammer has changed the traditional way of drilling rocks, broken the rocks into volumes, greatly improved the drilling efficiency and the adaptability of complex formations, and is widely used in geological exploration of oil, natural gas and underground mineral resources, mine development, tunneling, water wells It is widely used in drilling and pipeline laying projects. There are several types of down-the-hole hammers, such as pneumatic, hydraulic, electric and mechanical impactors. In oil drilling and coal mine development, the commonly used type of down-the-hole hammer is mainly pneumatic down-the-hole hammer. When drilling, the air compressor injects high-pressure gas into the drill pipe. After the high-pr...
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): E21B7/02E21B7/06E21B4/14E21B17/07E21B17/10
CPCE21B7/02E21B7/061E21B7/064E21B4/14E21B17/07E21B17/1078
Inventor 魏秦文王圣林尹永清张士明孙宁武王瑞肖鑫源尹永奇祖宝华
Owner ORIENT ENERGY & TECH CO LTD