Anti-deviation straight-drilling combined drilling tool for drilling engineering
A technology of drilling engineering and combined drilling tools, which is applied in directional drilling and other directions, can solve the problems of reducing the quality of drilling wellbore, achieve good wellbore trajectory, low well deviation rate, reduce downhole complex situations and downhole drilling tool accidents Effect
Inactive Publication Date: 2015-09-23
SICHUAN HAYWARD PETROLEUM ENG TECH
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Depend on image 3 It can be seen that in the high-steep structural easy-deviation section, the total amount of well deviation increments produced by traditional pendulum drilling tools and traditional rigid full-bore drilling tools during the drilling process is cumulatively increased, so there will always be a relatively large well deviation in the end. Large oil wells, reducing the quality of the wellbore being drilled
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 further described below in conjunction with accompanying drawing:
[0019] Such as figure 1 and figure 2 As shown, the anti-deflection and straightening combined drilling tool for drilling engineering according to the present invention includes a drill bit 21, a triangular drill collar 31, a short drill collar 41 and a drill stabilizer 51, and the triangular drill collar 31 is uniformly arranged with three holes on the circumference. A drill collar with a straight edge 32 and the length of the straight edge 32 is consistent with the standard nominal length of the drill collar, that is, the length of the straight edge 32 is 9.15 meters or 9.45 meters, and the surface of the outer edge 34 of the triangular drill collar 31 is inlaid with hard The alloy tooth 35, the short drill collar 41 is a cylindrical drill collar whose length is less than the standard nominal length of the drill collar, the first end of the triangular drill collar 31 is...
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 an anti-deviation straight-drilling combined drilling tool for drilling engineering. The anti-deviation straight-drilling combined drilling tool comprises a drill bit, a three-edge drill collar, a short drill collar and a drilling tool stabilizer, wherein the three-edge drill collar is a drill collar which is uniformly provided with three straight edges on the circumference, and the short drill collar is a cylindrical drill collar which is shorter than the three-edge drill collar; the drill bit, the three-edge drill collar, the short drill collar and the drilling tool stabilizer are sequentially connected. The three-edge drill collar is combined with the drilling tool stabilizer and connected with the drilling tool stabilizer through the short drill collar so as to form a single stable pendulum drilling tool combination. Therefore, the combined drilling tool has the effects of both a rigid packed hole drilling tool and a pendulum drilling tool, has a functional characteristic of being stable with a slight decline in the drilling process, achieves a clipping effect on well deviation, significantly reduces sawtooth waves of a well deviation curve, greatly reduces accumulation of a well deviation graining rate, obtains a good well track, and has a great practical value.
Description
technical field [0001] The invention relates to a drilling tool for drilling, in particular to a combination drilling tool for anti-deviation and straightening used in drilling engineering. Background technique [0002] In the process of oil drilling, due to the existence of formation dip angle, when the drill bit drills to the interface of formation lithology change, there will be a difference in lithology on the horizontal plane, and the drill bit will produce horizontal displacement in the radial direction, which is commonly referred to as formed a stratigraphic step. [0003] The existence of stratum dip angle is the prerequisite for the high-steep structure and easy-to-deviation area, but it is only the cause of well deviation. The frequency of stratum lithology change and the difference of stratum lithology change are the main factors affecting well deviation. reason. The well deviation curve of the high-steep structure is essentially composed of many micro-sawtooth ...
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): E21B7/10
Inventor 卢长生刘兆康
Owner SICHUAN HAYWARD PETROLEUM ENG TECH