Deep oil and gas well drill bit
The drill bit design with a scooping pipe and interception assemblies addresses the transport issue of rock cuttings, enhancing drilling efficiency and service life by cleaning cuttings and improving fluid circulation.
Patent Information
- Application Number
- CN202421210232.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-30
AI Technical Summary
During deep oil and gas well drilling, rock cuttings in the borehole are not effectively transported, leading to drilling inefficiencies and potential drill sticking issues due to lost drilling fluid and complex formations.
A drill bit design incorporating a drill pipe, docking studs, a threaded sleeve, a docking piece, and a drill bit, along with a powder scooping pipe, filter screen, and interception assemblies to capture and remove rock cuttings during drilling.
Enhances drilling efficiency and extends the service life of the drill bit by effectively cleaning rock cuttings after drilling, preventing their flowback and improving fluid circulation.
Smart Images
Figure CN222276611U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of petroleum drilling equipment, in particular to a deep oil and gas well drill bit. Background Art
[0002] A deep oil and gas well generally refers to a well located deep underground that is drilled into deep strata to obtain oil and natural gas. A deep oil and gas well drill bit is generally a tool used for drilling during the exploitation of deep underground oil and gas resources.
[0003] During the drilling construction process of deep oil and gas wells, the cuttings cut by the drill bit are transported to the ground through the continuous circulation of drilling fluid, which effectively cleans the borehole and improves the drilling efficiency. However, due to the diversity and complexity of deep formations, special formations such as cracks, leakages, fragmentation, and easy collapse are often encountered during drilling. When passing through such formations, the drilling fluid is easily lost, and the cuttings in the borehole cannot be effectively transported to the ground, which affects the drilling speed and may even cause drill sticking problems.
[0004] Therefore, a deep oil and gas well drill bit is now developed that can clean the rock cuttings generated during the drilling construction process and improve the drilling efficiency and service life of the drill bit. Utility Model Content
[0005] In order to overcome the disadvantage that during the existing deep oil and gas well drilling construction process, the rock cuttings in the borehole cannot be effectively transported to the ground, thereby affecting the drilling speed and even causing the drill to get stuck, the utility model provides a deep oil and gas well drill bit that can clean the rock cuttings generated during the drilling construction process, thereby improving the drilling efficiency and service life of the drill bit.
[0006] The technical solution is as follows: A deep oil and gas well drill bit includes a drill pipe, a first docking stud, a threaded sleeve, a docking piece, a second docking stud and a drill bit. The first docking stud is connected to the upper side of the drill pipe, the threaded sleeve is connected to the lower side of the drill pipe, the second docking stud is threadedly connected to the threaded sleeve, the lower side of the second docking stud is connected to the docking piece, and the lower side of the docking piece is connected to the drill bit.
[0007] Preferably, a powder scooping pipe, a filter screen and an interception assembly are also included. The powder scooping pipe is connected to the outside of the drill rod, a filter screen is connected between the upper side of the powder scooping pipe and the drill rod, and multiple groups of interception assemblies are connected to the upper part of the drill rod.
[0008] Preferably, a plug is provided at the lower part of the powder scooping tube.
[0009] Preferably, the diameter of the powder scooping tube is slightly smaller than the diameter of the drill bit.
[0010] Preferably, the interception assembly includes a first interception member and a second interception member, a plurality of first interception members are connected to the upper part of the drill rod, a plurality of second interception members are also connected to the upper part of the drill rod, the first interception members are all located below the second interception members of the same group, the first interception members are all located under the second interception members of the same group and cooperate with each other, and the first interception members are all in contact with the powder scooping pipe.
[0011] Preferably, the second intercepting member is a terrace-shaped structure.
[0012] The beneficial effects of the utility model are as follows: during the drilling process, the rock cuttings will enter the powder bailing pipe after the drilling fluid surges up. After the drill is pulled out, the plug at the bottom of the powder bailing pipe is removed to take out the rock cuttings inside the powder bailing pipe, thereby achieving the effect of cleaning the rock cuttings generated during the drilling construction process and improving the drilling efficiency and service life of the drill bit. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.
[0014] Figure 2 It is a three-dimensional structural sectional view of the utility model.
[0015] Figure 3 It is an exploded view of the three-dimensional structure of the utility model.
[0016] Figure 4 It is a partial schematic diagram of the three-dimensional structure of the utility model.
[0017] Figure 5 It is a partial cross-sectional view of the three-dimensional structure of the utility model.
[0018] Figure numbers: 1_drill rod, 11_first docking stud, 2_threaded sleeve, 3_docking piece, 31_second docking stud, 4_drill bit, 5_powder scooping tube, 6_filter screen, 7_first intercepting piece, 8_second intercepting piece. DETAILED DESCRIPTION
[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0020] A deep oil and gas well drill bit, such as Figure 1-Figure 5 As shown, it includes a drill rod 1, a first docking stud 11, a threaded sleeve 2, a docking piece 3, a second docking stud 31 and a drill bit 4. The first docking stud 11 is connected to the upper side of the drill rod 1, the threaded sleeve 2 is connected to the lower side of the drill rod 1, the second docking stud 31 is threadedly connected to the threaded sleeve 2, the lower side of the second docking stud 31 is connected to the docking piece 3, and the lower side of the docking piece 3 is connected to the drill bit 4.
[0021] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, it also includes a powder scooping pipe 5, a filter screen 6 and an interception component. The powder scooping pipe 5 is connected to the outside of the drill rod 1. A plug is provided at the bottom of the powder scooping pipe 5 to facilitate the removal of rock cuttings. A filter screen 6 is connected between the upper side of the powder scooping pipe 5 and the drill rod 1. The diameter of the powder scooping pipe 5 is slightly smaller than the diameter of the drill bit 4 to facilitate the movement of the powder scooping pipe 5 in the borehole. Multiple groups of interception components are connected to the upper part of the drill rod 1.
[0022] like Figure 5 As shown, the interception assembly includes a first interception member 7 and a second interception member 8. A plurality of first interception members 7 are connected to the upper part of the drill rod 1. A plurality of second interception members 8 are also connected to the upper part of the drill rod 1. The second interception members 8 are step-shaped structures. The first interception members 7 are all located below the second interception members 8 of the same group. The first interception members 7 are all located under the second interception members 8 of the same group and cooperate with each other. The first interception members 7 are all in contact with the powder scooping tube 5.
[0023] When using the utility model, the drill rod 1 is first connected to the drilling rig through the first docking stud 11, and then connected to the threaded sleeve 2 through the second docking stud 31, and the drill bit 4 is installed on the drill rod 1, and then the drill rod 1 is extended into the well, and then the drilling rig is started to rotate the drill rod 1, so that the drill bit 4 rotates to drill. During the drilling process, due to the characteristic that the generated rock cuttings can be suspended in the drilling fluid, the rock cuttings will surge with the drilling fluid, and then enter the powder catching pipe 5 after being filtered by the filter screen 6, and then pass through the first interception member 7 and the second interception member 8 in the interception assembly, and then settle at the bottom of the powder catching pipe 5. The mutual cooperation of the first interception member 7 and the second interception member 8 can intercept the rock cuttings at the bottom of the powder catching pipe 5 to prevent the rock cuttings from flowing out of the powder catching pipe 5 in the reverse direction. After pulling out the drill, the plug at the bottom of the powder catching pipe 5 is removed, and the rock cuttings inside the powder catching pipe 5 are taken out, thereby playing a role in cleaning the rock cuttings generated during the drilling construction process and improving the drilling efficiency and service life of the drill bit 4.
[0024] The above description is only an example of the implementation of the present invention and is not intended to limit the present invention. Any equivalent replacement made within the principle of the present invention shall be included in the protection scope of the present invention. The contents not elaborated in the present invention belong to the existing technology known to the technicians in this professional field.
Claims
1. A deep oil and gas well drill bit, characterized in that: The drill rod (1) comprises a first butt joint stud (11), a threaded sleeve (2), a butt joint piece (3), a second butt joint stud (31) and a drill bit (4); the first butt joint stud (11) is connected to the upper side of the drill rod (1); the threaded sleeve (2) is connected to the lower side of the drill rod (1); the second butt joint stud (31) is threadedly connected to the upper side of the threaded sleeve (2); the butt joint piece (3) is connected to the lower side of the second butt joint stud (31); and the drill bit (4) is connected to the lower side of the butt joint piece (3); It also comprises a powder scooping pipe (5), a filter screen (6) and an interception assembly. The outer side of the drill rod (1) is connected to the powder scooping pipe (5), the upper side of the powder scooping pipe (5) and the drill rod (1) are connected to the filter screen (6), and the upper part of the drill rod (1) is connected to a plurality of interception assemblies.
2. A deep oil and gas well drill bit according to claim 1, characterized in that: A plug is provided at the lower part of the powder scooping pipe (5).
3. A deep oil and gas well drill bit according to claim 1, characterized in that: The diameter of the powder scooping tube (5) is slightly smaller than the diameter of the drill bit (4).
4. A deep oil and gas well drill bit according to claim 1, characterized in that: The interception assembly comprises a first interception member (7) and a second interception member (8); a plurality of first interception members (7) are connected to the upper portion of the drill rod (1); a plurality of second interception members (8) are also connected to the upper portion of the drill rod (1); the first interception members (7) are all located below the second interception members (8) of the same group; the first interception members (7) are all located below the second interception members (8) of the same group and cooperate with each other; and the first interception members (7) are all in contact with the powder scooping tube (5).
5. A deep oil and gas well drill bit according to claim 4, characterized in that: The second intercepting member (8) is a stepped structure.