Claw type centralizer suitable for directional well of complex coal seam group
By introducing the design of regulatory bands, positioning blocks, rolling rollers and limit frameworks in the claw type corrector settled by complex coal seams, the existing correctioner is difficult to adjust in the complex coal seam position and difficulty in oil pumping rod limits. The problem realizes the stability and service life of higher oil pumping rods.
Patent Information
- Application Number
- CN202420456499.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-11
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-03-11
AI Technical Summary
In complex coal seams, existing regularizers are difficult to effectively adjust their position and control the suction rod, resulting in the risk of deformation of the sleeve and casing, affecting the stability and service life of the suction rod.
A claws that are suitable for complex coal seams are designed. The effective limit and adjustment of the oil pumping rod can be achieved by setting up a regulatory belt, positioning block, rolling roller and limit framework in the installer.
By the design of the claws, the corrector of the claws ensures the effective rise and decline of the corrector, the angle control of the limit framework, and the position confirmation of the fluorescent labeling. , Reduced the risk of turning.
Smart Images
Figure CN222414772U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of claw type centralizers, in particular to a claw type centralizer suitable for directional wells of complex coal seam groups. Background Art
[0002] Horizontal well drilling technology is a new process to improve exploration and development effects, single well production and reservoir recovery rate. It has promoted the development of oil extraction technology and has been listed as one of the most important key technologies in today's oil industry. The "casing cementing and perforating completion technology" is used as the main completion technology in the horizontal well completion process. In the horizontal well casing cementing and perforating completion technology, how to improve the displacement efficiency and strengthen the displacement effect is one of the important links in horizontal well cementing, and "casing centering" is the main reason for improving the displacement efficiency and strengthening the displacement effect. The two types of stabilizers currently used in the market are elastic stabilizers and rigid stabilizers as the only means to improve the casing centering.
[0003] However, during actual operations, it is necessary to effectively adjust the position of the stabilizer, and the stabilizer needs to be connected to the sucker rod in complex coal seams to facilitate the extension of the detection range. Therefore, we need a claw-type stabilizer suitable for directional wells in complex coal seam groups. Utility Model Content
[0004] 1. Technical issues to be resolved
[0005] In view of the deficiencies of the prior art, the utility model provides a claw-type centralizer suitable for directional wells in complex coal seam groups.
[0006] (II) Technical solution
[0007] To achieve the above object, the utility model provides the following technical solution: a claw-type centralizer suitable for directional wells in complex coal seams, comprising an installer, an adjusting belt is arranged inside the installer, and a claw-type centralizer is arranged at the bottom of the adjusting belt;
[0008] The installer comprises a positioning block, the back side of which is fixedly connected with four mounting sleeves, a transmission hole is provided on the top of the positioning block, and a combing plate is provided inside the transmission hole.
[0009] Preferably, the inner side of the positioning block is rotatably connected to a winding roller through two fixing sleeves. By setting the mounting sleeve in the installer, it can be effectively connected to the fixed object, and its combing plate can effectively prevent the adjustment belt from being wound into a ball inside the positioning block, affecting the extension of the adjustment belt to raise and lower the claw-type centralizer.
[0010] Preferably, one end of the adjustment belt passes through the transmission hole and extends upward to be rolled up on the outer wall of the winding roller, and the adjustment belt is rolled up to one end of the winding roller and fixedly connected to a limit block. By setting the winding roller, the adjustment belt can be effectively rolled up.
[0011] Preferably, the claw centralizer comprises: a connecting block, the connecting block is fixedly connected to one end of the adjusting belt away from the positioning block, and the bottom of the connecting block is rotatably connected to the limiting frame via a rotating shaft. The adjusting belt and the limiting frame can be effectively connected by providing the connecting block, and the rotating shaft provided at the bottom thereof can effectively control the angle of the limiting frame so as to adjust the sucker rod for limiting.
[0012] Preferably, a fluorescent mark is provided on the top of the limit frame. By providing the fluorescent mark, the limit frame can confirm the current position and angle. After drilling a coalbed methane directional well in a complex, multiple, and thin coal seam group, there is a relatively large risk of casing deformation. If casing deformation occurs, the sucker rod is prone to wear left and right during drainage, leading to a series of problems including pump jamming, bare rod wear, etc. The claw-type centralizer can be used to check the sucker rod and the claw-type centralizer on the sucker rod during the pump inspection process, so that it can be relatively clear where the casing deformation occurs by observing the wear of each claw, so as to carry out well repair operations in a targeted manner.
[0013] Preferably, a connecting column is fixedly passed through the interior of the limit frame, a plurality of slide grooves are provided on the outer wall of the connecting column, an adjusting claw rod is movably connected inside the slide groove, a limit plate is fixedly connected to the inner side of the limit frame, and a clamping groove is provided on the top of the adjusting claw rod. The position of the adjusting claw rod can be effectively adjusted by providing the slide groove and the adjusting claw rod to cooperate with each other, and the sucker rod can be limited by using the clamping groove provided on the top.
[0014] (III) Beneficial effects
[0015] Compared with the prior art, the utility model provides a claw-type centralizer suitable for directional wells in complex coal seams, which has the following beneficial effects:
[0016] 1. The claw-type centralizer suitable for directional wells with complex coal seams can be effectively connected to a fixed object by setting a mounting sleeve in the installer. The combing plate can effectively prevent the adjustment belt from being wound into a ball inside the positioning block, affecting the extension of the adjustment belt to raise and lower the claw-type centralizer. The winding roller can effectively wind up the adjustment belt.
[0017] 2. The claw-type centralizer, which is suitable for directional wells in complex coal seam groups, can effectively connect the adjustment belt and the limit frame by setting a connecting block, and the rotating shaft set at the bottom can effectively control the angle of the limit frame so as to adjust the sucker rod for limiting. The fluorescent mark can enable the limit frame to confirm the current position and angle. The slide groove and the adjusting claw rod cooperate with each other to effectively adjust the position of the adjusting claw rod, and the clamping groove set at the top can be used to limit the sucker rod. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0019] Figure 1 It is a front perspective view of the utility model;
[0020] Figure 2 It is a rear perspective view of the utility model;
[0021] Figure 3 It is a side cutaway stereogram of the utility model.
[0022] In the figure: 1. installer; 2. adjustment belt; 3. claw-type straightener; 4. limit block; 101. positioning block; 102. mounting sleeve; 103. transmission hole; 104. combing plate; 105. winding roller; 301. connecting block; 302. rotating shaft; 303. limit frame; 304. connecting column; 305. slide groove; 306. adjusting claw rod; 307. limit plate; 308. clamping groove. DETAILED DESCRIPTION
[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0024] Example 1
[0025] like Figure 1-3As shown, the utility model provides a claw-type centralizer suitable for directional wells of complex coal seam groups, including an installer 1, an adjusting belt 2 is arranged inside the installer 1, and a claw-type centralizer 3 is arranged at the bottom of the adjusting belt 2; the installer 1 includes: a positioning block 101, four mounting sleeves 102 are fixedly connected to the back of the positioning block 101, a transmission hole 103 is opened on the top of the positioning block 101, and a combing plate 104 is arranged inside the transmission hole 103. The inner side of the positioning block 101 is rotatably connected to a winding roller 105 through two fixed sleeves. By setting the mounting sleeve 102 in the installer 1, it can be effectively connected to a fixed object, and its combing plate 104 can effectively prevent the adjusting belt 2 from being wound into a ball inside the positioning block 101, affecting the extension of the adjusting belt 2 to perform the work of ascending and descending the claw-type centralizer. One end of the adjusting belt 2 passes through the transmission hole 103 and extends upward to be wound on the outer wall of the winding roller 105, and one end of the adjusting belt 2 wound to the winding roller 105 is fixedly connected to the limiting block 4. The adjustment belt 2 can be effectively rolled up by providing the winding roller 105 .
[0026] In this embodiment, by setting the installation sleeve 102 in the installer 1, it can be effectively connected to the fixed object, and its combing plate 104 can effectively prevent the adjusting belt 2 from being tangled inside the positioning block 101 and affecting the extension of the adjusting belt 2 to perform the rising and lowering work of the claw-type straightener, and its winding roller 105 can effectively wind up the adjusting belt 2.
[0027] Example 2
[0028] like Figure 1-3 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the claw type centralizer 3 includes: a connecting block 301, the connecting block 301 is fixedly connected to the end of the adjustment belt 2 away from the positioning block 101, and the bottom of the connecting block 301 is rotatably connected to the limit frame 303 through the rotating shaft 302. By setting the connecting block 301, the adjustment belt 2 and the limit frame 303 can be effectively connected, and the rotating shaft 302 set at the bottom can effectively control the angle of the limit frame 303, so as to adjust the sucker rod for limiting. A fluorescent mark is set on the top of the limit frame 303. By setting the fluorescent mark, the limit frame 303 can confirm the current position and angle. A connecting column 304 is fixedly penetrated inside the limit frame 303, and a plurality of slide grooves 305 are opened on the outer wall of the connecting column 304. The inside of the slide groove 305 is movably connected with an adjusting claw rod 306, and the inner side of the limit frame 303 is fixedly connected to a limit plate 307, and the top of the adjusting claw rod 306 is opened with a clamping groove 308.
[0029] In this embodiment, the adjusting belt 2 and the limiting frame 303 can be effectively connected by setting a connecting block 301, and the rotating shaft 302 set at the bottom can effectively control the angle of the limiting frame 303 so as to adjust the sucker rod for limiting. The fluorescent mark can enable the limiting frame 303 to confirm the current position and angle. The slide groove 305 and the adjusting claw rod 306 cooperate with each other to effectively adjust the position of the adjusting claw rod 306, and use the clamping groove 308 set at the top to limit the sucker rod.
[0030] The following is a detailed description of the working principle of the claw-type centralizer suitable for directional wells in complex coal seam groups.
[0031] like Figure 1-3 As shown, when in use, firstly, the installation sleeve 102 in the installer 1 can be effectively connected to the fixed object, and the combing plate 104 can effectively prevent the adjusting belt 2 from being tangled inside the positioning block 101, affecting the extension of the adjusting belt 2 to perform the rising and lowering of the claw-type straightener, and the winding roller 105 can effectively wind up the adjusting belt 2; then, the connecting block 301 can be provided to effectively connect the adjusting belt 2 and the limiting frame 303, and the rotating shaft 302 arranged at the bottom can effectively control the angle of the limiting frame 303, so as to adjust the sucker rod for limiting, the fluorescent mark can enable the limiting frame 303 to confirm the current position and angle, the slide groove 305 and the adjusting claw rod 306 cooperate with each other to effectively adjust the position of the adjusting claw rod 306, and the clamping groove 308 arranged at the top can be used to limit the sucker rod.
Claims
1. A claw-type centralizer suitable for directional wells in complex coal seams, comprising an installer (1), characterized in that: An adjusting belt (2) is arranged inside the installer (1), and a claw-type centralizer (3) is arranged at the bottom of the adjusting belt (2); The installer (1) comprises a positioning block (101), the back of the positioning block (101) being fixedly connected to four mounting sleeves (102), a transmission hole (103) being provided at the top of the positioning block (101), and a combing plate (104) being provided inside the transmission hole (103).
2. The claw-type centralizer suitable for directional wells in complex coal seams according to claim 1 is characterized in that: The inner side of the positioning block (101) is rotatably connected to a winding roller (105) via two fixing sleeves.
3. The claw-type centralizer suitable for directional wells in complex coal seams according to claim 2 is characterized in that: One end of the adjusting belt (2) passes through the transmission hole (103) and extends upward to be wound around the outer wall of the winding roller (105), and one end of the adjusting belt (2) wound around the winding roller (105) is fixedly connected to a limiting block (4).
4. The claw-type centralizer suitable for directional wells in complex coal seams according to claim 2 is characterized in that: The claw-type centralizer (3) comprises a connecting block (301), the connecting block (301) being fixedly connected to an end of the adjusting belt (2) away from the positioning block (101), and the bottom of the connecting block (301) being rotatably connected to a limiting frame (303) via a rotating shaft (302).
5. The claw-type centralizer suitable for directional wells in complex coal seams according to claim 4 is characterized in that: A fluorescent mark is provided on the top of the limiting frame (303).
6. The claw-type centralizer suitable for directional wells in complex coal seams according to claim 5 is characterized in that: A connecting column (304) is fixedly passed through the interior of the limit frame (303), a plurality of slide grooves (305) are provided on the outer wall of the connecting column (304), an adjusting claw rod (306) is movably connected inside the slide groove (305), a limit plate (307) is fixedly connected to the inner side of the limit frame (303), and a clamping groove (308) is provided on the top of the adjusting claw rod (306).