CN210660006U - Intelligent coring tool for measurement while drilling - Google Patents
Intelligent coring tool for measurement while drilling Download PDFInfo
- Publication number
- CN210660006U CN210660006U CN201921610356.1U CN201921610356U CN210660006U CN 210660006 U CN210660006 U CN 210660006U CN 201921610356 U CN201921610356 U CN 201921610356U CN 210660006 U CN210660006 U CN 210660006U
- Authority
- CN
- China
- Prior art keywords
- main piston
- pin
- inner cylinder
- piston
- communication hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model belongs to the oil geology drilling equipment field especially relates to a drill along with boring test intelligence coring tool, including top connection, short circuit, urceolus, drill bit, inner tube and rock core claw, still include main piston, hang the bearing assembly, cut core ball and coring ball, main piston, hang bearing assembly, inner tube and rock core claw be in coring tool shell inside loop through screw thread fixed connection from top to bottom, wherein, the upper end of main piston be provided with cut core ball complex sealed face, pin and top connection fixed connection are passed through to the side of main piston, the structure of hanging the bearing assembly include the connector, press cap A, lower connector, press cap B and bearing, wherein, go up the connector with main piston connect. And the side surface of the upper connecting body is provided with a liquid passing hole for the drilling liquid to pass through. The utility model discloses a design to the soft stratum of shallow layer, not diagenesis stratum and broken stratum specially, solved current coring tool shallow layer and got the problem that the success rate is low.
Description
Technical Field
The invention belongs to the field of petroleum geological drilling equipment, and particularly relates to an intelligent coring tool for a test while drilling.
Background
The coring tool is a necessary operation tool in the process of petroleum geological drilling, and during the coring process, the sampling analysis needs to be carried out on oil reservoir gas overflowing after rock breaking. In the prior art, because a downhole gas sample cannot be directly obtained, the gas dispersed in drilling mud can only be separated by a degasser to realize sampling, but the components of the obtained sample are different from the real components of oil reservoir gas, so that the accuracy of judging the formation condition is influenced.
In addition, the measurement while drilling technology is a high-tech drilling technology that has emerged in recent years, changes the traditional logging mode, can directly acquire information such as lithology, formation pressure and the like in the formation during the drilling process, and if the measurement while drilling technology is combined on a coring tool, the quantity of the tools is reduced, and the length of a tool string is shortened.
Disclosure of Invention
The invention provides an intelligent coring tool for testing while drilling, which aims to solve the problems in the background technology.
The technical problem solved by the invention is realized by adopting the following technical scheme:
the invention comprises an upper joint, an outer cylinder and an inner cylinder assembly, wherein the upper ends of the outer cylinder and the inner cylinder assembly are connected on the upper joint, the lower end of the outer cylinder is connected with a coring bit, the lower end of the inner cylinder assembly is connected with a core claw, the inner cylinder assembly structurally comprises a main piston, an inner cylinder plug and an inner cylinder, the main piston is inserted in the center of the upper joint, the lower end of the main piston extends out of the lower end of the upper joint, the outer side of the lower end of the main piston is sleeved with a threaded movable sleeve, a thrust bearing is arranged in an annular space between the threaded movable sleeve and the outer surface of the main piston, the lower end of the main piston is connected with a, the upper end of the inner cylinder plug is connected with the threaded movable sleeve through threads, the lower end of the inner cylinder plug is connected with the upper end of the inner cylinder through threads, the core claw is connected to the lower end of the inner cylinder through threads, and a switching piston is arranged in the inner cylinder plug;
the center of the main piston and the center of the switching piston are both provided with a liquid passing channel, the diameter of the liquid passing channel on the main piston is larger than that of the liquid passing channel on the switching piston, the upper ends of the two liquid passing channels are both provided with conical surfaces for sealing, the side surface of the main piston is provided with a pin A and a pin B, the pin A and the pin B are both connected in a threaded hole on the upper joint through threads, the tail end of the pin A is inserted in the pin hole on the side surface of the main piston, thereby the main piston is fixedly connected on the upper joint, the side surface of the main piston is processed with a sliding groove along the axial direction, the tail end of the pin B is inserted into the chute and is positioned at the lower end of the chute, the side surface of the switching piston is fixedly connected to the side wall of the inner cylinder plug through a pin C, and a liquid passing hole is formed in the side wall of the inner cylinder plug, and when the pin C is not sheared, the switching piston is positioned on the upper side of the liquid passing hole.
Processing the recess on the top connection, being provided with gas collector in the recess, gas collector fixed mounting is on the top connection, is provided with air chamber, one-way mechanism and the inlet channel of admitting air in the gas collector, one-way outlet end of admitting air the mechanism with the air chamber intercommunication, go up on the connection with one-way mechanism and the inlet channel of admitting air correspond respectively and are provided with intercommunicating pore A and intercommunicating pore B, the side of master piston is provided with the intercommunication groove that is used for communicateing intercommunicating pore A and intercommunicating pore B, and the outside of master piston still is provided with the sealing washer that is used for keeping apart intercommunicating pore A and intercommunicating pore B, and this sealing washer is located the downside of intercommunication groove, when pin A was not.
The upper end of the upper joint is connected with a measurement while drilling short circuit for measuring resistivity and formation pressure.
The invention has the beneficial effects that:
1. the invention realizes underground sampling by improving the existing coring tool, and furthest ensures the accuracy of sample components.
2. The coring tool is provided with the measurement while drilling short circuit, so that the coring tool has the function of measuring resistivity and formation pressure, and although the measurement while drilling short circuit exists in the prior art, the measurement while drilling short circuit can be arranged on the coring tool to guide the coring process, thereby improving the coring success rate.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a partially enlarged view of a portion a in fig. 1.
In the figure: 1-measurement while drilling short circuit, 2-upper joint, 3-main piston, 4-loop joint, 5-thrust bearing, 6-limit sleeve, 7-liquid passing hole, 8-inner cylinder plug, 9-outer cylinder, 10-drill bit, 11-core claw, 12-switching piston, 13-sealing ball B, 14-sealing ring, 15-communicating hole B, 16-air inlet channel, 17-one-way air inlet mechanism, 18-communicating hole A, 19-communicating groove, 20-air chamber, 21-air collector, 22-inner cylinder, 23-pin A, 24-pin B, 25-pin C, 26-sliding groove, 27-sealing ball A and 28-rubber ring.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
the embodiment comprises an upper joint 2, an outer cylinder 9 and an inner cylinder assembly, wherein the upper ends of the outer cylinder 9 and the inner cylinder assembly are connected to the upper joint 2, the lower end of the outer cylinder 9 is connected with a coring bit 10, and the lower end of the inner cylinder assembly is connected with a core claw 11. The above conventional structure in the prior art is not described in detail herein.
In this embodiment, the inner cylinder assembly structurally comprises a main piston 3, an inner cylinder plug 8 and an inner cylinder 22, the main piston 3 is inserted into the center of the upper joint 2, and the inner cylinder assembly is connected to the upper joint 2 through the main piston 3, so that the inner cylinder assembly is mounted in the coring tool.
The lower end of the main piston 3 extends out of the lower end of the upper connector 2, a threaded movable sleeve 4 is sleeved on the outer side of the lower end of the main piston 3, a thrust bearing 5 is arranged in an annular space between the threaded movable sleeve 4 and the outer surface of the main piston 3, the lower end of the main piston 3 is connected with a limiting sleeve 6 used for blocking the thrust bearing 5 to slide downwards through threads, and the upper end of the inner cylinder plug 8 is connected with the threaded movable sleeve 4 through threads. The threaded movable sleeve 4, the limiting sleeve 6 and the thrust bearing 5 form a rotatable connection between the main piston 3 and the inner cylinder plug 8. The lower end of the inner barrel plug 8 is connected with the upper end of the inner barrel 22 through threads, the core claw 11 is connected to the lower end of the inner barrel 22 through threads, and during coring, the upper joint 2 rotates and the inner barrel 22 does not rotate, so that damage to a core in the inner barrel 22 after rotation is avoided.
A switching piston 12 is arranged in the inner cylinder plug 8, and the switching piston 12 has two stable position states, one position state is shown in fig. 2, the switching piston 12 is positioned at the upper side of the liquid passing hole 7, and the other position state is that the switching piston 12 is positioned at the lower side of the liquid passing hole 7.
Liquid passing channels are arranged in the centers of the main piston 2 and the switching piston 12, the diameter of the liquid passing channel on the main piston 3 is larger than that of the liquid passing channel on the switching piston 12, and conical surfaces with sealing effects are arranged at the upper ends of the two liquid passing channels.
The side surface of the main piston 3 is provided with a pin A23 and a pin B24, the pin A23 and the pin B24 are both connected in a threaded hole on the upper joint 2 through threads, the tail end of the pin A23 is inserted in a pin hole on the side surface of the main piston 3, so that the main piston 3 is fixedly connected on the upper joint 2, the side surface of the main piston 3 is provided with an axial sliding groove 26, the tail end of the pin B24 is inserted in the sliding groove 26 and is positioned at the lower end of the sliding groove 26, the side surface of the switching piston 12 is fixedly connected on the side wall of the inner cylinder plug 8 through a pin C25, a liquid passing hole 7 is formed in the side wall of the inner cylinder plug 8, and when the pin C25 is not sheared, the switching piston 12 is positioned on the upper side.
The sealing device is characterized in that a groove is processed in the upper connector 2, a gas collector 21 is arranged in the groove, the gas collector 21 is fixedly mounted on the upper connector 2, a gas chamber 20, a one-way gas inlet mechanism 17 and a gas inlet channel 16 are arranged in the gas collector 21, the outlet end of the one-way gas inlet mechanism 17 is communicated with the gas chamber 20, a communication hole A18 and a communication hole B14 are respectively and correspondingly arranged on the upper connector 2 and the one-way gas inlet mechanism 17 and the gas inlet channel 16, a communication groove 19 for communicating the communication hole A18 with the communication hole B14 is formed in the side face of the main piston 3, a sealing ring 15 for isolating the communication hole A18 from the communication hole B5 is further arranged on the outer side of the main piston 3, the sealing ring 15 is located on the lower side of the communication groove 19, and when the pin A23 is not sheared.
The working process of the invention is as follows:
firstly, the device is put into a well through a drill rod, a motor is started to start coring drilling, at the moment, a sealing ball A27 and a sealing ball B13 are not put in the device, and during drilling, drilling fluid passes through liquid passing channels on a main piston 3 and a switching piston 12 in sequence, passes through a liquid passing hole 7 on an inner cylinder plug 8 and is discharged through an annular space between an inner cylinder 22 and an outer cylinder 9.
And step two, stopping drilling and throwing a sealing ball B13 into the drill pipe when detecting that reservoir gas overflows in the drilling fluid returned out of the wellhead, wherein the sealing ball B13 seals a liquid passing channel in the center of the switching piston 12 to prevent the drilling fluid from passing through, then pressing the drilling rod, shearing the pin A23 with poor shearing resistance, downwards moving the inner cylinder assembly together with the core claw 11, wherein the moving range is limited by the length of the chute 26, and when the tail end of the pin B24 slides to the upper end of the chute 26, the inner cylinder assembly stops sliding.
After the sliding-down process is completed, the seal ring 15 is moved out from between the communication hole a18 and the communication hole B14, and the communication hole a18 and the communication hole B14 are both communicated with the communication groove 19. At this time, the gas overflowing from the formation passes through the gas inlet channel 16, the communication hole B14, the communication groove 19, the communication hole a18 and the one-way gas inlet mechanism 17 in sequence and enters the gas chamber 20, and the gas inlet is stopped after the internal pressure and the external pressure of the gas chamber are balanced, so that the gas collection is completed.
And step three, further increasing the pressure in the drill pipe, shearing the pin C25 with shearing resistance weaker than that of the pin B24, and switching the piston 12 to descend to the lower side of the liquid through hole 7, so that the drilling fluid channel is opened again, and the interrupted coring drilling process is continued.
And step four, after the core drilling process is finished, putting a sealing ball A27 into the drill rod, plugging a liquid passing channel in the center of the main piston 3 by the sealing ball A27, then pressing the drill rod again, and shearing the pin C25 by the main piston 3 under the action of pressure to enable the core claw 11 to move downwards to finish core cutting.
And fifthly, pulling the drill rod out of the well together with the invention to obtain a gas sample and a core sample.
The invention realizes underground sampling by improving the existing coring tool, and ensures the accuracy of sample components to the maximum extent
The coring tool is provided with the measurement while drilling short circuit, so that the coring tool has the function of measuring resistivity and formation pressure, and although the measurement while drilling short circuit exists in the prior art (like devices are described in two patents with patent numbers of CN2015109460630 and CN 201110178983.4), the coring tool can be arranged on the coring tool to guide the coring process, thereby improving the coring success rate.
Claims (2)
1. The utility model provides a along with boring test intelligence coring tool, includes top connection (2), urceolus (9) and inner tube subassembly, the upper end of urceolus (9) and inner tube subassembly is all connected on top connection (2), and the lower extreme of urceolus (9) is connected with coring bit (10), the lower extreme of inner tube subassembly is connected with rock core claw (11), its characterized in that: the structure of the inner barrel assembly comprises a main piston (3), an inner barrel plug (8) and an inner barrel (22), the main piston (3) is inserted in the center of the upper joint (2), the lower end of the main piston (3) extends out from the lower end of the upper joint (2), a threaded movable sleeve (4) is sleeved outside the lower end of the main piston (3), a thrust bearing (5) is arranged in an annular space between the threaded movable sleeve (4) and the outer surface of the main piston (3), the lower end of the main piston (3) is connected with a limiting sleeve (6) used for blocking the thrust bearing (5) from sliding downwards through threads, the upper end of the inner cylinder plug (8) is connected with the threaded movable sleeve (4) through threads, the lower end of the inner cylinder plug (8) is connected with the upper end of the inner cylinder (22) through threads, the core claw (11) is connected to the lower end of the inner cylinder (22) through threads, and a switching piston (12) is arranged in the inner cylinder plug (8);
the center of the main piston (3) and the center of the switching piston (12) are both provided with a liquid passing channel, the diameter of the liquid passing channel on the main piston (3) is larger than that of the liquid passing channel on the switching piston (12), the upper ends of the two sections of liquid passing channels are both provided with conical surfaces with sealing effects, the side surface of the main piston (3) is provided with a pin A (23) and a pin B (24), the pin A (23) and the pin B (24) are both connected in a threaded hole on the upper joint (2) through threads, the tail end of the pin A (23) is inserted in a pin hole on the side surface of the main piston (3), so that the main piston (3) is fixedly connected on the upper joint (2), the side surface of the main piston (3) is processed with an axial sliding groove (26), the tail end of the pin B (24) is inserted in the sliding groove (26) and is positioned at the lower end of the sliding groove (26), and the side surface of the switching piston (12) is fixedly connected on the side wall of the inner cylinder, a liquid passing hole (7) is formed in the side wall of the inner cylinder plug (8), and when the pin C (25) is not sheared, the switching piston (12) is located on the upper side of the liquid passing hole (7);
the sealing device is characterized in that a groove is processed on the upper connector (2), a gas collector (21) is arranged in the groove, the gas collector (21) is fixedly installed on the upper connector (2), a gas chamber (20), a one-way gas inlet mechanism (17) and a gas inlet channel (16) are arranged in the gas collector (21), the outlet end of the one-way gas inlet mechanism (17) is communicated with the gas chamber (20), a communication hole A (18) and a communication hole B (14) are respectively arranged on the upper connector (2) and correspond to the one-way gas inlet mechanism (17) and the gas inlet channel (16), a communication groove (19) for communicating the communication hole A (18) with the communication hole B (14) is formed in the side surface of the main piston (3), a sealing ring (15) for isolating the communication hole A (18) from the communication hole B (14) is further arranged on the outer side of the main piston (3), and the sealing ring, when the pin A (23) is not sheared, the seal ring (15) is interposed between the communication hole A (18) and the communication hole B (14).
2. The intelligent coring while drilling tool of claim 1, wherein: the upper end of the upper joint (2) is connected with a measurement while drilling short circuit (1) for measuring resistivity and formation pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921610356.1U CN210660006U (en) | 2019-09-26 | 2019-09-26 | Intelligent coring tool for measurement while drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921610356.1U CN210660006U (en) | 2019-09-26 | 2019-09-26 | Intelligent coring tool for measurement while drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210660006U true CN210660006U (en) | 2020-06-02 |
Family
ID=70837633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921610356.1U Active CN210660006U (en) | 2019-09-26 | 2019-09-26 | Intelligent coring tool for measurement while drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210660006U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110593792A (en) * | 2019-09-26 | 2019-12-20 | 大庆市达美石油装备制造有限公司 | Intelligent coring tool for measurement while drilling |
-
2019
- 2019-09-26 CN CN201921610356.1U patent/CN210660006U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110593792A (en) * | 2019-09-26 | 2019-12-20 | 大庆市达美石油装备制造有限公司 | Intelligent coring tool for measurement while drilling |
| CN110593792B (en) * | 2019-09-26 | 2023-06-27 | 大庆市达美石油装备制造有限公司 | Intelligent coring tool for measurement while drilling |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101769134B (en) | Sealed core drilling device for underground coal seams and application method thereof | |
| CN112627755B (en) | Lifting drill type large-diameter well bottom in-situ pressure maintaining coring drilling tool | |
| CN101403296A (en) | Delamination pressure testing method for oil well without stop production | |
| US3146837A (en) | System for obtaining trube core samples | |
| CN210660006U (en) | Intelligent coring tool for measurement while drilling | |
| CN102296950A (en) | Hydraulic shearing type sampling drilling tool | |
| CN112855134B (en) | Midway test device and test method for stationary drilling tool | |
| CN202381090U (en) | Impact-type underground sampling device | |
| CN203321393U (en) | Medium-soft rock core extractor | |
| CN105525885A (en) | Rotating inserting type coring tool for extremely-loose stratum | |
| CN110593792B (en) | Intelligent coring tool for measurement while drilling | |
| CN204200134U (en) | A kind of pole unconsolidated formation is rotatably inserted into formula coring tool | |
| CN210888860U (en) | Coring drilling tool with high coring rate | |
| CN206053884U (en) | sealing liquid rope coring drill | |
| CN214944127U (en) | Three-elastic-clamping-type pressure-maintaining sampling drilling tool for closing ball valve hydrate by lifting | |
| CN209342415U (en) | A kind of underground coal mine sampler | |
| RU2198996C2 (en) | Core barrel | |
| CN219245062U (en) | Double-air chamber sampler | |
| CN201588576U (en) | Downhole coalbed sealed coring device | |
| CN111894478A (en) | RD type safety joint | |
| CN201241696Y (en) | Geological exploration drilling coal seam gas pressure determinator | |
| CN110656931B (en) | Mining hydraulic drilling-following diameter measuring device and method | |
| US2213595A (en) | Pressure core barrel | |
| USRE21951E (en) | Pressube core barrel | |
| CN221078127U (en) | Underground mine room safety sampling device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |