CN109882087B - Switching nipple joint of logging-while-drilling instrument - Google Patents
Switching nipple joint of logging-while-drilling instrument Download PDFInfo
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- CN109882087B CN109882087B CN201910153627.3A CN201910153627A CN109882087B CN 109882087 B CN109882087 B CN 109882087B CN 201910153627 A CN201910153627 A CN 201910153627A CN 109882087 B CN109882087 B CN 109882087B
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Abstract
The invention relates to the technical field of measurement while drilling instruments for petroleum drilling, in particular to a switching nipple of a well logging while drilling instrument, which comprises the following components in parts by weight: mainly by the copper ring, copper ring inner seal circle, switching nipple joint body, sealing joint, copper ring outer seal circle, sealing joint sealing washer is constituteed, copper ring and sealing joint are installed respectively to switching nipple joint body both ends, corresponding adaptation joint and the single core contact pin of lateral wall placed in the middle are installed respectively to switching nipple joint both sides, switching nipple joint body installation adaptation joint one side placed in the middle adopts circumference cloth hole design, the little discharge orifice of crossing of symmetrical arrangement 7, the size of the big discharge orifice that crosses of the size of little discharge orifice and installation lateral wall single core contact pin one side keeps the unanimity, it is big, it crosses the transition hole that the discharge orifice is provided with the area of overflowing bigger to cross between the. The invention realizes the matching use of logging-while-drilling instruments with different structures, optimizes the overflowing pore channel, effectively reduces the eddy effect of overflowing mud caused by the change of the overflowing area, and can effectively improve the underground service life of the adapting short section and the matching logging-while-drilling instrument.
Description
Technical Field
The invention relates to the technical field of measurement-while-drilling instruments for petroleum drilling, in particular to a switching nipple of a logging-while-drilling instrument.
Background
At present, along with the entrance of large-scale development of unconventional oil and gas resources such as shale gas and the like, a large number of logging-while-drilling instruments at home and abroad are applied, and the logging-while-drilling instruments with different principles, different structures and different functions are available at various logging-while-drilling technical service providers. The functional pups of the logging-while-drilling instrument generally transmit electric energy and communication signals in a wired connection mode, and instrument manufacturers adopt drill collar end face conducting rings, side wall punching contact pins, middle connectors and other modes for connection in consideration of the structure and functions of the instrument. In order to improve the utilization rate of the logging-while-drilling instrument and better serve a drilling site, a logging-while-drilling technical service provider generally maximizes the utilization rate of the instrument and the quality of the logging-while-drilling service by matching products of different instrument manufacturers. The technical means that the logging-while-drilling instrument switching nipple is reasonable in structure and reliable to use is the simplest and most effective technical means for realizing instrument matching, the main difficulty is that a mud flow channel changes due to the fact that a connecting circuit is switched between connection in the middle and connection on a side wall, vortex is easily formed due to the switching, most of actual effect forms of the existing switching nipple are caused by erosion due to the vortex, and the service life of the erosion can be greatly reduced. At present, no adapter nipple capable of effectively solving the problem exists. Therefore, the switching nipple of the logging-while-drilling instrument with reasonable structure and reliable use is designed to realize the matching and the application of the logging-while-drilling instruments with different structures, so that the method has wider market prospect, and simultaneously provides a structural design method for the optimization of the wired connection of the logging-while-drilling instrument.
Disclosure of Invention
The invention aims to overcome the defects and shortcomings of the prior art, provides the switching nipple of the logging-while-drilling instrument, can meet the use requirements of different instrument manufacturers on the matching and connection of the logging-while-drilling instruments, has a simple structure and reliable connection, effectively solves the problem of erosion caused by mud eddy, and effectively ensures the use reliability of the switching nipple.
In order to achieve the above object, the present invention provides the following technical solutions: the invention relates to a switching nipple joint of a logging-while-drilling instrument, which is characterized in that: mainly comprises a copper ring, a copper ring inner sealing ring, a switching nipple body, a sealing joint, a copper ring outer sealing ring and a sealing joint sealing ring, wherein the copper ring and the sealing joint are respectively arranged at two ends of the switching nipple body, two copper ring outer sealing rings are arranged on the outer side of the copper ring, a copper ring inner sealing ring is arranged on the inner side of the copper ring, the copper ring and the switching nipple body are connected and fixed through small interference fit, a sealing joint sealing ring is arranged on the outer side of the sealing joint and is fixedly connected with the switching nipple body through threads, join in marriage the connection structure who connects logging while drilling instrument as required, corresponding adaptation joint placed in the middle and lateral wall single core contact pin are installed respectively to switching nipple joint both sides, and the adaptation joint placed in the middle passes through the screw thread and connects this body coupling fixedly with switching nipple joint, and lateral wall single core contact pin links together through the wire between the adaptation joint placed in the middle with the side, realizes joining in marriage of different structures logging while drilling instrument and uses.
The invention relates to a switching nipple of a logging-while-drilling instrument, wherein a circumferential hole distribution design is adopted at one side of a switching nipple body, which is provided with a centrally-arranged adapter, 7 small overflowing holes are symmetrically arranged, the size of each small overflowing hole is determined by the size of a large overflowing hole at one side of a single-core contact pin on the installation side wall, namely the total overflowing area of the 7 small overflowing holes is consistent with the area of the large overflowing hole, and a transition hole with a larger overflowing area is arranged between the large overflowing hole and the small overflowing hole, so that the eddy effect of overflowing mud caused by the change of the overflowing area is reduced.
The invention relates to a switching nipple of a logging-while-drilling instrument, wherein a copper ring is made of beryllium bronze, and the two side end faces of the copper ring are provided with dismounting grooves, so that the copper ring can be conveniently dismounted and replaced.
The invention relates to a switching nipple of a logging-while-drilling instrument, wherein a sealing joint is made of beryllium bronze, and 6 dismounting grooves are uniformly distributed in the circumferential direction on the outer side of the end surface of the sealing joint, so that a dismounting tool can be conveniently placed, and the sealing joint can be screwed down, installed or dismounted.
When the connector is used, a connecting structure of the logging-while-drilling instrument is connected according to needs, a middle adapter connector and a side wall single-core contact pin which correspond to each other are respectively installed on two sides of the adapter nipple, the middle adapter connector is fixedly connected with the adapter nipple body through threads, and the side wall single-core contact pin and the middle adapter connector are connected together through a lead, so that the logging-while-drilling instruments with different structures are connected and used.
Compared with the prior art, the invention has the following beneficial effects:
(1) optimizing the flow passage: the invention breakthroughs 7 symmetrical small overflowing holes from the fluid mechanics theory angle and the structural space angle, and adopts the mode that the areas of the large overflowing holes and the small overflowing holes on the two sides are equal and the middle is provided with the transitional hole, so that the eddy current effect is obviously reduced, the erosion problem is solved, the service life of the adapting short section can be effectively prolonged, the underground service life of the logging-while-drilling instrument is prolonged, and the non-drilling time is shortened.
(2) The logging-while-drilling instruments with different structures are matched and used.
(3) The switching nipple joint has the advantages of simple structure, few component parts, low manufacturing cost and convenience in installation, and can meet the requirement of large-scale development of unconventional energy sources such as shale gas at present.
(4) The design features of the switching nipple structure can be expanded to be applied to wired downhole instruments which need to be connected in a lateral wall and middle switching mode.
Drawings
FIG. 1 is a schematic structural diagram of a switching nipple of a logging-while-drilling instrument;
FIG. 2 is a schematic view of a body structure of a switching nipple
FIG. 3 is a schematic view of a copper ring structure
FIG. 4 is a schematic view of a sealing joint structure
In the figure, 1 is a copper ring, 2 is a copper ring inner sealing ring, 3 is a switching short section body, 4 is a sealing joint, 5 is a copper ring outer sealing ring, and 6 is a sealing joint sealing ring.
Detailed Description
As shown in fig. 1, the present invention relates to a coupling nipple of a logging-while-drilling instrument, which is characterized in that: the device mainly comprises a copper ring 1, a copper ring inner sealing ring 2, a switching nipple body 3, a sealing joint 4, a copper ring outer sealing ring 5 and a sealing joint sealing ring 6, wherein the copper ring 1 and the sealing joint 4 are respectively installed at two ends of the switching nipple body 3, the two copper ring outer sealing rings 5 are installed on the outer side of the copper ring 1, the copper ring inner sealing ring 2 is installed on the inner side of the copper ring 1, the copper ring 1 and the switching nipple body 3 are fixedly connected through small interference fit, the sealing joint sealing ring 6 is installed on the outer side of the sealing joint 4 and fixedly connected with the switching nipple body 3 through threads, a connecting structure of a logging-while-drilling nipple instrument is matched and connected according to needs, a corresponding centering adapter joint and a lateral wall single-core contact pin are respectively installed at two sides of the switching nipple, the centering adapter is fixedly connected with the switching nipple body 3 through threads, and the, the logging-while-drilling instruments with different structures are matched and used.
As shown in figure 2, the adapting short section of the logging-while-drilling instrument related by the invention is characterized in that a circumferential hole distribution design is adopted at one side of a central adapting joint installed on a body 3 of the adapting short section, 7 small overflowing holes 3-1 are symmetrically arranged, the size of each small overflowing hole 3-1 is determined by the size of a large overflowing hole 3-4 at one side of a single-core contact pin installed on a side wall, namely the overflowing area of the 7 small overflowing holes 3-1 is consistent with the area of the large overflowing hole 3-4, and the transition holes 3-3 with larger overflowing areas are arranged between the large overflowing holes and the small overflowing holes, so that the eddy effect of overflowing mud caused by the change of the overflowing areas is reduced. And 3-2 is a threading hole for connecting wires at two sides so as to ensure that a circuit in the matching instrument forms a loop. The switching nipple body 3 is made of non-magnetic stainless steel materials.
As shown in FIG. 3, the adapter nipple of the logging-while-drilling instrument related by the invention is characterized in that the copper ring 1 is made of beryllium bronze, and the two side end faces of the copper ring 1 are provided with dismounting grooves 1-1, so that the copper ring 1 can be conveniently dismounted and replaced.
As shown in FIG. 4, the adapter nipple of the logging-while-drilling instrument related by the invention is characterized in that the sealing joint 4 is made of beryllium bronze, 6 detaching grooves 4-1 which are uniformly distributed in the circumferential direction are formed in the outer side of the end face of the sealing joint 4, so that a detaching tool can be conveniently placed, and the sealing joint 4 can be screwed down, installed or detached.
The invention avoids the connecting circuit between the middle connection and the side wall connection through the structural designThe change of the slurry flow channel caused by conversion is realized, the area of the flow channel before and after the slurry passes through the short section is not changed, and the density of the slurry is 1.6g/cm3And a simulation test is carried out under the condition of 25L/s of discharge capacity, the short section adopting the technical scheme of the invention has the normal cycle service time of more than 1000 hours and has no serious erosion phenomenon, the mud eddy phenomenon is effectively reduced, the service life is effectively prolonged, and the use requirement of the current while-drilling instrument can be met.
Particularly, when the well deviation is larger, the working environment of the drilling-while-drilling instrument is worse, the requirement on mechanical strength is higher, the mechanical strength of the technical scheme adopted by the invention is obviously higher than that of the prior art, and therefore, the invention has more advantages in a large well deviation well section compared with the prior art.
The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.
Claims (6)
1. The utility model provides a switching nipple joint of logging while drilling instrument, includes copper ring (1), copper ring inner seal circle (2), switching nipple joint body (3), sealing joint (4), copper ring outer seal circle (5), sealing joint sealing washer (6), characterized by: the two ends of the switching nipple body (3) are respectively provided with a copper ring (1) and a sealing joint (4), two copper ring outer sealing rings (5) are arranged on the outer side of the copper ring (1), the inner side of the copper ring (1) is provided with the inner copper ring sealing ring (2), the copper ring (1) and the adapting short section body (3) are connected and fixed in a small interference fit way, a sealing joint sealing ring (6) is arranged on the outer side of the sealing joint (4), the sealing joint (4) is fixedly connected with the switching nipple body (3) through threads, the two sides of the switching nipple are respectively provided with a corresponding middle adaptive joint and a side wall single-core contact pin, the middle adaptive joint is fixedly connected with the switching nipple body (3) through threads, and the side wall single-core contact pin and the middle adaptive joint are connected together through a lead, so that the logging-while-drilling instruments with different structures are matched and used; the adapter nipple body (3) install adaptation joint one side placed in the middle and adopt the design of circumference cloth hole, 7 little discharge orifices (3-1) of symmetrical arrangement, the size of little discharge orifice (3-1) is decided by the size of the big discharge orifice (3-4) of installing lateral wall single core contact pin one side, the area of the discharge orifice of 7 little discharge orifices (3-1) and big discharge orifice (3-4) keeps unanimous promptly, be provided with the bigger transition hole of discharge orifice (3-3) of discharge orifice between big, little discharge orifice.
2. The adapter sub of a logging-while-drilling instrument as recited in claim 1, wherein: the copper ring (1) is made of beryllium bronze material.
3. The adapter sub of a logging-while-drilling instrument as recited in claim 1, wherein: the end faces of two sides of the copper ring (1) are provided with dismounting grooves (1-1) which are convenient for dismounting and replacing the copper ring (1).
4. The adapter sub of a logging-while-drilling instrument as recited in claim 1, wherein: the sealing joint (4) is made of beryllium bronze material.
5. The adapter sub of a logging-while-drilling instrument as recited in claim 1, wherein: 6 dismounting grooves (4-1) which are uniformly distributed in the circumferential direction are formed in the outer side of the end face of the sealing joint (4), so that a dismounting tool can be conveniently placed, and the sealing joint (4) can be screwed up for mounting or dismounting.
6. The adapter sub of a logging-while-drilling instrument as recited in claim 1, wherein: and a threading hole (3-2) is also arranged for connecting the wires at two sides so as to ensure that the circuit in the matching instrument forms a loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910153627.3A CN109882087B (en) | 2019-02-28 | 2019-02-28 | Switching nipple joint of logging-while-drilling instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910153627.3A CN109882087B (en) | 2019-02-28 | 2019-02-28 | Switching nipple joint of logging-while-drilling instrument |
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| Publication Number | Publication Date |
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| CN109882087A CN109882087A (en) | 2019-06-14 |
| CN109882087B true CN109882087B (en) | 2020-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910153627.3A Active CN109882087B (en) | 2019-02-28 | 2019-02-28 | Switching nipple joint of logging-while-drilling instrument |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113417579A (en) * | 2021-07-22 | 2021-09-21 | 上海勘察设计研究院(集团)有限公司 | Cabled light in-situ test while drilling system opening reducer union |
| CN114293982B (en) * | 2022-03-08 | 2022-05-17 | 智慧猫(东营)智能科技有限公司 | Logging-while-drilling instrument provided with runner conversion connecting piece |
| CN116950577B (en) * | 2023-09-19 | 2023-11-21 | 中海油田服务股份有限公司 | Conversion nipple of logging while drilling instrument |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2441072A1 (en) * | 2001-03-16 | 2002-09-26 | Baker Hughes Incorporated | Flexible joint for well logging instruments |
| CN201173113Y (en) * | 2008-01-18 | 2008-12-31 | 大港油田集团有限责任公司 | MWD system down-hole instrument connecting apparatus |
| CN202483565U (en) * | 2012-03-09 | 2012-10-10 | 北京波特耐尔石油技术有限公司 | Pressurized short section of negative impulse measurement apparatus while drilling |
| CN203685165U (en) * | 2013-12-25 | 2014-07-02 | 中国海洋石油总公司 | While-drilling instrument connector |
| CN105909236A (en) * | 2016-05-16 | 2016-08-31 | 徐秀 | Multi-functional instrument connecting device |
| CN107386981A (en) * | 2017-08-14 | 2017-11-24 | 中国石油大学(北京) | Drill bit pup joint |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2515283A (en) * | 2013-06-17 | 2014-12-24 | Guy Wheater | Mud sensing hole finder (MSHF) |
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2019
- 2019-02-28 CN CN201910153627.3A patent/CN109882087B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2441072A1 (en) * | 2001-03-16 | 2002-09-26 | Baker Hughes Incorporated | Flexible joint for well logging instruments |
| CN201173113Y (en) * | 2008-01-18 | 2008-12-31 | 大港油田集团有限责任公司 | MWD system down-hole instrument connecting apparatus |
| CN202483565U (en) * | 2012-03-09 | 2012-10-10 | 北京波特耐尔石油技术有限公司 | Pressurized short section of negative impulse measurement apparatus while drilling |
| CN203685165U (en) * | 2013-12-25 | 2014-07-02 | 中国海洋石油总公司 | While-drilling instrument connector |
| CN105909236A (en) * | 2016-05-16 | 2016-08-31 | 徐秀 | Multi-functional instrument connecting device |
| CN107386981A (en) * | 2017-08-14 | 2017-11-24 | 中国石油大学(北京) | Drill bit pup joint |
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| CN109882087A (en) | 2019-06-14 |
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