CN114645707B - Pressure sensing device fixed knot constructs - Google Patents
Pressure sensing device fixed knot constructs Download PDFInfo
- Publication number
- CN114645707B CN114645707B CN202210224325.2A CN202210224325A CN114645707B CN 114645707 B CN114645707 B CN 114645707B CN 202210224325 A CN202210224325 A CN 202210224325A CN 114645707 B CN114645707 B CN 114645707B
- Authority
- CN
- China
- Prior art keywords
- pressure sensing
- sensing device
- cover body
- working
- nipple
- 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.)
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Links
- 210000002445 nipple Anatomy 0.000 claims abstract description 42
- 238000005553 drilling Methods 0.000 claims abstract description 38
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 6
- 239000002002 slurry Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
- E21B47/017—Protecting measuring instruments
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
- E21B47/14—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
- E21B47/18—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid, e.g. mud pressure pulse telemetry
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Geophysics (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Remote Sensing (AREA)
- Acoustics & Sound (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention belongs to the technical field of logging while drilling, and discloses a pressure sensing device fixing structure. Comprising the following steps: the underground instrument while drilling comprises at least two working nipple joints which are detachably connected, the connecting body is detachably and electrically connected between the adjacent working nipple joints, a cover body which is detachably connected with the connecting body is formed between the cover body and the connecting body, a gap is formed between the cover body and the connecting body, a pressure sensing device is embedded in the cover body in a sealing manner, the pressure sensing device is electrically connected with the adjacent working nipple joints at the same time, in the process of entering the underground instrument while drilling, mud enters an annular gap between a shell of the underground instrument while drilling and the connecting body through a runner of one working nipple joint of the underground instrument while drilling, and flows to the next working nipple joint after entering the gap, and the pressure sensing device in the cover body judges the circulation condition of the mud according to the detected pressure value. The pressure sensing device fixing structure can timely detect the circulation condition of mud in the instrument under the drilling well, so that the stability of the instrument in operation is improved.
Description
Technical Field
The invention relates to the technical field of logging while drilling, in particular to a pressure sensing device fixing structure.
Background
At present, some instruments (such as a high-speed mud pulser, an underground engineering measuring instrument and the like) under the well drilling have a bad working environment, and mud is easy to block when flowing through the instruments under the well drilling, so that the instruments under the well drilling cannot work normally, and therefore the circulation condition of the mud in the instruments under the well drilling needs to be detected in time so as to ensure the normal work of the instruments under the well drilling.
Disclosure of Invention
In order to timely detect the circulation condition of mud in a downhole instrument while drilling, thereby improving the stability of the instrument in operation, the invention provides a pressure sensing device fixing structure.
The pressure sensing device fixing structure according to the present invention includes: the device comprises a cover body, a pressure sensing device, a connecting body, a casing, a working nipple, a connecting body, a casing and a pressure sensing device, wherein the connecting body is connected in the instrument while drilling, the instrument while drilling comprises at least two working nipples which are detachably connected, the connecting body is detachably and electrically connected between the adjacent working nipples, a gap is formed between the cover body and the connecting body, the pressure sensing device is embedded in the cover body in a sealing manner, the pressure sensing device is simultaneously and electrically connected with the adjacent working nipples, in the process of entering the instrument while drilling, mud enters an annular gap between the casing of the instrument while drilling and the connecting body through a runner of one working nipple of the instrument while drilling, and flows to the next working nipple after entering the gap between the cover body and the connecting body, and the pressure sensing device in the cover body judges the circulation condition of the mud according to the detected pressure value.
Further, the pressure sensing device comprises a pressure sensor and a pressure judging component, wherein the pressure judging component is internally preset with a pressure threshold value, and when the pressure value detected by the pressure sensor is kept unchanged and smaller than the pressure threshold value, the judging component judges that mud blockage occurs in the downhole instrument.
Further, two ends of the connecting body are respectively in threaded sealing connection with the adjacent working pup joint.
Further, the inside at the both ends of the connector is provided with the electric joint that is used for being connected with adjacent work nipple joint electricity respectively, and the intercommunication has the wiring passageway that is used for passing the electric wire of electric connection pressure sensing device and adjacent work nipple joint between two electric joints.
Further, the cover body comprises a plug which is used for being electrically connected with the pressure sensing device, a socket which is used for being matched with the plug is connected to the wiring channel, and the socket is electrically connected with the electric wire.
Further, the cover body further comprises an accommodating space for embedding the pressure sensing device and a plug for plugging the accommodating space to seal and fix the pressure sensing device in the accommodating space.
Further, sealing rings are arranged between the plug and the socket and between the plug and the pressure sensing device.
Further, the cover is mounted on the connector by screws.
Further, a groove is formed on the outer surface of the connecting body, the cover body is detachably arranged in the groove, and gaps are formed between the cover body and the inner wall of the groove.
Further, in the flow direction of the slurry, the first working nipple of the adjacent working nipples is a flow passage converter.
The pressure sensing device fixing structure of the invention can judge the circulation condition of mud in the underground instrument while drilling through the pressure sensing device, thereby improving the stability of the instrument while drilling during operation, saving cost and time, compared with the prior art, the pressure sensing device has the advantages of simple structure and installation, obvious detection result and high universality, is convenient for monitoring the detection process, and meets the monitoring requirement of the internal slurry circulation condition of the instrument when the instrument under the well is operated in the underground and other severe environments.
Drawings
FIG. 1 is a schematic view of a structure of a pressure sensor device according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along the A-A direction of the pressure sensing device attachment structure shown in FIG. 1;
FIG. 3 is a schematic view of a pressure sensing device mounting structure installed in a downhole tool according to an embodiment of the invention, showing the flow direction of mud.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings for a better understanding of the objects, structures and functions of the present invention.
Fig. 1 and 2 illustrate the structure of a pressure sensing apparatus fixing structure 100 according to an embodiment of the present invention. As shown in connection with fig. 3, the pressure sensing device fixing structure 100 includes: the connector 1 connected in the downhole while drilling apparatus comprises at least two working nipple sections which are detachably connected, such as a first working nipple section 201 and a second working nipple section 202 shown in fig. 1, the connector 1 is detachably and electrically connected between the adjacent working nipple sections, a cover body 2 detachably connected with the connector 1, a gap 21 is formed between the cover body 2 and the connector 1, and a pressure sensing device 3 is embedded in the cover body 2 in a sealing manner (shown in fig. 2). The pressure sensing device 3 is electrically connected with the adjacent working nipple at the same time, in the process of the instrument under drilling, as shown in fig. 3, the arrow direction represents the flow direction of the slurry, the slurry enters the annular gap 301 between the casing 300 and the connector 1 of the instrument under drilling through the flow channel of one working nipple of the instrument under drilling, and flows to the next working nipple after entering the gap 21 between the cover body 2 and the connector 1, and the pressure sensing device 3 in the cover body 2 determines the circulation condition of the slurry according to the detected pressure value.
According to the pressure sensing device fixing structure 100 provided by the embodiment of the invention, the pressure sensing device 3 is embedded in the cover body 2 in a sealing manner, the connector 1 with the cover body 2 is connected in the downhole instrument while drilling, when mud flows through the gap 21 between the cover body 2 and the connector 1, the mud can transmit the pressure of the mud to the pressure sensing device 3 in the connector through the cover body 2, at the moment, the pressure sensing device 3 can judge the circulation condition of the mud in the downhole instrument while drilling according to the pressure value detected by the pressure sensing device 3 in real time, and when the pressure value detected by the pressure sensing device 3 is abnormal compared with the pressure threshold value born by the pressure sensing device 3 when the mud normally flows, the mud is blocked in the downhole instrument while drilling, and at the moment, the blocking clearing work can be timely performed to ensure the normal work of the downhole instrument while drilling.
Specifically, the pressure sensing device 3 may include a pressure sensor and a pressure determining component (not shown in the figures), wherein the determining component is preset with a pressure threshold value, and when the pressure value detected by the pressure sensor remains unchanged and is smaller than the pressure threshold value, the determining component determines that mud blocking occurs along with the interior of the downhole instrument.
The downhole instrument while drilling may be embodied as a high-speed mud pulser or a downhole engineering survey meter.
Taking fig. 3 as an example, when the downhole instrument while drilling is a high-speed mud pulser, the first working nipple 201 may be a flow channel converter, and the second working nipple 202 may be a pulser; when the downhole tool while drilling is a downhole engineering survey meter, the first working nipple 201 may be a flow channel transducer and the second working nipple 202 may be a turbine generator or a probe.
In both embodiments, the first working nipple 201 of the adjacent working nipples in the downhole tool is a flow passage converter in the flow direction of the mud, that is, the pressure sensing device securing structure 100 of the present embodiment may be commonly connected between the flow passage converter and the working nipple adjacent thereto. Of course, the installation position of the fixing structure 100 of the pressure sensing device according to the embodiment of the present invention is not limited thereto, and the fixing structure may be installed between any adjacent working sub which is easy to be blocked in the downhole instrument while drilling, and the number of the fixing structures may be specifically selected according to actual needs, which is not specifically limited herein.
According to the present invention, as shown in fig. 1 and 2, both ends of the connection body 1 may be respectively formed with threads for respectively screw-coupling with the adjacent working nipple. Because at least two adjacent working nipple joints in the existing downhole while-drilling instrument are connected in a threaded connection mode, the connecting body 1 can be quickly disassembled and assembled with the adjacent working nipple joints on the basis of not changing the structure of the existing working nipple joints.
In the preferred embodiment shown in fig. 2, the inside of both ends of the connector 1 may be provided with electrical connectors 12 for electrically connecting with adjacent working nipple, respectively, and a routing channel 13 for passing through an electric wire (not shown in the figure) electrically connecting the pressure sensing device 3 with the adjacent working nipple is connected between the two electrical connectors 12. This arrangement is used to make electrical connection between the pressure sensing device 3 and the various working subs of the downhole instrument while drilling.
According to the present invention, as shown in fig. 1, it is preferable that the cover 2 is mounted on the connection body 1 by a screw 4.
It is also preferable that a groove is formed on the outer surface of the connector 1, the cover 2 is detachably mounted in the groove, and a gap 21 is formed between the cover 2 and the inner wall of the groove. This arrangement enables the cover 2 to be accommodated in the recess, whereby the protruding height of the cover 2 relative to the outer surface of the connector 1 can be reduced, contributing to the protection of the cover 2 and the pressure sensing means 3 therein.
In a preferred embodiment as shown in fig. 2, the cover 2 may comprise a plug 31 for electrical connection with the pressure sensing device 3, and a socket 32 for mating with the plug 31 is connected to the routing channel 13, the socket 32 being electrically connected with the electrical wire. The cooperation of plug 31 and socket 32 can realize the quick convenient electricity between pressure sensing device 3 and the adjacent work nipple joint and be connected, also can make things convenient for lid 3 and connector 1's detachable simultaneously.
Further, the cover 2 further comprises a receiving space for embedding the pressure sensing device 3 and a plug 33 for plugging the receiving space to seal and fix the pressure sensing device 3 in the receiving space. The arrangement of the plug 33 on the one hand makes it possible to fix the pressure sensor 3 in the receiving space and at the same time to avoid influencing the service life of the pressure sensor 3 as a result of mud entering the receiving space.
In a preferred embodiment, sealing rings (not shown) may be provided between the plug 31 and the socket 32, and between the plug 33 and the pressure sensing device 3, to further enhance the operational safety and effectiveness of the pressure sensing device securing structure 100.
In summary, in the pressure sensing device fixing structure 100 of the embodiment of the present invention, the pressure sensing device 3 is integrated in the cover 2 in an embedded manner, so that installation space for the pressure sensing device 3 can be saved, and the pressure sensing device is convenient to detach, and meanwhile, the test process and result can be monitored conveniently; the cover body 2 and the connector 1 are detachably connected to form an independent short joint and are connected in the downhole instrument while drilling, the pressure sensing device 3 and the downhole instrument while drilling are electrically connected through the cooperation of the plug 31 and the socket 32, and the cooperation mode provides convenience for the detachable connection and the electrical connection of the cover body 2 and the connector 1; the connecting body 1 is in threaded sealing connection with the adjacent working pup joint in the downhole instrument while drilling, the fixing mode is reliable and simple to install and convenient to detach, the universality of the structure can be improved, and the time for assembly maintenance is saved.
It is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs.
In the description of the present application, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention, and are intended to be included within the scope of the appended claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (6)
1. A pressure sensing device fixing structure, characterized by comprising: the device comprises a cover body, a pressure sensing device and a casing, wherein the cover body is connected with the cover body, the cover body is connected with the casing, the pressure sensing device is connected with the casing, the casing is provided with a plurality of working nipple joints, the casing is provided with a plurality of pressure sensing devices, the pressure sensing devices are simultaneously and electrically connected with the adjacent working nipple joints, in the process of the down-hole instrument, mud enters an annular gap between the casing of the down-hole instrument and the connecting body through a runner of one working nipple joint of the down-hole instrument, enters the gap between the cover body and the connecting body and then flows to the next working nipple joint, and the pressure sensing devices in the cover body judge the circulation condition of the mud according to the detected pressure value; wherein, two ends of the connector are respectively in threaded sealing connection with the adjacent working pup joint; an electric connector for electrically connecting with the adjacent working nipple is respectively arranged in the two ends of the connecting body, and a wiring channel for passing through an electric wire for electrically connecting the pressure sensing device with the adjacent working nipple is communicated between the two electric connectors; the cover body comprises a plug which is used for being electrically connected with the pressure sensing device, a socket which is used for being matched with the plug is connected to the wiring channel, and the socket is electrically connected with the electric wire; the cover body further comprises an accommodating space used for being embedded into the pressure sensing device and a plug used for plugging the accommodating space so as to fix the pressure sensing device in the accommodating space in a sealing mode.
2. The pressure sensing device fixation structure according to claim 1, wherein the pressure sensing device comprises a pressure sensor and a pressure determination means, wherein a pressure threshold is preset in the determination means, and the determination means determines that mud plugging occurs inside the downhole while drilling instrument when the pressure value detected by the pressure sensor remains unchanged and is smaller than the pressure threshold.
3. The pressure sensing device fixation structure of claim 1, wherein a sealing ring is disposed between the plug and the socket, and between the plug and the pressure sensing device.
4. The pressure sensing apparatus fixing structure according to claim 1 or 2, wherein the cover is mounted on the connection body by a screw.
5. The structure according to claim 4, wherein a groove is formed on an outer surface of the connection body, the cover body is detachably mounted in the groove, and a gap is formed between the cover body and an inner wall of the groove.
6. A pressure sensing device attachment arrangement according to claim 1 or claim 2, wherein a first of the adjacent working subs is a flow passage switch in the direction of flow of the slurry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210224325.2A CN114645707B (en) | 2022-03-07 | 2022-03-07 | Pressure sensing device fixed knot constructs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210224325.2A CN114645707B (en) | 2022-03-07 | 2022-03-07 | Pressure sensing device fixed knot constructs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114645707A CN114645707A (en) | 2022-06-21 |
| CN114645707B true CN114645707B (en) | 2024-08-16 |
Family
ID=81994010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210224325.2A Active CN114645707B (en) | 2022-03-07 | 2022-03-07 | Pressure sensing device fixed knot constructs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114645707B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2043695A1 (en) * | 1990-06-01 | 1991-12-02 | Volker Krueger | Drilling tool for sinking wells in underground rock formations |
| CN105804719A (en) * | 2016-04-07 | 2016-07-27 | 中国海洋石油总公司 | Internal wiring structure of pup joint of well logging instrument during drilling |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6016288A (en) * | 1994-12-05 | 2000-01-18 | Thomas Tools, Inc. | Servo-driven mud pulser |
| CN201857949U (en) * | 2010-11-04 | 2011-06-08 | 东北石油大学 | Vibration failure early-warning device of drill column |
| CN202202865U (en) * | 2011-09-08 | 2012-04-25 | 中国石油天然气集团公司 | Shell structure for installing near-bit well deflection measuring pup joint of vertical well drilling tool |
| CN205260024U (en) * | 2015-12-29 | 2016-05-25 | 杭州丰禾石油科技有限公司 | A hole diameter nipple joint for ultrasonic wave is followed and is bored caliper survey |
| CN106246169B (en) * | 2016-08-31 | 2017-09-01 | 中国科学院地质与地球物理研究所 | A kind of mechanical device suitable for the wireless short pass transmitting of the nearly drill bit in underground |
| CN109025974B (en) * | 2018-09-18 | 2024-02-02 | 中国石油天然气集团有限公司 | Long duration mud pulse while drilling bottom pressure monitoring device |
| CN109882086B (en) * | 2019-02-28 | 2020-07-21 | 中国石油天然气集团有限公司 | Switching nipple joint of measurement-while-drilling instrument for petroleum drilling |
-
2022
- 2022-03-07 CN CN202210224325.2A patent/CN114645707B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2043695A1 (en) * | 1990-06-01 | 1991-12-02 | Volker Krueger | Drilling tool for sinking wells in underground rock formations |
| CN105804719A (en) * | 2016-04-07 | 2016-07-27 | 中国海洋石油总公司 | Internal wiring structure of pup joint of well logging instrument during drilling |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114645707A (en) | 2022-06-21 |
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