CN116337685A - Mud density measuring device with cleaning function for petroleum logging - Google Patents
Mud density measuring device with cleaning function for petroleum logging Download PDFInfo
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- CN116337685A CN116337685A CN202310613070.3A CN202310613070A CN116337685A CN 116337685 A CN116337685 A CN 116337685A CN 202310613070 A CN202310613070 A CN 202310613070A CN 116337685 A CN116337685 A CN 116337685A
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/26—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring pressure differences
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention relates to the technical field of oil field logging, in particular to a mud density measuring device with a cleaning function for oil logging. The utility model provides a mud density measuring device with clearance function for oil logging, including the pipeline, the pipeline rigid coupling has the fixing base, the fixing base has the detection casing through bolt mounting, it has electric putter to detect the casing rigid coupling, electric putter's flexible end rigid coupling has the connecting rod, the connecting rod rigid coupling has the inserted bar with detecting casing sliding connection, detect the casing sliding connection have with the first ejector pad of inserted bar rigid coupling, one side that the fixing base was kept away from to the detection casing is provided with the through-hole, first ejector pad is provided with the second ejector pad with detecting casing sliding connection, the second ejector pad rigid coupling has the dead lever. According to the invention, the density of the mud in the pipeline in a static state is measured periodically, so that the true density of the mud (the density of the mud is influenced by the flow rate) is reflected more accurately, and the accuracy of regulating and controlling the density of the drilling mud by an operator is improved.
Description
Technical Field
The invention relates to the technical field of oil field logging, in particular to a mud density measuring device with a cleaning function for oil logging.
Background
The logging is a process of analyzing parameters such as solid, liquid, gas and the like in the drilling process by adopting a physicochemical method, and accurate evaluation of an oil-gas-water layer is realized through logging parameters, wherein the logging has important significance on the density requirement of slurry in the drilling process, and ensures a rapid and safe drilling process, wherein the equipment for detecting the slurry is a density sensor, and the density of the slurry is detected mainly by utilizing the pressure difference generated by a diaphragm.
When the density of the slurry is affected by the flow speed, the detected value deviates from the actual value when the density of the flowing slurry is directly detected, the environment in the oil well slurry pipeline is complex, the diaphragm on the density sensor is easily damaged due to long-time detection, the detected value deviates greatly, when the diaphragm needs to be replaced regularly, if the diaphragm is replaced in the path process, the slurry pipeline needs to be closed, and the logging process is affected.
Disclosure of Invention
In order to solve the problems mentioned in the background art, the invention provides a mud density measuring device with a cleaning function for static detection type petroleum logging.
The technical scheme of the invention is as follows: the utility model provides a mud density measuring device with clearance function for oil logging, including the pipeline, the pipeline rigid coupling has the fixing base, the fixing base passes through the bolt mounting and detects the casing rigid coupling and has electric putter, electric putter's flexible end rigid coupling has the connecting rod, the connecting rod rigid coupling has the inserted bar with detecting casing sliding connection, detect the casing sliding connection have with the first ejector pad of inserted bar rigid coupling, detect the one side that the fixing base was kept away from to the casing is provided with the through-hole, first ejector pad is provided with the second ejector pad with detecting casing sliding connection, the second ejector pad rigid coupling has the dead lever, the dead lever is provided with first density sensor and first flow rate sensor, be provided with the connecting wire in inserted bar, first ejector pad, second ejector pad and the dead lever, detect the casing and be provided with control terminal, electric putter is connected with control terminal, the connecting wire is with first density sensor and first flow rate sensor and control terminal electricity, the fixing mechanism of protection dead lever is provided with static detection mechanism to detect the casing and is used for detecting the density of mud under the static condition, first density sensor and first flow rate sensor measure the mud in the pipeline respectively.
Preferably, the fixing mechanism comprises a fixing sleeve, the fixing seat is provided with a groove, the fixing sleeve is slidably connected to the fixing seat, one side of the fixing sleeve, which is close to the fixing seat, is matched with the groove, the fixing rod is slidably connected with the fixing sleeve, the fixing sleeve is provided with a rectangular groove matched with the first density sensor and the first flow sensor, the fixing seat is provided with a sealing ring positioned in the groove, the fixing seat is in threaded fit with a threaded sleeve positioned in the groove, the threaded sleeve is rotationally connected with the fixing sleeve, a sealing component for sealing the rectangular groove is arranged in the fixing sleeve, and a supporting component is arranged on the fixing sleeve and is used for supporting the fixing sleeve.
Preferably, the sealing assembly comprises a sealing column which is connected in the fixed sleeve in a sliding way, the sealing column is matched with the rectangular groove, and a spring is fixedly connected between the sealing column and the fixed sleeve.
Preferably, the support assembly comprises a first rotating rod, the first rotating rod is rotationally connected to one end, far away from the fixed seat, of the fixed sleeve, the first rotating rod is fixedly connected with a symmetrically distributed support plate, and a torsion spring is fixedly connected between the first rotating rod and the fixed sleeve.
Preferably, the support plate is shaped as a trapezoid for reducing the resistance of the support plate to mud.
Preferably, the static detection mechanism comprises symmetrically distributed L-shaped pipes, the symmetrically distributed L-shaped pipes are fixedly connected to the detection shell, the symmetrically distributed L-shaped pipes are communicated with the detection shell, the pipeline is provided with symmetrically distributed connecting pipes, the symmetrically distributed connecting pipes are respectively matched with adjacent L-shaped pipe bolts, one-way valves are arranged in the L-shaped pipes, a second density sensor and a second flow rate sensor which are electrically connected with the control terminal are arranged in the L-shaped pipes close to one side of the control terminal, and the fixing base is provided with a locking part for fixing the second push block.
Preferably, the diameter of the upper part of the first push block is larger than that of the lower part, and the communication part of the detection shell and the L-shaped pipe is lower than the upper surface of the first push block.
Preferably, the locking part is including the carousel, the fixing base is provided with the ring channel, the carousel rotates to be connected in the ring channel, the fixing base is provided with symmetrical distribution's arc wall, symmetrical distribution's arc wall and ring channel intercommunication, be provided with symmetrical distribution's bar piece in the detection casing, first ejector pad setting and adjacent bar piece sliding connection's first draw-in groove, the second ejector pad is provided with adjacent bar piece complex second draw-in groove, the fixing base is provided with symmetrical distribution's first stopper, first stopper and adjacent second draw-in groove cooperation, the carousel is provided with symmetrical distribution's second stopper, second stopper and adjacent arc wall sliding connection, second stopper and adjacent second draw-in groove cooperation, first ejector pad rigid coupling has symmetrical distribution's L shape piece, the second ejector pad is provided with adjacent L shape piece complex L shape groove, the pipeline is provided with the shutoff subassembly that is used for sealing connection pipe.
Preferably, the length of the arc-shaped groove is greater than the length of the second limiting block.
Preferably, the plugging assembly comprises second rotating rods which are symmetrically distributed, the second rotating rods which are symmetrically distributed are rotationally connected to the pipeline, the second rotating rods are rotationally connected with adjacent connecting pipes, the second rotating rods are fixedly connected with belts Kong Qiuti matched with the adjacent connecting pipes, the second rotating rods are fixedly connected with first bevel gears, and the turntable is fixedly connected with second bevel gears meshed with the first bevel gears which are symmetrically distributed.
The beneficial effects of the invention are as follows:
1. by periodically measuring the density of the mud in the pipeline at a static state, the real density of the mud (the mud density is influenced by the flow rate) is reflected more accurately, the accuracy of the density of the drilling mud regulated and controlled by an operator is improved, and the well logging process is assisted to be carried out smoothly.
2. Before the diaphragms of the first density sensor and the second density sensor are replaced, the rectangular groove is plugged by the connecting pipe and the sealing column of the strap Kong Qiuti, so that slurry leakage in the pipeline is avoided, and an operator is assisted in replacing the diaphragms of the first density sensor and the second density sensor.
3. The fixing sleeve is fixed in the pipeline through the supporting plate, so that the impact force of slurry borne by the fixing rod in the subsequent fixing sleeve is reduced, meanwhile, the vibration of the slurry borne by the fixing rod is reduced (the sensitivity of an electrical element in the first density sensor is reduced after the electrical element is vibrated for a long time), and the accuracy of the measured slurry density is improved.
4. And recording the actual relation between the density and the speed of the slurry when the density of the slurry is measured each time, so that the density of the slurry is regulated and controlled to realize accurate monitoring of the density of the slurry.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic perspective view of the support plate and the detecting housing.
Fig. 3 is a schematic perspective view of a seal assembly according to the present invention.
Fig. 4 is a schematic perspective view of the fixing mechanism of the present invention.
Fig. 5 is a schematic perspective view of the fixing sleeve, the sealing ring and other parts according to the present invention.
Fig. 6 is a schematic perspective view of a support assembly according to the present invention.
Fig. 7 is a schematic perspective view of the support plate and the fixing sleeve according to the present invention.
Fig. 8 is a schematic perspective view of a static detection mechanism according to the present invention.
Fig. 9 is a schematic perspective view of a closure assembly according to the present invention.
Fig. 10 is a schematic perspective view of a locking member of the present invention.
FIG. 11 is a schematic perspective view of the L-shaped block and L-shaped groove of the present invention.
Reference numerals in the figures: 1-pipe, 2-fixed seat, 201-groove, 202-annular groove, 203-arc groove, 204-first stopper, 3-detection housing, 301-bar block, 4-electric push rod, 5-connecting rod, 6-plug rod, 7-first plug, 701-first card slot, 8-second plug, 801-second card slot, 802-L-groove, 9-fixed rod, 901-connecting wire, 902-control terminal, 1001-first density sensor, 1002-first flow rate sensor, 1101-fixed sleeve, 11011-rectangular groove, 1102-sealing ring, 1103-threaded sleeve, 1201-sealing post, 1202-spring, 1301-first rotating rod, 1302-supporting plate, 1303-torsion spring, 1401-L-tube, 1402-connecting tube, 1403-check valve, 1404-second density sensor, 1405-second flow rate sensor, 1406-rotating disc, 14061-second stopper, 1407-L-shaped block, 1501-second rotating rod, 1502-belt Kong Qiuti, 1503-first bevel gear, 1504-second bevel gear.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
1-4, including pipeline 1, the upper portion rigid coupling of pipeline 1 has fixing base 2, fixing base 2 communicates with pipeline 1, the upside of fixing base 2 installs detection housing 3 through the bolt, the right flank rigid coupling of detection housing 3 has electric putter 4, the flexible end rigid coupling of electric putter 4 has connecting rod 5, the left end rigid coupling of connecting rod 5 has the inserted bar 6 with detection housing 3 sliding connection, the detection housing 3 sliding connection has the first ejector pad 7 with inserted bar 6 lower extreme rigid coupling, the upside of detection housing 3 is provided with the through-hole, when first ejector pad 7 moves down, external gas gets into it through the through-hole of detection housing 3, the downside of first ejector pad 7 is provided with the second ejector pad 8 with detection housing 3 sliding connection, the lower surface rigid coupling of second ejector pad 8 has dead lever 9, the right side of dead lever 9 is provided with first density sensor 1001 and first flow rate sensor 1002, inserted bar 6, first ejector pad 7, second ejector pad 8 and dead link wire 901 and dead lever 901 are provided with first flow rate sensor 1001 and 902, the fixed connection is provided with the fixed connection, the first end of detection housing 1 is connected with the fixed terminal 902, the numerical value of pipeline 1 is connected with the fixed terminal 902, the fixed connection is arranged to the fixed terminal 902 of the fixed connection, the fixed terminal 902 of the pipeline 1 is connected with the fixed terminal 902, the fixed terminal of the electric control mechanism is arranged on the end of the fixed terminal 902, the fixed terminal 902 is connected with the fixed terminal 902 of the pipeline 1, the fixed terminal 902 is connected with the end of the fixed terminal of the electric controller is arranged with the end of the fixed terminal 902, the terminal 902 is connected with the end of the fixed with the end of the pipeline 1, the detection housing 3 is used for detecting the density of the slurry under the static condition, and avoiding the flow rate from affecting the measured value of the density of the slurry, and the first density sensor 1001 and the first flow rate sensor 1002 respectively measure the density and the flow rate of the slurry in the detection pipeline 1.
As shown in fig. 2-5, the fixing mechanism comprises a fixing sleeve 1101, a groove 201 is arranged at the upper part of a fixing seat 2, the fixing sleeve 1101 is slidably connected to the fixing seat 2, a spline groove is arranged at the left side surface of the fixing sleeve 1101, the fixing sleeve 1101 cannot rotate in a sliding manner in the fixing seat 2, the upper diameter of the fixing sleeve 1101 is equal to the diameter of the groove 201, a fixing rod 9 is slidably connected with the fixing sleeve 1101, the fixing rod 9 is positioned in the fixing sleeve 1101, the fixing sleeve 1101 is provided with a rectangular groove 11011 matched with a first density sensor 1001 and a first flow rate sensor 1002, mud is in contact with the first density sensor 1001 and the first flow rate sensor 1002 through the rectangular groove 11011, a sealing ring 1102 is arranged in the groove 201, the sealing ring 1102 is used for improving tightness between the fixing sleeve 1101 and the fixing seat 2, threads are arranged on the fixing seat 2, a threaded sleeve 1103 is arranged in the groove 201 in a threaded manner, the threaded sleeve 1103 is rotatably connected with the fixing sleeve 1101, the threaded sleeve 1103 is rotationally drives the fixing sleeve 1101 to move, a sealing component used for sealing the rectangular groove 11011 is arranged in the fixing sleeve 1101, a supporting component is arranged in the fixing sleeve 1101, and a supporting component is used for supporting the fixing sleeve 1101.
As shown in fig. 3, the sealing assembly comprises a sealing post 1201, the sealing post 1201 is slidably connected in the fixed sleeve 1101, the sealing post 1201 is matched with the rectangular groove 11011, the length of the sealing post 1201 is longer than that of the rectangular groove 11011, the sealing post 1201 seals the rectangular groove 11011, and a spring 1202 is fixedly connected between the sealing post 1201 and the fixed sleeve 1101.
As shown in fig. 2, fig. 3, fig. 6 and fig. 7, the support assembly comprises a first rotating rod 1301, the first rotating rod 1301 is rotationally connected to the lower end of a fixed sleeve 1101, two support plates 1302 symmetrically distributed around the first rotating rod 1301 are fixedly connected, the front-back distance of the outer side surface of the lower portion of the fixed sleeve 1101 is smaller than the diameter of the upper portion of the fixed sleeve 1101, the distance between the two support plates 1302 is smaller than the diameter of the upper portion of the fixed sleeve 1101, the shape of the support plates 1302 is trapezoid for reducing the resistance of the support plates 1302 to mud, the mud impacts the support plates 1302 from right to left, the right side surface of the support plates 1302 is an inclined surface for guiding the mud, the impact force of the mud is reduced, a torsion spring 1303 is fixedly connected between the first rotating rod 1301 and the fixed sleeve 1101, and in an initial state (when the torsion spring 1303 does not store the force), the states of the support plates 1302 and the fixed sleeve 1101 are shown in fig. 7.
As shown in fig. 1, 8 and 9, the static detection mechanism comprises two L-shaped pipes 1401 which are distributed symmetrically left and right, the two L-shaped pipes 1401 are fixedly connected to the detection housing 3, the symmetrically distributed L-shaped pipes 1401 are communicated with the lower portion of the detection housing 3, the diameter of the upper portion of the first push block 7 is larger than that of the lower portion, the communicating portion of the detection housing 3 and the L-shaped pipes 1401 is lower than the upper surface of the first push block 7, an annular cavity is formed by the lower portion of the outer side face of the first push block 7 and the detection housing 3, when the first push block 7 moves upwards, the pressure in the annular cavity is reduced, the upper portion of the pipeline 1 is provided with two connecting pipes 1402 which are distributed symmetrically left and right, the two connecting pipes 1402 are respectively matched with adjacent L-shaped pipes 1401 in a bolt mode, a one-way valve 1403 is arranged in the L-shaped pipe 1401, a second density sensor 1404 and a second flow rate sensor 1405 which are electrically connected with the control terminal 902 are arranged in the L-shaped pipe 1401 on the left side, the second density sensor 1405 is positioned on the right side of the left side of the one-way valve 1403, and the second density sensor is used for measuring the density of the slurry in the fixed seat 2 by detecting the L-shaped pipe 3.
As shown in fig. 8-11, the locking component comprises a turntable 1406, an annular groove 202 is arranged at the outer side of the upper part of the fixed seat 2, the turntable 1406 is rotationally connected with the annular groove 202, the fixed seat 2 is provided with two arc-shaped grooves 203 which are symmetrically distributed, the arc-shaped grooves 203 are positioned at the inner side of the annular groove 202, the two arc-shaped grooves 203 are communicated with the annular groove 202, two strip-shaped blocks 301 which are symmetrically distributed are arranged in the detection shell 3, a first push block 7 is provided with a first clamping groove 701 which is in sliding connection with the adjacent strip-shaped block 301, a second push block 8 is provided with a second clamping groove 801 which is matched with the adjacent strip-shaped block 301, two first limiting blocks 204 which are symmetrically distributed are arranged at the inner side surface of the upper part of the fixed seat 2, the first limiting blocks 204 are positioned at the upper sides of the annular groove 202 and the arc-shaped grooves 203, the first limiting blocks 204 are matched with the adjacent second clamping grooves 801, when the second push block 8 is positioned at the lower side of the first limiting block 204 and the second clamping groove 801 is not aligned with the first limiting block 204, the second push block 8 is limited by the first limiting block 204 and cannot move upwards, the inner side surface of the turntable 1406 is provided with second limiting blocks 14061 which are symmetrically distributed, the second limiting blocks 14061 are in sliding connection with the adjacent arc-shaped grooves 203, the length of the arc-shaped grooves 203 is larger than that of the second limiting blocks 14061, the turntable 1406 drives the second limiting blocks 14061 to slide in the adjacent arc-shaped grooves 203, the second limiting blocks 14061 are matched with the adjacent second clamping grooves 801, the second limiting blocks 14061 are positioned under the adjacent first limiting blocks 204, the lower surface of the first push block 7 is fixedly connected with two L-shaped blocks 1407 which are symmetrically distributed, the second push block 8 is provided with L-shaped grooves 802 matched with the adjacent L-shaped blocks 1407, and the pipeline 1 is provided with a plugging assembly for sealing the connecting pipe 1402.
As shown in fig. 8 and 9, the plugging assembly comprises two second rotating rods 1501 distributed symmetrically left and right, the two second rotating rods 1501 are both rotationally connected to the upper portion of the pipeline 1, the second rotating rods 1501 are rotationally connected with the adjacent connecting pipes 1402, the second rotating rods 1501 are fixedly connected with belts Kong Qiuti matched with the adjacent connecting pipes 1402, the belts Kong Qiuti are used for communicating the connecting pipes 1402, one ends of the second rotating rods 1501 away from the belts Kong Qiuti are fixedly connected with first bevel gears 1503, and the lower side surfaces of the rotating discs 1406 are fixedly connected with second bevel gears 1504 meshed with the first bevel gears 1503 distributed symmetrically.
When the device is required to measure the mud density in the wellhead pipeline 1, an operator performs the following operation, wherein the illustrated state is a state after the fixing rod 9 is placed (when the fixing rod 9 is positioned in the fixing sleeve 1101), the second limiting block 14061 is aligned up and down with the adjacent first limiting block 204, the following operation is continued in the illustrated state, and the locking process (locking the second pushing block 8) ensures that the fixing rod 9 does not move up and down in the measuring process, and the specific operation is as follows: as shown in fig. 9, an operator rotates the turntable 1406 clockwise (the second limiting block 14061 is clamped into the adjacent second clamping groove 801), the turntable 1406 drives the second limiting block 14061 to rotate clockwise along the arc-shaped groove 203, the second limiting block 14061 drives the second pushing block 8 to rotate clockwise, the second pushing block 8 rotates clockwise to gradually release the limitation of the two L-shaped blocks 1407, after the second pushing block 8 rotates clockwise by a certain angle, the limitation of the L-shaped blocks 1407 is released, the operator stops rotating the turntable 1406, as shown in fig. 4, the second clamping groove 801 is positioned under the first limiting block 204 and is blocked by the first limiting block 204, the second clamping groove 801 is gradually dislocated with the first limiting block 204 in the clockwise rotation process of the second pushing block 8, after the second pushing block 8 stops rotating, the second clamping groove 801 is not aligned with the first limiting block 204 any more, the first limiting block 204 limits the second pushing block 8, the second pushing block 8 cannot move upwards, and the locking process of the second pushing block 8 is completed.
During the clockwise rotation of the turntable 1406, the turntable 1406 drives the second bevel gear 1504 to rotate clockwise, the second bevel gear 1504 drives the two first bevel gears 1503 to rotate, the first bevel gears 1503 drive the belt Kong Qiuti 1502 to rotate through the second rotating rod 1501, and when an operator stops rotating the turntable 1406, the belt Kong Qiuti 1502 rotates 90 degrees and the perforated ball no longer seals the connecting pipe 1402.
The mud flows from right to left in pipeline 1, and first density sensor 1001 measures the density of the mud in pipeline 1 constantly and sends this numerical value to control terminal 902, and operating personnel knows the density of the mud in pipeline 1 through observing this numerical value to regulate and control the density of drilling mud, but mud density receives the velocity of flow influence, can appear the error when carrying out density measurement to the mud that flows, consequently, when carrying out real-time online dynamic measurement to the mud, need carry out static measurement to the mud, improves the accuracy of measuring mud density.
When the static measurement of the slurry density in the pipeline 1 is required, the control terminal 902 starts the electric push rod 4, the electric push rod 4 drives the inserting rod 6 to move upwards through the connecting rod 5, the inserting rod 6 drives the first push block 7 to move upwards, the first clamping groove 701 is in limit fit with the bar block 301, the first push block 7 slides upwards along the bar block 301, the first push block 7 drives the two L-shaped blocks 1407 to move upwards (the L-shaped blocks 1407 are not limited by the L-shaped grooves 802 any more), because the diameter of the lower part of the first push block 7 is smaller than the diameter of the top part, and the second push block 8 is limited by the first limiting block 204 and cannot move upwards, so when the first push block 7 moves upwards, the gas pressure of the annular cavity of the outer side surface of the first push block 7 and the inner wall of the detection shell 3 is reduced, at the moment, the left one-way valve 1403 is closed, the right one-way valve 1403 is opened, the first push block 7 moves upwards to suck the mud in the pipeline 1 into the detection housing 3 between the first push block 7 and the second push block 8 through the right connecting pipe 1402 and the L-shaped pipe 1401, when the first push block 7 is positioned at the upper part in the detection housing 3, the control terminal 902 stops the electric push rod 4, the first push block 7 does not move upwards any more, no mud enters the detection housing 3, the detection housing 3 is filled with mud (mud is positioned between the first push block 7 and the second push block 8), the mud in the detection housing 3 is gradually stationary, then the second density sensor 1404 measures the density of the mud in the left L-shaped pipe 1401 (the left L-shaped pipe 1401 is communicated with the detection housing 3), the second density sensor 1404 sends the measured value to the control terminal 902, the control terminal 902 records and feeds back the value to the operator, the operator adjusts the density of the drilling mud by displaying the mud density, ensuring that the density of the drilling mud is at an optimum value.
After the recording of the mud density is completed, the control terminal 902 starts the electric push rod 4, the first push block 7 moves downwards to squeeze the mud in the detection shell 3, the mud pressure in the detection shell 3 is increased, the left one-way valve 1403 is opened, the right one-way valve 1403 is closed, the mud in the detection shell 3 is injected into the pipeline 1 again through the left L-shaped pipe 1401 and the connecting pipe 1402, the mud on the inner wall of the detection shell 3 is scraped by the first push block 7 in the process of moving downwards, the mud in the detection shell 3 is cleaned, the mud is prevented from adhering to the inner wall of the detection shell 3, the density of the mud is measured periodically, the real density of the mud (the density of the mud is influenced by the flow velocity) is reflected more accurately, the accuracy of the density of drilling mud is improved, and the well logging process is assisted to be smoothly carried out.
Since the measured value of the density sensor is obtained by the pressure difference generated by the direct contact of the diaphragm with the liquid, the measured value is deviated due to the damage of the diaphragm on the density sensor during long-term operation, and the diaphragm of the density sensor needs to be replaced (the fixing rod 9 is taken out from the fixing sleeve 1101), the following specific operations are as follows: firstly, the lower side surface of the first push block 7 is contacted with the upper side surface of the second push block 8, the L-shaped block 1407 is inserted into the adjacent L-shaped groove 802, but the L-shaped block 1407 is not limited to the second push block 8, then, an operator rotates the rotary table 1406 anticlockwise, the L-shaped block 1407 gradually clamps into the adjacent L-shaped groove 802, the rotary table 1406 drives the second push block 8 to rotate anticlockwise through the second limiting block 14061 and the second clamping groove 801, the limit by the first limiting block 204 is gradually released by the anticlockwise rotation of the second push block 8, and after the rotary table 1406 rotates anticlockwise by a certain angle, the state of the L-shaped block 1407 and the second push block 8 is as shown in fig. 11, the second clamping groove 801 is aligned with the first limiting block 204, and the operator does not rotate the rotary table 1406 any more.
In the process of anticlockwise rotation of the turntable 1406, two perforated spheres 1502 rotate to seal the adjacent connecting pipes 1402, mud in the pipeline 1 cannot enter the left connecting pipe 1402, then the control terminal 902 starts the electric push rod 4, the first push block 7 drives the second push block 8 to move upwards through the L-shaped block 1407, the second clamping groove 801 of the second push block 8 slides with the first limiting block 204 in a limiting manner and then slides with the strip-shaped block 301 in a limiting manner, the second push block 8 drives the fixing rod 9 to move upwards, the fixing rod 9 drives the connecting wire 901, the first density sensor 1001 and the first flow rate sensor 1002 to move upwards, when the fixing rod 9 moves upwards, the limit of the sealing column 1201 is released, the spring 1202 in a compressed state resets to drive the sealing column 1201 to move upwards, the upper surface of the sealing column 1201 is closely adhered to the lower surface of the fixing rod 9 and moves upwards synchronously, after the sealing column 1201 moves upwards a certain distance, the sealing post 1201 gradually seals the rectangular groove 11011 to avoid slurry leakage caused by slurry in the pipeline 1 entering the fixed sleeve 1101 through the rectangular groove 11011, after the sealing post 1201 seals the rectangular groove 11011, the control terminal 902 stops the electric push rod 4, the fixed rod 9 does not move upwards any more, then, after the operator removes bolts between the fixed seat 2 and the detection housing 3, bolts between the L-shaped pipe 1401 and the adjacent connecting pipe 1402, all bolts are removed, the operator pulls the detection housing 3 upwards, the detection housing 3 drives the L-shaped pipe 1401 and parts therein to move upwards, the fixing rod 9 gradually moves out of the fixed sleeve 1101, the operator replaces the diaphragms on the first density sensor 1001 and the second density sensor 1404, the belt Kong Qiuti, the connecting pipe 1402, the connecting pipe 1502 and the like before replacing the diaphragms of the first density sensor 1001 and the second density sensor 1404, the sealing post 1201 seals the rectangular slot 11011 from leakage of mud within the pipe 1, assisting the operator in replacing the diaphragms of the first density sensor 1001 and the second density sensor 1404.
After the membrane replacement is completed, the operator places the fixing rod 9, and the specific operation is as follows: the operator inserts the fixing rod 9 into the fixing sleeve 1101 and contacts the lower surface of the detecting housing 3 with the upper surface of the fixing base 2, at this time, the lower surface of the fixing rod 9 contacts with the upper surface of the sealing post 1201, then aligns and communicates the L-shaped pipe 1401 with the adjacent connecting pipe 1402, and installs all bolts, after the bolts are installed, the control terminal 902 starts the electric push rod 4, the first push block 7 drives the second push block 8 to move downward through the L-shaped block 1407, the second push block 8 drives the fixing rod 9 to move downward, the fixing rod 9 drives the sealing post 1201 to move downward, the spring 1202 is compressed, the sealing post 1201 gradually releases the blocking of the rectangular groove 11011, the fixing rod 9 drives the second density sensor 1404 and the second flow rate sensor 1405 to move downward, and aligns the second density sensor 1404 and the second flow rate sensor 1405 with the rectangular groove 11011, and when the second density sensor 1404 and the second flow rate sensor 1405 are in the state shown in fig. 4, the control terminal 902 stops the electric push rod 4 and the fixing rod 9 does not move downward.
When the first push block 7 and the second push block 8 move downwards, the first clamping groove 701 and the second clamping groove 801 are always matched with the strip-shaped block 301, the second clamping groove 801 is contacted with the first limiting block 204 below the strip-shaped block 301 and slides over the first limiting block along with the downward movement of the second push block 8, when the second push block 8 is positioned at the lower side of the first limiting block 204, the second clamping groove 801 is matched with the second limiting block 14061 at the lower side of the first limiting block 204, the second limiting block 14061 is clamped into the adjacent second clamping groove 801, the second push block 8 cannot move downwards, at this time, the second density sensor 1404 and the second flow rate sensor 1405 are aligned with the rectangular groove 11011, the state of the first push block 7 and the second push block 8 is shown in fig. 2, then an operator continues to repeat the locking process (locking the second push block 8) in the steps, the second push block 8 is fixed at the lower side of the first limiting block 204, and when the second push block 8 is locked by the second static state sensor 1001, the density of mud is measured by the second density sensor 1404, and the density sensor 1001 of mud is continuously measured.
The fixing sleeve 1101 needs to be installed in the pipe 1 in advance before the present measuring device is installed, specifically as follows: in the initial state, the fixing sleeve 1101 is not put into the pipeline 1 (the fixing sleeve 1101 is located right above the pipeline 1), the supporting plates 1302 and the fixing sleeve 1101 are in a state shown in fig. 7 (the supporting plates 1302 are deflected by a certain angle relative to the fixing sleeve 1101), the front-back distance between the two supporting plates 1302 is smaller than the diameter of the fixing sleeve 1101 (facilitating the subsequent insertion into the fixing seat 2), then an operator inserts the fixing sleeve 1101 into the fixing seat 2, a spline groove on the left side of the fixing sleeve 1101 slides downwards along the fixing seat 2 (the fixing sleeve 1101 cannot rotate), the fixing sleeve 1101 and the fixing seat 2 are continuously moved downwards along with the fixing sleeve 1101, the operator rotates the threaded sleeve 1103 when the threaded sleeve 1103 contacts with a thread of the fixing seat 2, the threaded sleeve 1103 drives the fixing sleeve 1101 to move downwards, when the upper end of the fixing sleeve 1101 contacts with the sealing ring 1102, the sealing ring 1102 is extruded to deform to seal the fixing seat 2 with the fixing sleeve 1101, and when the upper surface of the threaded sleeve 1101 is flush with the lower side of the fixing sleeve 202, the fixing sleeve 1101 is completely installed.
During the downward movement of the fixing sleeve 1101, the lower end of the support plate 1302 in a deflected state is firstly contacted with the lower side of the inner wall of the pipeline 1, as the fixing sleeve 1101 moves downward, the support plate 1302 starts to rotate anticlockwise due to the extrusion of the inner wall of the lower side of the pipeline 1, when the lower end of the fixing sleeve 1101 is contacted with the inner wall of the lower side of the pipeline 1, the support plate 1302 is vertical to the fixing sleeve 1101, the states of the support plate 1302 and the fixing sleeve 1101 are shown in fig. 6, the fixing sleeve 1101 is fixed in the pipeline 1 through the support plate 1302, the impact force of mud on the fixing rod 9 in the subsequent fixing sleeve 1101 is reduced, the vibration of the fixing rod 9 is reduced (the sensitivity of an electrical element in the first density sensor 1001 is reduced after the electric appliance element is subjected to vibration for a long time), the accuracy of the measured mud density is improved, the shape of the support plate 1302 is set to be reduced, the impact force of the mud on the support plate 1302 is improved, the stability of the fixing sleeve 1101 is improved, when the fixing sleeve 1101 is required to be removed, an operator rotates the threaded sleeve 1103, the threaded sleeve 1103 drives the fixing sleeve 1101 to move upwards through the first rotating rod 1301, the fixing sleeve 1101 drives the two support plates 1302 to move upwards, the support plate 1302 gradually and when the support plate 1302 is reset upwards and then the support plate 1101 is not driven to reset from the inner wall of the pipeline 1 is required to rotate, and the fixing sleeve 1101 is reset, and the state is not shown in the state 1 is reset, and the state when the operator is required to be reset, and is taken out.
Because the density of the slurry has a certain relation with the flow velocity, when the density of the slurry is measured, the density of flowing slurry is directly monitored in real time by knowing the relation between the density of the slurry and the flow velocity, the accuracy of the density of the slurry is ensured, the purpose of on-line monitoring is realized, and the specific operation is as follows: in a process of performing static measurement on the slurry at a certain time, if the slurry is detected in the housing 3, the second density sensor 1404 measures the density of the slurry to obtain the density of the slurry, then when the slurry in the housing 3 is discharged through the left L-shaped pipe 1401, the control terminal 902 controls the descending speed of the first push block 7, taking the descending speed of the first push block 7 as an example, the flow rate of the slurry passing through the L-shaped pipe 1401 is increased gradually, the second flow rate sensor 1405 is used for measuring the flow rate of the slurry in the L-shaped pipe 1401, at this time, the indication of the second density sensor 1404 is changed, the control terminal 902 records the value of the second density sensor 1404 and matches the value of the second flow rate sensor 1405, namely, under the condition that the slurry density is unchanged, the relationship between the slurry density and the flow rate is achieved by rapidly measuring the density of the slurry, and finally, when the first density sensor 1001 measures, the velocity value fed back by the first flow rate sensor 1002 is directly matched, the density of the slurry is the density, the true density of the slurry is the slurry, the density of the slurry is obtained, and the actual density of the slurry is not actually measured, and the density is measured, and the actual density is not actually measured, but the density is measured, and the density is actually changed, and the density is measured, and the density is actually the density is measured, and the density is actually and has the relationship with the density is actually and the density is measured.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (10)
1. The utility model provides a mud density measuring device with clearance function for oil logging, including pipeline (1), pipeline (1) rigid coupling has fixing base (2), fixing base (2) are installed through the bolt and are detected casing (3), characterized by, detect casing (3) rigid coupling and have electric putter (4), electric putter (4) telescopic end rigid coupling has connecting rod (5), connecting rod (5) rigid coupling has inserted bar (6) with detecting casing (3) sliding connection, detect casing (3) sliding connection have with inserted bar (6) rigid coupling first ejector pad (7), detect casing (3) one side of keeping away from fixing base (2) is provided with the through-hole, first ejector pad (7) are provided with second ejector pad (8) with detecting casing (3) sliding connection, second ejector pad (8) rigid coupling has dead lever (9), dead lever (9) are provided with first density sensor (1001) and first flow rate sensor (1002), be provided with connecting wire (901) in inserted bar (6), second ejector pad (8) and dead lever (9), detect casing (3) are provided with electric control terminal (902) and are connected with electric putter (902), connecting wire (901) is connected first density sensor (1001) and first flow rate sensor (1002) and control terminal (902) electricity, fixing base (2) are provided with the fixed establishment of protection dead lever (9), detection casing (3) are provided with static detection mechanism, detect casing (3) and are used for detecting the density of mud under the static condition, first density sensor (1001) and first flow rate sensor (1002) measure the density and the velocity of flow of mud in detecting pipeline (1) respectively.
2. The mud density measurement device with the cleaning function for petroleum logging according to claim 1, wherein the fixing mechanism comprises a fixing sleeve (1101), the fixing seat (2) is provided with a groove (201), the fixing sleeve (1101) is connected to the fixing seat (2) in a sliding mode, one side, close to the fixing seat (2), of the fixing sleeve (1101) is matched with the groove (201), a fixing rod (9) is connected with the fixing sleeve (1101) in a sliding mode, the fixing sleeve (1101) is provided with a rectangular groove (11011) matched with a first density sensor (1001) and a first flow rate sensor (1002), the fixing seat (2) is provided with a sealing ring (1102) located in the groove (201), the fixing seat (2) is in threaded fit with a threaded sleeve (1103) located in the groove (201), the threaded sleeve (1103) is connected with the fixing sleeve (1101) in a rotating mode, a sealing assembly used for sealing the rectangular groove (11011) is arranged in the fixing sleeve (1101), and the fixing sleeve (1101) is provided with a supporting assembly used for supporting the fixing sleeve (1101).
3. The mud density measuring device with the cleaning function for petroleum logging according to claim 2, wherein the sealing assembly comprises a sealing column (1201), the sealing column (1201) is slidably connected in the fixed sleeve (1101), the sealing column (1201) is matched with the rectangular groove (11011), and a spring (1202) is fixedly connected between the sealing column (1201) and the fixed sleeve (1101).
4. The mud density measuring device with the cleaning function for petroleum logging according to claim 2, wherein the supporting component comprises a first rotating rod (1301), the first rotating rod (1301) is rotatably connected to one end of the fixed sleeve (1101) far away from the fixed seat (2), the first rotating rod (1301) is fixedly connected with a symmetrically distributed supporting plate (1302), and a torsion spring (1303) is fixedly connected between the first rotating rod (1301) and the fixed sleeve (1101).
5. The mud density measuring device with a cleaning function for oil logging as set forth in claim 4, wherein the supporting plate (1302) is shaped like a trapezoid for reducing resistance of the supporting plate (1302) to mud.
6. The mud density measuring device with the cleaning function for petroleum logging according to claim 1, wherein the static detection mechanism comprises symmetrically-distributed L-shaped pipes (1401), the symmetrically-distributed L-shaped pipes (1401) are fixedly connected to the detection shell (3), the symmetrically-distributed L-shaped pipes (1401) are communicated with the detection shell (3), the pipeline (1) is provided with symmetrically-distributed connecting pipes (1402), the symmetrically-distributed connecting pipes (1402) are respectively matched with adjacent L-shaped pipes (1401) through bolts, one-way valves (1403) are arranged in the L-shaped pipes (1401), a second density sensor (1404) and a second flow rate sensor (1405) which are electrically connected with the control terminal (902) are arranged in the L-shaped pipes (1401) close to one side of the control terminal (902), and the fixing seat (2) is provided with a locking component for fixing the second pushing block (8).
7. The mud density measuring device with the cleaning function for oil logging as set forth in claim 6, wherein the diameter of the upper portion of the first push block (7) is larger than that of the lower portion, and the communication position of the detection housing (3) and the L-shaped pipe (1401) is lower than the upper surface of the first push block (7).
8. The device for measuring the mud density with the cleaning function for the oil logging as claimed in claim 6, wherein the locking component comprises a rotary table (1406), the fixed seat (2) is provided with an annular groove (202), the rotary table (1406) is rotationally connected with the annular groove (202), the fixed seat (2) is provided with symmetrically distributed arc grooves (203), the symmetrically distributed arc grooves (203) are communicated with the annular groove (202), a symmetrically distributed strip-shaped block (301) is arranged in the detection shell (3), a first push block (7) is provided with a first clamping groove (701) which is in sliding connection with an adjacent strip-shaped block (301), a second push block (8) is provided with a second clamping groove (801) which is matched with the adjacent strip-shaped block (301), the fixed seat (2) is provided with a symmetrically distributed first limiting block (204), the first limiting block (204) is matched with the adjacent second clamping groove (801), the rotary table (1406) is provided with a symmetrically distributed second limiting block (14061), the second limiting block (14061) is in sliding connection with the adjacent arc grooves (203), the second limiting block (14061) is fixedly connected with the second limiting block (1407) which is matched with the adjacent second clamping groove (801), the first push block (1407) is fixedly connected with the second limiting block (1407), the pipeline (1) is provided with a plugging assembly for sealing the connecting pipe (1402).
9. A mud density measuring device for oil well logging with cleaning function as set forth in claim 8, wherein the length of the arc-shaped groove (203) is longer than the length of the second stopper (14061).
10. The device for measuring the mud density with the cleaning function for petroleum logging according to claim 8, wherein the plugging assembly comprises second rotating rods (1501) which are symmetrically distributed, the second rotating rods (1501) which are symmetrically distributed are all rotationally connected with the pipeline (1), the second rotating rods (1501) are rotationally connected with adjacent connecting pipes (1402), the second rotating rods (1501) are fixedly connected with belts Kong Qiuti (1502) matched with the adjacent connecting pipes (1402), the second rotating rods (1501) are fixedly connected with first bevel gears (1503), and the rotating discs (1406) are fixedly connected with second bevel gears (1504) meshed with the first bevel gears (1503) which are symmetrically distributed.
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