CN209432342U - Multistage buffer isolation device of quartz crystal pressure gauge sensor - Google Patents
Multistage buffer isolation device of quartz crystal pressure gauge sensor Download PDFInfo
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- CN209432342U CN209432342U CN201920151353.XU CN201920151353U CN209432342U CN 209432342 U CN209432342 U CN 209432342U CN 201920151353 U CN201920151353 U CN 201920151353U CN 209432342 U CN209432342 U CN 209432342U
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- 239000000872 buffer Substances 0.000 title claims abstract description 158
- 239000013078 crystal Substances 0.000 title claims abstract description 22
- 239000010453 quartz Substances 0.000 title claims abstract description 22
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 238000002955 isolation Methods 0.000 title description 9
- 239000007788 liquid Substances 0.000 claims abstract description 35
- 230000005540 biological transmission Effects 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 8
- 238000011010 flushing procedure Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 2
- 210000005239 tubule Anatomy 0.000 claims 1
- 230000003139 buffering effect Effects 0.000 abstract description 15
- 239000012530 fluid Substances 0.000 abstract description 12
- 238000005259 measurement Methods 0.000 abstract description 4
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- 210000001736 capillary Anatomy 0.000 description 10
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
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- 229920002472 Starch Polymers 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
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Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses a multistage buffering and isolating device of a quartz crystal pressure gauge sensor, which mainly comprises a connecting piece, a tertiary buffering device, a secondary buffering device and a primary buffering device; one end of the connecting piece is connected with the third-stage buffer device, and the other end of the connecting piece is used for being connected with the sensor bracket; the third-stage buffer device is connected with the connecting piece and then is arranged in the second-stage buffer device with a gap, one end of the second-stage buffer device is closed, and the other end of the second-stage buffer device is connected with the connecting piece; the connected secondary buffer device and the connecting piece are arranged in the primary buffer device with a gap, one end of the primary buffer device is closed, and the other end of the primary buffer device is connected with the sensor support. Adopt the utility model discloses, can cushion the instantaneous impact of fluid in the pit to the sensor, prevent that fluid in the pit, mud liquid or precipitate from getting into the sensor inner chamber, improved the measurement accuracy of sensor and the reliability of data, the life of extension sensor and buffer, the practicality is strong.
Description
Technical field
The petroleum well testing auxiliary device technical field with pressure transmission function that the utility model relates to a kind of, specifically relates to
A kind of buffer unit of oil gas field oil, gas and water well quartz crystal pressure flowmeter sensor.Suitable for include high angle hole, horizontal well,
Various well testing operations including complex working condition well.
Background technique
Downhole electronic pressure bomb is widely used to obtain the pressure and temperature of oil, gas and water well in exploration of oil and gas field, development field
Value, and by being analyzed and researched to obtain the first hand data of reservoir to pressure and temperature, it is opened for the further exploration of oil gas field
Hair provides theoretical foundation.Pressure and temp test jobs be unable to do without electronic pressure gauge, according to the difference for selecting sensor, can be divided into
Quartz crystal pressure meter, strain-type pressure gauge two types.Compared with strain-type pressure gauge, quartz crystal pressure meter has high-precision
Exactness, high resolution features are widely used in measuring and recording the pressure and temperature in oil gas field stratum.
The core component of quartz crystal pressure meter is sensor.Since underground work bad environments are changeable, in addition to induction member
The production of part, which needs to select, to be met except the high temperature resistant of underground work, the special material of high pressure, in manufacture craft, should also be examined
Consider the operability of Field Force.Easy maintenance program, can be improved maintenance qualification rate, it is ensured that electronic pressure gauge
Accuracy and reliability, prolong its service life.
And be widely used at present high-grade pressure gauge sensor stand lower contact connection separator tube, then again with double connection
Headgear connects, and structure is single.Separator tube uses bend pipe, injects silicon since buffering bore is small, curved circle number at spring like
When oily, pipe overexertion is penetrated if injected, is easy residual bubble in separator tube；In addition, separator tube is connected to sensor branch
When frame lower contact, residual gas is also easy in joint；After the oiling chamber oiling of another duplex connector, pressure gauge assembling and
Insulating liquid is easy to run off in transmittance process, and after the bladdery buffering pipe device of residual is gone into the well with pressure gauge, down-hole pressure is easy
Production formations fluid or slurry liquid are headed into separator tube, even into sensor inner cavity.Influence gauge performance.Pressure gauge goes out
After well, with the reduction of pressure and temperature, invade to contamination precipitations such as production formations fluid, slurry liquids in separator tube, sensor
In pipe, cleaning maintenance is extremely difficult.When serious, the separator tube of blocking can not re-injection silicone oil, it is necessary to more renew separator tube, even
Sensor can not pressure-sensitive, cause pressure test to fail, pressure gauge must depot repair, increase cost, this be puzzlement scene behaviour
Make the problem of personnel.
It can be seen that whether the buffering isolating device of quartz crystal pressure flowmeter sensor, which can be well protected pressure gauge, makes it
Work normally the success or failure for directly determining construction operation.With the quickening of oilfield prospecting developing speed and oil-gas exploration and oil gas field
The continuous refinement of work, pressure test work are more and more frequent.To pressure test technique, more stringent requirements are proposed, in underground pressure
Pressure gauge sensor inner cavity, buffer unit must be carried out to reliably buffering in power test construction operation and are isolated, just can guarantee and apply
Work test is normally carried out.
Utility model content
The utility model is intended to provide a kind of quartz crystal pressure for defect and deficiency present in the above-mentioned prior art
Flowmeter sensor multi-buffer isolating device can be buffered downhole fluid to the temporary impact of sensor, be prevented using the utility model
Downhole fluid, slurry liquid or sediment enter sensor inner cavity, improve the measurement accuracy of sensor and the reliability of data, prolong
The service life of tall sensor and buffer, it is practical.
The utility model is realized by using following technical proposals:
A kind of quartz crystal pressure flowmeter sensor multi-buffer isolating device, it is characterised in that: it is mainly by connector, three
Grade buffer unit, secondary buffer device and first-level buffer device composition；Described connector one end is connect with three-level buffer unit,
The connector other end with sensor stand for connecting；The three-level buffer unit is connect with connector is placed on the second level
In buffer unit and there are gaps, and secondary buffer device is closed at one end, and the other end is connect with connector；Second level after connection is slow
Flushing device and connector are placed in first-level buffer device and there are gaps, first-level buffer device it is closed at one end, the other end is used for
It is connect with sensor stand.
The connector is the small cylindrical body broad in the middle in both ends, and top sets minor diameter external screw thread, and middle part is a circular bosses,
Boss is equipped with flat, and lower part sets major diameter external screw thread, and externally threaded upper end sets seal groove, is equipped with O-shaped sealing in seal groove
Circle, connector shaft set the internal screw thread for connecting with three-level buffer unit to through-hole, that externally threaded one end of major diameter is set.
The three-level buffer unit, top set the external screw thread for being connected with connector, and middle part sets flat, and lower part uses
Capillary, coiled.
The secondary buffer device be hollow and thin-walled cylindrical body closed at one end, inside set for outside connector major diameter
The connected internal screw thread of screw thread is equipped with multiple through-holes along wall thickness in secondary buffer device, and bottom sets flat, and insulating liquid is from level 2 buffering
Device through-hole enters, and flows into secondary buffer device.
The first-level buffer device is hollow and thin-walled cylindrical body closed at one end, and one end is equipped with and is used for and sensor stand
The connected internal screw thread of external screw thread.
The overall length of next screw thread step to three-level buffer unit end is slow less than second level on connector and three-level buffer unit
The hole depth of flushing device.
Connector be connected with sensor stand internal screw thread three-level buffer unit and again with it is next on secondary buffer device, sensing
Device bracket external screw thread is less than the hole depth of first-level buffer device to the overall length of three-level buffer unit end.
The secondary buffer device bottom is close to 90 ° of outer rim along the oblique uniformly distributed 4 diameter 1mm through-holes of wall thickness, Kong Shangduan
It is communicated with secondary buffer device inner cavity, lower end is communicated with first-level buffer device pressure transmission room.
The secondary buffer device be hollow and thin-walled cylindrical body closed at one end, chamfering suitable for reading, secondary buffer device
Internal screw thread upper end sets sealing surface.
In 180 ° along 2 diameter 2mm through-holes of the same radial equipartition of wall thickness, hole makes in well on first-level buffer device top
Medium is communicated with first-level buffer device inner cavity top.
Compared with prior art, the utility model is achieved has the beneficial effect that:
The utility model by by the inner cavity of three-level buffer unit, secondary buffer device, connector infuse after sufficient insulating liquid with
Sensor stand internal screw thread is connected to form one, and then connect the more of decomposition pressure meter with the sufficient insulating liquid first-level buffer device of note again
The pressure and temperature of downhole fluid is transferred to pressure and temperature by pressure transmission channel by grade buffering shielding system, instrument G.I.H
While sensor, downhole fluid is buffered to the temporary impact of sensor, prevents downhole fluid, slurry liquid or sediment from entering biography
Sensor inner cavity improves the measurement accuracy of sensor and the reliability of data, extends the service life of sensor and buffer, real
It is strong with property.
One, the utility model devises two-stage sediment structure, more demanding in geometric dimension, does not influence the group of sampler
Dress has sufficient insulating liquid storage space, it is ensured that preferably precipitating isolation buffer effect after each portion's connection in place.Therefore make
In after level-one isolation buffer fails, it can also start second level isolation buffer in time and be sealed, work safety, each functional areas are torn open
Unload it is easy to connect, both can united application, can also single use.
Two, the utility model is logical along the oblique uniformly distributed 4 diameter 1mm of wall thickness close to 90 ° of outer rim in secondary buffer device bottom
Hole overcomes when there is one of capillary hole plug, and pore in addition still can normal conduction pressure and by first-level buffer
The insulating liquid of device pressure transmission room is transmitted to the indoor effect of insulating liquid of secondary buffer device.
Three, the capillary porosity duct of the secondary buffer device setting of the utility model, insulating liquid are most lower from secondary buffer device
The capilar bore at end enters, through pore main body water conservancy diversion, the capillary of the nearly lower end setting of internal screw thread in secondary buffer device upper end
Pore outflow, into the larger isolation sap cavity of volume, high_voltage isolation liquid stream instantaneous pressure is reduced, insulating liquid after of short duration precipitating, if
In residual gas, part insulating liquid will enter in three-level buffer unit for three-level buffer unit and sensor module memory, both play and subtract
The slow impact to sensor, and carried out the effect of the purification of insulating liquid.
Four, the structure that the utility model is buffered using two separate cavities and three-level, separate cavities are larger to have decomposed single buffering
The impact force born, extends the pressure gauge sensor service life, and buffering effect is best.
Five, the utility model, which is used, is equipped with flat in secondary buffer device end, connection convenient with connector attended operation
Part lower part sets O-ring seal groove, connector upper external screw thread and lower end internal screw thread screw thread specification and three-level buffer unit external screw thread
Unanimously, it is all made of taper button made in Great Britain, is sealed more reliable.
Six, the first-level buffer device after the utility model assembling and the spacing of secondary buffer device annular space are smaller, insulating liquid
There is some tension therebetween, when laterally disposed instrument string, insulating liquid is not easy to flow out from entering pressure hole, guarantees have in first-level buffer device
Enough insulating liquids enter in secondary buffer device, and to the insulating liquid dead space of sensor inner cavity and three-level buffer unit into
Row supplement, has easy cleaning, is not easy to remain bubble when filling silicone oil, plays and buffer again and buffer action again.
Seven, the utility model selects heat resistance, chemical resistance, grease resistance, dense water, cold resistance, wearability, resistance to deformation
Property, the preferably fluorine element rubber material such as acid-resisting manufacture O-ring seal, improve sealing reliability, packing long service life.
Eight, the utility model has higher sealing performance in pressing extensive test job, can long-time stable it is close
Envelope.The requirement that live different well's conditions bottomhole pressure survey can be fully met, solve high sulfur-bearing, high carbon dioxide, high salinity,
Manometric technique problem in shaft bottom under high temperature, condition of high voltage provides reliable technology for oilfield prospecting developing and guarantees have very high
Value for applications.
Detailed description of the invention
Below in conjunction with specification drawings and specific embodiments, the utility model is described in further detail,
In:
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the utility model explosive view.
Marked in the figure:
1, connector, 2, three-level buffer unit, 3, secondary buffer device, 4, first-level buffer device, 5, sensor stand, 6,
O-ring seal, 7, capillary, 8, pressure transmission hole.
Specific embodiment
Embodiment 1
As a better embodiment of the utility model, it is slow that it discloses a kind of quartz crystal pressure flowmeter sensor multistages
Isolating device is rushed, is mainly made of connector 1, three-level buffer unit 2, secondary buffer device 3 and first-level buffer device 4；Institute
1 one end of connector stated is connect with three-level buffer unit 2, and 1 other end of connector with sensor stand 5 for connecting；Described
Three-level buffer unit 2 is connect with connector 1 to be placed in the secondary buffer device 3 and there are gap, and secondary buffer device 3
Closed at one end, the other end is connect with connector 1；Secondary buffer device 3 and connector 1 after connection are placed in first-level buffer device 4
It is interior and there are gap, first-level buffer device 4 it is closed at one end, the other end with sensor stand 5 for connecting.
Embodiment 2
As the preferred forms of the utility model, it discloses a kind of quartz crystal pressure flowmeter sensor multi-buffers
Isolating device, including connector 1, three-level buffer unit 2, secondary buffer device 3, first-level buffer device 4.
The connector 1 is cylindrical body broad in the middle small in ends, and top sets minor diameter external screw thread and 5 lower end of sensor stand
Internal screw thread is consistent, and middle part is a circular bosses, and boss lateral edge sets flat, and lower part sets major diameter external screw thread, and screw thread specification and second level are slow
3 upper end internal screw thread of flushing device is consistent, and external screw thread upper end sets O-shaped seal groove, axially sets through-hole, and upper hole is small, and lower opening is big, and lower opening sets interior
Screw thread, screw thread specification are consistent with 2 external screw thread of three-level buffer unit；
Three-level buffer unit 2, it is consistent with 5 internal screw thread of sensor stand that top sets external screw thread, and middle part sets flat, and lower part is to adopt
With capillary 7, coiled；
It is hollow and thin-walled cylindrical body closed at one end to secondary buffer device 3, inside sets internal screw thread, internal screw thread upper end sets sealing
Face, chamfering suitable for reading facilitate connector 1O type sealing ring 6 to connect with sealing surface, and screw thread specification is consistent with 1 lower end external screw thread of connector,
3 bottom of secondary buffer device close to 90 ° of outer rim under the oblique uniformly distributed 4 diameter 1mm through-holes of wall thickness, upper outlet to internal screw thread
Portion, under be exported to secondary buffer device 3 and go to the bottom outer rim, pass through the inside of secondary buffer device 3 with secondary buffer device 3 time bottom face
It wears, bottom outside sets flat.
In 180 ° along 2 diameter 2mm through-holes of the same radial equipartition of wall thickness, hole makes in well on first-level buffer device top
Medium is communicated with first-level buffer device inner cavity top.
The overall length of next screw thread step to 2 end of three-level buffer unit should be less than two on connector 1 and three-level buffer unit 2
The hole depth of grade buffer unit 3, and have enough space storage insulating liquids.
After connector 1 is connected with three-level buffer unit 2, then connect with 5 internal screw thread of sensor stand, then with level 2 buffering
Device 3 is socketed, and the overall length of 5 external screw thread step of sensor stand to 3 end of secondary buffer device is less than the hole of first-level buffer device 4
It is deep.
The pressure transmission hole useful space below that the utility model assembles rear stage buffer unit 4 is greater than secondary buffer device
3 capillarys go out the aperture useful space below, that is, assemble rear stage buffer unit 4 be stored in the following useful space of pressure transmission hole every
Chaotropic amount is greater than the isolation liquid measure that 3 capillary of secondary buffer device exports the useful space below.
After the utility model assembles, first-level buffer device 4 and secondary buffer device 3 are formed by annular space away from smaller,
When instrument string is laterally disposed, since insulating liquid is there are certain tension, it is not easy to flow out from entering pressure hole.
Working principle:
Based on the utility model discloses a kind of buffering isolating device for quartz crystal pressure flowmeter sensor, pass through by
The inner cavity that three-level buffer unit 2, connector 1 are connected is connect after infusing sufficient insulating liquid with sensor lower end bracket internal screw thread, then
It is placed in perfusion insulating liquid and bottom closing secondary buffer device 3 is connected, then be connected to the first-level buffer device 4 of perfusion insulating liquid
Form one, the multi-buffer shielding system of decomposition pressure meter, when pressure transmission channel is transferred to the pressure and temperature of downhole fluid
While pressure and temperature sensor, buffering downhole fluid prevents downhole fluid, slurry liquid or heavy to the temporary impact of sensor
Starch enters sensor inner cavity, improves the measurement accuracy of sensor and the reliability of data, extends sensor and buffer
Service life.
Inner cavity that the three-level buffer unit 2, connector 1 are connected infuse after sufficient insulating liquid with sensor lower end bracket screw thread
Connection, then with infuse sufficient insulating liquid and the closed secondary buffer device 3 in bottom is connected, then with the first-level buffer dress of infusing sufficient insulating liquid
Set 4 be connected be shaped to one, the multi-buffer shielding system of decomposition pressure meter；The utility model assembles rear stage buffer unit
The 4 pressure transmission hole useful space below is greater than 3 capillary of secondary buffer device and goes out the aperture useful space below.The utility model group
Install rear stage buffer unit 4 be stored in the following useful space of pressure transmission hole isolation liquid measure be greater than 3 capillary of secondary buffer device go out
The isolation liquid measure of the mouth useful space below.After the utility model assembles, first-level buffer device 4 and 3 institute of secondary buffer device
The annular space of formation when instrument string is laterally disposed, since insulating liquid is there are certain tension, is not easy from entering pressure hole stream away from smaller
Out.
Claims (9)
1. a kind of quartz crystal pressure flowmeter sensor multi-buffer isolating device, it is characterised in that: its mainly by connector (1),
Three-level buffer unit (2), secondary buffer device (3) and first-level buffer device (4) composition；Described connector (1) one end and three
Grade buffer unit (2) connects, and connector (1) other end with sensor stand (5) for connecting；The three-level buffer unit
(2) it connect and is placed in the secondary buffer device (3) and there are gap with connector (1), and secondary buffer device (3) one end
Closing, the other end are connect with connector (1)；Secondary buffer device (3) and connector (1) after connection are placed in first-level buffer device
(4) in and there are gap, first-level buffer device (4) it is closed at one end, the other end with sensor stand (5) for connecting.
2. a kind of quartz crystal pressure flowmeter sensor multi-buffer isolating device according to claim 1, it is characterised in that:
The connector (1) is the small cylindrical body broad in the middle in both ends, and top sets minor diameter external screw thread, and middle part is a circular bosses, boss
It is equipped with flat, lower part sets major diameter external screw thread, and externally threaded upper end sets seal groove, is equipped with O-ring seal in seal groove
(6), connector (1) axially sets through-hole, that externally threaded one end of major diameter sets the interior spiral shell for connecting with three-level buffer unit (2)
Line.
3. a kind of quartz crystal pressure flowmeter sensor multi-buffer isolating device according to claim 2, it is characterised in that:
The three-level buffer unit (2), top set the external screw thread for being connected with connector (1), and middle part sets flat, and lower part uses hair
Tubule (7), coiled.
4. a kind of quartz crystal pressure flowmeter sensor multi-buffer isolating device according to claim 3, it is characterised in that:
The secondary buffer device (3) is hollow and thin-walled cylindrical body closed at one end, inside set for the outer spiral shell of connector (1) major diameter
The connected internal screw thread of line is equipped with multiple through-holes along wall thickness in secondary buffer device (3), and bottom sets flat, and insulating liquid is slow from second level
Flushing device (3) through-hole enters, and flows into secondary buffer device (3).
5. a kind of quartz crystal pressure flowmeter sensor multi-buffer isolating device according to claim 4, it is characterised in that:
The first-level buffer device (4) be hollow and thin-walled cylindrical body closed at one end, one end be equipped with for sensor stand (5) outside
The connected internal screw thread of screw thread.
6. a kind of quartz crystal pressure flowmeter sensor multi-buffer isolating device according to claim 5, it is characterised in that:
The overall length of next screw thread step to three-level buffer unit (2) end is slow less than second level on connector (1) and three-level buffer unit (2)
The hole depth of flushing device (3).
7. a kind of quartz crystal pressure flowmeter sensor multi-buffer isolating device according to claim 6, it is characterised in that:
Connector (1) be connected with sensor stand (5) internal screw thread three-level buffer unit (2) and again with it is next on secondary buffer device (3),
Sensor stand (5) external screw thread is less than the hole depth of first-level buffer device (4) to the overall length of three-level buffer unit (2) end.
8. a kind of quartz crystal pressure flowmeter sensor multi-buffer isolating device according to claim 7, it is characterised in that:
Secondary buffer device (3) bottom is close to 90 ° of outer rim along the oblique uniformly distributed 4 diameter 1mm through-holes of wall thickness, hole upper end and second level
Buffer unit (3) inner cavity communicates, and lower end is communicated with first-level buffer device (4) pressure transmission room.
9. a kind of quartz crystal pressure flowmeter sensor multi-buffer isolating device according to claim 8, it is characterised in that:
The secondary buffer device (3) be hollow and thin-walled cylindrical body closed at one end, chamfering suitable for reading, secondary buffer device (3) it is interior
Threaded upper end sets sealing surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920151353.XU CN209432342U (en) | 2019-01-29 | 2019-01-29 | Multistage buffer isolation device of quartz crystal pressure gauge sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920151353.XU CN209432342U (en) | 2019-01-29 | 2019-01-29 | Multistage buffer isolation device of quartz crystal pressure gauge sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209432342U true CN209432342U (en) | 2019-09-24 |
Family
ID=67977827
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920151353.XU Active CN209432342U (en) | 2019-01-29 | 2019-01-29 | Multistage buffer isolation device of quartz crystal pressure gauge sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209432342U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112443316A (en) * | 2020-11-23 | 2021-03-05 | 大庆油田有限责任公司 | Liquid CO2Logging isolation liquid presetting process |
-
2019
- 2019-01-29 CN CN201920151353.XU patent/CN209432342U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112443316A (en) * | 2020-11-23 | 2021-03-05 | 大庆油田有限责任公司 | Liquid CO2Logging isolation liquid presetting process |
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