CN211014094U - Underground high-temperature high-pressure fluid identification sensor and detection device thereof - Google Patents
Underground high-temperature high-pressure fluid identification sensor and detection device thereof Download PDFInfo
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- CN211014094U CN211014094U CN201921421323.2U CN201921421323U CN211014094U CN 211014094 U CN211014094 U CN 211014094U CN 201921421323 U CN201921421323 U CN 201921421323U CN 211014094 U CN211014094 U CN 211014094U
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Abstract
The utility model relates to a high temperature high pressure fluid discernment sensor in pit and detection device thereof. The underground high-temperature high-pressure fluid identification sensor comprises a pressure-bearing metal cylindrical mechanism shell, a wiring terminal and an annular electrode array, wherein a sealing element is arranged on the periphery of the shell; the terminal and the annular electrode array are respectively arranged at two corresponding ends of the shell through the insulating ceramic body. The detection device comprises a base body, a probe assembly, a circuit board and the underground high-temperature high-pressure fluid identification sensor. The utility model has simple integral structure and strong applicability, and can bear higher temperature and pressure; the electrode ring spacing is reasonably set, so that the measurement result is stable and accurate. The matched detection device can be used for conveniently carrying out experimental or substantial detection on the detected fluid.
Description
Technical Field
The utility model relates to a sensor field especially relates to a high temperature high pressure fluid discernment sensor in pit and detection device that oil gas reservoir normal water, oil, gas detected.
Background
The tester is a third generation formation tester in midway of oil and gas layer drilling, and formation pressure measurement and sampling of undisturbed formation fluid are realized through circulating pumping. By continuously pumping the formation fluid, the property of the formation fluid is judged in real time, the formation fluid is distinguished to belong to water, oil, gas or a mixture of the water, the oil, the gas or the mixture, and the original formation fluid is sampled after the property of the formation fluid is judged and kept stable. The existing tester for the drilling midway of the hydrocarbon reservoir is provided with three conventional stratum fluid identification sensors, namely a water content sensor, a conductivity sensor and a density sensor, and is used for judging the properties of stratum fluids. For example:
chinese patent CN102080540B provides a spectral fluid identification nipple of a formation tester which can be hung on the formation tester and has stable working performance. It includes: the device comprises a base body, wherein a first pipeline and a second pipeline which are connected in parallel are arranged in the base body, the first pipeline is connected with a spectral fluid identification sensor, and the first pipeline and the second pipeline are provided with control structures for controlling the on-off of the first pipeline and the second pipeline; the upper joint and the lower joint are both joints connected with a formation tester in series, the upper joint and the lower joint are respectively arranged at two ends of the base body, and sample channels communicated with the first pipeline and the second pipeline are respectively arranged in the upper joint and the lower joint; cables connected with a formation tester bus are arranged in the base body, the upper connector and the lower connector, and the spectrum fluid identification sensor is connected with the cables. The control structure includes: the first bidirectional hydraulic control valve is connected and arranged on the first pipeline; the second bidirectional hydraulic control valve is connected and arranged on the second pipeline; the first electromagnetic valve is in communication connection with the first bidirectional hydraulic control valve and controls the first bidirectional hydraulic control valve to act; the second electromagnetic valve is in communication connection with the second bidirectional hydraulic control valve and controls the second bidirectional hydraulic control valve to act; the third electromagnetic valve is simultaneously communicated with the first bidirectional hydraulic control valve and the second bidirectional hydraulic control valve and simultaneously controls the first bidirectional hydraulic control valve and the second bidirectional hydraulic control valve to act; the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve are all hung on the cable. The invention has the following: 1. the upper joint and the lower joint are adopted, the matrix is directly hung on the formation tester, the fluid test can be directly carried out, and the working efficiency is improved; 2. The spectral fluid identification sensor is adopted for fluid testing, the reliability and the stability are high, and the spectral fluid identification sensor is an independent integrated unit, so that the spectral fluid identification sensor can be quickly installed, detached and maintained from a sensor short section; 3. simple structure, reliable test and high test precision.
However, the conventional formation fluid identification sensor has the characteristics, but still has the problems of unstable working performance under high temperature and high pressure and large error.
Chinese patent CN204357430U the utility model discloses a "resistance conductivity sensor of oil logging fluid", including the shell that is the cylinder structure, the both ends of shell are equipped with and are used for sealing the watertight mechanism of the inside liquid of shell, the inside electrode mechanism that is used for measuring resistivity, the induction coil mechanism that is used for measuring the conductivity that still is equipped with of shell, and is used for adjusting the pressure compensation mechanism of the inside fluid pressure of shell. The utility model discloses a resistance conductivity sensor of oil logging fluid that provides, when the inside fluid pressure of water conservancy diversion passageway increases, pressure compensation mechanism can make its internal pressure keep level with water conservancy diversion passageway internal pressure through to the inside liquid pressurization of resistance conductivity sensor shell to guarantee that the internal and external pressure of water conservancy diversion passageway is unanimous, guaranteed electrode mechanism and induction coil mechanism effectively and measured numerical value's accuracy in the measurement process.
The utility model discloses a although the pressure-bearing problem of sensor has been solved, its mechanism is complicated, and can keep measuring accuracy to remain to verify under the high temperature fluid condition.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a simple structure, the little high temperature high pressure fluid identification sensor in pit of testing error under high temperature high pressure and detection device to the not enough of prior art existence.
The technical scheme is as follows:
a downhole high-temperature high-pressure fluid identification sensor comprises a shell, a wiring terminal and an electrode array, wherein the electrode array is an annular electrode array; the shell is a pressure-bearing metal cylindrical mechanism, a sealing groove is formed in the periphery of the shell, and a sealing element is arranged in the sealing groove; the wiring terminal and the electrode array are respectively arranged at two corresponding ends of the shell and are oppositely fixed on the end faces of the corresponding shells through the insulating ceramic bodies.
The above scheme further comprises: the annular electrode array comprises an emitter electrode AO, a first measuring electrode M1, a second measuring electrode M2 and a return electrode A1, wherein the emitter electrode A0 is located at the center, the second circle is the first measuring electrode M1, the third circle is the second measuring electrode M2, and the outermost circle is the return electrode A1.
The wiring terminal is a pin array and comprises a pin A, a pin B, a pin C, a pin D and a pin E, wherein the pin A is connected to the emitter electrode AO, the pin B is connected to the first measuring electrode M1, the pin C is connected to the second measuring electrode M2, and the pin D and the pin E are connected to the return electrode A1.
The electrode distance between the emitter electrode A0 and the first measuring electrode M1 is 2 units, the electrode distance between the first measuring electrode M1 and the second measuring electrode M2 is 1 unit, and the electrode distance between the second measuring electrode M2 and the return electrode A1 is 1 unit.
Polyether-ether-ketone PEEK is filled in the joint parts of the insulating ceramic body, the wiring terminals, the annular electrode array and the shell; the sealing element comprises a high-pressure sealing ring and a sealing gasket, wherein the sealing gasket is a PEEK gasket.
The utility model also provides a detection device for the underground high-temperature high-pressure fluid identification sensor, which comprises a base body, a probe component, a circuit board and the underground high-temperature high-pressure fluid identification sensor; a stepped hole and a test flow channel are arranged in the base body, the bottom of the stepped hole is communicated with the probe assembly through the test flow channel, and a downhole high-temperature high-pressure fluid identification sensor, a circuit board and a circuit board protective cover are sequentially arranged in the stepped hole from bottom to top; the protective cover of the circuit board is connected with the step hole in a sealing mode, the circuit board is connected with the wiring end of the underground high-temperature high-pressure fluid recognition sensor, the shell of the underground high-temperature high-pressure fluid recognition sensor is connected with the step hole in a sealing mode, and the electrode ring of the underground high-temperature high-pressure fluid recognition sensor is not in contact with the bottom of the step hole.
The test flow channel comprises a main flow channel and an auxiliary flow channel, the main flow channel is communicated with the auxiliary flow channel, and a pressure balance valve is arranged in the auxiliary flow channel.
A cavity is arranged between the circuit board protective cover and the underground high-temperature high-pressure fluid identification sensor, and the circuit board is fixedly arranged in the cavity.
The top surface of the circuit board protective cover is in an inverted cone shape, and a sealing ring is arranged on a contact surface between the circuit board protective cover and the inner wall of the step hole.
The utility model has the advantages that: the whole structure is simple, and the applicability is strong; the annular electrode and the contact pin are symmetrically embedded at two ends of the high-strength shell and are fixed in an insulating and sealing manner through polyether-ether-ketone PEEK filler, so that the high-strength shell can bear higher temperature and pressure; the electrode ring spacing is reasonably set, so that the measurement result is stable and accurate. The matched detection device can be used for conveniently carrying out experimental or substantial detection on the detected fluid.
Drawings
FIG. 1 is a schematic diagram of a prior art four-electrode measurement;
FIG. 2 is a schematic view of the fluid measuring device of FIG. 1;
fig. 3 is a schematic view of a ring electrode array according to the present invention;
fig. 4a and b are schematic perspective views of a down-looking and up-looking state of a downhole high-temperature and high-pressure fluid identification sensor according to the present invention;
FIG. 5 is a block diagram of a sensing device for a downhole high temperature, high pressure fluid identification sensor;
in the figure: 1. the device comprises a measured fluid, 2, a probe assembly, 2-1, a main flow passage, 2-2, a secondary flow passage, 3, a shell, 3-1, a contact pin (or a connecting terminal), 3-2, a sealing ring and a sealing gasket assembly, 3-3, an annular electrode array (also called an electrode ring), 3-4 insulating ceramic bodies, 4, a locking ring, 5, a lead, 6, a circuit board, 7, a circuit board protective cover, 8, a sealing ring, 9, a base body, A0, a transmitting electrode, A1, a return electrode, M1, a first measuring electrode, M2 and a second measuring electrode.
Detailed Description
The invention will be further explained with reference to the drawings and the specific embodiments.
Example 1:
referring to fig. 3 and 4, a downhole high-temperature high-pressure fluid identification sensor comprises a housing 3, a terminal 3-1 and an annular electrode array 3-3. The shell 3 is a thickened stainless steel cylindrical mechanism, a sealing groove is formed in the periphery of the shell, and a sealing ring and a sealing gasket assembly 3-2 are arranged in the sealing groove; the wiring terminal 3-1 and the annular electrode array 3-3 are respectively arranged at two corresponding ends of the shell 3 and are oppositely fixed at the end surface of the corresponding shell 3 through the insulating ceramic body 3-4.
Example 2:
further on the basis of example 1:
the annular electrode array 3-3 comprises an emitter electrode AO, a first measuring electrode M1, a second measuring electrode M2 and a return electrode a1, wherein the emitter electrode a0 is located at the center, the second circle is the first measuring electrode M1, the third circle is the second measuring electrode M2, and the outermost circle is the return electrode a 1.
The connection terminal 3-1 is a pin array, and comprises a pin A, a pin B, a pin C, a pin D and a pin E, wherein the pin A is connected to the emitter electrode AO, the pin B is connected to the first measurement electrode M1, the pin C is connected to the second measurement electrode M2, and the pin D and the pin E are connected to the return electrode A1.
Polyether-ether-ketone PEEK is filled in the joint parts of the insulating ceramic body, the wiring terminals, the annular electrode array and the shell; the sealing element comprises a high-pressure sealing ring and a sealing gasket, wherein the sealing gasket is a PEEK gasket. The characteristics of high temperature resistance and high pressure resistance of the PEEK are fully utilized.
Example 3:
the distance between the annular electrode arrays 3 in the above embodiment is designed according to the range of the measured fluid resistivity, and if the measured fluid resistivity is higher than 500 Ω m, the distance between the motors is larger than 1.5 mm; the electrode spacing of the ring electrodes was carried out using a ratio of 2:1:1, i.e. the electrode spacing between emitter electrode a0 and measurement electrode M1 was 2 units, the electrode spacing between first measurement electrode M1 and second measurement electrode M2 was 1 unit, and the electrode spacing between second measurement electrode M2 and return electrode a1 was 1 unit.
Manufacturing an annular electrode array 3 and a contact pin array 4, wherein the annular electrode array 3 is made of beryllium bronze material with good corrosion resistance and electrical conductivity; the pin array 4 has an outer diameter of 16mm and a length of 32mm, and is plated with gold, the pin array 4 and the annular electrode array 3 are mechanically pressed and then are bonded, so that the contact is good, and the contact resistance is less than 0.01 omega m.
And manufacturing a mould, embedding the annular electrode array 3 and the contact pin array 4 in PEEK, and fusing the contact pins and the annular electrode array 3 under the environment that the pressure is greater than 80Mpa so as to realize seamless and tight bonding of the PEEK with the annular electrode array 3 and the contact pin array 4.
Example 4:
referring to fig. 5, the detection device for the downhole high-temperature high-pressure fluid identification sensor comprises a base body 9, a probe assembly 2, a circuit board 6 and the downhole high-temperature high-pressure fluid identification sensor. A stepped hole and a test flow channel are arranged in the base body 9, the bottom of the stepped hole is communicated with the probe assembly 2 through the test flow channel, and a downhole high-temperature high-pressure fluid identification sensor, a circuit board 6 and a circuit board protective cover 7 are sequentially arranged in the stepped hole from bottom to top; the circuit board protective cover 7 is connected with the stepped hole in a sealing mode, the circuit board 6 is connected with a wiring terminal 3-1 of the underground high-temperature high-pressure fluid identification sensor, the shell 3 of the underground high-temperature high-pressure fluid identification sensor is connected with the stepped hole in a sealing mode, and the annular electrode array 3-3 of the underground high-temperature high-pressure fluid identification sensor is not in contact with the bottom of the stepped hole.
Example 5:
based on embodiment 4, the test flow channel comprises a main flow channel 2-1 and a secondary flow channel 2-2, wherein the main flow channel is communicated with the secondary flow channel, and a pressure balance valve (such as a pressure relief valve) is arranged in the secondary flow channel to keep the pressure of fluid entering the downhole high-temperature high-pressure fluid identification sensor electrode ring balanced.
A cavity is arranged between the circuit board protective cover 7 and the underground high-temperature high-pressure fluid identification sensor, and the circuit board 6 is fixedly arranged in the cavity.
The top surface of the circuit board protective cover 7 is in an inverted cone shape, and a sealing ring 8 is arranged on a contact surface between the circuit board protective cover 7 and the inner wall of the step hole. The circuit part is isolated from the fluid medium.
The locking ring 4 is tightly attached to the end face of the shell 3 and locks the underground high-temperature and high-pressure fluid sensor in the step hole through interference fit.
After the probe assembly 2 is seated, under the action of an internal piston, a sample to be detected enters the annular electrode array 3-3 and a gap of a step hole through the main flow channel 2-1 and the auxiliary flow channel 2-2; analyzing the characteristics of the sample in real time by using the underground high-temperature high-pressure fluid sensor; the annular electrode array can accurately measure the characteristics of the sample at the ejection position.
Claims (9)
1. A downhole high-temperature high-pressure fluid identification sensor comprises a shell, a wiring terminal and an electrode array, and is characterized in that: the electrode array is a ring-shaped electrode array; the shell is a pressure-bearing metal cylindrical mechanism, a sealing groove is formed in the periphery of the shell, and a sealing element is arranged in the sealing groove; the wiring terminal and the electrode array are respectively arranged at two corresponding ends of the shell and are oppositely fixed on the end faces of the corresponding shells through the insulating ceramic bodies.
2. A downhole high temperature and high pressure fluid identification sensor according to claim 1, wherein: the annular electrode array comprises an emitter electrode AO, a first measuring electrode M1, a second measuring electrode M2 and a return electrode A1, wherein the emitter electrode A0 is located at the center, the second circle is the first measuring electrode M1, the third circle is the second measuring electrode M2, and the outermost circle is the return electrode A1.
3. A downhole high temperature and high pressure fluid identification sensor according to claim 2, wherein: the wiring terminal is a pin array and comprises a pin A, a pin B, a pin C, a pin D and a pin E, wherein the pin A is connected to the emitter electrode AO, the pin B is connected to the first measuring electrode M1, the pin C is connected to the second measuring electrode M2, and the pin D and the pin E are connected to the return electrode A1.
4. A downhole high temperature and high pressure fluid identification sensor according to claim 3, wherein: the electrode distance between the emitter electrode A0 and the first measuring electrode M1 is 2 units, the electrode distance between the first measuring electrode M1 and the second measuring electrode M2 is 1 unit, and the electrode distance between the second measuring electrode M2 and the return electrode A1 is 1 unit.
5. The downhole high temperature high pressure fluid identification sensor of claim 4, wherein: polyether-ether-ketone PEEK is filled in the joint parts of the insulating ceramic body, the wiring terminals, the annular electrode array and the shell; the sealing element comprises a high-pressure sealing ring and a sealing gasket, wherein the sealing gasket is a PEEK gasket.
6. A detection device for a downhole high-temperature high-pressure fluid identification sensor comprises a base body, a probe assembly and a circuit board, and is characterized in that: further comprising a downhole high temperature and high pressure fluid identification sensor according to any of the preceding claims; a stepped hole and a test flow channel are arranged in the base body, the bottom of the stepped hole is communicated with the probe assembly through the test flow channel, and a downhole high-temperature high-pressure fluid identification sensor, a circuit board and a circuit board protective cover are sequentially arranged in the stepped hole from bottom to top; the protective cover of the circuit board is connected with the step hole in a sealing mode, the circuit board is connected with the wiring end of the underground high-temperature high-pressure fluid recognition sensor, the shell of the underground high-temperature high-pressure fluid recognition sensor is connected with the step hole in a sealing mode, and the electrode ring of the underground high-temperature high-pressure fluid recognition sensor is not in contact with the bottom of the step hole.
7. The detecting device for the downhole high-temperature high-pressure fluid identification sensor according to claim 6, wherein: the test flow channel comprises a main flow channel and an auxiliary flow channel, the main flow channel is communicated with the auxiliary flow channel, and a pressure balance valve is arranged in the auxiliary flow channel.
8. The detecting device for the downhole high-temperature high-pressure fluid identification sensor according to claim 6 or 7, wherein: a cavity is arranged between the circuit board protective cover and the underground high-temperature high-pressure fluid identification sensor, and the circuit board is fixedly arranged in the cavity.
9. The detecting device for the downhole high-temperature high-pressure fluid identification sensor according to claim 8, wherein: the top surface of the circuit board protective cover is in an inverted cone shape, and a sealing ring is arranged on a contact surface between the circuit board protective cover and the inner wall of the step hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921421323.2U CN211014094U (en) | 2019-08-29 | 2019-08-29 | Underground high-temperature high-pressure fluid identification sensor and detection device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921421323.2U CN211014094U (en) | 2019-08-29 | 2019-08-29 | Underground high-temperature high-pressure fluid identification sensor and detection device thereof |
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| Publication Number | Publication Date |
|---|---|
| CN211014094U true CN211014094U (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921421323.2U Active CN211014094U (en) | 2019-08-29 | 2019-08-29 | Underground high-temperature high-pressure fluid identification sensor and detection device thereof |
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| CN (1) | CN211014094U (en) |
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Effective date of registration: 20220215 Address after: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Patentee after: SINOPEC Group Patentee after: SINOPEC OILFIELD SERVICE Corp. Patentee after: SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd. Patentee after: Sinopec Jingwei Co.,Ltd. Patentee after: Shengli logging company of Sinopec Jingwei Co.,Ltd. Address before: 100101 Beichen West Road, Chaoyang District, Beijing 8 Beichen world center, block A 703. Patentee before: SINOPEC OILFIELD SERVICE Corp. Patentee before: SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd. Patentee before: WELL LOGGING COMPANY, SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd. |