CN108593016B - Downhole flow logging device and method - Google Patents
Downhole flow logging device and method Download PDFInfo
- Publication number
- CN108593016B CN108593016B CN201810229575.9A CN201810229575A CN108593016B CN 108593016 B CN108593016 B CN 108593016B CN 201810229575 A CN201810229575 A CN 201810229575A CN 108593016 B CN108593016 B CN 108593016B
- Authority
- CN
- China
- Prior art keywords
- turbine
- flow
- probe
- new
- measurement result
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000000523 sample Substances 0.000 claims abstract description 185
- 238000005259 measurement Methods 0.000 claims abstract description 85
- 239000012530 fluid Substances 0.000 claims abstract description 72
- 238000012545 processing Methods 0.000 claims abstract description 25
- 239000002184 metal Substances 0.000 claims description 19
- 229910052751 metal Inorganic materials 0.000 claims description 19
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 15
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
- G01F1/32—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/10—Preventing damage by freezing or excess pressure or insufficient pressure
- G01F15/105—Preventing damage by hydraulic shocks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F7/00—Volume-flow measuring devices with two or more measuring ranges; Compound meters
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The embodiment of the application discloses a device and a method for logging downhole flow. The device comprises: the outer cylinder is sequentially provided with two outlets and an inlet from top to bottom; two turbine probes with different measuring ranges are arranged in the outer cylinder; the control valve is arranged in the outer cylinder and between the two turbine probes; the relay is arranged in the outer cylinder and is arranged between the adjacent control valve and the turbine probe; the current collector is arranged on the outer wall of the outer barrel and between the adjacent outlet and inlet; and the data processing unit is arranged on the ground and used for receiving the measurement result sent by the turbine probe, controlling the current direction passing through the relay according to the measurement result, controlling the control valve to move upwards or downwards so as to seal or open an outlet arranged between the two turbine probes, receiving a new measurement result sent by the turbine probe again, and determining the flow rate of the downhole fluid according to the new measurement result. The accuracy of flow measurements of downhole fluids may be improved.
Description
Technical Field
The application relates to the technical field of oil field injection or production profile well logging, in particular to a downhole flow well logging device and method.
Background
In the logging of production or injection profiles in an oil field, the flow of downhole fluids is typically measured by means of turbine probes in a continuous or point-and-multipoint measurement from top to bottom or from bottom to top. In the well bore, the flow rate of the production fluid increases along with the depth from the bottom to the uppermost production layer, the flow rate of the fluid entering the well bore from the formation gradually increases, and in addition, the flow rate of the fluid flowing through the inside of the instrument is actually the flow rate of the fluid plus the lowering speed of the cable when the instrument is used, so the flow rate easily exceeds the upper measurement limit of the probe.
Current logging instruments all adopt a single probe, and two situations can occur in the aspect of flow measurement: firstly, a high-displacement probe is adopted, and at the moment, due to the uncertainty of the flow of underground fluid, when the flow is low, the accuracy of the probe is insufficient, so that a logging error is caused; and secondly, a low-displacement probe is adopted, and when the flow rate is higher and exceeds the flow rate range, the probe is possibly damaged, and invalid logging is caused. Because the measurement range of each flow probe is limited, the measurement accuracy will be reduced or even lose sensitivity after the measurement range is exceeded, and both cannot be considered in a shaft of which the flow cannot be predicted. If logging is carried out by changing instruments, the logging discontinuity is caused, so that the logging reliability is reduced, meanwhile, the construction time is increased, and the cost is increased.
Disclosure of Invention
An object of the embodiments of the present application is to provide a downhole flow logging apparatus and method, so as to improve the accuracy of flow measurement of downhole fluid.
In order to solve the above technical problem, an embodiment of the present application provides a downhole flow logging device and a method, which are implemented as follows:
a downhole flow logging apparatus comprising:
the outer cylinder is sequentially provided with two outlets and an inlet from top to bottom;
the two turbine probes are arranged in the outer barrel and used for measuring the rotating speed of the turbine rotating under the flowing action of downhole fluid; the outlet is arranged between the two turbine probes, and the measuring ranges of the two turbine probes are different;
the control valve is arranged in the outer cylinder and is arranged between the two turbine probes;
the relay is arranged in the outer cylinder and between the adjacent control valve and the turbine probe, and is used for controlling the control valve to move upwards or downwards so as to seal or open an outlet arranged between the two turbine probes;
a collector disposed on an outer wall of the outer barrel between adjacent ones of the outlets and the inlets, the collector for plugging a wellbore in a well to allow downhole fluid to enter the outer barrel through the inlets;
and the data processing unit is arranged on the ground and used for receiving the measurement result sent by the turbine probe, controlling the current direction passing through the relay according to the measurement result so as to control the control valve to move upwards or downwards, receiving a new measurement result sent by the turbine probe again and determining the flow of the downhole fluid according to the new measurement result.
In a preferred embodiment, the two turbine probes include: a first turbine probe disposed between two of said outlets, and a second turbine probe disposed between adjacent of said inlets and said outlets; wherein the span of the second turbine probe is greater than the span of the first turbine probe.
In a preferred scheme, the relay comprises a metal coil and an iron core arranged in the metal coil; the iron core is connected with the control valve, when the current direction passing through the metal coil in the relay is forward or reverse, the metal coil generates a forward magnetic field or a reverse magnetic field, so that the iron core is magnetized by the forward magnetic field or the reverse magnetic field, and the iron core is controlled to move up or down by changing the current direction of the metal coil so as to drive the control valve to move up or down.
In a preferred embodiment, the current collector comprises a ball or a umbrella.
In a preferred scheme, the data processing unit comprises a data receiving module, a control module and a power supply module;
the data receiving module is used for receiving the measurement result sent by the turbine probe;
the control module is used for controlling the direction of current provided by the power supply module for the relay according to the measurement result so as to control the control valve to move upwards or downwards, receiving a new measurement result sent by the turbine probe again, and determining the flow rate of the downhole fluid according to the incidence relation between the preset rotating speed and the flow rate and the new measurement result;
the power supply module is connected with the relay through a cable and used for supplying power to the relay.
A method for downhole flow logging in the downhole flow logging device, the method comprising:
plugging a wellbore in the well through the collector such that downhole fluid enters the outer barrel through the inlet of the outer barrel;
receiving the measurement result sent by the turbine probe through the data processing unit, controlling the current direction passing through the relay according to the measurement result, controlling the control valve to move upwards or downwards, plugging or opening an outlet of the outer cylinder, which is arranged between the two turbine probes, receiving a new measurement result sent by the turbine probe again, and determining the flow rate of the downhole fluid according to the new measurement result; wherein the measurements are indicative of the rotational speed at which the turbine rotates under the flow of the downhole fluid.
In a preferred embodiment, the controlling the direction of the current through the relay according to the measurement result includes:
determining initial flow corresponding to the rotation speed represented by the measurement result according to the incidence relation between the preset rotation speed and the flow;
when the initial flow rate is smaller than a preset flow rate threshold value, adjusting the current direction passing through the relay to be a positive direction through the data processing unit to control the control valve to move upwards to seal an outlet arranged between the two turbine probes, so that the downhole fluid flows through a first turbine probe arranged between two outlets of the outer cylinder and a second turbine probe arranged between adjacent inlets and outlets of the outer cylinder and flows out of an outlet arranged above the first turbine probe; wherein the span of the second turbine probe is greater than the span of the first turbine probe; or,
when the initial flow is larger than the preset flow threshold, adjusting the current direction passing through the relay to be reverse through the data processing unit to control the control valve to move downwards to open an outlet arranged between the two turbine probes, so that the downhole fluid flows through the first turbine probe and the second turbine probe and flows out from the outlet arranged above the first turbine probe and the outlet arranged between the first turbine probe and the second turbine probe.
In a preferred embodiment, determining the flow rate of the downhole fluid based on the new measurement comprises:
when the initial flow is smaller than a preset flow threshold, respectively determining a new flow corresponding to the new rotating speed measured by the first turbine probe and a new flow corresponding to the new rotating speed measured by the second turbine probe in the new measurement result according to the incidence relation between the preset rotating speed and the flow, and taking the new flow corresponding to the new rotating speed measured by the first turbine probe as the flow of the downhole fluid.
In a preferred embodiment, determining the flow rate of the downhole fluid according to the new measurement result further includes:
when the initial flow is larger than a preset flow threshold, respectively determining a new flow corresponding to the new rotating speed measured by the first turbine probe and a new flow corresponding to the new rotating speed measured by the second turbine probe in the new measurement result according to the incidence relation between the preset rotating speed and the flow, and taking the new flow corresponding to the new rotating speed measured by the second turbine probe as the flow of the downhole fluid.
In a preferred scheme, the value range of the preset flow threshold value comprises 60-100 cubic meters per day.
According to the technical scheme provided by the embodiment of the application, the downhole flow logging device and the method provided by the embodiment of the application can plug a shaft in a well through the collector, so that downhole fluid enters the outer barrel through the inlet of the outer barrel; receiving the measurement result sent by the turbine probe through the data processing unit, controlling the current direction passing through the relay according to the measurement result, controlling the control valve to move upwards or downwards, plugging or opening an outlet of the outer cylinder, which is arranged between the two turbine probes, receiving a new measurement result sent by the turbine probe again, and determining the flow rate of the downhole fluid according to the new measurement result; wherein the measurements are indicative of the rotational speed at which the turbine rotates under the flow of the downhole fluid. In this way, when the downhole flow rate is low, the data processing unit can adjust the current direction passing through the relay to be positive to control the control valve to move upwards to close the outlet arranged between the two turbine probes, so that the downhole fluid flows through the first turbine probe arranged between the two outlets of the outer cylinder and the second turbine probe arranged between the adjacent inlet and outlet of the outer cylinder and flows out from the outlet arranged above the first turbine probe, and a new flow rate corresponding to a new rotating speed measured by the first turbine probe with a smaller range can be used as the flow rate of the downhole fluid, so as to improve the flow rate measurement accuracy; when the downhole flow is high, the current direction passing through the relay can be adjusted to be reverse through the data processing unit, so that the control valve is controlled to move downwards to open the outlet arranged between the two turbine probes, the downhole fluid flows through the first turbine probe and the second turbine probe and flows out from the outlet arranged above the first turbine probe and the outlet arranged between the first turbine probe and the second turbine probe, and the new flow corresponding to the new rotating speed measured by the first turbine probe with the large range is used as the flow of the downhole fluid, so that the flow passing through the first turbine probe with the small range can be reduced, the damage of the high-speed fluid to the turbine can be avoided, and the effective well logging can be further realized.
Drawings
The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for facilitating the understanding of the present invention, and do not specifically limit the shapes, the proportional sizes, and the like of the respective members of the present invention. Those skilled in the art, having the benefit of the teachings of this invention, may choose from the various possible shapes and proportional sizes to implement the invention as a matter of case.
FIG. 1 is a schematic diagram of a component configuration of an embodiment of a downhole flow logging device according to the present application;
FIG. 2 is a flow chart of an embodiment of a downhole flow logging method of the present application.
Detailed Description
The embodiment of the application provides a downhole flow logging device and a method.
The details of the present invention can be more clearly understood in conjunction with the accompanying drawings and the description of the embodiments of the present invention. However, the specific embodiments of the present invention described herein are for the purpose of illustration only and are not to be construed as limiting the invention in any way. Any possible variations based on the present invention may be conceived by the skilled person in the light of the teachings of the present invention, and these should be considered to fall within the scope of the present invention. It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, mechanical or electrical connections, communications between two elements, direct connections, indirect connections through intermediaries, and the like. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In order to improve the accuracy of the flow measurement of the downhole fluid, the present application provides a downhole flow logging device, fig. 1 is a schematic structural diagram of an embodiment of the downhole flow logging device, and as shown in fig. 1, the downhole flow logging device may include: the outer barrel 1 is provided with two outlets and an inlet from top to bottom, wherein the outlets are 11, the outlet is 12, and the inlet is 13; the two turbine probes are respectively a first turbine probe 2 and a second turbine probe 3, are arranged in the outer cylinder 1 and are used for measuring the rotating speed of the turbine rotating under the flowing action of downhole fluid; the outlet is arranged between the two turbine probes, and the measuring ranges of the two turbine probes are different; a control valve 4 arranged in the outer cylinder 1 and between the two turbine probes; the relay 5 is arranged in the outer cylinder 1 and between the adjacent control valve 4 and the turbine probe, and the relay 5 is used for controlling the control valve 4 to move upwards or downwards so as to seal or open an outlet arranged between the two turbine probes; a collector 6 disposed on the outer wall of the outer barrel 1 between adjacent said outlet and said inlet 13, said collector 6 being adapted to seal a wellbore in a well such that downhole fluid enters the outer barrel 1 through said inlet 13; and the data processing unit is arranged on the ground and used for receiving the measurement result sent by the turbine probe, controlling the current direction passing through the relay 5 according to the measurement result, controlling the control valve 4 to move upwards or downwards, receiving a new measurement result sent by the turbine probe again, and determining the flow of the downhole fluid according to the new measurement result.
In this embodiment, the two turbine probes may include: a first turbine probe 2 arranged between the outlet 11 and the outlet 12, and a second turbine probe 3 arranged between the adjacent inlet 13 and the outlet 12; wherein the range of the second turbine probe 3 is greater than the range of the first turbine probe 2.
In the present embodiment, the relay 5 may include a metal coil and an iron core provided in the metal coil. The iron core is connected with the control valve, when the current direction passing through the metal coil in the relay is forward or reverse, the metal coil can generate a forward magnetic field or a reverse magnetic field, so that the iron core is magnetized by the forward magnetic field or the reverse magnetic field, and the iron core is controlled to move up or down by changing the current direction of the metal coil so as to drive the control valve 4 to move up or down. For example, when the current direction passing through the metal coil in the relay is a forward direction, the metal coil may generate a forward magnetic field, so that the iron core is magnetized by the forward magnetic field, and at this time, the current direction of the metal coil in the relay may be changed to a reverse direction, so that the magnetic field of the iron core is opposite to the magnetic field direction generated by the metal coil, so as to control the iron core to move upward, so as to drive the control valve connected to the iron core to move upward.
In this embodiment, the current collector 6 may comprise a ball or umbrella. After the rubber ball is inflated or when the collecting umbrella is opened, the shaft in the well can be blocked, so that downhole fluid enters the outer barrel 1 through the inlet 13.
In this embodiment, the data processing unit may include a data receiving module, a control module, and a power supply module. The data receiving module can be used for receiving the measurement result sent by the turbine probe. The control module can be used for controlling the direction of current provided by the power supply module for the relay according to the measurement result so as to control the control valve to move upwards or downwards, receiving a new measurement result sent by the turbine probe again, and determining the flow rate of the downhole fluid according to the association relationship between the preset rotating speed and the flow rate and the new measurement result. The power supply module may be connected to the relay via a cable and may be used to power the relay.
In one implementation scenario, multiple turbine probes, e.g., 3, 4, 5, or more, may also be included in the downhole flow logging device. Wherein the measuring ranges of the turbine probes are different. An outlet, a control valve and a relay can be arranged between two adjacent turbine probes, and the direction of current passing through each relay is automatically controlled by the data processing unit according to the measuring ranges and the measuring results of the plurality of turbine probes so as to control the upward movement or the downward movement of each control valve and control the opening and closing of the outlet between two adjacent turbine probes.
The embodiment of the application also provides a downhole flow logging method. FIG. 2 is a flow chart of an embodiment of a downhole flow logging method of the present application. As shown in FIG. 2, the method for logging the flow rate in the well comprises the following steps.
Step S101: plugging a wellbore in the well with the collector to allow downhole fluid to enter the outer barrel through the inlet of the outer barrel.
Step S102: receiving the measurement result sent by the turbine probe through the data processing unit, controlling the current direction passing through the relay according to the measurement result, controlling the control valve to move upwards or downwards, plugging or opening an outlet of the outer cylinder, which is arranged between the two turbine probes, receiving a new measurement result sent by the turbine probe again, and determining the flow rate of the downhole fluid according to the new measurement result; wherein the measurements are indicative of the rotational speed at which the turbine rotates under the flow of the downhole fluid.
In this embodiment, controlling the current direction passing through the relay according to the measurement result may specifically include determining an initial flow corresponding to a rotation speed represented by the measurement result according to a preset association relationship between the rotation speed and the flow. When the initial flow rate is less than a preset flow rate threshold value, adjusting the direction of current passing through the relay to be a forward direction by the data processing unit to control the control valve to move upwards to seal off an outlet arranged between the two turbine probes, so that the downhole fluid flows through a first turbine probe arranged between two outlets of the outer cylinder and a second turbine probe arranged between adjacent inlets and outlets of the outer cylinder and flows out of an outlet arranged above the first turbine probe; wherein the span of the second turbine probe is greater than the span of the first turbine probe. When the initial flow is larger than the preset flow threshold, the direction of the current passing through the relay can be adjusted to be reverse through the data processing unit, so that the control valve is controlled to move downwards to open the outlet arranged between the two turbine probes, and the downhole fluid flows through the first turbine probe and the second turbine probe and flows out from the outlet arranged above the first turbine probe and the outlet arranged between the first turbine probe and the second turbine probe.
In this embodiment, determining the flow rate of the downhole fluid according to the new measurement result may specifically include, when the initial flow rate is smaller than a preset flow rate threshold, respectively determining a new flow rate corresponding to a new rotation rate measured by the first turbine probe and a new flow rate corresponding to a new rotation rate measured by the second turbine probe in the new measurement result according to the association relationship between the preset rotation rate and the flow rate, and taking the new flow rate corresponding to the new rotation rate measured by the first turbine probe as the flow rate of the downhole fluid. Because the measuring range of the first turbine probe is small, when the first turbine probe measures small flow, the measuring accuracy of the first turbine probe is high, and therefore the new flow corresponding to the new rotating speed measured by the first turbine probe with high accuracy is used as the flow of the downhole fluid, and the accuracy of measuring the flow of the downhole fluid can be improved. When the initial flow rate is greater than a preset flow rate threshold value, according to the association relationship between the preset rotation speed and the flow rate, a new flow rate corresponding to the new rotation speed measured by the first turbine probe and a new flow rate corresponding to the new rotation speed measured by the second turbine probe in the new measurement result are respectively determined, and the new flow rate corresponding to the new rotation speed measured by the second turbine probe is used as the flow rate of the downhole fluid. Therefore, the condition of invalid well logging caused by damage of the turbine probe can be avoided, and effective well logging is realized.
In this embodiment, the value range of the preset flow threshold may specifically include 60 to 100 cubic meters per day. In the practical application process, the setting can be carried out according to the actual fluid flow and the turbine probe measuring range.
In the present embodiment, the preset rotation speed and the flow rate may be in a positive correlation relationship between the flow rate and the rotation speed. For example, the flow rate is proportional to the square or cube of the rotational speed.
In summary, the downhole flow logging device and method provided by the embodiments of the present application can plug a wellbore in a well through the current collector, so that downhole fluid enters the outer cylinder through the inlet of the outer cylinder; receiving the measurement result sent by the turbine probe through the data processing unit, controlling the current direction passing through the relay according to the measurement result, controlling the control valve to move upwards or downwards, plugging or opening an outlet of the outer cylinder, which is arranged between the two turbine probes, receiving a new measurement result sent by the turbine probe again, and determining the flow rate of the downhole fluid according to the new measurement result; wherein the measurements are indicative of the rotational speed at which the turbine rotates under the flow of the downhole fluid. In this way, when the downhole flow rate is low, the data processing unit can adjust the current direction passing through the relay to be positive to control the control valve to move upwards to close the outlet arranged between the two turbine probes, so that the downhole fluid flows through the first turbine probe arranged between the two outlets of the outer cylinder and the second turbine probe arranged between the adjacent inlet and outlet of the outer cylinder and flows out from the outlet arranged above the first turbine probe, and a new flow rate corresponding to a new rotating speed measured by the first turbine probe with a smaller range can be used as the flow rate of the downhole fluid, so as to improve the flow rate measurement accuracy; when the downhole flow is high, the current direction passing through the relay can be adjusted to be reverse through the data processing unit, so that the control valve is controlled to move downwards to open the outlet arranged between the two turbine probes, the downhole fluid flows through the first turbine probe and the second turbine probe and flows out from the outlet arranged above the first turbine probe and the outlet arranged between the first turbine probe and the second turbine probe, and the new flow corresponding to the new rotating speed measured by the first turbine probe with the large range is used as the flow of the downhole fluid, so that the flow passing through the first turbine probe with the small range can be reduced, the damage of the high-speed fluid to the turbine can be avoided, and the effective well logging can be further realized.
A plurality of elements, components, parts or steps can be provided by a single integrated element, component, part or step. Alternatively, a single integrated element, component, part or step may be divided into separate plural elements, components, parts or steps. The disclosure of "a" or "an" to describe an element, ingredient, component or step is not intended to foreclose other elements, ingredients, components or steps.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (6)
1. A downhole flow logging device, comprising:
the outer cylinder is sequentially provided with two outlets and an inlet from top to bottom;
the two turbine probes are arranged in the outer barrel and used for measuring the rotating speed of the turbine rotating under the flowing action of downhole fluid; the outlet is arranged between the two turbine probes, and the measuring ranges of the two turbine probes are different;
the control valve is arranged in the outer cylinder and is arranged between the two turbine probes;
the relay is arranged in the outer cylinder and between the adjacent control valve and the turbine probe, and is used for controlling the control valve to move upwards or downwards so as to seal or open an outlet arranged between the two turbine probes;
a collector disposed on an outer wall of the outer barrel between adjacent ones of the outlets and the inlets, the collector for plugging a wellbore in a well to allow downhole fluid to enter the outer barrel through the inlets;
the data processing unit is arranged on the ground and used for receiving the measurement result sent by the turbine probe, controlling the current direction passing through the relay according to the measurement result so as to control the control valve to move upwards or downwards, receiving a new measurement result sent by the turbine probe again and determining the flow of the downhole fluid according to the new measurement result; wherein said controlling a direction of current through said relay based on said measurement comprises:
determining initial flow corresponding to the rotation speed represented by the measurement result according to the incidence relation between the preset rotation speed and the flow;
when the initial flow rate is smaller than a preset flow rate threshold value, adjusting the current direction passing through the relay to be a positive direction through the data processing unit to control the control valve to move upwards to seal an outlet arranged between the two turbine probes, so that the downhole fluid flows through a first turbine probe arranged between two outlets of the outer cylinder and a second turbine probe arranged between adjacent inlets and outlets of the outer cylinder and flows out of an outlet arranged above the first turbine probe; wherein the span of the second turbine probe is greater than the span of the first turbine probe; or,
when the initial flow rate is greater than the preset flow rate threshold value, adjusting the current direction passing through the relay to be reverse through the data processing unit to control the control valve to move downwards to open an outlet arranged between the two turbine probes, so that the downhole fluid flows through the first turbine probe and the second turbine probe and flows out of the outlet arranged above the first turbine probe and the outlet arranged between the first turbine probe and the second turbine probe;
determining a flow rate of a downhole fluid based on the new measurements, comprising:
when the initial flow is smaller than a preset flow threshold, respectively determining a new flow corresponding to a new rotating speed measured by the first turbine probe and a new flow corresponding to a new rotating speed measured by the second turbine probe in the new measurement result according to the incidence relation between the preset rotating speed and the flow, and taking the new flow corresponding to the new rotating speed measured by the first turbine probe as the flow of the downhole fluid;
when the initial flow is larger than a preset flow threshold, respectively determining a new flow corresponding to a new rotating speed measured by the first turbine probe and a new flow corresponding to a new rotating speed measured by the second turbine probe in the new measurement result according to the incidence relation between the preset rotating speed and the flow, and taking the new flow corresponding to the new rotating speed measured by the second turbine probe as the flow of the downhole fluid; the value range of the preset flow threshold value comprises 60-100 cubic meters per day.
2. The downhole flow logging device of claim 1 wherein said two turbine probes comprise: a first turbine probe disposed between two of said outlets, and a second turbine probe disposed between adjacent of said inlets and said outlets; wherein the span of the second turbine probe is greater than the span of the first turbine probe.
3. The downhole flow logging device of claim 1 wherein said relay comprises a metal coil and a core disposed within said metal coil; the iron core is connected with the control valve, when the current direction passing through the metal coil in the relay is forward or reverse, the metal coil generates a forward magnetic field or a reverse magnetic field, so that the iron core is magnetized by the forward magnetic field or the reverse magnetic field, and the iron core is controlled to move up or down by changing the current direction of the metal coil so as to drive the control valve to move up or down.
4. The downhole flow logging device of claim 1 wherein said current collector comprises a ball or umbrella.
5. The downhole flow logging device of claim 1 wherein said data processing unit comprises a data receiving module, a control module and a power module;
the data receiving module is used for receiving the measurement result sent by the turbine probe;
the control module is used for controlling the direction of current provided by the power supply module for the relay according to the measurement result so as to control the control valve to move upwards or downwards, receiving a new measurement result sent by the turbine probe again, and determining the flow rate of the downhole fluid according to the incidence relation between the preset rotating speed and the flow rate and the new measurement result;
the power supply module is connected with the relay through a cable and used for supplying power to the relay.
6. A downhole flow logging method applied to the downhole flow logging device of any one of claims 1-5, wherein the method comprises the following steps:
plugging a wellbore in the well through the collector such that downhole fluid enters the outer barrel through the inlet of the outer barrel;
receiving the measurement result sent by the turbine probe through the data processing unit, controlling the current direction passing through the relay according to the measurement result, controlling the control valve to move upwards or downwards, plugging or opening an outlet of the outer cylinder, which is arranged between the two turbine probes, receiving a new measurement result sent by the turbine probe again, and determining the flow rate of the downhole fluid according to the new measurement result; wherein the measurements are indicative of the rotational speed at which the turbine rotates under the flow of the downhole fluid; wherein said controlling a direction of current through said relay based on said measurement comprises:
determining initial flow corresponding to the rotation speed represented by the measurement result according to the incidence relation between the preset rotation speed and the flow;
when the initial flow rate is smaller than a preset flow rate threshold value, adjusting the current direction passing through the relay to be a positive direction through the data processing unit to control the control valve to move upwards to seal an outlet arranged between the two turbine probes, so that the downhole fluid flows through a first turbine probe arranged between two outlets of the outer cylinder and a second turbine probe arranged between adjacent inlets and outlets of the outer cylinder and flows out of an outlet arranged above the first turbine probe; wherein the span of the second turbine probe is greater than the span of the first turbine probe; or,
when the initial flow rate is greater than the preset flow rate threshold value, adjusting the current direction passing through the relay to be reverse through the data processing unit to control the control valve to move downwards to open an outlet arranged between the two turbine probes, so that the downhole fluid flows through the first turbine probe and the second turbine probe and flows out of the outlet arranged above the first turbine probe and the outlet arranged between the first turbine probe and the second turbine probe;
determining a flow rate of a downhole fluid based on the new measurements, comprising:
when the initial flow is smaller than a preset flow threshold, respectively determining a new flow corresponding to a new rotating speed measured by the first turbine probe and a new flow corresponding to a new rotating speed measured by the second turbine probe in the new measurement result according to the incidence relation between the preset rotating speed and the flow, and taking the new flow corresponding to the new rotating speed measured by the first turbine probe as the flow of the downhole fluid;
when the initial flow is larger than a preset flow threshold, respectively determining a new flow corresponding to a new rotating speed measured by the first turbine probe and a new flow corresponding to a new rotating speed measured by the second turbine probe in the new measurement result according to the incidence relation between the preset rotating speed and the flow, and taking the new flow corresponding to the new rotating speed measured by the second turbine probe as the flow of the downhole fluid; the value range of the preset flow threshold value comprises 60-100 cubic meters per day.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810229575.9A CN108593016B (en) | 2018-03-20 | 2018-03-20 | Downhole flow logging device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810229575.9A CN108593016B (en) | 2018-03-20 | 2018-03-20 | Downhole flow logging device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108593016A CN108593016A (en) | 2018-09-28 |
| CN108593016B true CN108593016B (en) | 2020-11-06 |
Family
ID=63626879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810229575.9A Active CN108593016B (en) | 2018-03-20 | 2018-03-20 | Downhole flow logging device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108593016B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1078045A1 (en) * | 1982-01-22 | 1984-03-07 | Всесоюзный Научно-Исследовательский И Проектно-Конструкторский Институт Комплексной Автоматизации Нефтяной И Газовой Промышленности | Apparatus for measuring flow rate of moist steam in process of thermal treatment of formation |
| CN203808979U (en) * | 2014-03-10 | 2014-09-03 | 中国石油天然气股份有限公司 | Downhole turbine flowmeter |
| CN204988374U (en) * | 2015-09-14 | 2016-01-20 | 天信仪表集团有限公司 | Dual turbine flowmeter |
| CN103261582B (en) * | 2010-12-17 | 2018-05-08 | 埃克森美孚上游研究公司 | The method for automatically controlling and positioning for autonomous downhole tool |
-
2018
- 2018-03-20 CN CN201810229575.9A patent/CN108593016B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1078045A1 (en) * | 1982-01-22 | 1984-03-07 | Всесоюзный Научно-Исследовательский И Проектно-Конструкторский Институт Комплексной Автоматизации Нефтяной И Газовой Промышленности | Apparatus for measuring flow rate of moist steam in process of thermal treatment of formation |
| CN103261582B (en) * | 2010-12-17 | 2018-05-08 | 埃克森美孚上游研究公司 | The method for automatically controlling and positioning for autonomous downhole tool |
| CN203808979U (en) * | 2014-03-10 | 2014-09-03 | 中国石油天然气股份有限公司 | Downhole turbine flowmeter |
| CN204988374U (en) * | 2015-09-14 | 2016-01-20 | 天信仪表集团有限公司 | Dual turbine flowmeter |
Non-Patent Citations (1)
| Title |
|---|
| 提高同轴线相位法找水仪温度性能的技术研究;冯永伟;《中国优秀硕士学位论文全文数据库 基础科学辑》;20110615;正文第7-14页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108593016A (en) | 2018-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205297504U (en) | Bridge type concentric seal testing, measuring and adjusting integrated control device | |
| CN102071926B (en) | Method and device for measuring full-hole annular pressure and method and device for controlling same | |
| RU2469182C2 (en) | Method for performing well operations using submersible electric centrifugal pumps, and system for method's implementation | |
| CN104047583A (en) | Underground magnetic control electric water distributor and control method thereof | |
| CN105547369B (en) | A kind of groundwater velocity and direction single hole measurement apparatus | |
| CN106164406A (en) | The tool-face of the downhole tool with the drill string friction of reduction controls | |
| CN101210546A (en) | Pump control for formation testing | |
| CN108729868B (en) | Deep sea drilling overflow and lost circulation monitoring method | |
| CN102597422A (en) | Formation fluid sampling control | |
| CN205689189U (en) | A kind of intelligent watering device | |
| AU2018298054B2 (en) | Automated analysis of drilling fluid | |
| CA2806186A1 (en) | Velocity sensor for a plunger lift system | |
| RU2601344C2 (en) | Device, system and method for sampling formation medium | |
| EP2085753B1 (en) | Flow meter inserted in a ball valve | |
| CN106150456A (en) | A kind of water injection well on-line intelligence regulation and control Tap | |
| CN110441545A (en) | Direction of groundwater flow, flow velocity, sampling tester in karst hole drilling | |
| CN203925452U (en) | Down-hole magnetic control electric water distribution device | |
| CN116792067A (en) | Underground cableless intelligent measurement and control system device and application method | |
| CN105068582B (en) | DCS-based high-level water collection cooling tower water level maintaining control method | |
| CN108593016B (en) | Downhole flow logging device and method | |
| CN106121570B (en) | Down-hole annular flow electromagnetic measuring device and measuring method | |
| CN104563985A (en) | Digital separate injection test allocation system and method | |
| CN105089619A (en) | Electric seal testing method and electric seal testing instrument for bridge type concentric separate injection pipe column | |
| CN103967477B (en) | A kind of horizontal well parameter detection method based on conducting probe array and information fusion technology | |
| CN106441512A (en) | Floater water level detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |