Data acquisition in well during production and drilling have occurred for many years. In the production sector of the exploration and production of hydrocarbons, the use of downhole gauges for production and reservoir evaluation are done using permanent and retrievable systems.
The retrievable systems are normally deployed inside production tubing using an electrical cable that transmits information from the well in real time to the surface as the system is pulled from the bottom of the sell to the surface, logging the entire well for data.
There are also permanently deployed gauges and semi permanent gauges. The permanent gauges use a cable mounted on the outside of the production tubing from the surface to where the gauge is located in the well. The gauges transmit data in real time continuously. If the cable is cut then the gauge is no longer connected to the surface and no data is transferred to the surface. The cable deployment is also very complicated and can cause the customer to have to go in the well to fish the system if the cable is not flush to the production tubing.
There are semi permanent gauges where the system seats in a side pocket mandrel inside the well. The gauge collects data and stores the data in memory. When the operator wants data he retrieves the gauge from the well. The customer uses specialty equipment to retrieve and install the gauge. There is a potential for the gauge to fall from the retrieval equipment and go to the bottom of the well. Also the gauge may not come out of the side pocket gauge.
A new system where the gauge does not to need to be retrieved from downhole and does not use downhole cables has been developed to decrease potential failures due to cut cables and complications in retrieving gauges from downhole.
A first aspect of an embodiment the system disclosed comprises a downhole module deployed in a wellbore. The downhole module comprises a protective housing adapted to well conditions, a power source, at least one sensor to collect desired data downhole such as borehole and production parameters, downhole electronics for communication, storing and transmitting data, and an antenna or other means to facilitate the wireless transfer of data.
A second aspect of an embodiment of the system disclosed comprises a receiver module capable of being deployed in the wellbore, and adapted to communicate with the downhole module wirelessly. The receiver module comprises a receiver housing also adapted to well conditions, a receiver power source, and receiver electronics. The receiver electronics facilitates communication, and storing and transmitting data wirelessly between the downhole module and the receiver module utilizing a receiver transceiver, and a receiver data storage medium adapted to store and transmit data. The receiver module further comprises a receiver antenna or other means to facilitate wireless data transfer between the receiver and downhole modules. In such an embodiment, the receiver antenna and the downhole module antenna would be operatively in communication with their respective transceivers to accomplish the wireless transfer of data. The receiver module could be deployed in the wellbore through casing or through tubing.
In one embodiment of the system, multiple downhole modules can be deployed downhole with the capability of communicating data between downhole modules via short distance wireless data transfer, as well as between downhole modules and the receiver module. Downhole modules could be arranged in such a manner as to provide real time data through the wireless transfer of data along a string of downhole modules. In such an embodiment, data could be collected at the surface from the downhole module via a cable or receiver module. Downhole modules can be deployed as part of the tubing string, casing string or through tubing in a wellbore. The communications can be between a module in the casing to the module in the tubing, multiple modules in the casing or tubing and between modules in the casing or tubing and a through tubing module deployed in the well via electric line, coil tubing, slick line or pipe conveyed.
In another embodiment of the system, the downhole sensor or sensors comprise at least one of a pressure or temperature sensor for measuring borehole or production parameters.
In a further embodiment of the system, the downhole and receiver modules power sources could comprise batteries, other means of generating power such as through the use of magnetic, acoustic, or vibrational energy, any other means of harvesting energy downhole, or by an energetic cable. In another embodiment, the downhole module could be recharged or otherwise powered by means of wireless power transfer from the receiver module. Such means of transferring power from the receiver module to the downhole module could include magnetically generated energy, acoustic energy, or any other form of wireless energy.
In a further embodiment of the system, a latch assembly is used to facilitate positioning the receiver module near the downhole module. In such an embodiment, the latch assembly comprises latch housing, and a spring loaded assembly embedded within the housing with at least one angular protrusion intended to cause resistance when encountering a groove within the downhole module housing. The latch assembly in such an embodiment would further comprise a connection to the receiver module.
In a further embodiment of the system, modules can communicate using electromagnetic waves, acoustic, compressional, or shear waves, pressure pulses, or other means of communications between the modules.
While preferred aspects and embodiments of the system are shown and described herein, it will be understood that the invention may be embodied otherwise than herein specifically illustrated or described, and that certain changes in form and arrangement of parts and the specific manner of practicing the system may be made within the underlying idea or principles of the system.
These and other features, aspects, and advantages of the system will become better understood with regard to the follow description, appended claims, and accompanying drawings where:
The various drawings supplied herein are representative of one or more embodiments of the present invention.
In the Summary above and in the Description of Embodiments, and the claims below, and in the accompanying drawings, reference is made to particular features of the system. It is to be understood that the disclosure of the system in this specification includes all possible combinations of such particular features. For example, where a particular feature is disclosed in the context of a particular aspect or embodiment of the system, or a particular claim, that feature can also be used, to the extent possible, in combination with and/or in the context of other particular aspects and embodiments of the system, and in the system generally.
Referring now to
Referring additionally to
Still referring to
In a preferred embodiment, data collected downhole by at least one sensor 8 is transmitted to downhole electronics 9 from the sensor or sensors 8, where the data is stored by the data storage medium of the downhole electronics 9 utilizing any desired digital data storage method. In a preferred embodiment, the data storage medium of downhole electronics 9 utilizes flash memory to store data. Downhole electronics 9 further comprises a transceiver to enable communication for purposes including transmitting to and receiving data from receiver module 2. Antenna 15 is at least partially embedded in downhole module 1, and facilitates such communication by providing the means for wireless communication. When the downhole module 1 sends data, the data is sent from downhole electronics 9 from the data storage medium, and through the transceiver, to the antenna 15 for broadcasting.
Further referring to
Receiver module 2 further comprises receiver electronics 10 at least partially disposed within receiver housing 11. The receiver electronics 10, in preferred embodiments, facilitates and controls communications, and further comprises a receiver transceiver, and a receiver data storage medium that can store and transmit data. The receiver data storage medium could utilize any desired means for storing digital data, including flash memory. Receiver antenna assembly 12 enables wireless communications, facilitating short hop data transfer between the downhole module 1 and the receiver module 2, and is operatively in communication with the receiver transceiver.
When data is collected from the downhole module 1, receiver module 2 is deployed inside the casing or tubing, as exemplified in
In such an embodiment comprising latch assembly 3, the latch assembly 3 connects to the receiver module 2 via a connection, and comprises at least one angular protrusion 4, on it spring assisted assembly 14, which creates resistance when encountering the discriminating latch profile 6 of the downhole module. The discriminating latch profile 6, in a preferred embodiment, comprises at least one groove around the interior of the downhole module housing 5 which catches the angular protrusion 4, thereby creating resistance that can be detected by the operator. Such resistance indicates that the receiver module 2 is positioned as desired for wireless communication with the downhole module 1. The spring assisted assembly 14 allows the receiver module 2 to continue movement through the casing or tubing, or otherwise be removed from the well, by allowing the angular protrusion 4 to recede into the receiver housing 11 when encountering the discriminating latch profile 6, thereby creating resistance that can be detected by the operator, but still allowing the receiver module 2 to continue movement through the casing or tubing as desired.
In embodiments that do not include the latch module 3 and corresponding discriminating latch profile 6, the receiver module 2 is deployed on an electric line with a casing collar locator, thereby allowing an operator to determine the location of the receiver module 2 and position receiver module 2 within the well as desired for wireless communication with the downhole module 1.
Still referring to both
In an embodiment of the system, multiple downhole modules 1 could be deployed along a casing or tubing string, creating a chain of downhole modules 1 such that the antenna 15 of one downhole module 1 could communicate data to another downhole module 1 where the data is received via another antenna 15. The data could then be transmitted along the chain of downhole modules 1, all the way to the surface if desired, thereby enabling real time communication of data. Data could be retrieved at the surface via the deployment of receiver module 2, or by a cable when the downhole module 1 further comprises a cable interface assembly.
In another embodiment of the system, the receiver module 2 could be used to provide power wirelessly to the downhole module 2 through the use of electromagnetic, magnetic, or other means of wireless power transfer. In an exemplary embodiment, power could be transferred from the receiver power source 13, or other source of power on the receiver module 2, to the power source 7 of downhole module 1 via the broadcast and corresponding receiving of electromagnetic energy which is then converted to electrical energy. In another exemplary embodiment, electrical energy could be created for the downhole module 1 through the disturbance of a magnetic field by the receiver module 2.
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Number | Date | Country | |
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