Drilling data transmission apparatus, system, and method

Abstract

The present application relates to a drilling data transmission apparatus, comprising: an internal bore; and a memory compartment, a sealing sliding sleeve, and a reduced-diameter portion arranged along the internal bore. The reduced-diameter portion reduces an inner diameter of the internal bore to form a shoulder structure. The sealing sliding sleeve is disposed adjacent to the reduced-diameter portion, and extends away from the ground starting from a position proximal to the reduced-diameter portion. The memory compartment is configured to accommodate a memory for storing drilling data, and an opening of the memory compartment is covered by the sealing sliding sleeve. The sealing sliding sleeve is configured to be slidable along an inner wall of the internal bore between a first position and a second position, so as to cover the opening of the memory compartment at the first position and to expose the opening of the memory compartment at the second position, thereby allowing the memory in the memory compartment to be released into the internal bore. In addition, the present application further relates to a corresponding memory recovery apparatus, a drilling data transmission system, and a drilling data transmission method.

Description

A drilling data transmission device, system and method Technical Field

[0001] This invention belongs to the field of drilling measurement and control technology, and mainly relates to a drilling data transmission device and method, as well as a memory retrieval device and method. Background Technology

[0002] Logging While Drilling (LWD) generally refers to measuring formation rock physical parameters during drilling and transmitting the results to the surface for processing using a data transmission system. With increasing measurement accuracy, LWD tools generate a large amount of data during operation. Currently used MWD data transmission tools cannot transmit this high-precision imaging and other large amounts of data to the surface without loss, thus failing to fully utilize the guiding role of these LWD tools during drilling. To solve this problem, various high-speed data transmission technologies have been developed, including fiber optic data transmission, smart drill pipe data transmission, and downhole release data transmission. Downhole release data transmission is a new technology for lossless transmission of downhole data, including annular release and drill string release. Specifically, the LWD tool is installed in a release drill collar. During logging, the LWD measurement data is first transferred to a logging data storage device. At an appropriate time, the storage device is released and carried to the surface by drilling fluid for retrieval, allowing the logging data to be read and applied.

[0003] Patents 201410798838.X, 201910990841.4, and US9739141B2 disclose the use of a data storage device installed on the drill collar to store downhole acquired data. Under certain conditions, the storage device is released downhole into the wellbore annulus, carried to the surface by drilling fluid, and then the stored data is read from the storage device at the surface. This technology for lossless transmission of downhole measurement data effectively solves the technical problem of transmitting large amounts of downhole data while drilling. Patent application 202310954843.4 describes a data transmission method for releasing and retrieving storage devices within the drill string; the data transmission structure in this patent is relatively complex.

[0004] Downhole release-type data transmission can transfer large amounts of data downhole, but due to the small size of the memory and the complexity of downhole drilling conditions, the recovery of the memory on the surface faces certain challenges. Furthermore, current memory recovery methods have limitations depending on different downhole conditions. For example, in the presence of lost circulation in the wellbore, the drilling fluid may not be able to carry the memory to the surface in time, or long-distance horizontal drilling operations introduce uncertainties and challenges to annular release-type data transmission. Additionally, the memory needs to be detached from the circuit structure and enter the drilling fluid during release. Improving the simplicity of downhole memory release and preventing the drilling fluid from affecting circuit safety (e.g., causing short circuits) during release are also challenges for downhole release-type data transmission. Summary of the Invention

[0005] To address at least one deficiency in the prior art, this application provides a measurement-while-drilling data transmission device, system, and method.

[0006] The first aspect of this application provides a drilling data transmission device, including an internal cavity and a storage compartment, a sealing sleeve, and a reduced-diameter section arranged along the internal cavity.

[0007] The reduced diameter section reduces the inner diameter of the internal cavity, thereby forming a shoulder structure.

[0008] The sealing sleeve is disposed on one side of the reduced diameter portion and extends along the inner diameter of the inner cavity;

[0009] The storage compartment is used to house a storage device for storing drilling data, and the opening of the storage compartment is covered by a sealing sleeve.

[0010] The sealing sleeve is configured to slide along the inner wall of the internal cavity between a first position and a second position, thereby covering the opening of the memory compartment at the first position and exposing the opening of the memory compartment at the second position to allow the memory in the memory compartment to be released into the internal cavity.

[0011] According to the drilling data transmission device of the first aspect of this application, wherein the reduced diameter section gradually or stepwise reduces the inner diameter of the internal cavity to form a shoulder structure.

[0012] The drilling data transmission apparatus according to the first aspect of this application, wherein the internal cavity is made of a non-magnetic material.

[0013] According to the drilling data transmission apparatus of the first aspect of this application, the memory compartment includes a memory circuit board for providing circuit connection and data communication for the memory, and the memory compartment also includes an elastic mechanism for ejecting the memory from the memory compartment after the opening of the memory compartment is opened.

[0014] According to the drilling data transmission apparatus of the first aspect of this application, the elastic mechanism is an elastic connection mechanism, one end of which is connected to the memory circuit board and the other end of which is connected to the memory, thereby supplying power to the memory chip and providing data communication.

[0015] The drilling data transmission apparatus according to the first aspect of this application further includes a displacement sensor and a controller, the displacement sensor being used to detect movement of the sealing sleeve, and the controller being configured to disconnect power to the memory circuit board in response to movement of the sealing sleeve.

[0016] The drilling data transmission apparatus according to the first aspect of this application, wherein the memory is provided with a magnetic material.

[0017] The drilling data transmission device according to the first aspect of this application further includes a sealing pin to prevent drilling fluid from entering the internal sealed circuit space along the circuit groove or hole.

[0018] According to the drilling data transmission device of the first aspect of this application, the sealing sleeve includes a fixed part, a sliding sleeve and a spring. The fixed part is fixedly installed on the internal cavity. One end of the spring is installed on the fixed part and the other end of the spring is attached to the sliding sleeve, so that the sliding sleeve causes the spring to contract under the action of external force, thereby realizing the sliding sleeve sliding relative to the fixed part, thereby exposing the opening of the memory compartment to release the memory.

[0019] According to the drilling data transmission device of the first aspect of this application, the fixed part is an outer sliding sleeve, the sliding sleeve is an inner sliding sleeve, and the spring is fixed inside the outer sliding sleeve and abuts against the inner sliding sleeve, so that the inner sliding sleeve slides back and forth inside the outer sliding sleeve.

[0020] According to the drilling data transmission device of the first aspect of this application, the reduced diameter section includes a plurality of reduced diameter sections, each of which includes a corresponding sealing sleeve and a storage compartment.

[0021] A second aspect of this application provides a memory retrieval device for retrieving a memory from a drilling data transmission device according to a first aspect of this application. The memory retrieval device includes a retrieval chamber and a slide bar shaft. The retrieval chamber includes a sliding part and a guide head. The sliding part and the guide head are designed to approach each other to form an inner chamber for capturing and accommodating the memory.

[0022] The sliding part can move along the slide bar axis to move closer to or further away from the guide head;

[0023] The outer dimensions of the sliding part are designed to be blocked by the corresponding reduced diameter part, and the outer dimensions of the guide head are designed to pass through the corresponding reduced diameter part and be blocked by the corresponding sealing sleeve.

[0024] The guide head is designed to push the sealing sleeve to slide under external force, thereby exposing the opening of the memory compartment.

[0025] The memory recovery device according to the second aspect of this application further includes a float, which is made of a hollow structure and / or a lightweight material to increase the buoyancy of the memory recovery device, enabling the memory recovery device to float in the drilling fluid.

[0026] According to the memory recovery apparatus of the second aspect of this application, the float includes a hollow structure for containing gas.

[0027] The memory recycling device according to the second aspect of this application further includes an elastic element, one end of which is fixedly connected to the sliding part, and the other end of which is fixed to the slide bar shaft. The elastic element can be compressed under the action of an external force, causing the sliding part and the guide head to move away from each other, thereby opening the internal compartment. When the external force is removed, the elastic element rebounds, thereby closing the internal compartment.

[0028] According to the memory recovery device of the second aspect of this application, the slide shaft extends into the interior of the retrieval chamber and is fixedly connected to the guide head, and the elastic element extends around the slide shaft.

[0029] According to the memory recycling apparatus of the second aspect of this application, the internal compartment is provided with a magnetic material for magnetically adsorbing the memory into the internal compartment when the internal compartment is opened and the memory is released into the internal cavity.

[0030] According to the memory recovery device of the second aspect of this application, the retrieval chamber is provided with a flow channel, which is configured as an axial groove or through hole to allow drilling fluid to flow through the memory recovery device.

[0031] According to the memory recycling apparatus of the second aspect of this application, the diameter of the through hole is smaller than the size of the memory, so that the memory cannot pass through the through hole.

[0032] A third aspect of this application provides a drilling data transmission system, comprising:

[0033] The drilling data transmission apparatus according to the first aspect of this application; and

[0034] The memory recycling apparatus according to the second aspect of this application.

[0035] A fourth aspect of this application provides a method for use with the drilling data transmission apparatus described in the first aspect, comprising:

[0036] Receive information from a displacement sensor to determine whether the sealing sleeve has moved; and

[0037] In response to the movement of the sealing sleeve, the power supply to the memory circuit board is disconnected.

[0038] The method according to the fourth aspect of this application further includes:

[0039] Determine whether the memory has been successfully captured; and

[0040] In response to the successful capture of the memory, the surface controller is notified to stop pumping drilling fluid.

[0041] The fifth aspect of this application provides a method for use with the memory recycling apparatus described in the second aspect, comprising:

[0042] In response to the memory recovery device having entered the drill string, during the memory recovery operation, it is determined whether the pump pressure of the ground circulation pump has increased to a certain threshold.

[0043] In response to the pump pressure increasing to a certain threshold, a time period is started, the time period being the time required for the memory retrieval device to successfully capture the memory; and

[0044] In response to the expiration of the stated time period, pumping of drilling fluid is stopped.

[0045] A sixth aspect of this application provides a controller, comprising:

[0046] processor, and

[0047] A computer-readable storage medium including a computer program stored thereon, the computer program including executable instructions that, when executed by the processor, implement the methods according to the fourth and fifth aspects of this application.

[0048] A seventh aspect of this application provides a machine-readable storage medium including a computer program stored thereon, the computer program including executable instructions that, when executed by a processor, implement the methods described in the fourth and fifth aspects of this application.

[0049] An eighth aspect of this application provides a computer program product including executable instructions that, when executed by a processor, implement the methods described in the fourth and fifth aspects of this application.

[0050] Based on the above description of the invention, this application provides a drilling data transmission device, system, and method, which can achieve at least one of the following advantages:

[0051] Enhance the transmission capability of large amounts of data generated by downhole high-precision imaging and other measurement-while-drilling tools, and achieve lossless transmission of large amounts of downhole measurement data;

[0052] Multiple data exchanges are enabled. Each different inner diameter of the downhole drill collar can be transmitted once, thus allowing for multiple acquisitions of downhole measurement data while drilling, which increases the instrument's usage time, measurement time, and data transmission volume.

[0053] Even in the event of lost circulation, a recovery device can be obtained within the drill string, allowing drilling data to be transmitted to the surface and the downhole condition to be analyzed, providing drilling guidance.

[0054] The use of a sealing sleeve to seal the storage compartment and displacement detection to shut off the power ensures the safety of downhole data storage during operation, while also protecting the safety of downhole equipment.

[0055] The memory uses a flexible connection mechanism (such as elastic contacts) within the memory compartment, which ensures the stability of the connection and increases the reliability of the memory being ejected from the memory compartment when released because there are no plugs.

[0056] One end face of the memory uses a permanent magnet encapsulation method, which can effectively attract it into the salvage container, increasing the reliability of memory recovery;

[0057] The memory compartments near different diameter sections can store data from different sources or at different times, and can selectively release memory storing different data as needed (e.g., by selecting the external dimensions of the retrieval compartment of the memory recovery device), thereby increasing the variety of data measured. Attached Figure Description

[0058] The accompanying drawings illustrate various examples of aspects of this disclosure, and together with the specification, serve to explain the principles of this disclosure. Those skilled in the art will understand that the specific embodiments shown in the drawings are merely exemplary and are not intended to limit the scope of this disclosure. It should be appreciated that in some examples, one element may also be designed as multiple elements, or multiple elements may also be designed as one element. In some examples, an element shown as an internal component of another element may also be implemented as an external component of that other element, and vice versa. In the drawings:

[0059] Figure 1 shows a cross-sectional view of a measurement-while-drilling tool 100 according to an embodiment of the present disclosure;

[0060] Figure 2 shows a detailed schematic diagram of the memory compartment 200 according to an embodiment of this application;

[0061] Figure 3 shows an example structure of the sealing sleeve 108 according to an embodiment of this application;

[0062] Figures 4A-4D show the structure and state diagram of the memory recycling apparatus according to an embodiment of this application;

[0063] Figures 5A-5B illustrate working diagrams of memory downhole recovery according to embodiments of this application;

[0064] Figure 6 illustrates a flowchart of a data transmission method according to an embodiment of this application; and

[0065] Figure 7 illustrates a controller according to an embodiment of this application. Detailed Implementation

[0066] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings and examples. Those skilled in the art will then fully understand how the present invention uses technical means to solve technical problems and achieve technical effects, and will be able to implement the present invention specifically based on the above-described implementation process. It should be noted that, as long as there is no conflict, the various embodiments and features of the present invention can be combined with each other, and the resulting technical solutions are all within the protection scope of the present invention.

[0067] Although the flowchart describes the operations as sequential processes, many of these operations can be performed in parallel, concurrently, or simultaneously. The order of the operations can be rearranged. A process can terminate when its operation is complete, but it may also have additional steps not included in the diagram. A process can correspond to a method, function, procedure, subroutine, subroutine, etc.

[0068] The terms “first,” “second,” etc., may be used herein to describe various units, but these units should not be limited by these terms. Their use is merely to distinguish one unit from another and does not indicate quantity or value. The term “and / or” as used herein includes any and all combinations of one or more of the listed associated items. When a unit is referred to as “connected” or “coupled” to another unit, it may be directly connected or coupled to said other unit, or there may be intermediate units present.

[0069] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments. It should be understood that the terms "comprising" and / or "including" as used herein specify the presence of the stated features, integers, steps, operations, units, and / or components, without excluding the presence or addition of one or more other features, integers, steps, operations, units, components, and / or combinations thereof.

[0070] In addition, those skilled in the art should understand that the memory in this application is not limited to the memory that stores LWD measurement data, but also includes a tracer that stores MWD (Measurement While Drilling) data and other memories that store other data and transmit them by releasing them into the well.

[0071] The structural components, connection methods, and functional principles of the system according to embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Although the logical order of each operation is shown in the description of the system's structural operation, in some cases, the operations shown or described may be performed in a different order than that shown here.

[0072] Figure 1 is a cross-sectional view of a measurement-while-drilling (MWD) tool 100 according to an embodiment of the present disclosure. The MWD tool can be a drill collar, a measurement sub, or any other suitable downhole MWD tool, and can be arranged as at least part of a drilling data transmission device. For ease of description, a drill collar is used as an example below, but those skilled in the art will understand that it is not limited thereto. As shown in Figure 1, the drill collar 100 includes a storage compartment 200, a sealing sleeve 108, and a reduced-diameter section 120. The storage compartment 200, the sealing sleeve 108, and the reduced-diameter section 120 are arranged along the inner wall of the drill collar cavity. The reduced-diameter section gradually reduces or steps down the inner diameter of the drill collar cavity to form a shoulder structure. The end with the larger inner diameter of the reduced-diameter section 120 can be called the near-surface end (meaning the end closer to the surface during drilling), and the end with the smaller inner diameter can be called the far-surface end (meaning the end farther from the surface during drilling). The sealing sleeve 108 is disposed near (or adjacent to) the reduced diameter section 120 and extends away from the ground from a position near the reduced diameter section 120, i.e., on the side where the inner diameter of the reduced diameter section decreases, extending along the cavity where the inner diameter decreases after the reduced diameter section 120, for example, starting from the edge or lower edge of the reduced diameter section (or at a certain distance from the edge or lower edge of the reduced diameter section) and extending downhole (when the drill collar 100 is downhole). In other words, one end of the sealing sleeve 108 is set as the far end near the reduced diameter section 120 and extends gradually away from the far end along the inner wall of the drill collar cavity (i.e., the drilling fluid passage). In other words, one end of the sealing sleeve 108 is close to the reduced diameter section, and the other end is away from the reduced diameter section, extending longitudinally along the inner wall of the drill collar cavity. The storage compartment 200 is disposed in the inner wall of the drill collar cavity, and the opening of the storage compartment 200 is covered and sealed by the sealing sleeve 108. The sealing sleeve 108 can slide along the inner wall of the drill collar cavity between a first position and a second position, thereby covering and sealing the opening of the memory compartment 200 at the first position, and exposing the opening of the memory compartment 200 at the second position, thereby releasing the memory in the memory compartment 200. Additionally, the drill collar 100 may also include a data acquisition and communication circuit compartment 101, a sensor and power circuit compartment 102, an auxiliary wire passage compartment 104, an auxiliary wire passage and debugging interface compartment 105, an internal wire connection hole 103, an external wire hole 107, and a high-voltage sealing pin 106. The drill collar cavity can be made of, for example, a non-magnetic material, i.e., one that will not attract magnetic materials, such as magnets.

[0073] As shown in Figure 1, the internal cavity of the drill collar (i.e., the drilling fluid channel) can have multiple reduced diameter sections 120, thus forming multiple different inner diameters. A corresponding sealing sleeve 108 and one or more memory storage chambers 200 are provided in conjunction with each reduced diameter section 120. A corresponding sealing sleeve 108 is provided next to each reduced diameter section 120 for sealing and opening the memory storage chamber 200. The sealing mechanism of the sealing sleeve 108 is achieved by, for example, a sliding sealing ring mounting groove. For example, the internal cavity of the drill collar may include three reduced diameter sections 120 (e.g., arranged sequentially), which can be referred to as the first reduced diameter section, the second reduced diameter section, and the third reduced diameter section, respectively, causing the inner diameter of the drill collar cavity to decrease sequentially. A first sealing sleeve 108 and a first memory storage compartment 200 are provided at the distal end of the first reduced-diameter section; a second sealing sleeve 108 and a second memory storage compartment 200 are provided at the distal end of the second reduced-diameter section; and a third sealing sleeve 108 and a third memory storage compartment 200 are provided at the distal end of the third reduced-diameter section. The first sealing sleeve 108 can be disposed between the first and second reduced-diameter sections, the second sealing sleeve 108 can be disposed between the second and third reduced-diameter sections, and so on. Similarly, two, four, or more reduced-diameter sections can be provided.

[0074] The data acquisition and communication circuit compartment 101 houses the data acquisition circuit and the data communication circuit. The data acquisition circuit collects values ​​from various sensors installed inside the drill collar 100. The data communication circuit receives data from external LWD or other measuring tools connected through the external wire hole 107, acquires data from the data acquisition card, and transmits the acquired data to the memory inside the memory compartment 200. It performs data erasure and data writing on the memory, enabling the memory to store downhole measurement or acquired data.

[0075] The sensor and power circuit compartment 102 houses the detection sensors, power supply, and control circuitry. Different detection sensors can be installed depending on the application scenario. The power supply powers all devices. The control circuitry is used for power control, data acquisition and measurement, and data processing. When the measurement-while-drilling tool is in data acquisition and data storage operation, the control circuitry controls the power supply to power all devices, such as the memory in the memory compartment. When the memory compartment 200 is about to release the memory (e.g., when the sealing sleeve 108 begins to slide), the controller controls the power supply to de-energize the memory circuit board, thereby de-energizing the memory and preventing drilling fluid from entering the memory compartment during memory release and causing a short circuit.

[0076] Cables are arranged inside the internal wire connection hole 103 for connecting the various modules inside the drill collar. High-pressure sealing pins 106 are installed inside the internal wire connection hole to prevent drilling fluid from entering the internal circuit space through the internal memory storage compartment 200 after the internal memory storage compartment 200 is opened. That is, each high-pressure sealing pin 106 isolates the memory storage compartment 200 from internal circuits, power supplies, and other circuits or circuit installation spaces. In addition, the high-pressure sealing pins 106 also isolate the internal space of the drill collar from the external space to prevent drilling fluid from entering the internal space of the drill collar through the external wire connection hole 107.

[0077] The auxiliary wire guide compartment 104 and the auxiliary wire guide and debugging interface compartment 105 are used for intermediate wire connections. Specifically, since the memory storage compartment 200, located in different positions within the drill collar, is far from the data acquisition and communication circuit compartment 101, it is impossible to directly machine a wire guide hole to connect the two parts. Therefore, the auxiliary wire guide compartment 104 and the auxiliary wire guide and debugging interface compartment 105 are provided to form easily machined wire guide holes. The auxiliary wire guide and debugging interface compartment 105 houses a debugging board used to download setting data before the instrument operates, connect the power supply to ensure maximum battery operating time, etc.

[0078] The external lead hole 107 allows the device to connect to other compatible detection sections, in addition to the data measured by the drill collar's own sensors, for acquiring and receiving data from these other sections. A high-pressure sealing pin 106 is also installed inside the external lead hole 107 to prevent circuit problems caused by liquid intrusion.

[0079] It should be understood that the interconnections and positions of the data acquisition and communication circuit compartment 101, sensor and power circuit compartment 102, auxiliary wire passage compartment 104, auxiliary wire passage and debugging interface compartment 105, internal wire connection hole 103, external wire hole 107, and high-pressure sealing pin 106 shown in Figure 1 are merely for illustrative purposes. Their interconnections are not limited to those shown in the figure, and they can be located anywhere within the drill collar, as long as they can achieve the functions of the embodiments of this disclosure.

[0080] Referring now to Figure 2, a detailed schematic diagram of the memory compartment 200 according to an embodiment of this application is shown. As shown in Figure 2, the memory compartment 200 is disposed on the inner wall of the drill collar 100 cavity, for example, embedded in the inner wall of the cavity. A sealing cover plate 2001 is provided on the side of the memory compartment 200 away from the inner wall of the drill collar cavity (which may be referred to as the bottom of the memory compartment 200) to seal the memory compartment. The memory compartment 200 includes a memory circuit board 2002 for providing circuit connection and data communication for the memory 2004. The memory circuit board 2002 is connected to the data communication circuit, for example, through an internal wire connection hole 103 (see Figure 1). A mounting hole 2003 is provided on the memory circuit board 2002 for mounting the memory circuit board. The memory 2004 is installed inside the sealed memory compartment 200 and is used to store drilling measurement data or other data. The memory 2004 receives and stores various acquired data and data acquired from other independent measurement subs via the data communication circuit and the memory circuit board 2002. The bottom of the memory 2004 has multiple contacts for connection with the resilient contacts 2006, thereby enabling power supply and / or data communication.

[0081] The elastic contact 2006 is a flexible connection structure (e.g., a spring with double-joint movement). The bottom of the elastic contact 2006 is connected to the memory circuit board 2002, and the top of the elastic contact 2006 has a flexible contact that connects to the memory 2004. Multiple elastic contacts 2006 can both supply power to the memory chip and provide data communication connections. Furthermore, the elastic contact 2006 can provide elastic force to the memory 2004 to cause the memory 2004 to abut against the sealing sleeve 108. After the sealing sleeve 108 slides and opens the opening of the memory compartment 200, the elastic force of the elastic contact 2006 causes the memory 2004 to be ejected from the memory compartment 200, thereby entering the cavity of the drill collar 100. Inside the drill collar cavity, the memory will be captured by a retrieval tool (e.g., a memory retrieval float, see Figure 4). Alternatively, other alternative resilient mechanisms may be provided within the memory compartment 200 for ejecting the memory 2004 from the memory compartment 200 after the opening of the memory compartment 200 is opened, and the memory compartment 200 may also include an additional cover plate located between the memory 2004 and the sealing sleeve.

[0082] Furthermore, the storage chamber 200 also includes a displacement sensor 2005, which can be connected to the storage circuit board 2002 via a wire 2008 to detect the amount and direction of movement of the sealing sleeve 108 (e.g., sliding sleeve 1083, see Figure 3). When the displacement sensor 2005 detects that the sealing sleeve 108 is moving downwards (i.e., moving towards the bottom of the well), it indicates that the sealing sleeve 108 has slid under the action of an external force (e.g., under the action of a fishing tool, a storage recovery device, or a storage recovery float), and will open the opening of the storage chamber 200, thereby releasing the storage 2004 into the cavity. At this time, the displacement sensor 2005 provides the detected information to the controller via the storage circuit board 2002. In response to receiving this information, the controller disconnects the power supply to the storage circuit board to prevent drilling fluid from entering the storage chamber 200 and causing circuit failure. Alternatively, the displacement sensor 2005 may not be located in the memory compartment 200. It can be located anywhere within the drill collar cavity, as long as it can detect the movement of the sealing sleeve 108 and transmit the detected movement signal to the controller.

[0083] In a further embodiment, a permanent magnet 2007 or magnetic material, such as a sheet-like permanent magnet, may be disposed on the memory, preferably on the top of the memory 2004. As described above, the drill collar 100 (or the inner wall of the drill collar) is made of a non-magnetic material, so the permanent magnet 2007 on the memory will not form a magnetic effect with the drill collar and other components, that is, it will not be attracted to the drill collar, and the non-magnetic material of the drill collar 100 can internally house a sensor for measuring magnetic signal data. After the memory is released from the opening of the memory compartment 200 into the cavity of the drill collar 100, it will be captured by a memory retrieval device (e.g., a memory retrieval float, see Figure 4). The retrieval device is internally provided with a magnetically inductive metal, so after the memory 2004 is released from the memory compartment 200 and enters the memory retrieval device, the memory 2004 will be attracted to the retrieval device by the permanent magnet 2007 on the memory, for example, attracted to its iron inner shaft, thereby increasing the success rate of retrieval. Alternatively, a ferromagnetic material can be disposed on the memory, and a permanent magnet can be disposed within the memory recycling device, thereby achieving mutual attraction. Further alternatively, both the memory and the memory recycling device can include permanent magnets, thereby achieving mutual attraction. Further still, the permanent magnet or ferromagnetic material in this application can be replaced by an electromagnet or other materials capable of mutual attraction.

[0084] Referring to Figure 3, an example structure of the sealing sleeve 108 according to an embodiment of this application is shown. The sealing sleeve 108 includes a fixed sleeve 1082 and a sliding sleeve 1083. The fixed sleeve 1082 can be an outer sleeve, and the sliding sleeve 1083 can be an inner sleeve. Alternatively, the fixed sleeve 1082 can be an inner sleeve, and the sliding sleeve 1083 can be an outer sleeve. For the sake of simplicity, the following description uses the fixed sleeve 1082 as the outer sleeve and the sliding sleeve 1083 as the inner sleeve as an example. Those skilled in the art should understand that the inner and outer relationship between them is not fixed and may not exist. The outer sleeve 1082 can be fixedly installed on the inner wall of the drill collar 100 cavity, thereby supporting the sealing sleeve 108 to prevent displacement inside the cavity. The inner sleeve 1083 can slide relative to the outer sleeve 1082, preferably sliding within the outer sleeve 1082. The sliding stroke of the inner sleeve 1083 is sufficient to fully open the opening of the memory compartment 200, thereby releasing the memory, while avoiding excessive sliding stroke. A spring 1084 is installed inside the outer sleeve and abuts against the inner sleeve 1083, providing support for the inner sleeve. When no external force is applied (e.g., when the memory retrieval device does not apply external force to the inner sleeve 1083 of the sealing sleeve 108), the spring 1084 abuts against the inner sleeve 1083, causing the opening of the memory compartment 200 to be covered and sealed by the inner sleeve. When an external force is applied, the spring 1084 contracts, causing the inner sleeve 1083 to slide open the opening of the memory compartment 200. When the memory is released and the memory retrieval action is completed, the external force is removed, and the spring 1084 pushes the inner sleeve 1083 back to its original sealed state, ensuring the instrument's operational status. The sealing sleeve 108 may also include a sliding seal ring mounting groove 1081, in which a sealing O-ring is installed to seal the opening of the storage chamber 200, preventing drilling fluid in the tubing from entering the storage chamber 200 (see Figures 1-2). The sealing sleeve 108 may also include, for example, an embedded groove 1085, which is a tooling groove. After the drill collar has completed all its work, the tooling for removing the sealing sleeve can be locked in the embedded groove 1085, allowing the sealing sleeve 108 to be removed for maintenance and replacement to ensure normal use.

[0085] Those skilled in the art will understand that the fixed sleeve 1082 may simply be a fixed structure on the inner wall of the tube or the inner wall of the tube itself, used to fix the spring 1084 and allow the spring 1084 to support the sliding sleeve 1083.

[0086] Referring next to Figures 4A-4D, which illustrate the structure and state of a memory retrieval device 300 (e.g., a memory retrieval float or a salvage tool) according to an embodiment of this application. As shown in Figures 4A and 4B, the memory retrieval device 300 includes an elastic element 3001, a float 3002, a salvage chamber 3003, and a sliding shaft 3004. One end of the elastic element 3001 is fixedly connected to the bottom of the salvage chamber 3003. The elastic element 3001 can be compressed under external force, causing the salvage chamber 3003 to open (see Figure 4B), and when the external force is removed, the elastic element 3001 rebounds, thereby closing the salvage chamber 3003 (see Figure 4A). The elastic element 3001 can be a spring, with one end fixed to the bottom of the salvage chamber 3003 and the other end fixed to the sliding shaft 3004. As shown, the elastic element 3001 can be disposed around the sliding shaft 3004. The slide bar shaft 3004 is connected to the retrieval chamber 3003 and extends into the interior of the retrieval chamber 3003. Alternatively, the other end of the elastic element 3001 can also be fixed to the float 3002 or other components of the memory recovery device 300. The float 3002 can be located at one end of, for example, the memory recovery device 300. The float 3002 can be a hollow structure and / or made of lightweight materials to increase the buoyancy of the memory recovery device 300, allowing the memory recovery device 300 to rise quickly in the drilling fluid. In one embodiment, the float 3002 is a flexible inflatable float that can be filled with low-density gas to increase buoyancy, accelerate the return speed, and also adapt to the terrain deformation according to the bending shape of the drill string, making the ascent smoother.

[0087] In a preferred example, as shown in FIG4A, the elastic element 3001 and the sliding shaft 3004 are disposed between the float 3002 and the salvage compartment 3003, and the sliding shaft 3004 connects the float 3002 and the salvage compartment 3003. However, those skilled in the art will understand that their positional relationship is not limited to this.

[0088] Figure 4C shows a schematic diagram of a salvage compartment 3003 according to an embodiment of this application. The salvage compartment 3003 is composed of a sliding part 30031, a guide head 30032, and an internal sliding shaft 30033, wherein the internal sliding shaft 30033 is the portion of the sliding shaft 3004 that extends into the salvage compartment 3003; therefore, the internal sliding shaft 30033 can be directly referred to as the sliding shaft 3004 in some cases. The sliding part 30031 is located at the bottom of the salvage compartment 3003, and the guide head 30032 is located at the top of the salvage compartment 3003. The sliding part 30031 and the guide head 30032 can be brought close together to form an internal compartment, or they can be moved away from each other to open the internal compartment. For example, on the side where the sliding part 30031 and the guide head 30032 face each other, either or both may include a recessed structure such that when the sliding part 30031 and the guide head 30032 approach and engage, their respective recessed structures form an inner compartment or at least a portion of the inner compartment. The bottom of the sliding part 30031 is connected to the elastic element 3001 (see Figures 4A and 4B) and is able to slide back and forth along the inner slide rod shaft 30033 together with the elastic element, thereby moving closer to or away from the guide head 30032. The guide head 30032 is fixedly connected to the inner slide rod shaft 30033, or the inner slide rod shaft 30033 supports the guide head 30032. Magnetic material (e.g., permanent magnet, electromagnet, or ferromagnetic material such as pure iron) is provided on at least one of the sliding part 30031, the guide head 30032, and the internal slide shaft 30033 to magnetically attract the memory into the internal compartment, for example, to the internal slide shaft 30033, thereby increasing retrieval efficiency. The guide head 30032 can be designed to pass through the corresponding reduced diameter part 120 and be blocked by the sealing sleeve 108 (see Figure 1). Specifically, the guide head 30032 is blocked by the sliding sleeve 1083 corresponding to the sealing sleeve 108, for example, it abuts against the sliding sleeve 1083 and cannot pass through the corresponding sliding sleeve 1083. Under the action of external force, the guide head 30032 can advance and push the sliding sleeve 1083 to slide. The sliding portion 30031 of the salvage compartment 3003 is designed to be blocked by the corresponding reduced diameter portion 120, for example, by being stuck or abutting against the corresponding reduced diameter portion 120. As described above, in the case of multiple reduced diameter portions 120, each reduced diameter portion 120 has a sealing sleeve 108, a memory storage compartment 200, and a salvage compartment 3003 (or memory retrieval device 300) corresponding to it in size and / or position.

[0089] In a further preferred embodiment, longitudinal or axial grooves may be provided on the outer periphery of the sliding portion 30031 and the guide head 30032 of the fishing container 3003 for drilling fluid to pass through. For example, when the sliding portion 30031 of the fishing container 3003 contacts and is blocked by the reduced diameter portion 120, its axial groove still allows drilling fluid to pass through, thereby forming a drilling fluid channel. Alternatively, through-hole structures may be provided on the sliding portion 30031 and the guide head 30032 of the fishing container 3003, functioning similarly to axial grooves, for allowing drilling fluid to pass through. Furthermore, the axial groove and through-hole receiving may be selectively provided on the sliding portion 30031 and the guide head 30032. For example, an axial groove may be provided on one of the sliding portion 30031 and the guide head 30032, and a through-hole structure may be provided on the other, for allowing drilling fluid to pass through even when the sliding portion 30031 contacts and is blocked by the reduced diameter portion 120. The sliding part 30031 slides under the push of the drilling fluid, thereby opening the retrieval compartment 3003. The drilling fluid channels formed by the aforementioned through holes and / or axial grooves can be collectively referred to as flow channels. The flow channels allow drilling fluid to flow, pushing the memory recovery device. When the sliding part 30031 contacts and is blocked by the reduced diameter part 120, it pushes the sliding part 30031 to slide, and the guide head 30032 applies a thrust to the sealing sleeve, pushing the sealing sleeve to slide, allowing the memory to pop out.

[0090] Furthermore, as shown in Figure 4D, a through-hole structure is provided on the retrieval chamber 3003. If the through-holes formed on the sliding part 30031 and / or the guide head 30032 communicate with the internal chamber of the retrieval chamber 3003, then the diameter of the through-holes is preferably smaller than the size of the memory to prevent the memory from being lost from the retrieval chamber 3003. In addition, besides driving the movement of the various components of the retrieval chamber as described above, the flow channel can reduce sudden and significant increases in pump pressure (e.g., when the sliding part 30031 contacts and is blocked by the narrowed diameter part 120), and can achieve drilling fluid circulation through the flow channel, increasing the feasibility of on-site operations.

[0091] The working principle of the memory retrieval device 300 in capturing the memory 2004 from the drill collar 100 is as follows: The memory retrieval device 300, including a retrieval chamber 3003 of a specific external dimension, is lowered into the drill string along with the drilling fluid. Driven by the drilling fluid, it reaches the corresponding reduced-diameter section 120 and the corresponding sealing sleeve 108 in the drill collar 100. Then, the retrieval chamber 3003 of the memory retrieval device 300 approaches the reduced-diameter section under the pressure of the pumped drilling fluid. Under the pumping pressure, the sliding part 30031 of the retrieval chamber 3003 is blocked or stuck at the reduced-diameter section 120, and the guide head 30032 passes through the reduced-diameter section 120 and is blocked or stuck by the sliding sleeve 1083 of the sealing sleeve 108. Under the flow pressure of the pumped drilling fluid through the flow channel, the elastic element 3001 on the storage recovery device 300 is compressed, causing the sliding part 30031 to slide along the slide rod shaft 3004, and causing the guide head 30032 to continue to advance, pressing down and sliding the sliding sleeve 1083 of the sealing sleeve 108. The sliding of the sliding sleeve 1083 will open the opening of the storage sealing chamber 200, and at the same time, the retrieval chamber 3003 will also open when the elastic element 3001 is compressed (see Figure 4B). The retrieval chamber 3003 captures the storage 2004 released from the storage sealing chamber 200 by, for example, magnetic force. Through magnetic force, the storage 2004 is attracted into the retrieval chamber 3003. Then, the drilling fluid circulation is stopped or the drilling fluid flow rate is reduced, so that the drilling fluid pressure decreases or disappears. Therefore, the elastic element 3001 of the storage recovery device 300 recovers, and the retrieval chamber 3003 closes. Then, the memory retrieval device 300 returns to the ground under the action of buoyancy, thereby retrieving the data memory in the instrument and reading out the data for application.

[0092] As mentioned above, multiple reduced-diameter sections 120 and corresponding sealing sleeves 108 can be provided in the cavity of the drill collar 100. Different reduced-diameter sections and corresponding sealing sleeves 108 have different dimensions, thus corresponding to memory retrieval devices 300 with different external dimensions (correspondingly, to retrieval containers 3003 with different external dimensions). A memory retrieval device 300 with a retrieval container 3003 of a specific external dimension can be selected according to site requirements, thereby enabling the retrieval of specific memory.

[0093] Figures 5A-5B show schematic diagrams of downhole memory retrieval according to embodiments of this application. Figure 5A shows the initial state of downhole memory retrieval. At this time, the memory retrieval device 300, corresponding to the external dimensions, circulates within the drill string to the inner diameter of the drill collar to be retrieved (e.g., the third reduced diameter section). The sliding part 30031 of the retrieval chamber 3003 is engaged or abutted against the reduced diameter section and fixed in place by the pumping drilling fluid. Meanwhile, the guide head 30032 passes through the reduced diameter section and is engaged or abutted against the sealing sleeve 108. As the drilling fluid pump operates, pressure is generated on the storage recovery device 300, pushing the float 3002, slide bar 3004, and guide head 30032 downwards. The guide head 30032 then pushes open the sliding sleeve 1083 of the sealing sleeve 108, opening the storage chamber 200. At the same time, the retrieval chamber 3003 is opened, at which point the storage 2004 pops out from the storage chamber 200 and is attracted to the slide bar 3004 by a permanent magnet 2007 embedded in the storage 2004, forming the state shown in Figure 5B.

[0094] After stopping drilling fluid circulation or reducing drilling fluid flow rate to reduce or eliminate drilling fluid pressure, the memory recovery device 300 closes the retrieval chamber 300 with the elastic element 3001, recovering the memory 2004. The memory recovery device 300 moves towards the ground under the buoyancy of the float 3002, eventually recovering the memory to the ground for further work such as data reading and processing.

[0095] Because the drill collar body 100 can be equipped with multiple different reduced-diameter sections and corresponding sealing sleeves 108, the device of this application can perform multiple memory releases and data exchanges, thereby improving the instrument's operating time and data transmission capabilities. This results in better application capabilities and value at the drilling site. Furthermore, the memory compartments near different reduced-diameter sections can store data from different sources or at different times, and the memory storing different data can be selectively released as needed (e.g., by selecting the external dimensions of the retrieval compartment 300 of the memory retrieval device 300), increasing the types and capacity of data measurements and extending downhole working time.

[0096] In addition, the memory can be recovered inside the drill string, and the memory can be reliably ejected and adsorbed into the salvage compartment, ensuring the recovery of the memory.

[0097] Referring now to Figure 6, a flowchart of a data transmission method according to an embodiment of this application is shown. The method begins at step 600. At this point, the memory retrieval device 300 has entered the drill string, and the drilling pump is pumping drilling fluid. Then, at step 602, the controller can determine whether the memory storage compartment is about to open. In this step, the controller can receive information from a displacement sensor (e.g., 2005 in Figure 2) and determine whether the memory storage compartment is about to open based on the received information. Specifically, the displacement sensor can sense whether the sliding sleeve 1083 (see Figures 2 and 3) has moved and / or its direction of movement. For example, if the information from the displacement sensor indicates that the sliding sleeve 1083 has moved and / or its direction of movement (e.g., moving towards the bottom of the well), it means that the sliding sleeve 1083 has begun to slide under the action of the memory retrieval device 300, the memory storage compartment is about to open, and the memory will be released from the memory compartment. Then the method proceeds to step 604. If the information from the displacement sensor does not indicate any movement, the information from the displacement sensor continues to be monitored. At step 604, the controller disconnects the power supply to the memory circuit board based on the information from the displacement sensor. In a further embodiment, the displacement sensor can still function normally even after the power supply to the memory circuit board is disconnected. The displacement sensor can record the downward (towards the bottom of the well) movement distance of the sliding sleeve 1083 so as to determine later whether the memory storage compartment is fully opened to release the memory.

[0098] Then, the method proceeds to step 606, determining that the memory retrieval device has successfully captured the memory. There are several ways to determine if the memory retrieval device has successfully captured the memory. If the downhole controller has a communication coupling link with the EMWD (Electromagnetic Measurement While Drilling) tool, allowing communication with the surface, a communication transmission method can be used. Specifically, after determining in step 602 that the memory storage compartment is about to open, the controller can start a timer to determine if a time period has expired. This time period is the time required from the detection of displacement information to the successful capture of the memory by the memory retrieval device. If the timer has not expired, it continues timing. If the timer has expired, it proves that the memory has been successfully captured. At this time, the controller transmits this information of successful memory capture to the second controller on the surface in real time via the communication coupling link with the EMWD tool, enabling the second controller on the surface to receive this message. Alternatively, the message that the memory storage compartment is about to open (i.e., information from the displacement sensor) can also be transmitted to the second controller on the surface via the communication coupling link, and then the second controller starts a timer to determine if the aforementioned time period has expired, thereby determining that the memory retrieval device has successfully captured the memory.

[0099] Alternatively, if the downhole controller lacks a communication link with the EMWD (Early Motion While Drilling) tool, i.e., there is no method for real-time communication with the surface, a pressure method can be used. In this method, when the memory retrieval device entering the drill string reaches the narrowing section, the pump pressure increases due to partial blockage of the internal passages. Once the pump pressure reaches a certain threshold, it indicates that the memory retrieval device is stuck or abutting the narrowing section and is about to begin retrieval. This threshold can be determined experimentally in advance. In response to the pump pressure increasing to a certain value, a second controller on the surface can start timing for a period of time, which is the time required for the memory retrieval device to successfully capture the memory. If the timer has not yet expired, it continues timing. If the timer has expired, it indicates that the memory has been successfully captured.

[0100] After confirming successful capture of the memory at step 606, the method proceeds to step 608. In step 608, the second controller stops or reduces the drilling pump power, i.e., stops or reduces drilling fluid pumping, allowing the retrieval chamber of the memory recovery device to close and enabling the memory recovery device to float upwards carrying the captured memory. This completes the memory recovery. Alternatively, those skilled in the art will understand that step 606 can be replaced by other methods, such as generating a trigger signal after the memory is adsorbed onto the retrieval chamber of the memory recovery device to confirm successful capture. After transmitting the trigger signal to the second controller on the ground, the method proceeds to step 608. Furthermore, after stopping or reducing drilling fluid pumping in step 608, the pressure is eliminated or reduced, the external force applied to the sliding sleeve 1083 of the sealing sleeve begins to disappear, and the sliding sleeve 1083 returns to the position of the sealed memory storage chamber under elastic force. The displacement memory can record the displacement of the sliding sleeve 1083 to determine whether the memory storage chamber has returned to a sealed state.

[0101] Those skilled in the art will understand that the order of the method steps in Figure 6 may not necessarily follow the order shown in the figures, and some steps may even be performed simultaneously, or some steps may be removed or merged, as long as they do not conflict with the technical problem to be solved by the present disclosure.

[0102] Referring now to FIG. 7, a controller 700 according to an embodiment of the present disclosure is illustrated. This controller may be the controller used in FIG. 6, a second controller located on the ground, and / or the controller mentioned in FIG. 1, or a combination of these controllers, which may be distributed across multiple locations. The controller includes a processor 701, a memory 702, and an interface 703. The processor 701 performs encoding or decoding operations by executing computer-executable instructions that define at least a portion of the methods shown in FIG. 6. A computer program product including the computer-executable instructions may be stored in the memory 702. At least a portion of the methods described in FIG. 6, including data acquisition, data writing, data erasure, and data reading, may be defined by the computer-executable instructions included in the computer program product stored in the memory 702 and controlled by the processor 701 executing these computer-executable instructions. The interface 703 may include a data communication interface definition and an instruction interaction interface definition, enabling data and instruction interaction with acquisition circuits, memory circuits, and instrument controls for other LWD / MWD data and instrument data acquisition. The network interface is used to communicate with other devices via a network. This interface may also include other input / output devices (e.g., a display, keyboard, mouse, speaker, buttons, touchpad, touchscreen, etc.) that enable a user to interact with the controller 700. Those skilled in the art will recognize that actual controller implementations may also include other components, and Figure 7 is a high-level representation of some components of such a controller for illustrative purposes. The memory 702 includes tangible, non-transitory machine-readable storage media and may also include high-speed random access memory, such as dynamic random access memory (DRAM), static random access memory (SRAM), double data rate synchronous dynamic random access memory (DDR RAM), or other random access solid-state memory devices. It may also include non-volatile memory, such as one or more disk storage devices (e.g., internal hard disks and removable disks), magneto-optical disk storage devices, optical disk storage devices, flash memory devices, semiconductor memory devices (e.g., erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM)), compact disc read-only memory (CD-ROM), digital versatile disc read-only memory (DVD-ROM), or other non-volatile solid-state storage devices.

[0103] It should be recognized that certain features of this disclosure described in the context of individual embodiments for clarity may also be provided in combination in individual embodiments. Conversely, various features of this disclosure described in the context of individual embodiments for simplicity may also be provided individually or in any suitable sub-combination or appropriately in any other embodiments of this disclosure. Certain features described in the context of various embodiments should not be considered essential features of those embodiments unless the embodiment is invalid without those elements.

[0104] While this disclosure has been described in conjunction with specific embodiments thereof, it will be apparent to those skilled in the art that many substitutions, modifications, and alterations will be readily apparent. Therefore, it is intended to cover all such substitutions, modifications, and alterations that fall within the spirit and broad scope of the appended claims.

[0105] All publications, patents, and patent applications mentioned in this description are incorporated herein by reference in their entirety, to the extent that each individual publication, patent, or patent application is specifically and particularly indicated to be incorporated herein by reference. Furthermore, any reference or identification in this disclosure should not be construed as allowing such reference to be used as prior art in this disclosure. Where paragraph headings are used, they should not be construed as necessarily restrictive.

Claims

1. A drilling data transmission device, comprising an internal cavity and a storage compartment, a sealing sleeve, and a reduced-diameter section arranged along the internal cavity. The reduced diameter section is configured to reduce the inner diameter of the internal lumen; The sealing sleeve is positioned on one side of the reduced diameter portion and extends along the inner cavity where the inner diameter decreases. The storage compartment is used to house a storage device for storing drilling data, and the storage compartment includes an opening; The sealing sleeve is configured to slide along the inner wall of the internal cavity between a first position and a second position, thereby covering the opening of the memory compartment at the first position and exposing the opening of the memory compartment at the second position to allow the memory in the memory compartment to be released into the internal cavity.

2. The drilling data transmission device according to claim 1, wherein the reduced diameter section gradually or stepwise reduces the inner diameter of the internal cavity to form a shoulder structure, and the sealing sleeve extends along the internal cavity after the reduced diameter section where the inner diameter decreases.

3. The drilling data transmission device according to claim 1, wherein the internal cavity is made of a non-magnetic material.

4. The drilling data transmission device according to claim 1, wherein the memory compartment includes a memory circuit board for providing circuit connection and data communication for the memory, and the memory compartment further includes an elastic mechanism for ejecting the memory from the memory compartment after the opening of the memory compartment is opened.

5. The drilling data transmission device according to claim 4, wherein the elastic mechanism is an elastic connection mechanism, one end of the elastic connection mechanism is connected to the memory circuit board, and the other end of the elastic connection mechanism is connected to the memory, thereby supplying power to the memory and / or providing data communication.

6. The drilling data transmission apparatus according to any one of claims 1-5 further includes a displacement sensor and a controller, the displacement sensor being used to detect movement of the sealing sleeve, and the controller being configured to disconnect power to the memory circuit board in response to movement of the sealing sleeve.

7. The drilling data transmission device according to any one of claims 1-5, wherein the memory is provided with a magnetic material.

8. The drilling data transmission device according to any one of claims 1-5 further includes a sealing pin to prevent drilling fluid from entering the internal circuit space.

9. The drilling data transmission device according to any one of claims 1-5, wherein the sealing sleeve comprises a fixed portion, a sliding sleeve, and a spring, the fixed portion being configured to be fixedly mounted on the internal cavity, one end of the spring being configured to be mounted to the fixed portion, and the other end of the spring being configured to be mounted to the sliding sleeve, such that the sliding sleeve is configured to push the spring to contract under the action of an external force, thereby enabling the sliding sleeve to slide relative to the fixed portion, thereby exposing the opening of the memory compartment to release the memory.

10. The drilling data transmission device according to claim 9, wherein the fixed part is an outer sliding sleeve, the sliding sleeve is an inner sliding sleeve, and the spring is fixed inside the outer sliding sleeve and abuts against the inner sliding sleeve, so that the inner sliding sleeve slides back and forth inside the outer sliding sleeve.

11. The drilling data transmission device according to any one of claims 1-5, wherein the reduced diameter section includes a plurality of reduced diameter sections, each of which is provided with a corresponding sealing sleeve and a storage compartment nearby, the plurality of reduced diameter sections being arranged sequentially such that the inner diameter of the internal cavity decreases sequentially.

12. A memory retrieval device for retrieving a memory from a drilling data transmission device according to any one of claims 1-11, the memory retrieval device comprising a retrieval chamber and a slide bar shaft, the retrieval chamber comprising a sliding portion and a guide head, the sliding portion and the guide head being designed to engage with each other to form an inner chamber for capturing and accommodating the memory; The sliding part is configured to move along the slide bar axis to approach or move away from the guide head; The outer dimensions of the sliding part are designed to be blocked by the corresponding reduced diameter part, and the outer dimensions of the guide head are designed to pass through the corresponding reduced diameter part and be blocked by the corresponding sealing sleeve. The guide head is designed to push the sealing sleeve to slide under external force, thereby exposing the opening of the memory compartment.

13. The memory recycling device according to claim 12 further includes a float, the float being a hollow structure and / or made of a lightweight material.

14. The memory recovery device according to claim 13, wherein the float comprises a hollow structure for containing gas.

15. The memory recycling apparatus according to any one of claims 12-14 further includes an elastic element, one end of which is fixedly connected to the sliding portion and the other end of which is fixed to a slide bar shaft. The elastic element is configured to be compressible under external force to move the sliding portion and the guide head away from each other, thereby opening the internal compartment, and to rebound when the external force is removed, thereby closing the internal compartment.

16. The memory recovery device according to any one of claims 12-14, wherein the slide shaft extends into the interior of the retrieval chamber and is fixedly connected to the guide head, and the elastic element extends around the slide shaft.

17. The memory recycling device according to any one of claims 12-14, wherein the internal compartment is provided with a magnetic material for magnetically adsorbing the memory into the internal compartment.

18. The memory recovery device according to any one of claims 12-14, wherein the retrieval chamber is provided with an overflow channel, the overflow channel being configured as an axial groove or a through hole.

19. The memory recycling apparatus of claim 18, wherein the diameter of the through hole is smaller than the size of the memory, such that the memory cannot pass through the through hole.

20. A method for use with the drilling data transmission apparatus according to any one of claims 1-11, comprising: Receive information from a displacement sensor to determine whether the sealing sleeve has moved; as well as In response to the movement of the sealing sleeve, the power supply to the memory circuit board is disconnected.

21. The method of claim 20, further comprising: Determine whether the memory has been successfully captured; as well as In response to the successful capture of the memory, the surface controller is notified to stop or reduce drilling fluid pumping.

22. A method for use with the memory recycling apparatus according to any one of claims 12-19, comprising: In response to the memory recovery device having entered the drill string, during the memory recovery operation, it is determined whether the pump pressure of the ground circulation pump has increased to a certain threshold. In response to the pump pressure increasing to a certain threshold, a time period is started, the time period being the time required for the memory retrieval device to successfully capture the memory; and In response to the expiration of the stated time period, drilling fluid pumping is stopped or reduced.

23. A controller, comprising: processor, and A computer-readable storage medium comprising a computer program stored thereon, the computer program including executable instructions that, when executed by the processor, implement the method according to any one of claims 20-22.

24. A machine-readable storage medium comprising a computer program stored thereon, the computer program including executable instructions that, when executed by a processor, implement the method according to any one of claims 20-22.

25. A computer program product comprising executable instructions that, when executed by a processor, implement the method according to any one of claims 20-22.

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