Direct push storage type logging real-time monitoring method and system

Abstract

The invention discloses a direct-push storage type logging real-time monitoring method and system, and the method comprises the steps: enabling a direct-push storage type logging instrument and an MWD system downhole instrument to be matched and connected according to an operation specification, configuring the working parameters and decoding function of an MWD ground collection system, and setting the delay working time of the direct-push storage type logging instrument; the direct-push storage type logging instrument is lowered along with the drill rod, and the direct-push storage type logging instrument is started for monitoring according to the lowering time and the delay starting time; the direct-push storage type logging instrument uploads measured data to the MWD ground acquisition system through a mud pulse circulation signal, the MWD ground acquisition system uploads the measured data to the system workstation to display the measured data in real time, and the working condition of the instrument is monitored in real time. The problem of'blind measurement 'pain points of current direct push storage type well logging is solved, and the efficiency of direct push type well logging operation is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of well logging in petroleum exploration and development, and in particular relates to a direct-push storage well logging real-time monitoring method and system. Background Art

[0002] Traditional open hole logging uses cables to connect instruments. The logging instrument string is lowered along the wellbore to a specified formation depth, and then the instrument is pulled upward. Formation information is collected during the instrument lifting process. The cable not only provides power for the instrument lifting process, but also serves as a communication medium for real-time transmission of instrument collected data.

[0003] However, with the increasing use of high-angle well and horizontal well drilling technologies in oil and gas exploration and development, the post-drilling cable logging construction method makes it difficult to lower the logging instrument into the well and there are great operational risks. Therefore, the direct push storage logging construction process in which the logging instrument is directly connected to the drill pipe is adopted to solve the above logging problem. Since the logging instrument is directly connected to the drill pipe, it is impossible to upload the measurement data in real time during the current direct push storage logging process. The quality of the logging data and whether the instrument is working properly can only be analyzed after the instrument is brought to the ground to read the memory data. After going down the well, it is in a "blind test" state. Whether the downhole instrument is working and how the working status is cannot be known during the measurement process. The working status of the instrument and the logging construction plan cannot be adjusted in time, which affects the logging timeliness.

[0004] Therefore, it is particularly important to provide a real-time monitoring method and supporting tools suitable for direct push storage logging. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a direct push storage logging real-time monitoring method and system in view of the deficiencies in the above-mentioned prior art, which is used to solve the technical problem that the quality of the measurement data can only be analyzed blindly after the direct push storage logging construction is completed. The working status parameters of the instrument can be obtained in real time during the direct push storage logging process, which provides a reliable basis for adjusting the instrument working parameters and optimizing the logging construction plan, thereby improving the timeliness of the logging operation.

[0006] The present invention adopts the following technical solutions:

[0007] A direct push storage logging real-time monitoring method comprises the following steps:

[0008] S1. Connect the direct-push storage logging instrument with the MWD system downhole instrument according to the operating specifications, configure the working parameters and decoding function of the MWD surface acquisition system, and set the delayed working time of the direct-push storage logging instrument;

[0009] S2, lowering the direct-push storage logging instrument together with the drill pipe, and starting the direct-push storage logging instrument for monitoring according to the lowering time and delayed start time;

[0010] S3, direct push storage logging instrument uploads the measurement data to the MWD ground acquisition system through the mud pulse circulation signal, and then uploads the measurement data to the system workstation through the MWD ground acquisition system to display the measurement data in real time and monitor the working condition of the instrument in real time.

[0011] Specifically, in step S1, the MWD system downhole instrument is arranged inside the outer collar, the direct push storage logging instrument is connected to the lower end of the outer collar through the drill pipe conversion nipple and the double male nipple, and the upper end of the outer collar is connected to the drill pipe through the suspension nipple.

[0012] Specifically, in step S2, when the lowering time is greater than the delayed start time, the direct-push storage logging instrument starts logging monitoring.

[0013] Specifically, in step S3, when the measurement data meets the constraint conditions, the logging state is maintained until all logging operations in the process of lowering and lifting the instrument are completed.

[0014] Specifically, in step S3, when the measured data does not meet the constraint conditions, the direct-push storage logging instrument is powered on again to start logging, and the number of power-on times N=N+1 is recorded; when the number of power-on times N does not exceed the maximum number of power-on times N0, it returns to the logging monitoring state to continue monitoring and the instrument is powered on again.

[0015] Further, when the power-on times N exceeds the specified maximum power-on times N0, the direct-push storage logging instrument is repaired, and the logging process is restarted after the direct-push storage logging instrument returns to a normal state.

[0016] Specifically, in step S3, the measurement data includes the working status Tool_Status of the direct-push storage logging instrument, the working voltage V / current I of the direct-push storage logging instrument, and the tensile pressure TTen of the direct-push storage logging instrument.

[0017] Furthermore, the working status Tool_Status of the direct-push storage logging tool is:

[0018] Tool_Status=1

[0019] The working voltage V of direct push storage logging instrument is:

[0020] V min <V<V max

[0021] The working current I of the direct-push storage logging instrument is:

[0022] I min <I<Imax

[0023] The tensile pressure TTen of direct push storage logging tool is:

[0024] TTen min <TTen<TTen max

[0025] Among them, V min , V max For voltages at the specified minimum and maximum values, I min , I max For currents at the specified minimum and maximum values, TTen min ,TTen max The tensile pressure is between the specified minimum and maximum values.

[0026] Another technical solution of the present invention is a direct-push storage logging real-time monitoring system, which utilizes a direct-push storage logging real-time monitoring method, including a ground decoding box, which is connected to a well site sensor to form an MWD ground acquisition system, and the MWD ground acquisition system is connected to a direct-push storage logging instrument and an MWD system downhole instrument, and a mud pressure pulse signal is generated by a downhole pulser, and the signal is transmitted to a system workstation through mud circulation.

[0027] Specifically, the direct-push storage logging instrument is connected to the lower end of the outer collar through the drill pipe conversion short section and the double male short section in sequence, the upper end of the outer collar is connected to the drill pipe through the suspension short section, and the MWD system downhole instrument is arranged inside the outer collar.

[0028] Compared with the prior art, the present invention has at least the following beneficial effects:

[0029] A direct-push storage logging real-time monitoring method uploads the working status parameters of the downhole logging instrument in real time to judge whether the instrument is working normally, solves the "blind measurement" problem of the direct-push storage logging construction method, and improves the logging timeliness.

[0030] Furthermore, the MWD is located on the upper part of the direct-push storage logging instrument, which can make the logging instrument closer to the drill bit on the one hand, and ensure that the MWD signal transmission process is less disturbed on the other hand.

[0031] Furthermore, if the monitored measurement data meets the set constraint conditions, the logging operation state of the downhole instrument can be maintained until all logging operations are completed, thereby ensuring that reliable logging data is obtained.

[0032] Furthermore, by recording the relationship between the number of power-on times and the set maximum number of power-on times, it is possible to promptly determine whether the instrument can resume normal working conditions underground, thereby reducing the ineffective working time of the instrument underground.

[0033] Furthermore, if the recorded power-on times are greater than the set maximum power-on times, the instrument needs to be promptly lifted to the surface, inspected and repaired, and then lowered into the well for logging operations again after restoration to normal status, thereby ensuring that the logging instrument always maintains normal working status during underground operations.

[0034] Furthermore, through the working status Tool_Status, working voltage V / current I and tension pressure TTen of the direct-push storage logging instrument, it is possible to intuitively judge whether the downhole logging instrument is in normal working condition, thereby ensuring the logging timeliness and safe construction.

[0035] A direct-push storage logging real-time monitoring system adds an MWD system to the original direct-push storage logging system to achieve real-time ground monitoring of the instrument's working status, instrument voltage / current, and instrument tension and pressure information. It can determine the working status of the direct-push instrument underground in real time, changing the current situation in which direct-push storage logging operations can only be known after drilling is started whether data has been collected and whether the instrument is working normally. It solves the current pain point of "blind testing" in direct-push storage logging and improves the timeliness of direct-push well logging operations.

[0036] In summary, the present invention solves the pain point problem of "blind testing" in direct push storage logging and can effectively improve the logging timeliness.

[0037] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 The monitoring system block diagram of the present invention;

[0039] Figure 2 It is a schematic diagram of the structure of the downhole instrument of the present invention;

[0040] Figure 3 This is a flow chart of the monitoring method of the present invention;

[0041] Figure 4 Real-time monitoring data graph.

[0042] Among them, 1. Ground decoding box; 2. Well site sensor; 21. First sensor; 22. Second sensor; 23. Third sensor; 3. System workstation; 4. MWD ground acquisition system; 5. Direct push storage logging instrument; 51. Outer collar; 52. Suspension short section; 53. Drill pipe; 54. Outer collar; 55. Outer collar; 6. MWD system downhole instrument. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "one side", "one end", "one side" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0047] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0048] It should be further understood that the term "and / or" used in the present description and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0049] Various structural schematic diagrams of the embodiments disclosed in the present invention are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0050] See also Figure 1 The present invention provides a direct-push storage logging real-time monitoring system, which is divided into two parts: a ground acquisition system and a downhole instrument. The information transmission between the ground system and the downhole instrument is achieved by generating a mud pressure pulse signal through a downhole pulser, and transmitting the signal through mud circulation.

[0051] The ground system includes: a system workstation 3 and an MWD ground acquisition system 4;

[0052] The downhole instruments include: a direct-push storage logging instrument 5 and an MWD system downhole instrument 6 . The direct-push storage logging instrument 5 is arranged at the front end of the MWD system downhole instrument 6 . The MWD system downhole instrument 6 is connected to the system workstation 3 through the MWD surface acquisition system 4 .

[0053] The directional probe is a part of the downhole instrument 6 of the MWD system, which can provide the inclination and azimuth information of the downhole wellbore, and can be combined with the direct-push storage logging instrument 5 to measure different downhole parameter information.

[0054] The MWD ground acquisition system 4 includes a ground decoding box 1 and a well site sensor 2. The ground software realizes the directional probe parameter configuration and mud pulse decoding functions, and issues data upload instructions to realize that the instrument status, instrument current / voltage, and instrument tension pressure of the MWD system downhole instrument 6 in the well are uploaded to the ground through the mud by the probe control pulser, and are processed by the ground decoding box 1 and transmitted to the system workstation 3 for display. According to the displayed working parameters of the direct-push storage logging instrument 5, it is judged whether the instrument is working normally. If it is normal, the logging continues. If it is not normal, an instruction is issued to adjust the instrument working status to check whether the displayed instrument parameters have returned to normal. If the instrument is still in an abnormal state after adjustment, the direct-push storage logging instrument is promptly pulled up to the ground for replacement and re-lowered for measurement, thereby realizing the real-time monitoring function of direct-push storage logging.

[0055] The well site sensor 2 includes a first sensor 21, a second sensor 22 and a third sensor 23, which are used to obtain depth, mud pressure and hook load data respectively.

[0056] See also Figure 2 The MWD system downhole instrument 6 is arranged inside the outer collar 51. One end of the outer collar 51 is provided with a suspension nipple 52 and a drill pipe 53, and the other end is provided with a double male nipple 54 and a drill pipe conversion nipple 55. The direct-push storage logging instrument 5 is matched with the outer collar 51 through the drill pipe conversion nipple 55 and the double male nipple 54. The upper end of the outer collar 51 is connected to the suspension nipple 52, and the suspension nipple 52 is connected to the drill pipe 53.

[0057] The MWD system downhole instrument 6 includes: a pulser, a flow switch, a conversion joint, a battery, a signal transmission nipple, etc. Through the above mechanical structure connection, the direct-push storage logging instrument 5 and the MWD system downhole instrument 6 are matched.

[0058] See also Figure 3 The present invention provides a direct push storage logging real-time monitoring method, comprising the following steps:

[0059] S1. Connect the direct-push storage logging instrument 5 and the MWD system downhole instrument 6 on the ground according to the operating specifications, configure the working parameters and decoding function of the MWD ground acquisition system 4, and set the delayed working time of the direct-push storage logging instrument 5;

[0060] The MWD system downhole instrument 6 is arranged inside the outer collar 51 . The direct-push storage logging instrument 5 is matched with the outer collar 51 through the drill pipe conversion short section 55 and the double male short section 54 . The upper end of the outer collar 51 is connected to the suspension short section 52 , and the suspension short section 52 is connected to the drill pipe 53 .

[0061] S2, lowering the direct-push storage logging instrument 5 along with the drilling rod 53, and when the lowering time is greater than the delayed start time, the direct-push storage logging instrument 5 starts logging monitoring;

[0062] S3, the MWD surface acquisition system 4 issues a command to upload the measurement data of the direct push storage logging instrument 5, and uploads the measurement data to the system workstation 3 through the mud pulse circulation signal to display the measurement data in real time and monitor the working condition of the instrument in real time.

[0063] The basic data monitored include:

[0064] Direct-push storage logging instrument working status Tool_Status, direct-push storage logging instrument working voltage V / current I and direct-push storage logging instrument tensile pressure TTen. The above parameters must meet the following conditions:

[0065] Tool_Status=1 (1)

[0066] The voltage is within the specified minimum and maximum ranges as follows:

[0067] V min <V<V max (2)

[0068] The current is within the specified minimum and maximum values ​​as follows:

[0069] I min <I<I max (3)

[0070] The tensile pressure is within the specified minimum and maximum values ​​as follows:

[0071] TTen min <TTen<TTen max (4)

[0072] Among them, Tool Status =0 means not working, Tool Status =1 means working.

[0073] S301, if the working state Tool_Status of the direct-push storage logging instrument, the working voltage V / current I of the direct-push storage logging instrument, and the tensile pressure TTen of the direct-push storage logging instrument all meet the constraint conditions, then the logging state is maintained until all logging operations in the process of lowering and lifting the instrument are completed;

[0074] S302, if one of the parameters of the direct-push storage logging instrument working status Tool_Status, the direct-push storage logging instrument working voltage V / current I and the direct-push storage logging instrument tensile pressure TTen does not meet the constraint condition, the MWD surface acquisition system 4 issues an instruction, the direct-push storage logging instrument 5 is powered on again to start logging, and the number of power-on times N=N+1 is recorded;

[0075] When the number of power-on times N exceeds the specified maximum number of power-on times N0, the direct-push storage logging instrument 5 is lifted to the wellhead for troubleshooting and repair, and the above logging process is repeated after the direct-push storage logging instrument 5 returns to normal;

[0076] When the power-on times N does not exceed the maximum power-on times N0, the instrument returns to the logging monitoring state to continue monitoring and repeatedly power on the instrument.

[0077] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can usually be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0078] See also Figure 4 Through the real-time monitoring data in the figure, it is possible to determine whether the measurement data of the logging instrument is within the set effective measurement range, identify the working status of the downhole instrument, ensure that the instrument is always in an effective working state downhole, improve the logging timeliness, and ensure the safe construction of the logging operation.

[0079] In summary, the present invention provides a direct-push storage logging real-time monitoring method and system, which adds an MWD system to the original direct-push storage logging system, realizes the real-time ground monitoring function of the instrument working status, instrument voltage / current, and instrument tension and pressure information, and can judge the working status of the direct-push storage logging instrument in the well in real time, changing the current situation in which the direct-push storage logging operation can only know whether data has been collected and whether the instrument is working normally after drilling, solving the current pain point problem of "blind testing" of direct-push storage logging, and improving the timeliness of direct-push storage logging operations.

[0080] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A direct push storage logging real-time monitoring method, characterized in that: The following steps are involved: S1. Connect the direct-push storage logging instrument with the MWD system downhole instrument according to the operating specifications, configure the working parameters and decoding function of the MWD surface acquisition system, and set the delayed working time of the direct-push storage logging instrument; S2, lowering the direct-push storage logging instrument together with the drill pipe, and starting the direct-push storage logging instrument for monitoring according to the lowering time and delayed start time; S3, direct push storage logging instrument uploads the measurement data to the MWD ground acquisition system through the mud pulse circulation signal, and then uploads the measurement data to the system workstation through the MWD ground acquisition system to display the measurement data in real time and monitor the working condition of the instrument in real time.

2. The direct push storage logging real-time monitoring method according to claim 1, characterized in that: In step S1, the MWD system downhole instrument is arranged inside the outer collar, the direct push storage logging instrument is connected to the lower end of the outer collar through the drill pipe conversion nipple and the double male nipple, and the upper end of the outer collar is connected to the drill pipe through the suspension nipple.

3. The direct push storage logging real-time monitoring method according to claim 1 is characterized in that: In step S2, when the lowering time is greater than the delayed start time, the direct-push storage logging instrument starts logging monitoring.

4. The direct push storage logging real-time monitoring method according to claim 1, characterized in that: In step S3, when the measurement data meets the constraint conditions, the logging state is maintained until all logging operations in the process of lowering and lifting the instrument are completed.

5. The direct push storage logging real-time monitoring method according to claim 1, characterized in that: In step S3, when the measured data does not meet the constraint condition, the direct push storage logging instrument is powered on again to start logging, and the number of power-on times N=N+1 is recorded; When the power-on times N does not exceed the maximum power-on times N0, the instrument returns to the logging monitoring state to continue monitoring and repeatedly powers on the instrument.

6. The direct push storage logging real-time monitoring method according to claim 5, characterized in that: When the number of power-on times N exceeds the specified maximum number of power-on times N0, the direct-push storage logging instrument is overhauled, and the logging process is restarted after the direct-push storage logging instrument returns to a normal state.

7. The direct push storage logging real-time monitoring method according to claim 1, characterized in that: In step S3, the measurement data includes the working status Tool_Status of the direct-push storage logging instrument, the working voltage V / current I of the direct-push storage logging instrument, and the tensile pressure TTen of the direct-push storage logging instrument.

8. The direct push storage logging real-time monitoring method according to claim 7, characterized in that: The working status Tool_Status of the direct push storage logging tool is: Tool_Status=1 The working voltage V of direct push storage logging instrument is: In min <V<V max The working current I of the direct-push storage logging instrument is: I min <I<I max The tensile pressure TTen of direct push storage logging tool is: TTen min <TTen<TTen max Among them, V min , V max For voltages at the specified minimum and maximum values, I min , I max For currents at the specified minimum and maximum values, TTen min ,TTen max The tensile pressure is between the specified minimum and maximum values.

9. A direct push storage logging real-time monitoring system, characterized in that: The direct-push storage logging real-time monitoring method according to claim 1 comprises a ground decoding box (1), the ground decoding box (1) is connected to a well site sensor (2) to form an MWD ground acquisition system (4), the MWD ground acquisition system (4) is connected to a direct-push storage logging instrument (5) and an MWD system downhole instrument (6), a mud pressure pulse signal is generated by a downhole pulser, and the signal is transmitted to a system workstation (3) through mud circulation.

10. The direct push storage logging real-time monitoring system according to claim 9, characterized in that: The direct-push storage logging instrument (5) is connected to the lower end of the outer collar (51) through a drill pipe conversion short section (55) and a double male short section (54) in sequence, and the upper end of the outer collar (51) is connected to the drill pipe (53) through a suspension short section (52). The MWD system downhole instrument (6) is arranged inside the outer collar (51).

Images