阅读说明：本技术 存储式测井仪 (Storage type logging instrument ) 是由 温世波 陈树博 张峰 于 2020-06-17 设计创作，主要内容包括：本发明公开了一种存储式测井仪。该测井仪包括发射电路、接收电路和仪器主体,该仪器主体包括发射晶体、至少一个第一接收晶体和至少一个第二接收晶体；该发射电路与所述发射晶体电连接,并能够驱动发射晶体发射探测信号；该接收电路包括第一接收电路和第二接收电路,其中,第一接收电路与第一接收晶体电连接,并采集第一接收晶体接收的测井信号并进行存储；第二接收电路与第二接收晶体电连接,并采集第二接收晶体接收的测井信号并进行存储。本发明实施例能够提高存储式测井仪的运行稳定性和可靠性。(The invention discloses a storage type logging instrument. The logging tool comprises a transmitting circuit, a receiving circuit and a tool body, wherein the tool body comprises a transmitting crystal, at least one first receiving crystal and at least one second receiving crystal; the transmitting circuit is electrically connected with the transmitting crystal and can drive the transmitting crystal to transmit a detection signal; the receiving circuit comprises a first receiving circuit and a second receiving circuit, wherein the first receiving circuit is electrically connected with the first receiving crystal, and is used for collecting and storing the logging signals received by the first receiving crystal; the second receiving circuit is electrically connected with the second receiving crystal and used for collecting and storing the logging signals received by the second receiving crystal. The embodiment of the invention can improve the operation stability and reliability of the storage type logging instrument.)

1. A storage tool, comprising: a transmitting circuit, a receiving circuit and an instrument body;

the instrument body comprises an emission crystal, at least one first receiving crystal and at least one second receiving crystal;

the transmitting circuit is electrically connected with the transmitting crystal; the transmitting circuit is used for driving the transmitting crystal to transmit a detection signal;

the receiving circuit comprises a first receiving circuit and a second receiving circuit; the first receiving circuit is electrically connected with the first receiving crystal; the second receiving circuit is electrically connected with the second receiving crystal; the first receiving circuit is used for collecting and storing the logging signal received by the first receiving crystal; the second receiving circuit is used for collecting and storing the logging signal received by the second receiving crystal.

2. A storage tool according to claim 1, wherein the transmitter circuit is electrically connected to the first and second receiver circuits, respectively;

the transmitting circuit is further used for transmitting a synchronous starting signal to the first receiving circuit and the second receiving circuit, and controlling the first receiving circuit and the second receiving circuit to synchronously acquire and store the logging signals.

3. A storage tool according to claim 1 wherein the first receiving circuit comprises a first differential amplifying circuit, a first filtering circuit and a first data acquisition processor;

the first data acquisition processor, the first filter circuit and the first differential amplification circuit are sequentially connected in series, and the first data acquisition processor is used for acquiring logging signals received by the first receiving crystal after differential amplification is carried out on the logging signals by the first data acquisition processor through the first differential amplification circuit and filtering is carried out on the logging signals by the first filter circuit, and storing the logging signals received by the first receiving crystal;

the second receiving circuit comprises a second differential amplifying circuit, a second filtering circuit and a second data acquisition processor;

the second data acquisition processor, the second filter circuit and the second differential amplification circuit are sequentially connected in series, and the second data acquisition processor is used for acquiring logging signals received by the second receiving crystal after differential amplification is carried out on the logging signals by the second differential amplification circuit and filtering the logging signals by the second filter circuit, and storing the logging signals received by the second receiving crystal.

4. A storage tool as defined in claim 3, wherein the first receiving circuit further comprises a first power module; the first power supply module is used for providing a power supply for the first receiving circuit;

the second receiving circuit further comprises a second power supply module; the second power supply module is used for providing a power supply for the second receiving circuit.

5. A storage tool according to claim 1, further comprising: a transmit circuit housing and a receive circuit housing;

the transmitting circuit is arranged in the transmitting circuit shell, and the receiving circuit is arranged in the receiving circuit shell; and the transmitting circuit shell and the receiving circuit shell are not contacted with each other.

6. A storage tool according to claim 5 wherein the transmit circuit housing is secured to one end of the tool body and the receive circuit housing is secured to the other end of the tool body.

7. A storage tool according to claim 1 wherein the transmitting crystal, each of the first receiving crystals and each of the second receiving crystals are arranged in sequence along a first direction;

the distance between two adjacent first receiving crystals, the distance between two adjacent second receiving crystals and the distance between the adjacent first receiving crystals and the adjacent second receiving crystals are the same.

8. A storage tool as defined in claim 7, wherein the distance between each of the second receiving crystals and the transmitting crystal is greater than the distance between each of the first receiving crystals and the transmitting crystal.

9. A storage tool according to claim 7 wherein the tool body comprises four of the first receiving crystals and four of the second receiving crystals.

Technical Field

The embodiment of the invention relates to the technical field of petroleum instruments, in particular to a storage type logging instrument.

Background

The tool can be used to detect subsurface reservoir conditions and geological conditions to analyze the feasibility of oil recovery in the area.

Currently, logging instruments are classified into two categories, a cable logging instrument and a storage logging instrument. The storage logging instrument is generally provided with an instrument main body, a transmitting circuit and a receiving circuit; the transmitting crystal and the receiving crystal are arranged in the instrument main body, the transmitting circuit can control the transmitting crystal to transmit a detection signal, the receiving circuit can collect a logging signal received by the receiving crystal and store the logging signal, and after logging construction is finished, data in an instrument memory are read out through special logging data interpretation software.

However, when the storage type logging instrument encounters complicated well conditions, the probe bladder for receiving signals is easily damaged, so that the corresponding receiving circuit is also damaged, thereby affecting the operation stability and reliability of the storage type logging instrument.

Disclosure of Invention

In view of this, the present invention provides a storage logging tool, in which a transmitting circuit and two receiving circuits are respectively disposed at two ends of a tool body, so as to implement dual storage and dual backup functions.

The embodiment of the invention provides a storage type logging instrument, which comprises: a transmitting circuit, a receiving circuit and an instrument body;

wherein the instrument body comprises an emitting crystal, at least one first receiving crystal, and at least one second receiving crystal;

wherein the emission circuit is electrically connected to the emission crystal; the transmitting circuit is used for driving the transmitting crystal to transmit a detection signal;

wherein the receiving circuit comprises a first receiving circuit and a second receiving circuit; the first receiving circuit is electrically connected with the first receiving crystal; the second receiving circuit is electrically connected with the second receiving crystal; the first receiving circuit is used for collecting and storing the logging signal received by the first receiving crystal; the second receiving circuit is used for collecting and storing the logging signal received by the second receiving crystal.

Optionally, the transmitting circuit is electrically connected to the first receiving circuit and the second receiving circuit respectively;

the transmitting circuit is further used for transmitting a synchronous starting signal to the first receiving circuit and the second receiving circuit, and controlling the first receiving circuit and the second receiving circuit to synchronously acquire and store the logging signals.

Optionally, the first receiving circuit includes a first differential amplifying circuit, a first filtering circuit and a first data acquisition processor; the first receiving circuit further comprises a first power supply module; the first power supply module is used for providing a power supply for the first receiving circuit.

Optionally, the first data acquisition processor, the first filter circuit and the first differential amplifier circuit are sequentially connected in series, and the first data acquisition processor is configured to acquire the logging signal received by the first receiving crystal, which is differentially amplified by the first differential amplifier circuit and filtered by the first filter circuit, and store the logging signal received by the first receiving crystal.

Optionally, the second receiving circuit includes a second differential amplifying circuit, a second filtering circuit, and a second data acquisition processor; the second receiving circuit further comprises a second power supply module; the second power supply module is used for providing a power supply for the second receiving circuit.

Optionally, the second data acquisition processor, the second filter circuit and the second differential amplifier circuit are sequentially connected in series, and the second data acquisition processor is configured to acquire the logging signal received by the second receiving crystal, which is differentially amplified by the second differential amplifier circuit and filtered by the second filter circuit, and store the logging signal received by the second receiving crystal.

Optionally, a storage logging tool includes a transmitting circuit housing and a receiving circuit housing; the transmitting circuit is arranged in the transmitting circuit shell, and the receiving circuit is arranged in the receiving circuit shell; and the transmitting circuit shell and the receiving circuit shell are not contacted with each other.

Optionally, the transmitting circuit casing is fixed to one end of the instrument main body, and the receiving circuit casing is fixed to the other end of the instrument main body.

Optionally, the emitting crystal, each of the first receiving crystals, and each of the second receiving crystals are sequentially arranged along a first direction;

the distance between two adjacent first receiving crystals, the distance between two adjacent second receiving crystals and the distance between the adjacent first receiving crystals and the adjacent second receiving crystals are the same.

Optionally, a distance between each second receiving crystal and the emitting crystal is greater than a distance between each first receiving crystal and the emitting crystal.

Optionally, the instrument body includes four first receiving crystals and four second receiving crystals.

The storage type logging instrument provided by the embodiment of the invention is provided with the transmitting circuit for driving the transmitting crystal to transmit the detection signal, and simultaneously is provided with the two receiving circuits, the first receiving circuit is adopted for collecting and storing the logging signal received by the first receiving crystal, the second receiving circuit is adopted for collecting and storing the logging signal received by the second receiving crystal, so that the logging signal is subjected to double backup, and when one receiving circuit or one receiving crystal is damaged, the other receiving circuit and the other receiving crystal are adopted for receiving and storing the logging signal, so that the operation stability and reliability of the storage type logging instrument are improved.

Drawings

FIG. 1 is a block diagram of a memory logging tool according to an embodiment of the present invention;

FIG. 2 is a block diagram of another embodiment of a memory logging tool;

fig. 3 is a block diagram of a receiving circuit in the embodiment of the present invention;

FIG. 4 is a schematic diagram of a memory tool in an embodiment of the invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

The embodiment of the invention provides a storage type logging instrument which can be used for logging during petroleum drilling. Fig. 1 is a block diagram of a memory logging tool according to an embodiment of the present invention, and as shown in fig. 1, the memory logging tool includes a transmitting circuit 10, a tool main body 20, and a receiving circuit 30. An emission crystal 210, a first receiving crystal 220, and a second receiving crystal 230 are provided in the instrument body 20. Wherein, the transmitting circuit 10 is electrically connected with the transmitting crystal 210, and the transmitting circuit 10 can drive the transmitting crystal 210 to transmit a detection signal so as to detect the propagation speed of the sound wave in the stratum; correspondingly, the first receiving crystal 220 and the second receiving crystal 230 can receive logging signals returned from the oil well, and the propagation speed of sound waves in the stratum can be obtained by analyzing and processing the logging signals, so that the stratum porosity and lithology, namely the pore fluid property information, can be determined.

The receiving circuit 30 includes a first receiving circuit 310 and a second receiving circuit 320, the first receiving circuit 310 is electrically connected with the first receiving crystal 220, the second receiving circuit 320 is electrically connected with the second receiving crystal 230; the first receiving circuit 310 can collect logging signals received by the first receiving crystal 220 and store the logging signals collected by the first receiving crystal, the second receiving circuit 320 can collect logging signals received by the second receiving crystal 230 and store the logging signals collected by the second receiving crystal, and the propagation speed of sound waves in the stratum can be obtained by analyzing and processing the logging signals collected and stored by the first receiving circuit 310 and/or the logging signals collected and stored by the second receiving circuit 320, so that the stratum porosity and lithology, namely the pore fluid property information, can be determined.

So, through set up a transmitting circuit in storage formula logging instrument, with drive transmission crystal transmission detecting signal, be provided with two receiving circuit simultaneously, adopt first receiving circuit to gather and save the logging signal that first receiving crystal received, and adopt second receiving circuit to gather and save the logging signal that second receiving crystal received, with carry out double backup to the logging signal, can be when one of them receiving circuit or receiving crystal are impaired, adopt another receiving circuit and receiving crystal to receive, the storage logging signal, thereby improve storage formula logging instrument's operating stability and reliability.

It should be noted that fig. 1 is a structural block diagram of a storage type logging tool provided by an embodiment of the present invention, and the structural block diagram of the real-time embodiment of the present invention only shows a connection relationship between structures in the storage type logging tool, and does not represent a relative position relationship between the structures.

Optionally, fig. 2 is a block diagram of another storage type logging tool according to an embodiment of the present invention. As shown in fig. 2, the transmitting circuit 10 is also electrically connected to the first receiving circuit 310 and the second receiving circuit 320, respectively; the transmitting circuit 10 is further configured to send a synchronization start signal to the first receiving circuit 310 and the second receiving circuit 320, and control the first receiving circuit 310 and the second receiving circuit 320 to synchronously acquire and store logging signals. At this time, the first receiving circuit 310 and the second receiving circuit 320 can start to acquire and store the logging signals synchronously, so as to prevent the logging signals acquired and stored by the two receiving circuits from being inconsistent due to the delay of the start of one receiving circuit; therefore, on the premise that the logging signals acquired and stored by the two receiving circuits are mutually independent, double backup of the logging signals is realized, and the stability and reliability of the storage type logging instrument are further improved.

Optionally, fig. 3 is a block diagram of a receiving circuit according to an embodiment of the present invention. As shown in fig. 3, the first receiving circuit 310 includes a first differential amplifying circuit 311, a first filtering circuit 312 and a first data collecting processor 313, which are connected in series in sequence; the first differential amplification circuit 311 can differentially amplify the collected logging signal received by the first receiving crystal, so that the logging signal can be gained stably, thereby inhibiting drift and common mode interference generated by the logging signal, and eliminating the influence of temperature difference change on elements; for example, an operational amplifier or the like may be provided in the first differential amplifier circuit 311. The first filter circuit 312 can filter and denoise the logging signal subjected to differential amplification by the first differential amplifier circuit 311, so as to prevent the stability and accuracy of the collected logging signal from being insufficient due to signal interference. The first data acquisition processor 313 is capable of acquiring a logging signal, which is in turn differentially amplified by the first differential amplification circuit 311 and filtered by the first filter circuit 312, and storing the logging signal in a corresponding memory. The memory for storing the logging signals may be integrated into the first data acquisition processor 313, or the memory for storing the logging signals may be separately provided and store the logging signals acquired by the first data acquisition processor 313.

Correspondingly, the second receiving circuit 320 includes a second differential amplifying circuit 321, a second filtering circuit 322 and a second data collecting processor 323, which are connected in series; the second differential amplifying circuit 321 can differentially amplify the logging signal received by the second receiving crystal, so that the logging signal can be gained stably, thereby inhibiting drift and common mode interference generated by the logging signal, and eliminating the influence of temperature difference change on elements; for example, an operational amplifier or the like may be provided in the second differential amplifying circuit 321. The second filter circuit 322 can filter and denoise the logging signal entering the second differential amplifier circuit 321 for differential amplification, so as to prevent the stability and accuracy of the collected logging signal from being insufficient due to signal interference. The second data acquisition processor 323 is capable of acquiring a logging signal, which is differentially amplified by the second differential amplifying circuit 321 and filtered by the second filtering circuit 322 in sequence, and storing the logging signal in a corresponding memory. The memory for storing the logging signals may be integrated into the second data acquisition processor 323, or the memory for storing the logging signals may be separately provided and store the logging signals acquired by the second data acquisition processor 323.

Optionally, as shown in fig. 3, a first power supply module 314 is further disposed in the first receiving circuit 310. The first power supply module 314 can provide power for the first receiving circuit 310. This first power module 314 can be the lithium cell for example to set up in storage type logging instrument with the form of well accuse nipple joint, so that storage type logging instrument during operation in measuring the well section, first power module 314 provides power supply for first receiving circuit 310, and cuts off the power supply stop work in all the other times, has improved battery availability, has practiced thrift the quantity of battery, practices thrift the logging cost effectively.

Accordingly, a second power supply module 324 may be disposed in the second receiving circuit 320. The second power supply module 324 can provide power for the second receiving circuit 320. The second power supply module 324 may have the same structure as the first power supply module 314, or the second power supply module 324 may be the same lithium battery as the first power supply module 314. Thus, when the storage logging tool is working in the measurement interval, the second power supply module 324 provides power to the second receiving circuit 320, and the power is cut off to stop working in the rest time, so as to improve the effective utilization rate of the battery, save the usage amount of the battery, and effectively save the logging cost.

Optionally, fig. 4 is a schematic structural diagram of a storage type logging tool according to an embodiment of the present invention. As shown in fig. 4, the storage tool further comprises a transmit circuit housing 101 and a receive circuit housing 301; wherein, the transmitting circuit 10 is arranged in the transmitting circuit casing 101, and the receiving circuit 30 is arranged in the receiving circuit casing 301; and the transmission circuit casing 101 and the reception circuit casing 301 are not in contact with each other. Illustratively, the transmitting circuit casing 101 is fixed to one end of the instrument body, the receiving circuit casing 301 is fixed to the other end of the instrument body, and the transmitting circuit casing and the receiving circuit casing can be respectively connected to the instrument body by a detachable connection structure, a snap, a bolt, or the like.

The transmission circuit casing 101 is used for protecting the transmission circuit 10 disposed therein, and the reception circuit casing 301 is used for protecting the reception circuit 30 disposed therein. When one end of the instrument main body is fixedly connected with the transmitting circuit shell 101 and the other end of the instrument main body is fixedly connected with the receiving circuit shell 301, the reliability and the stability of the whole logging instrument can be improved; the transmitting circuit shell 101 and the receiving circuit shell 301 are not in contact with each other, so that friction generated when the transmitting circuit shell 101 is in contact with the receiving circuit shell 301 can be reduced, the shell is damaged, the transmitting circuit arranged in the transmitting circuit shell 101 and the receiving circuit arranged in the receiving circuit shell 301 are not interfered with each other, and the signal-to-noise ratio of the storage logging instrument is improved.

Therefore, the transmitting circuit shell and the receiving circuit shell are arranged at the two ends of the instrument main body, so that the problem that signals of the transmitting circuit and the receiving circuit interfere with each other is solved, and the signal-to-noise ratio is improved; two receiving circuits are arranged on one side of the instrument main body, when one receiving circuit or the receiving crystal is damaged, the other receiving circuit or the receiving crystal can still receive and store logging signals, the dual-storage dual-backup function is realized, and therefore the operation stability and reliability of the storage type logging instrument are improved.

Optionally, with continued reference to fig. 4, the emitter crystal T1, each of the first receiver crystals (R1-R4), and each of the second receiver crystals (R5-R8) in the instrument body are all arranged in sequence along the first direction; for example, the instrument body may include four first receiving crystals (R1, R2, R3, and R4) and four second receiving crystals (R5, R6, R7, and R8); the distance between two adjacent first receiving crystals, the distance between two adjacent second receiving crystals, and the distance between the adjacent first receiving crystals and the adjacent second receiving crystals are the same. Wherein the distances between the respective second receiving crystals (R5, R6, R7, R8) and the emitter crystal T1 may each be greater than the distance between the respective first receiving crystals (R1, R2, R3, R4) and the emitter crystal T1. The emitting crystal T1 can be made of piezoelectric ceramic material.

Thus, the transmitting crystals, the first receiving crystals and the second receiving crystals are sequentially arranged along the first direction, and the distance between two adjacent first receiving crystals, the distance between two adjacent second receiving crystals and the distance between the adjacent first receiving crystals and the adjacent second receiving crystals are the same, for example, the distance can be 0.5ft, so that the receiving crystals do not interfere with each other when receiving signals, and the final calculation result is more accurate; when the distance between the second receiving crystal and the transmitting crystal is larger than the distance between each first receiving crystal and the transmitting crystal, the first receiving crystal and the second receiving crystal can be adopted to receive logging signals respectively, and mutual interference between the signals is prevented.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.