CN111577262A - Underground storage direct-reading device - Google Patents

Abstract

The invention discloses a downhole storage direct-reading device, which comprises an industrial personal computer, a cable, a ground well logging system, a sleeve inserted into the ground, a logging instrument positioned in the sleeve, a storage direct-reading dual-mode well logging device and a crawler, wherein the storage direct-reading dual-mode well logging device acquires well logging data measured by the logging instrument and stores the well logging data measured by the logging instrument, or sends the well logging data measured by the logging instrument to the ground well logging system through the cable, the output end of the ground well logging system is connected with the input end of the industrial personal computer, the logging instrument and the storage direct-reading dual-mode well logging device are positioned at the lower end of the crawler, and the device can log when an instrument string is in a power-off state and simultaneously overcomes the problem that the existing crawler cannot log when crawling.

Description

Underground storage direct-reading device

Technical Field

The invention belongs to the field of petroleum exploration logging, and relates to a downhole storage direct-reading device.

Background

At present, the horizontal well logging at home and abroad mainly uses a crawler as a pushing tool, and the instrument is lifted up for logging after being sent to a target depth. When the instrument enters a highly-inclined well section, the crawler starts to work, and at the moment, the instrument string carried by the crawler is in a power-off state, so that well logging cannot be performed. But the flow measurement principle needs to be measured in the process of putting the instrument into the horizontal section, flow data when the instrument is put down is obtained so as to improve the test precision, and meanwhile, the downward measurement can also reduce the crawling times and improve the construction efficiency.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a downhole storage direct-reading device which can perform well logging in two states of ground power supply and power failure and simultaneously overcome the problem that the conventional crawler cannot perform downward logging during crawling.

In order to achieve the purpose, the underground storage direct-reading device comprises an industrial personal computer, a cable, a ground well logging system, a sleeve inserted into the ground, a well logging instrument positioned in the sleeve, a storage direct-reading dual-mode well logging device and a crawler, wherein the storage direct-reading dual-mode well logging device acquires well logging data measured by the well logging instrument and then stores the well logging data measured by the well logging instrument underground or sends the well logging data to the ground well logging system through the cable, the output end of the ground well logging system is connected with the input end of the industrial personal computer, and the well logging instrument and the storage direct-reading dual-mode well logging device are positioned at the lower end of the crawler.

The storage direct-reading dual-mode logging device comprises a storage electronic circuit, a direct-reading electronic circuit and a battery assembly for providing electric energy.

The storage electronic circuit is used for detecting the voltage on the cable, when the voltage on the cable is larger than a set value, the logging data measured by the logging instrument are sent to a ground logging system through the cable, and when the voltage on the cable is smaller than or equal to the set value, the logging data measured by the logging instrument are stored.

The invention has the following beneficial effects:

the underground storage direct-reading device adopts two working modes of storage and direct-reading during specific operation, when the underground storage direct-reading device works normally, the storage direct-reading dual-mode logging device is used for acquiring logging data measured by a logging instrument, the acquired logging data is sent to a ground logging system through a cable, and after an upstream instrument is powered off, the storage direct-reading dual-mode logging device is used for storing the logging data measured by the logging instrument, so that one-time conveying of a crawler is realized, data processing of two different working modes is realized, the problem that most creepers in the prior art cannot carry out down logging during crawling is solved, the underground storage direct-reading device is very suitable for the actual condition of the creepers in the industry, the cost is relatively low, and the underground storage direct-reading device has a good practical prospect.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural diagram of a storage direct-reading dual-mode logging apparatus 2 according to the present invention.

The system comprises alogging instrument 1, a storage direct-reading dual-mode logging device 2, acable 3, acasing 4, a ground logging system 5, an industrial personal computer 6, a direct-reading electronic circuit 7, a battery assembly 8, a storageelectronic circuit 9 and a crawler 10.

Detailed Description

The invention is described in further detail below with reference to the accompanying drawings:

referring to fig. 1 and 2, the downhole storage direct-reading device of the present invention includes an industrial personal computer 6, acable 3, a ground logging system 5, acasing 4 inserted underground, alogging instrument 1 positioned in thecasing 4, a storage direct-reading dual-mode logging device 2, and a crawler 10, wherein the storage direct-reading dual-mode logging device 2 obtains logging data measured by thelogging instrument 1, and then stores the logging data measured by thelogging instrument 1, or sends the logging data measured by thelogging instrument 1 to the ground logging system 5 through thecable 3, an output end of the ground logging system 5 is connected with an input end of the industrial personal computer 6, and thelogging instrument 1 and the storage direct-reading logging device 2 are positioned on the crawler 10.

The storage direct-reading dual-mode logging device 2 comprises a storageelectronic circuit 9, a direct-reading electronic circuit 7 and a battery assembly 8 for providing electric energy, wherein the storageelectronic circuit 9 is used for detecting positive and negative voltages on thecable 3, when the voltage on thecable 3 is larger than a set value, logging data measured by thelogging instrument 1 are sent to the ground logging system 5 through thecable 3, and when the voltage on thecable 3 is smaller than or equal to the set value, the logging data measured by thelogging instrument 1 are stored. The direct-reading electronic circuit 7 comprises a switching power supply circuit, a cable bus signal processing circuit, an instrument bus signal circuit and a signal coding/decoding circuit which are connected in sequence.

The data acquisition of the invention uses a mode of combining a direct-reading transmission mode and a storage mode, so that the direct-reading well logging can be carried out on a matched underground instrument under the condition of direct-reading conditions, the well logging data can be stored under the condition that the instrument does not have the direct-reading conditions, more instrument strings are obtained in the well logging process, the crawling conveying frequency is reduced by 50% under the condition of obtaining the same amount of data, and the production efficiency is greatly improved.

While the invention has been described in further detail with reference to specific preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (3)

1. The utility model provides a save direct reading device in pit, a serial communication port, including industrial computer (6), cable (3), ground well logging system (5), insert in sleeve pipe (4) of underground and be located well logging instrument (1) of sleeve pipe (4), save direct reading bimodulus well logging device (2) and crawler (10), wherein, save direct reading bimodulus well logging device (2) and obtain the logging data that well logging instrument (1) measured, again to the logging data of well logging instrument (1) measurement save, perhaps send the data that well logging instrument (1) measured to ground well logging system (5) in through cable (3), the output of ground well logging system (5) is connected with the input of industrial computer (6), logging instrument (1) and save direct reading bimodulus well logging device (2) and be located crawler (10).

2. A downhole storage and direct reading apparatus according to claim 1, wherein the storage and direct reading dual mode logging apparatus (2) comprises storage electronics (9), direct reading electronics (7) and a battery assembly (8) for providing electrical energy.

3. A downhole storage read-through device according to claim 1, wherein the storage electronics (9) is adapted to detect the voltage on the wireline (3), and to send data measured by the logging unit (1) to the surface logging system (5) via the wireline (3) when the voltage on the wireline (3) is higher than a set value, and to store data measured by the logging unit (1) in the downhole electronics when the voltage on the wireline (3) is lower than or equal to the set value.

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