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CN215369811U - Stratum element saturation measuring instrument - Google Patents

Stratum element saturation measuring instrument Download PDF

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Publication number
CN215369811U
CN215369811U CN202022748932.8U CN202022748932U CN215369811U CN 215369811 U CN215369811 U CN 215369811U CN 202022748932 U CN202022748932 U CN 202022748932U CN 215369811 U CN215369811 U CN 215369811U
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China
Prior art keywords
nipple
detector
measuring instrument
telemetry
gamma
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CN202022748932.8U
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Chinese (zh)
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李康
姚秋华
孙雨蒙
商洪杰
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Xi'an Aohua Electronic Instrument Co ltd
Gpn Petroleum Technology Co ltd
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Xi'an Aohua Electronic Instrument Co ltd
Gpn Petroleum Technology Co ltd
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Abstract

The embodiment of the utility model discloses a stratum element saturation measuring instrument which comprises a telemetry nipple, a collection generator nipple and a high-control nipple, wherein a measuring module is arranged in the telemetry nipple, a neutron tube and a gamma probe group are arranged in the collection generator nipple, the gamma probe group is used for detecting secondary gamma rays generated after stratum elements are activated by pulse neutrons emitted by the neutron tube, a high-voltage control module is arranged in the high-control nipple, and the telemetry nipple is independent or the telemetry nipple, the collection generator nipple and the high-control nipple are connected with a ground system after being combined to form different measuring modes. The utility model obtains the stratum element energy spectrum and the time spectrum containing multiple parameters by arranging the three short sections, and improves the accuracy and precision of the measurement of the stratum element saturation degree based on a saturation degree calculation method combining a subsequent energy window method and an element solution spectrum method.

Description

Stratum element saturation measuring instrument
Technical Field
The embodiment of the utility model relates to the technical field of formation element measurement, in particular to a formation element saturation measuring instrument.
Background
The position of unconventional oil and gas resources in the energy pattern of China is more and more important, and the unconventional oil and gas resources become the key field of exploration and development. Logging is needed in the exploration and development process of oil and gas field resources, so that workers can know the oil saturation of underground stratum in time, and the oil field can be exploited subsequently. The nuclear logging technology is one of the most advanced logging technologies which are rapidly developed along with the development of the current nuclear technology and the development requirements of petroleum, coal, geological minerals and the like on the nuclear logging technology. The method comprises the steps of natural gamma logging for measuring the natural radioactivity of the stratum, natural gamma spectrum logging for obtaining the content of uranium, thorium and potassium, geochemical logging and element capture logging for measuring the element thermal neutron capture spectrum of the stratum at present, and provides an effective solution for solving the problems of complex reservoir lithology identification, rock skeleton density calculation, reservoir physical property parameter determination, deposition environment research, stratum comparison and the like.
At present, the existing oil fields at home and abroad have instruments for measuring stratum elements, which comprise two modes based on a chemical source and a controllable neutron source, but the conventional controllable neutron source measuring instrument cannot accurately measure the saturation of the stratum elements, so that a multifunctional integrated comprehensive evaluation instrument is needed.
SUMMERY OF THE UTILITY MODEL
Therefore, the embodiment of the utility model provides a formation element saturation measuring instrument, which aims to solve the problem that the formation element saturation cannot be measured accurately in the prior art.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
according to the first aspect of the embodiment of the utility model, the stratum element saturation measuring instrument comprises a telemetry short section, a collection generator short section and a high-pressure control short section which are sequentially connected from top to bottom, wherein a measuring module is arranged in the telemetry short section to measure parameters of multiple natural world underground, a neutron tube and a gamma probe group are arranged in the collection generator short section, the gamma probe group is used for detecting secondary gamma rays generated after stratum elements are activated by pulse neutrons emitted by the neutron tube, and a high-pressure control module is arranged in the high-pressure control short section to provide high-pressure control for the neutron tube in the independent short section;
the remote transmission short joint is independently connected with a ground system;
or the telemetry nipple, the acquisition generator nipple and the high-control nipple are combined and then connected with a ground system, so that the formation element saturation measuring instrument forms different measuring modes according to the logging requirements.
Further, the measurement module includes a natural gamma detector to detect gamma rays of nature.
Further, the measuring module further comprises a pressure probe, a temperature probe and a magnetic positioning piece which are arranged above the natural gamma detector.
Further, the gamma probe group comprises a far detector and a near detector, the far detector, the near detector and the neutron tube are sequentially arranged from top to bottom, and the far detector and the near detector are BGO detectors.
Further, be equipped with long detector in the collection generator nipple joint to long detector is used for surveying the gas layer, wherein, long detector is for arranging the NaI probe above the detector far away.
Furthermore, a protective cap is arranged at the top end of the remote transmission short section, and a pressure bearing cap is arranged at the tail end of the high-control short section.
The embodiment of the utility model has the following advantages: by arranging the three short sections, multiple parameters of the nature are measured by the remote transmission short section to carry out depth correction, and a gamma probe group in the acquisition generator short section is used for detecting secondary gamma rays generated after stratum elements are activated by pulsed neutrons emitted by a neutron tube, so that different measurement modes are formed according to selection of the remote transmission short section or combination of the three short sections, and therefore stratum element energy spectrums and time spectrums containing multiple parameters are obtained, and further, a saturation calculation method based on combination of a subsequent energy window method and an element spectrum analysis method is used for improving accuracy and precision of stratum element saturation measurement.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, should still fall within the scope of the present invention.
Fig. 1 is a schematic view of an overall structure of a formation element saturation measuring instrument according to an embodiment of the present invention.
In the figure: 1. a remote transmission short section; 11. a natural gamma detector; 12. a pressure probe; 13. a temperature probe; 14. a magnetic positioning element; 2. collecting a short section of a generator; 21. a neutron tube; 22. a far detector; 23. a proximity detector; 24. a long detector; 3. a high-control short section; 4. a protective cap; 5. a pressure-bearing cap.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the utility model will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the utility model and that it is not intended to limit the utility model to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1, an embodiment of the present invention provides a formation element saturation measuring instrument, including a telemetry sub 1, an acquisition generator sub 2, and a high-control sub 3, which are sequentially connected from top to bottom. Be equipped with measuring module in the telemetry nipple 1 to a plurality of parameter measurement to the nature, wherein, measuring module includes nature gamma detector 11 to survey the gamma ray of nature, and set up pressure probe 12, temperature probe 13 and the magnetic positioning piece 14 above nature gamma detector 11, in order to accomplish the measurement of parameters such as GR (nature gamma), pressure, well temperature, magnetic positioning in the pit through telemetry nipple 1. Be equipped with neutron pipe 21 and gamma probe group in gathering generator nipple joint 2 to make gamma probe group survey stratum element and receive the pulse neutron activation back of neutron pipe 21 transmission, produced secondary gamma ray, wherein, the neutron pipe selects the pulse neutron generator of 21 high temperatures, long-lived, high yield, gamma probe group includes far detector 22 and near detector 23, far detector 22, near detector 23 and neutron pipe 21 arrange from top to bottom in proper order, and far detector 22 and near detector 23 are the BGO detector of major diameter, so that gather fast. Preferably, a long detector 24 is also provided in the acquisition generator sub 2, the long detector 24 being a NaI probe arranged above the far detector 22 for gas layer measurement.
As described above, the telemetry nipple 1 periodically sends data to the acquisition generator nipple 2, acquires parameter data such as GR, pressure, well temperature, magnetic positioning, and sends the acquired data to the ground system, so that the telemetry nipple 1 performs depth correction in the GR, pressure, well temperature, magnetic positioning measurement mode. Wherein, teletransmission nipple joint 1 receives the control command of host computer, if receive the command and send collection generator nipple joint 2, collection generator nipple joint 2 counts its inside gamma probe group, and ground system shows the energy spectrum and the time spectrum of formation element simultaneously. The principle is as follows: neutron tube 21 emits neutrons in a pulsed manner, which neutrons react with formation elements surrounding the gauge in an activating manner and produce secondary gamma rays, which when detected by the gamma probe set, the gauge records the time spectrum of the secondary gamma rays emitted by the formation elements. The time for detecting the secondary gamma ray, namely the average time from the neutron explosion to the detection of the characteristic peak of the secondary gamma ray, is calculated, and then the energy spectrum between two points is obtained according to the detection comparison of two measuring points of the far detector 22 and the near detector 23.
Be equipped with high-voltage control module in the high accuse nipple joint 3, it is including high-voltage pulse power supply to make high-voltage control module provide high-voltage control for the neutron pipe in independent nipple joint, through separating out the high-voltage control part of neutron pipe 21 alone, with the interference that reduces weak current. Preferably, the top end of the remote transmission short section 1 is provided with a protective cap 4, and the tail end of the high-control short section 3 is provided with a pressure bearing cap 5.
The formation element saturation measuring instrument of the embodiment can be independently connected with a ground system by adopting a remote transmission short joint 1;
also can adopt telemetry nipple joint 1, gather generator nipple joint 2 and 3 combinations of high accuse nipple joint back and link to each other with the ground system to make stratum element saturation measuring apparatu constitute different measurement modes according to the logging demand, for example:
(1) measuring four parameters
Combining: a ground system + a cable + a remote transmission short section 1;
the functions are as follows: and finishing measurement of GR, pressure, well temperature and magnetic positioning parameters.
(2) Full mode measurement
Combining: the ground system + cable + telemetry nipple 1+ acquisition generator nipple 2+ high control nipple 3;
the functions are as follows: SIGMA F (far SIGMA), SIGMA N (near SIGMA), N (near count rate), F (far count rate), RNF (near and far rate ratio), C/O, GR and CCL, measurement of temperature and pressure parameters, measurement of water flow, and measurement of gas saturation.
(3) Capture mode measurement:
combining: the ground system + cable + telemetry nipple 1+ acquisition generator nipple 2+ high control nipple 3;
the functions are as follows: and (4) measuring parameters of SIGMA F (far SIGMA), SIGMA N (near SIGMA), N (near counting rate), F (far counting rate), RNF (near and far rate-to-rate ratio), GR and CCL, and temperature and pressure.
In the embodiment of the utility model, three short sections are arranged, a plurality of parameters in nature are measured by a remote transmission short section 1 to carry out depth correction, a gamma probe group in an acquisition generator short section 2 is used for detecting secondary gamma rays generated after stratum elements are activated by pulsed neutrons emitted by a neutron tube, different measurement modes are formed according to selection of the remote transmission short section 1 or a combination of the three short sections, so that an energy spectrum and a time spectrum of the stratum elements containing a plurality of parameters are obtained, a saturation degree calculation method based on combination of an energy window method and an element spectroscopy method is further used for improving the accuracy and precision of measurement of the saturation degree of the stratum elements, the mass percentage content of the stratum elements is calculated by adopting an energy spectrum analysis method and converted into the mass percentage content of the stratum minerals, and the measurable elements comprise Si, Ca, S, Fe, Ti, Gd, H, Cl, Mg, Na, C, O and the mass percentage content of the stratum elements, Al, Mn, Ba, etc., and the valuable minerals include 10 kinds of minerals such as dolomite, calcite, pyrite, clay, siliceous material, etc.
Although the utility model has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the utility model. Accordingly, such modifications and improvements are intended to be within the scope of the utility model as claimed.

Claims (6)

1. A stratum element saturation measuring instrument is characterized in that: the formation element saturation measuring instrument comprises a telemetry nipple, a collection generator nipple and a high-control nipple which are sequentially connected from top to bottom, wherein a measuring module is arranged in the telemetry nipple to measure parameters of multiple natural world underground, a neutron tube and a gamma probe group are arranged in the collection generator nipple, the gamma probe group is used for detecting secondary gamma rays generated after formation elements are activated by pulse neutrons emitted by the neutron tube, and a high-voltage control module is arranged in the high-control nipple and is used for providing high-voltage control for the neutron tube in an independent nipple;
the remote transmission short joint is independently connected with a ground system;
or the telemetry nipple, the acquisition generator nipple and the high-control nipple are combined and then connected with a ground system, so that the formation element saturation measuring instrument forms different measuring modes according to the logging requirements.
2. The formation element saturation measuring instrument according to claim 1, wherein: the measurement module includes a natural gamma detector to detect gamma rays of nature.
3. The formation element saturation measuring instrument according to claim 2, wherein: the measuring module further comprises a pressure probe, a temperature probe and a magnetic positioning piece, wherein the pressure probe, the temperature probe and the magnetic positioning piece are arranged above the natural gamma detector.
4. The formation element saturation measuring instrument according to claim 1, wherein: the gamma probe group comprises a far detector and a near detector, the far detector, the near detector and the neutron tube are sequentially arranged from top to bottom, and the far detector and the near detector are BGO detectors.
5. The formation element saturation measuring instrument according to claim 4, wherein: the acquisition generator is characterized in that a long detector is arranged in the short section of the acquisition generator and used for measuring a gas layer, wherein the long detector is a NaI probe arranged above a far detector.
6. The formation element saturation measuring instrument according to claim 1, wherein: the top end of the remote transmission short section is provided with a protective cap, and the tail end of the high-control short section is provided with a pressure bearing cap.
CN202022748932.8U 2020-11-24 2020-11-24 Stratum element saturation measuring instrument Active CN215369811U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022748932.8U CN215369811U (en) 2020-11-24 2020-11-24 Stratum element saturation measuring instrument

Publications (1)

Publication Number Publication Date
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Country Status (1)

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CN (1) CN215369811U (en)

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PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: A Formation Element Saturation Measuring Instrument

Effective date of registration: 20221107

Granted publication date: 20211231

Pledgee: Xi'an spaceflight base financing Company limited by guarantee

Pledgor: XI'AN AOHUA ELECTRONIC INSTRUMENT CO.,LTD.

Registration number: Y2022610000719

PE01 Entry into force of the registration of the contract for pledge of patent right
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20231130

Granted publication date: 20211231

Pledgee: Xi'an spaceflight base financing Company limited by guarantee

Pledgor: XI'AN AOHUA ELECTRONIC INSTRUMENT CO.,LTD.

Registration number: Y2022610000719

PC01 Cancellation of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: A stratigraphic element saturation measuring instrument

Effective date of registration: 20231201

Granted publication date: 20211231

Pledgee: Xi'an spaceflight base financing Company limited by guarantee

Pledgor: XI'AN AOHUA ELECTRONIC INSTRUMENT CO.,LTD.

Registration number: Y2023610000751

PE01 Entry into force of the registration of the contract for pledge of patent right