CN203867567U - Efficient carbon/oxygen-ratio energy-spectrum logging instrument - Google Patents
Efficient carbon/oxygen-ratio energy-spectrum logging instrument Download PDFInfo
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- CN203867567U CN203867567U CN201420198895.XU CN201420198895U CN203867567U CN 203867567 U CN203867567 U CN 203867567U CN 201420198895 U CN201420198895 U CN 201420198895U CN 203867567 U CN203867567 U CN 203867567U
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Abstract
The utility model relates to an efficient carbon/oxygen-ratio energy-spectrum logging instrument which comprises an upper protective cap, a threaded ring, an upper seal joint, an energy-spectrum outer cylinder, an adjusting pad and a tail cap which are sequentially connected together. A low-voltage power supply, a detector, a lead shielding body, a tungsten shielding body, a neutron generator and a drive circuit are arranged in the energy-spectrum outer cylinder. The front end of the upper seal joint is provided with a 31 core female socket, a compression spring and a spring base, and is connected with the upper protective cap through the threaded ring. The energy-spectrum outer cylinder is made of 7A04 superhard aluminum materials. BGO (Bismuth Germanium Oxide) crystal photomultiplier tubes are adopted for the detector. The efficient carbon/oxygen-ratio energy-spectrum logging instrument is simple in structure and convenient to install and use, the measuring value can reach +/- 7 measuring accuracy containing saturability, the layer interpretation accuracy lower than 0.8 m can be reached, and the efficient carbon/oxygen-ratio energy-spectrum logging instrument can be resistant to temperature of 150 DED C, can be resistant to pressure of 50 MPa, and is more suitable for the logging environment with stratum porosity being larger than 12%.
Description
Technical field
The utility model relates to a kind of oil well logging instrument, relates in particular to one and can measure the ratio of formation carbon oxygen element, determines the efficient carbon-to-oxygen ratio spectrum logging instrument of oil reservoir oil saturation.
Background technology
In the exploration and development process in oil field, dynamic for determining the production of produce oil gas-bearing formation, water layer and monitoring stages of labor, identify Water Flooding Layer and judge water flooding degree, need to log well to cased well and producing well etc., correctly to grasp the distribution situation of oil-gas Layer and water layer, with the various dynamic parameters of stages of labor, thereby correctly formulate the exploitation recovery scheme in oil field.The theoretical foundation of carbon-to-oxygen ratio spectrum logging instrument is the inelastic scattering theory of fast neutron.After high energy fast neutron is injected stratum, the atomic nucleus generation inelastic scattering with element in stratum, causes atomic nucleus in excited state.In the time that atomic nucleus returns to stable state from excited state, will radiate the gamma ray with certain energy.For the atomic nucleus of different elements, the energy of its inelastic scattering gamma ray is different.Therefore can carry out energy and strength analysis (being energy spectrum analysis) to the inelastic scattering gamma ray in stratum, determine and in stratum, have carbon oxygen element and content.Main carbon elements and protium in oil, main containing oxygen element and protium in water, can obtain carbon oxygen relative amount ratio in stratum by carbon-to-oxygen ratio spectrum logging, can in the well that has descended sleeve pipe, find the oil-gas Layer of omitting, in the oil well having recovered the oil, determine the residual saturation of oil reservoir.
Carbon/oxygen log has irreplaceable effect in the exploration and development in oil field, especially in producing well, find oil reservoir detect oil production rate, observe oil reservoir dynamically, the aspect such as water detection sealing agent reservoir remaining oil monitoring has a wide range of applications.The restriction of traditional carbon/oxygen log instrument vertical resolution, makes the practicality of its data be subject to very large restriction, can only carry out quantitative explanation to layer more than 0.5m at present, and the layer Explanation Accuracy below 0.8m is not high, need to improve the resolution ratio of instrument.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of for the problems referred to above to measure with lower floor at 0.8m, and can heatproof 150 degrees Celsius, the efficient carbon-to-oxygen ratio spectrum logging instrument of withstand voltage 50MPa.
For achieving the above object, the utility model is realized by the following technical solutions:
Efficient carbon-to-oxygen ratio spectrum logging instrument, comprises the upper helmet, threaded collar, upper seal nipple, power spectrum urceolus, spacer and the tail cap that are connected in turn; Wherein, low-tension supply, probe, lead screen body, tungsten shield, accelerator for neutron production, drive circuit are set in power spectrum urceolus, upper seal nipple front end is provided with 31 core mother sockets, Compress Spring and spring base, and is connected with upper helmet by threaded collar.
Described power spectrum urceolus adopts 7A04 superduralumin material.
Described probe adopts BGO (bismuth germanium oxide) crystal-photomultiplier tube.
Compared with prior art, the beneficial effects of the utility model are:
The utility model adopts BGO crystal-photomultiplier tube to make probe, and detection efficient is high, disturbed by thermal neutron little.Power spectrum urceolus adopts 7A04 superduralumin material, can 150 degrees Celsius of withstand voltage 50MPa of heatproof, compared with white steel tool housing, can eliminate interference, and improve precision and the accuracy of apparatus measures signal.
The utility model is simple in structure, easy to install, can reach ± 7 certainties of measurement that contain saturation ratio of measured value.The logging environment that applicable formation porosity is greater than 12%.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure: the upper seal nipple 3-power spectrum urceolus 4-spacer 5-tail cap 6-low-tension supply 7-probe 8-lead screen body 9-tungsten shield 10-accelerator for neutron production 11-drive circuit 12-31 core mother socket 13-Compress Spring 14-spring base 15-threaded collar of the upper helmet 2-of 1-
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is further illustrated:
As shown in Figure 1, efficient carbon-to-oxygen ratio spectrum logging instrument, comprises the upper helmet 1, threaded collar 15, upper seal nipple 2, power spectrum urceolus 3, spacer 4 and the tail cap 5 that are connected in turn; Wherein, power spectrum urceolus 3 adopts 7A04 superduralumin material, interior low-tension supply 6, probe 7, lead screen body 8, tungsten shield 9, accelerator for neutron production 10, the drive circuit 11 of arranging of power spectrum urceolus 3.Described probe 7 adopts BGO (bismuth germanium oxide) crystal-photomultiplier tube.Upper seal nipple 2 front ends are provided with 31 core mother sockets 12, Compress Spring 13 and spring base 14, and are connected with upper helmet 1 by threaded collar 15.
Above, be only general principle of the present utility model, not the utility model imposed any restrictions, everyly according to the utility model, it is carried out to equivalent variations and modification, all within the category of the art of this patent protection scheme.
Claims (3)
1. efficient carbon-to-oxygen ratio spectrum logging instrument, is characterized in that, comprises the upper helmet, threaded collar, upper seal nipple, power spectrum urceolus, spacer and the tail cap that are connected in turn; Wherein, low-tension supply, probe, lead screen body, tungsten shield, accelerator for neutron production, drive circuit are set in power spectrum urceolus, upper seal nipple front end is provided with 31 core mother sockets, Compress Spring and spring base, and is connected with upper helmet by threaded collar.
2. efficient carbon-to-oxygen ratio spectrum logging instrument according to claim 1, is characterized in that, described power spectrum urceolus adopts 7A04 superduralumin material.
3. efficient carbon-to-oxygen ratio spectrum logging instrument according to claim 1, is characterized in that, described probe adopts BGO (bismuth germanium oxide) crystal-photomultiplier tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420198895.XU CN203867567U (en) | 2014-04-23 | 2014-04-23 | Efficient carbon/oxygen-ratio energy-spectrum logging instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420198895.XU CN203867567U (en) | 2014-04-23 | 2014-04-23 | Efficient carbon/oxygen-ratio energy-spectrum logging instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203867567U true CN203867567U (en) | 2014-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420198895.XU Expired - Fee Related CN203867567U (en) | 2014-04-23 | 2014-04-23 | Efficient carbon/oxygen-ratio energy-spectrum logging instrument |
Country Status (1)
| Country | Link |
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| CN (1) | CN203867567U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467467A (en) * | 2015-12-23 | 2016-04-06 | 西京学院 | Manufacture technology of standard module used for carbon-dioxide ratio energy spectrum well |
| CN107630698A (en) * | 2017-08-21 | 2018-01-26 | 中国石油天然气股份有限公司 | A kind of one-well metering system |
-
2014
- 2014-04-23 CN CN201420198895.XU patent/CN203867567U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467467A (en) * | 2015-12-23 | 2016-04-06 | 西京学院 | Manufacture technology of standard module used for carbon-dioxide ratio energy spectrum well |
| CN107630698A (en) * | 2017-08-21 | 2018-01-26 | 中国石油天然气股份有限公司 | A kind of one-well metering system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141008 Termination date: 20160423 |