CN1645090A - Rock saturation sample storing method - Google Patents
Rock saturation sample storing method Download PDFInfo
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- CN1645090A CN1645090A CN 200510020213 CN200510020213A CN1645090A CN 1645090 A CN1645090 A CN 1645090A CN 200510020213 CN200510020213 CN 200510020213 CN 200510020213 A CN200510020213 A CN 200510020213A CN 1645090 A CN1645090 A CN 1645090A
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- sample
- rock
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- sample storing
- bag
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Abstract
A method for holding sample of rock saturation includes preparing high polymer polyvinyl chloride bag in size as rock core sample, placing core sample taken from underground in the bag and vacuuming as well as sealing the bag. The method makes the sample convenient in transportation.
Description
Technical field: a kind of rock saturation sample storing method, be used for the storage and transport of saturation degree sample rock that spot sampling is obtained, belong to and gather the technical field of preserving the rock sample saturation degree.
Prior art: in the prior art, owing to can reflect the oil on stratum, sample place really from the rock saturation degree sample of collection in worksite, the content of G﹠W, therefore be the important parameter that calculates oil and gas reserves, at present, owing to can not finish the test job of rock saturation degree at the scene, so the laboratory must be preserved and be transported to the saturation degree rock sample of collection in worksite, according to Oil and Natural Gas Corporation's standard code, present store method is after underground rock core is taken out ground, the method that employing is sealed with wax or liquid nitrogen is preserved is transported to testing laboratory with sample, present store method still can carry out aspect short-distance transport, but, at present since the place of petroleum prospecting and exploitation mostly in more remote place, away from centralab, need long-distance transport sample could be delivered to the laboratory, if adopt existing store method, particularly the transportation to the overlength way is more difficult, if employing transport by road, just can not in time sample be delivered to the laboratory as requested, cause original oil and water distortion in the sample, if employing air transport, regulation according to the state aviation method, the potpourri of lapping paraffin and kerosene is the contraband of aviation, so can not air transport.
The objective of the invention is shortcoming, have the minimum principle of permeability after the employing vacuum seal, design a kind of rock saturation sample storing method that makes things convenient for, is used safely in to transport for long-distance according to prior art.
Summary of the invention: the present invention is achieved in that elder generation's sack of being made by the macromolecule pvc material of size dimension needs design according to core sample, the core sample that will take out from the down-hole is in time put into bag then, carries out can transporting after the vacuum-pumping and sealing; Advantage of the present invention is: through evidence, the macromolecule pvc material is under the pressure of 3MPa, and its permeability goes to zero, and No. 90 gasoline is packed into seal after vacuumizing in the bag, after 480 hours; Volatile quantity only is 0.097%, is that 15% sandstone is in vacuum tightness 〉=6.67 * 10 with factor of porosity
-2The distilled water that carries out 20 hours under Pa, the high pressure saturation pressure 〉=25MPa is saturated, packing vacuumized sealing after 480 hours then, its volatile quantity is 0.31%, according to test findings, this method meets and contains Oil and Natural Gas Corporation fully about the requirement to rock saturation degree sample collecting, store method, and has the characteristics of convenient and safe transportation.
Specific implementation method: because the layer position of sampling is different, the size dimension of rock core and length are also inequality, so, implementing the present technique first step is to adopt the specification of macromolecule pvc material according to the good different sealing bag of size design of different core samples earlier, second step was the specification that chooses sealing bag in use according to the core sample of different size, the 3rd step was not stop in the sealing bag of getting ready of packing into immediately under the surface air environment core sample that take out the down-hole, at last sealing bag is vacuumized under the condition of vacuum tightness≤0.03MPa, seal then, the time that vacuumizes answered for≤30 seconds, otherwise the natural component in the rock core will be drawn out of, and losing the authenticity of test with this, the saturation degree rock sample after will sealing then is transported to centralab and tests.
Claims (2)
1. rock saturation sample storing method is characterized in that:
The first step is to adopt encapsulant to make the specification of sealing bag according to the size design of different core samples earlier;
Second step was that the core sample that take out the down-hole is packed in the sealing bag of getting ready;
The 3rd step was to vacuumize under vacuum tightness≤0.035MPa, time≤30 second that vacuumizes.
2. a kind of rock saturation sample storing method as claimed in claim 1 is characterized in that:
Described sealing bag is to adopt the macromolecule pvc material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510020213 CN1645090A (en) | 2005-01-20 | 2005-01-20 | Rock saturation sample storing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510020213 CN1645090A (en) | 2005-01-20 | 2005-01-20 | Rock saturation sample storing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1645090A true CN1645090A (en) | 2005-07-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510020213 Pending CN1645090A (en) | 2005-01-20 | 2005-01-20 | Rock saturation sample storing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1645090A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101935998A (en) * | 2010-09-26 | 2011-01-05 | 西安建筑科技大学 | Method for storing big size nonsaturated structural undistributed soil sample |
| CN101964156A (en) * | 2010-10-31 | 2011-02-02 | 大庆油田有限责任公司 | Long-term preservation method for well core |
| CN103253448A (en) * | 2013-05-08 | 2013-08-21 | 北京中矿深远能源环境科学研究院 | Rock sample wax sealing device and portable rock sample box |
| CN109398951A (en) * | 2018-10-25 | 2019-03-01 | 中国辐射防护研究院 | A kind of core elastic force caching is sealed device and method |
| CN109625622A (en) * | 2018-10-25 | 2019-04-16 | 中国辐射防护研究院 | A kind of core pressurized seal save set and method |
-
2005
- 2005-01-20 CN CN 200510020213 patent/CN1645090A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101935998A (en) * | 2010-09-26 | 2011-01-05 | 西安建筑科技大学 | Method for storing big size nonsaturated structural undistributed soil sample |
| CN101964156A (en) * | 2010-10-31 | 2011-02-02 | 大庆油田有限责任公司 | Long-term preservation method for well core |
| CN101964156B (en) * | 2010-10-31 | 2012-01-18 | 大庆油田有限责任公司 | Long-term preservation method for well core |
| CN103253448A (en) * | 2013-05-08 | 2013-08-21 | 北京中矿深远能源环境科学研究院 | Rock sample wax sealing device and portable rock sample box |
| CN103253448B (en) * | 2013-05-08 | 2015-05-27 | 北京中矿深远能源环境科学研究院 | Rock sample wax sealing device and portable rock sample box |
| CN109398951A (en) * | 2018-10-25 | 2019-03-01 | 中国辐射防护研究院 | A kind of core elastic force caching is sealed device and method |
| CN109625622A (en) * | 2018-10-25 | 2019-04-16 | 中国辐射防护研究院 | A kind of core pressurized seal save set and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |