CN103063485B - A kind of rock sample process forming cup and rock sample cubage measuring method - Google Patents
A kind of rock sample process forming cup and rock sample cubage measuring method Download PDFInfo
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- CN103063485B CN103063485B CN201110319307.4A CN201110319307A CN103063485B CN 103063485 B CN103063485 B CN 103063485B CN 201110319307 A CN201110319307 A CN 201110319307A CN 103063485 B CN103063485 B CN 103063485B
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- melt adhesive
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Abstract
The invention discloses a kind of rock sample process forming cup and rock sample cubage measuring method.Forming cup comprises cup, bottom spacer, outer cylindrical disk, support bar and shell fragment, and cup is column type, and bottom spacer is thin column type, is placed in cup inner bottom part, and bottom spacer diameter is suitable with cup internal diameter; Described bottom of cup central authorities are provided with bottom outlet; Outer cylindrical disk is arranged at the outer bottom of cup, and outer cylindrical disk is arranged a vertical support bar, this support bar is fixedly connected with bottom spacer is detachable through bottom outlet; Be provided with shell fragment between outer wall at the bottom of outer cylindrical disk and cup, shell fragment is V-arrangement.Method comprises: make irregular rock sample and hot melt adhesive obtain regular cylindrical shape by forming cup, calculate volume, and the volume of removing hot melt adhesive, draws rock sample volume.Forming cup of the present invention and assay method can realize Accurate Measurement rock sample volume for irregular rock sample, and device, method is simple, and accuracy is high.
Description
Technical field
The present invention relates to petroleum and gas geology and exploration development field, say further, relate to a kind of rock sample process forming cup and rock sample cubage measuring method.
Background technology
In oil-gas geology laboratory, in rock sample porosity determination process, usually need to obtain two in (measure or calculate) rock sample cumulative volume, rock sample solid volume, these three parameters of volume of voids, calculate rock sample factor of porosity by factor of porosity definition.Wherein rock sample solid volume is the important parameter often measured.
The mensuration of rock sample solid volume generally uses gas method, and this method has been applied for many years, has a lot of successfully experience.The instrument composition of gas method mensuration solid volume, principle of work, mensuration process are as follows:
(1) instrument composition
Instrument is made up of source of the gas, standard chamber, sample chamber, standard chamber and sample chamber associated line and valve, gas pressure sensor, mark block and the computing machine etc. for data acquisition and processing (DAP); Wherein source of the gas provides pressure to be not less than the gas of 0.5Mpa for testing; Standard chamber is the leakproofness cavity that a volume is fixed; Sample chamber is the cylindrical cavity that a volume is fixed, sample chamber internal diameter about 25mm, sample chamber about degree of depth 40mm, and for placing cylindric rock sample, lid is arranged at top, for the sealing of sample chamber, also facilitates rock sample to put into and take out; Standard chamber and sample chamber are linked by gas line, pipeline have valve and gas pressure sensor (or tensimeter), and gas pressure sensor is used for mensurated gas composition pressure; Mark block is the cylindrical bloom that one group of volume (thickness) is differed in size, and diameter is slightly less than the internal diameter of sample chamber, conveniently puts in sample chamber and takes out; Computing machine is used for the collection of pressure data and the calculating etc. of rock sample solid volume.
(2) principle of work and test process
According to Boyle's law, when having certain pressure (P in standard chamber
1) gas, when temperature-resistant, when pipeline is diffused into sample chamber, gaseous tension can decline, until balance, pressure is now called equalized pressure (P
2).Now, following formula is set up:
P
1*V
1＝P
2*(V
2+V
1)-------------------------------------------------------------------(1)
Wherein, V
1: the line volume sum between standard chamber and standard chamber to valve;
V
2: the line volume sum between sample chamber and sample chamber to valve;
When being placed in sample chamber by rock sample, following formula is set up:
P
1*V
1＝P
2*(V
1+V
2-V
3)----------------------------------------------------------------(2)
Wherein, V
3: the solid volume of rock sample;
Due to V
1, V
2fixing known, therefore, as long as fixing P
1, measure P
2, just can calculate the solid volume V of rock sample
3.
V
3＝(P
2*V
2+P
2*V
1-P
1*V
1)/P
2
＝V
2+V
1-P
1*V
1/P
2----------------------------------------------------------------------(3)
As can be seen from formula (3), the measured value of rock sample solid volume, when condition of work is certain, depends on equalized pressure P
2size, equalized pressure P
2estimating precision directly affect the estimating precision of rock sample solid volume.
When solid volume mensuration is carried out in the mark block combination varied in size with volume, the relation curve (Fig. 1) of solid volume and equalized pressure can be obtained, solid volume measured value and equalized pressure are positive correlation, equalized pressure is larger, rock sample solid volume is larger, equalized pressure is less, and reflection solid volume is also less.As can be seen from relation curve, at equalized pressure smaller part, less pressure variety, can cause larger solid volume change, this is very high to the accuracy requirement of pressure transducer, does not reach corresponding precision, can cause error at measurment.
In sample test process, because sample size differs, often in sample chamber, add mark block not of uniform size, to fill up sample chamber as far as possible, to avoid equalized pressure too small, make it be in equalized pressure and the good scope of solid volume linear relationship, ensure the estimating precision of solid volume.
Along with deepening continuously of oil-gas exploration and development, the object of porosity determination has a very large change.By comparatively single reservoir samples, extend to petroleum source bed, cap rock sample.Lithology also becomes variation, except common sandstone, dirty sandstone, limestone, pierite, pyrogenic rock etc., extend to mud stone, shale, mud shale, cream rock etc.Rock sample solid volume is measured diversified, complicated, original method, working method and flow process, can not meet requirements of one's work.
(1) difficulty obtaining regular shape (cylindric) rock sample sample strengthens, and the specimen shape of acquisition is irregular, and lamellar and rock sample that is strip accounts for significant proportion.
(2) sometimes by the total quantitative limitation of sample, the rock sample size obtained is little, and outward appearance is irregular spherical etc.
After these rock samples are placed into sample chamber, a kind of situation is difficult to place mark block again, causes remaining space in sample chamber large; Even if another kind of situation can put into mark block on a small quantity, but due to shape be that spherical shape etc. is irregularly shaped, the remaining space in sample chamber is still larger.In both cases; carrying out in solid volume mensuration process with gas method; equalized pressure is very little; usually over balance pressure and the good scope of solid volume linear relationship (can even exceed the range of linearity of pressure transducer; equalized pressure estimating precision is caused to reduce), cause rock sample solid volume estimating precision to decline.
Summary of the invention
For solving problems of the prior art, the invention provides a kind of rock sample process forming cup and rock sample cubage measuring method.Can realize Accurate Measurement rock sample volume for irregular rock sample, device, method is simple, and accuracy is high.
An object of the present invention is to provide a kind of rock sample process forming cup.
Described forming cup comprises cup, bottom spacer, outer cylindrical disk, support bar and shell fragment,
Described cup is column type, and bottom spacer is thin column type, is placed in cup inner bottom part, and bottom spacer diameter is suitable with cup internal diameter; Described bottom of cup central authorities are provided with bottom outlet;
Described outer cylindrical disk is arranged at the outer bottom of cup, and outer cylindrical disk is arranged a vertical support bar, this support bar is fixedly connected with bottom spacer is detachable through bottom outlet;
Described support bar and bottom spacer be detachable to be fixedly connected with to adopt and to be of the prior artly variously detachablely fixedly connected with mode, connects or be threaded as bail type.When being threaded, support bar is screw shaped, and bottom spacer bottom surface is provided with threaded hole, and support bar can be made to screw in, thus fixing.
Shell fragment is provided with between outer wall at the bottom of described outer cylindrical disk and cup, described shell fragment is V-arrangement, it is plane bottom V-arrangement, and base plane is provided with through hole, the outside horizontal-extending in two ends, V-arrangement top, described support bar is through the through hole in shell fragment base plane, and the base plane of shell fragment is fixedly connected with outer cylindrical disk, and the two ends, V-arrangement top of shell fragment contact with outer wall at the bottom of cup.Wherein, the base plane of described shell fragment is fixedly connected with mode and can adopts common in prior art being fixedly connected with outer cylindrical disk, as: screw connect, bonding, rivet interlacement etc.
The internal diameter of described cup is
the height of cup is 40 ± 5mm; Described bottom diameter is 5-6mm; The wall thickness of described cup is 4-6mm; The bottom thickness of described cup is 5-7mm; The thickness of described outer cylindrical disk is 4-5mm.
Described cup is that exotic material is made, and preferably adopts resistant to elevated temperatures teflon to make.
Concrete technical scheme is as follows:
A kind of rock sample process forming cup, be made up of cup, bottom spacer, outer cylindrical disk, support bar, shell fragment parts, bottom of cup has bottom outlet.Forming cup cup internal volume is
left and right, with the sizableness of standard round column rock sample, material is the teflon etc. of resistance to more than 100 DEG C high temperature; Take out for convenience of rock sample, forming cup is with bottom spacer and bottom outlet, and bottom spacer is thin cylindrical, and is connected with an outside cylindricality disk, and the similar diameters of diameter and standard round column rock sample, material is the stainless steel etc. with some strength.The material of the outer cylindrical disk be connected with bottom spacer is the stainless steel etc. with some strength, be connected with screw rod with bottom spacer by bottom outlet, its top is embedded with tool some strength and flexible shell fragment, the effect of shell fragment is the bottom making bottom spacer be adjacent to forming cup in normal state, when externally cylindricality disk is exerted pressure, bottom spacer leaves bottom forming cup, ejects shaping rock sample.Bottom outlet occupy the center of forming cup bottom of cup.Out-of-shape or the too small rock sample of physical dimension and hot-melt adhesive powder (or hot melt adhesive tablet etc.) are placed in forming cup successively, in the mode of heating, hot-melt adhesive powder is dissolved and one-tenth bonding with rock sample is integrated, bonding rear taking-up rock sample and hot melt adhesive are cooled to room temperature, can obtain profile in the rock sample of regular cylindrical shape and the combination of hot melt adhesive.Thus be that the estimating precision improving irregular rock sample solid volume lays the foundation.
Two of object of the present invention is to provide a kind of rock sample cubage measuring method.
Comprise:
To treat that rock sample and hot-melt adhesive powder or micelle are inserted in described forming cup cup, heating, and rubber powder or micelle be melted bonding with rock sample that formation rule cylindric measures its volume with gas method, deduct the volume that hot melt adhesive volume computing obtains rock sample.
Particularly,
(1) under the condition of rock sample oven dry, weigh, obtain rock sample weight G
1;
(2) rock sample is placed in forming cup, and adds a certain amount of hot-melt adhesive powder (or micelle) to covering parcel rock sample;
(3) forming cup heating (as baking oven etc.) of rock sample and hot-melt adhesive powder will be filled, hot-melt adhesive powder is dissolved, bonding rock sample, until bubble-free is overflowed;
(4) forming cup is taken out, cooling;
(5) from forming cup, take out rock sample, now rock sample and hot-melt adhesive powder are to be bonded as one, in regular cylindrical shape;
(6) weight after the bonding hot melt adhesive of rock sample is taken, G
2;
(7) volume of hot melt adhesive is calculated, V
1;
V
1=(G
2-G
1)/D, D is the proportion of hot melt adhesive, known;
(8) volume after the bonding hot melt adhesive of gas method mensuration rock sample, V
2;
(9) solid volume of rock sample is calculated, V
V＝V
2-V
1
For deviating from sample smoothly, before putting into sample and hot melt adhesive, wall of cup can be smeared a little silicone grease, utilizing the heat conduction of silicone grease, heatproof, lubrication, ensure that sample is deviate from.
The present invention, by taking, by the method for bonding for rock sample hot-melt adhesive powder process, to make the regularization of rock sample profile, improves rock sample solid volume measuring accuracy.Be specially adapted to the profiles such as mud stone, shale, mud shale and cream rock solid volume that is irregular and small size rock sample measure.
Accompanying drawing explanation
Fig. 1 volume and balance pressure relationship plot figure
Fig. 2 forming cup structural representation of the present invention
Fig. 3 forming cup sectional view of the present invention
Fig. 4 elastic piece structure schematic diagram
Description of reference numerals:
1-cup; 2-bottom spacer; 3-bottom outlet; 4-support bar; 5-outer cylindrical disk; 6-shell fragment
Embodiment
Below in conjunction with embodiment, further illustrate the present invention.
Embodiment:
As shown in Figures 2 and 3, a kind of rock sample process forming cup, comprises cup 1, bottom spacer 2, outer cylindrical disk 5, support bar 4, shell fragment 6.
Described cup 1 is column type, and bottom spacer 2 is thin column type, is placed in cup 1 inner bottom part, and bottom spacer 2 diameter is suitable with cup 1 internal diameter; Described cup 1 bottom center is provided with bottom outlet 3;
Described outer cylindrical disk 5 is arranged at the outer bottom of cup 1, outer cylindrical disk 5 is arranged a vertical screw as support bar 4, and bottom spacer 2 bottom surface is provided with threaded hole; This support bar 4 screws in the threaded hole of bottom spacer 2 through bottom outlet, forms detachable being fixedly connected with.
Shell fragment 6 is provided with between outer wall at the bottom of described outer cylindrical disk 5 and cup, as shown in Figure 4, described shell fragment 6 is described shell fragment 6 is V-arrangement, it is plane bottom V-arrangement, and base plane is provided with through hole, the outside horizontal-extending in two ends, V-arrangement top, described support bar 4 is through the through hole in shell fragment base plane, the through hole both sides of the base plane of shell fragment 6 are provided with two apertures for being connected with outer cylindrical disk 5 with screw, and the two ends, V-arrangement top of shell fragment 6 contact with outer wall at the bottom of cup.Shell fragment 6 has some strength and flexible, and during sampling, externally cylindricality disk 5 is exerted pressure, and conducts to bottom spacer 2 by support bar 4, and bottom spacer 2 jack-up rock sample is also deviate from.Be adjacent to bottom bottom spacer 2 and cup 1 when not exerting pressure
The internal diameter of described cup is 25mm; The height of cup is 40mm; Described bottom diameter is 5mm; The wall thickness of described cup is 4mm; The bottom thickness of described cup is 5mm; The thickness of described outer cylindrical disk is 5mm.
The material of described cup is the teflon of resistance to 100 DEG C of high temperature.
Determination step is as follows:
Be placed in baking oven by erose mudstone sample and dry, remove surface dirt, be cooled to room temperature, weigh after oven dry, weight is 12.850g;
Smear a little silicone grease at wall of cup, rock sample and hot-melt adhesive powder are put into forming cup successively, make hot-melt adhesive powder cover parcel rock sample, then forming cup is put into baking oven heating, until hot-melt adhesive powder dissolves, and bubble-free is overflowed;
Take out forming cup and be cooled to room temperature, now rock sample and hot melt adhesive are bonded as one, and by shell fragment jack-up bottom spacer, make rock sample by jack-up to deviate from;
Its solid volume is measured for 11.025cm with QK-98 type gaseous porosity analyzer
3, be weighed as 18.383g, hot melt adhesive weight 18.383-12.850=5.533g, its density is 0.9226, then its volume is 5.997cm
3, rock sample solid volume is 11.025-5.997=5.028cm
3.
Claims (9)
1. a rock sample cubage measuring method, is characterized in that comprising:
To treat that rock sample and hot-melt adhesive powder or micelle are inserted in forming cup cup, heating, and rubber powder or micelle be melted bonding with rock sample that formation rule cylindric measures its volume with gas method, deduct the volume that hot melt adhesive volume computing obtains rock sample;
Described forming cup comprises cup, bottom spacer, outer cylindrical disk, support bar and shell fragment,
Described cup is column type, and bottom spacer is thin column type, is placed in cup inner bottom part, and bottom spacer diameter is suitable with cup internal diameter, and described bottom of cup central authorities are provided with bottom outlet;
Described outer cylindrical disk is arranged at the outer bottom of cup, and outer cylindrical disk is arranged a vertical support bar, this support bar is fixedly connected with bottom spacer is detachable through bottom outlet;
Shell fragment is provided with between outer wall at the bottom of described outer cylindrical disk and cup, described shell fragment is V shape, it is plane bottom V shape, and base plane is provided with through hole, the V outside horizontal-extending in two ends, shape top, described support bar is through the through hole in shell fragment base plane, and the base plane of shell fragment is fixedly connected with outer cylindrical disk, and V two ends, shape top of shell fragment contact with outer wall at the bottom of cup.
2. rock sample cubage measuring method as claimed in claim 1, is characterized in that:
The internal diameter of described cup is
The height of cup is 40 ± 5mm.
3. rock sample cubage measuring method as claimed in claim 1, is characterized in that:
Described bottom diameter is 5-6mm.
4. rock sample cubage measuring method as claimed in claim 1, is characterized in that:
The wall thickness of described cup is 4-6mm; The bottom thickness of described cup is 5-7mm.
5. rock sample cubage measuring method as claimed in claim 1, is characterized in that:
The thickness of described outer cylindrical disk is 4-5mm.
6. rock sample cubage measuring method as claimed in claim 1, is characterized in that:
Described cup is that exotic material is made.
7. rock sample cubage measuring method as claimed in claim 6, is characterized in that:
Described cup is that resistant to elevated temperatures teflon is made.
8. rock sample cubage measuring method as claimed in claim 1, is characterized in that:
Described support bar is connected with the detachable bail type that is fixedly connected as of bottom spacer or is threaded.
9. the rock sample cubage measuring method as described in one of claim 1 ~ 8, is characterized in that described method comprises:
(1) rock sample is dried and is weighed, and obtains rock sample weight G
1;
(2) rock sample is placed in forming cup, and adds hot-melt adhesive powder or micelle extremely covering parcel rock sample;
(3) the forming cup heating of rock sample and hot-melt adhesive powder or micelle will be filled, hot-melt adhesive powder or micelle are dissolved, bonding rock sample, until bubble-free is overflowed;
(4) forming cup is taken out, cooling;
(5) take out in the rock sample of regular cylindrical shape and the potpourri of hot-melt adhesive powder or micelle from forming cup, weigh G
2;
(6) volume of hot melt adhesive is calculated, V
1=(G
2-G
1)/D, D is the proportion of hot melt adhesive, and gas method measures the volume after the bonding hot melt adhesive of rock sample, V
2; Calculate the volume of rock sample, V=V
2-V
1.
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|---|---|---|---|
| CN201110319307.4A CN103063485B (en) | 2011-10-19 | 2011-10-19 | A kind of rock sample process forming cup and rock sample cubage measuring method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110319307.4A CN103063485B (en) | 2011-10-19 | 2011-10-19 | A kind of rock sample process forming cup and rock sample cubage measuring method |
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| Publication Number | Publication Date |
|---|---|
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| CN103063485B true CN103063485B (en) | 2015-08-26 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2699303Y (en) * | 2004-05-21 | 2005-05-11 | 中国科学院武汉岩土力学研究所 | Combined type sample cup for liquid-plastic limit integrated analyzer |
| CN201329659Y (en) * | 2009-01-06 | 2009-10-21 | 宁海县大鹏模具塑料有限公司 | Injection mold dynamic and fixed mould bidirectional helical ejection mechanism |
| CN102139524A (en) * | 2011-02-19 | 2011-08-03 | 宁海县永诚模具有限公司 | Injection mould for automobile fuel tank fuel filler cap |
| CN202420930U (en) * | 2011-10-19 | 2012-09-05 | 中国石油化工股份有限公司 | Forming cup for treating rock samples |
-
2011
- 2011-10-19 CN CN201110319307.4A patent/CN103063485B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2699303Y (en) * | 2004-05-21 | 2005-05-11 | 中国科学院武汉岩土力学研究所 | Combined type sample cup for liquid-plastic limit integrated analyzer |
| CN201329659Y (en) * | 2009-01-06 | 2009-10-21 | 宁海县大鹏模具塑料有限公司 | Injection mold dynamic and fixed mould bidirectional helical ejection mechanism |
| CN102139524A (en) * | 2011-02-19 | 2011-08-03 | 宁海县永诚模具有限公司 | Injection mould for automobile fuel tank fuel filler cap |
| CN202420930U (en) * | 2011-10-19 | 2012-09-05 | 中国石油化工股份有限公司 | Forming cup for treating rock samples |
Non-Patent Citations (1)
| Title |
|---|
| 气体法测定有效孔隙率;中心实验室物性组;《石油地质实验》;19661231(第2期);32-35 * |
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