CN203688518U - Test unit for coking for sand control - Google Patents
Test unit for coking for sand control Download PDFInfo
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- CN203688518U CN203688518U CN201320692901.2U CN201320692901U CN203688518U CN 203688518 U CN203688518 U CN 203688518U CN 201320692901 U CN201320692901 U CN 201320692901U CN 203688518 U CN203688518 U CN 203688518U
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- tube body
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Abstract
The utility model provides a test unit for coking for sand control, which comprises a core barrel, an insulation sleeve and an igniter, wherein the core barrel is arranged in the insulation sleeve, and the igniter is arranged in the core barrel; the core barrel comprises a barrel body, an upper plug and a lower plug, and the upper plug and the lower plug are arranged at two ends of the barrel body; the insulation sleeve comprises a vacuum insulation cylinder, an upper blind flange and a lower blind flange, and the upper blind flange and the lower blind flange can seal two ends of the vacuum insulation cylinder; the upper plug is provided with an air inlet pipe which can extend to the outer part of the upper blind flange, and the lower plug is provided with an oil outlet pipe which can extend to the outer part of the lower blind flange. The test unit for coking for sand control can solve the insulation problem in the test process. After a test, under the condition without destroying the core barrel, the condition in the core barrel after combustion can be observed, and a coke layer is sampled.
Description
Technical field
The utility model relates to combustion (of oil) in site simulation test device, particularly a kind of coking function sand prevention testing device.
Background technology
China's loose sand oil accumulation distribution range compared with wide, reserves are large, output occupies an important position.The main cause that this type of oil reservoir shakes out is because oil reservoir is loose cementing sandstone.In addition, at mid-late oilfield development, because long-term injecting water or gas injecting mining also can destroy reservoir skeleton greatly, cause sand production.The harm of sand production is mainly manifested in three aspects: one, sand buries payzone, causes oil well reduce or stop production; Two, the sand grains of high speed, causes ground and underground equipment aggravation abrasion; Three, shake out and cause stratum in debt and cave in, cause casing failure that oil well is scrapped etc.Sand production, causes oil well output to subtract greatly, and operating cost increases sharply, and economic loss is serious.Sand production is one of oil-field development urgent need to solve the problem.
It is high that the advantage of coking sand control technique is to be applicable to super viscous crude understressed sand, the interior noresidue of well and success ratio.In addition, still have quite high permeability with the immediate vicinity of wellbore of this technical finesse, after coking, the permeability of sandstone approximately only reduces by 30% than original permeability.At present, the chemical sand control method of one of conventional anti-sand method, while adopting synthetic resin Reinforcing Shaft, permeability can reduce by 90%.
Coking sand control technique is to provide heat energy to the oil reservoir under stratum, impels crude oil in sand grain surface coking, forms the coking thin layer with bond.Mainly contain the solid sand of heat injection air and the solid two kinds of methods of sand of short-term combustion (of oil) in site.Because being directly provides heat energy to oil reservoir, therefore, on affecting the factor of On Efficiency of Warm-air Coking And Sand Control, the parameters such as the such as reservoir condition of coking temperature, scorch time, air Injection speed, adaptation, need to carry out deep study and analysis by a large amount of tests.Existing test unit is two problems below carrying out in coking sand control process of the test existing:
1, existing test unit is to adopt the method for filling thermal insulation medium and basket external compensation thermopair to be incubated, heat insulation effect is undesirable, differ larger with the truth in coking sand control technique implementation process, and in process of the test, operation is comparatively complicated.
2, existing test unit completes after test, need to destroy basket and just can observe the situation in the rear basket of burning, and in this process, coke layer also can be thereupon destroyed, make to obtain the partial parameters of coke layer, affected the accuracy of test figure.In addition, each test all needs to destroy basket, causes experimentation cost higher.
Utility model content
For the problem of above-mentioned prior art, the purpose of this utility model is to provide a kind of coking function sand prevention testing device, can solve the insulation problem in this process of the test, situation, the STRENGTH ON COKE layer after test, in the situation that not destroying basket, observed after rock core combustion inner pipe sample.
In order to achieve the above object, the utility model proposes a kind of coking function sand prevention testing device, comprise basket, insulation sleeve and lighter, described basket is located in described insulation sleeve, and described lighter is located in described basket; Described basket comprises tube body and is arranged on upper plug head, the lower end cap at described tube body two ends; Described insulation sleeve comprises vacuum heat-preserving cylinder and can seal upper flange lid, the lower flange lid at described vacuum heat-preserving cylinder two ends; Described upper plug head is provided with the draft tube that can extend to described upper flange lid outside, and described lower end cap is provided with the flowline that can extend to described lower flange lid outside.
Further, in the annular space between described tube body and described vacuum heat-preserving cylinder, be provided with aluminium foil heat insulation cylinder.
Further, the outside of described tube body is provided with at least one annular space heating tube.
Further, described tube body is evenly equipped with multiple body temperature probes and at least 3 body pressure measurement probes vertically, and described in adjacent two, the interval of body temperature probe is less than 5cm; One annular space temperature probe extends to the outside annular space of described tube body.
Further, described in adjacent two body temperature probe be spaced apart 3cm.
Further, a muff is set in the outer wall of described vacuum heat-preserving cylinder removedly.
Further, the tube body of described basket is to dock removedly by the first halfbody and the second halfbody the split type structure forming; Described upper plug head and described lower end cap respectively removedly sealing shroud be located at the two ends of described tube body.
Further, between described upper plug head, described lower end cap and the outside wall surface of described tube body, be respectively equipped with O-ring seal, the two ends of described O-ring seal are respectively equipped with packing ring, the two ends of described tube body are equipped with respectively can dismantle with described upper plug head, described lower end cap the gland being connected, and described gland has one and can extend between described upper plug head or lower end cap and described tube body and be resisted against the extension of described O-ring seal one end packing ring.
Further, the tube wall of described the first halfbody and the second halfbody joint formation fillet that stretches out respectively, described fillet is convexly set in the outside wall surface of described tube body along the length direction of described tube body, described upper plug head and described lower end cap lay respectively at the two ends of described fillet.
Further, between described fillet and the outside wall surface of described the first halfbody or described the second halfbody, be provided with more than one reinforcing block; On the tube wall of described the first halfbody and described second one of them joint of halfbody, be provided with seal groove along tube body length direction, in described seal groove, be provided with sealing strip.
Compared with prior art, coking function sand prevention testing device of the present utility model has following beneficial effect:
(1) the utility model adopts vacuum heat-preserving cylinder, thereby basket is incubated to high insulating effect and simple to operate; In annular space between vacuum heat-preserving cylinder and basket, the utility model is also provided with aluminium foil heat insulation cylinder, can realize usable reflection to the heat radiation of tube body; The utility model has also set up at this vacuum heat-preserving cylinder the muff that can dismantle outward, effectively reduces vacuum heat-preserving cylinder and carries out heat conduction to the external world.
By above-mentioned vacuum heat-preserving cylinder, aluminium foil heat insulation cylinder and the muff that can dismantle, the utility model has been realized the comprehensive insulation to basket, thereby convection heat transfer' heat-transfer by convection and radiant heat transfer are effectively stoped, and significantly reduce heat transfer by heat conduction, there is good heat insulation effect, and simple in structure, be easy to realize.
(2) the utility model is that the oil-sand preparing is inserted and re-used annular space heating tube after basket oil-sand is carried out to preheating, compared to prior art, the crude oil after heating and sand are inserted to basket after mixing and stirring again, not only simple to operate, can also make the temperature of oil-sand in the time carrying out the anti-sand test of coking more accurate, make test findings more approaching true.
(3) what the utility model adopted is dissection type basket, after off-test, only need take the tube body being formed by two halfbodies apart, can be observed the actual state after burning in basket, and can take out easily the coke layer that burning produces, to measure the parameter such as intensity, factor of porosity, permeability of coke layer.
(4) because basket of the present utility model can be reused, in the time carrying out testing next time, re-assembly basket, effectively reduce experimentation cost; In addition, in process of the test, need not fill thermal insulation medium and pipe external compensation thermopair is realized insulation, operate more simply, the time decreased that test is prepared, has improved test efficiency.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model basket;
Fig. 3 is the local enlarged diagram of the utility model basket bottom;
Fig. 4 is the vertical view of the utility model basket split type structure tube body;
Fig. 5 is the side view of the utility model basket split type structure tube body;
Fig. 6 is the structural representation of another embodiment of the utility model.
Description of reference numerals:
1-basket, 10-tube body, 11-upper plug head, 110-draft tube,
12-lower end cap, 120-flowline, 101-the first halfbody, 1001-fillet,
102-the second halfbody, 1002-fillet, 1003-reinforcing block, 1004-seal groove,
1005-sealing strip, 1006-bolt, 103-gland, 1031-extension,
104-O-ring seal, 1040-packing ring, 105-sand grid, 161-body temperature probe,
162-body pressure measurement probe; 2-is incubated sleeve, 20-vacuum heat-preserving cylinder, and 21-upper flange lid,
22-lower flange lid, 23-aluminium foil heat insulation cylinder, 24-annular space heating tube, 25-muff,
26-annular space temperature probe; 3-lighter.
Embodiment
Understand for technical characterictic of the present utility model, object and effect being had more clearly, now contrast accompanying drawing embodiment of the present utility model is described.
As Figure 1-Figure 5, the utility model proposes a kind of coking function sand prevention testing device, comprise basket 1, insulation sleeve 2 and lighter 3, basket 1 is located in insulation sleeve 2, and lighter 3 is located in basket 1 and can be lighted a fire in the outside of basket 1.Basket 1 comprises tube body 10 and is arranged on upper plug head 11 and the lower end cap 12 at tube body 10 two ends, upper plug head 11 is provided with the draft tube 110 that can extend to upper flange lid 21 outsides, and lower end cap 12 is provided with the flowline 120(that can extend to lower flange lid 22 outsides referring to Fig. 2).Insulation sleeve 2 comprises vacuum heat-preserving cylinder 20 and is arranged on upper flange lid 21, the lower flange lid 22 at vacuum heat-preserving cylinder 20 two ends.The opening of upper plug head 11 and lower end cap 12 can extend to the outside of upper flange lid 21, lower flange lid 22.Vacuum heat-preserving cylinder 20 is enclosed within the outside of basket 1, utilizes the performance of its vacuum heat-preserving, has effectively stoped basket 1 and extraneous convection heat transfer' heat-transfer by convection, thereby has guaranteed the insulation effect of the utility model coking function sand prevention testing device to basket 1.
In a specific embodiment as shown in Figure 1, lower flange lid 22 contacts are covered on lower end cap 12, and upper plug head 11 contacts are covered on upper flange lid 21, and basket 1 can be closely arranged in insulation sleeve 2; In another specific embodiment as shown in Figure 6, be that the basket assembling 1 entirety is closely inserted in insulation sleeve 2, that is, upper flange lid 21 and lower flange lid 22 respectively contact are covered on upper plug head 11 and lower end cap 12; In order to improve basket 1 and the sealing that is connected of insulation sleeve 2, on the one or both sides joint face being connected with upper flange lid 21 at upper plug head 11, can offer seal groove and insert sealing strip on the one or both sides joint face of lower end cap 12 and lower flange lid 22.Lighter 3 is arranged in basket, and is fixedly connected with upper plug head 11, and the cable of lighter 3 is drawn from upper plug head 11.
For the heat that reduces basket 1 runs off, in annular space between tube body 10 and vacuum heat-preserving cylinder 20, be provided with aluminium foil heat insulation cylinder 23, the external diameter of this aluminium foil heat insulation cylinder 23 is slightly less than the internal diameter of vacuum heat-preserving cylinder 20, utilize the effect of aluminium foil heat insulation cylinder 23 reflective thermal radiations, stop the heat of basket 1 to distribute by the mode of radiation, further improved the heat-insulating property of the utility model coking function sand prevention testing device.One preferred embodiment in, the length of aluminium foil heat insulation cylinder 23 is identical with the length of vacuum heat-preserving cylinder 20, the two ends of aluminium foil heat insulation cylinder 23 can be resisted against respectively upper flange lid 21 and lower flange lid 22.
Also be arranged with the muff 25 that can dismantle at vacuum heat-preserving cylinder 20 outer walls, thereby further reduced tube body 10 to extraneous conduction of heat.This muff 25, in can being, be provided with the cloth cover of insulation material (for example glass fibre), be wrapped in the outer wall of vacuum heat-preserving cylinder 20 by velcro, slide fastener, bandage etc., in process of the test, can be according to the needs of insulation, dismounting or installation muff 25 comparatively expediently.
From the above, by the comprehensive insulation of vacuum heat-preserving cylinder 20, aluminium foil heat insulation cylinder 23 and the muff 25 that can dismantle, coking function sand prevention testing device of the present utility model can effectively stop convection heat transfer' heat-transfer by convection and radiant heat transfer, has significantly reduced heat transfer by heat conduction, and basket 1 is had to good heat insulation effect.
The utility model adopts after the oil-sand configuring is inserted to basket 1 and again oil-sand is carried out to preheating, so that the temperature of oil-sand is more accurate when test, test findings is more approaching true.A feasible technical scheme is, in the annular space between tube body 10 and vacuum heat-preserving cylinder 20, the annular space heating tube 24 of an oil-sand of filling for preheating basket 1 to be at least set.In the situation that being provided with aluminium foil heat insulation cylinder 23, annular space heating tube 24 is located in the annular space between tube body 10 and aluminium foil heat insulation cylinder 23.
On tube body 10, be evenly equipped with multiple body temperature probes 161 and at least 3 body pressure measurement probes 162, to test and to record the temperature and pressure of basket 1 inside.The number of body temperature probe and body pressure measurement probe is more, and the data of collection are more comprehensive, and as required, the interval of adjacent two temperature probes 161 can be 3-5cm.In a preferred embodiment, adjacent two temperature probes 161 be spaced apart 3cm.In addition,, in order to test and record the temperature of basket 1 outside, in the annular space between tube body 10 and vacuum heat-preserving cylinder 20, annular space temperature probe 26 is set; In the situation that being provided with aluminium foil heat insulation cylinder 23, annular space temperature probe 26 is located in the annular space between tube body 10 and aluminium foil heat insulation cylinder 23.
As Figure 2-Figure 5, the tube body 10 that the basket 1 of coking function sand prevention testing device of the present utility model adopts, can be to dock removedly by the first halfbody 101 and the second halfbody 102 split type structure forming, by upper plug head 11 and lower end cap 12 removedly sealing shroud be located at the two ends of tube body 10.After having tested, dismounting upper plug head 11 and lower end cap 12, open the first halfbody 101 and the second halfbody 102, can be observed the actual state after the interior burning of tube body 10, and can take out easily the coke layer that burning produces, thereby measure the parameters such as the intensity, factor of porosity, permeability of coke layer, with the more accurate effect that must assess coking sand control.Owing to not destroying basket 1 in this process, while test, re-assembly basket reusable next time.
For the tube body 10 that improves split-type structure sealing in test, between the outside wall surface of upper plug head 11, lower end cap 12 and tube body 10, be respectively equipped with O-ring seal 104, and the two ends of tube body 10 are also arranged with gland 103 and seal with the two ends of the tube body 10 to split type structure.Specifically, two ends at tube body 10 are arranged with respectively gland 103, two glands 103 are connected with upper plug head 11, lower end cap 12 respectively removedly, and each gland 103 all has one and can extend between upper plug head 11 or lower end cap 12 and tube body 10 and be resisted against the extension 1031 of O-ring seal 104.The extension 1031 of gland 103 is resisted against O-ring seal 104, it is full of and seal upper plug head 11 and tube body 10 between or between lower end cap 12 and tube body 10, form annular space, squeezing action O-ring seal 104 being produced by gland 103 can be tightly connected with tube body 10 upper plug head 11, lower end cap 12.In order to share the extruding force that O-ring seal 104 bears, the life-span of improving O-ring seal 104, two ends at O-ring seal 104 can also arrange packing ring 1040, make the extension 1031 of gland 103 can be resisted against the packing ring (referring to Fig. 3) that is arranged on O-ring seal 104 and gland 103 corresponding end.
In a specific embodiment, the tube wall of the first halfbody 101 of tube body 10, the joint of the second halfbody 102 stretches out respectively and forms fillet 1001, fillet 1002, and fillet 1001 and fillet 1002 are along the outside wall surface that is axially convexly set in tube body 10 of tube body 10.The fillet 1001 of the first halfbody 101 can link together (referring to Fig. 4) by the bolt of even setting 1006 with the fillet 1002 of described the second halfbody 102, after facilitating test, dismantles.Upper plug head 11, lower end cap 12 lay respectively at the two ends of fillet 1001,1002, and the end of close as far as possible fillet 1001 and fillet 1002, to improve the sealing property at split type structure tube body 10 fillet places.
In order to strengthen the strength of joint of fillet 1001 and fillet 1002, in the outside wall surface of fillet 1001 and the first halfbody 101, or be at least welded with a reinforcing block 1003 between fillet 1002 and the outside wall surface of the second halfbody 102.Reinforcing block 1003 is not limited to only be suitable for the mode of welding, also can be one-body molded with the first halfbody 101 or the second halfbody 102; In the time that fillet 1001 and fillet 1002 are provided with reinforcing block 1003, the reinforcing block that is arranged on fillet 1001 can be corresponding one by one with the position of the reinforcing block that is arranged on fillet 1002, in the time that reinforcing block 1003 is more than one (referring to Fig. 4), be evenly distributed between whole fillet and tube body 10 outside wall surface.
As shown in Figure 5, in order further to improve the sealing of tube body 10, on the wherein one or both sides tube wall of the first halfbody 101, the second halfbody 102 corresponding connections, be provided with the seal groove 1004 of perforation along tube body 10 length directions, in seal groove 1004, be provided with sealing strip 1005.
In a feasible technical scheme, the lower end cap of coking function sand prevention testing device of the present utility model 12 is also provided with sand grid 105 with the junction, end of tube body 10, in order to the sand grains in stay pipe body 10 and play sand block effect.The inner concave of lower end cap 12 forms and is beneficial to the rounding conical surface that fluid flows out.
Further illustrate by reference to the accompanying drawings the principle of work of coking function sand prevention testing device of the present utility model below:
First connect the first halfbody 101 and the second halfbody 102 forms tube body 10, with the bottom of lower end cap 12 sealed tube bodies 10; Again the oil-sand preparing is inserted to compacting from the upper end of basket 1, with the top of upper plug head 11 sealed tube bodies 10; Along the tube body uniform body temperature probe 161 of 10 outer tube wall and body pressure measurement probe 162; Mounted basket 1 is put into the vacuum heat-preserving cylinder 20 that connects lower flange lid 22, inserted aluminium foil heat insulation cylinder 23, install blind flange 21; In annular space from lower flange lid 22 outside basket 1, insert annular space heating tube 24 and annular space temperature probe 26.
Then, start test.Start annular space heating tube 24, the temperature of basket 1 is heated to stratum initial temperature; According to the flow velocity of testing requirements, inject air from draft tube 110; Start and set the lighter 3 of coking temperature, by the air heat of injection to the hot-air with setting coking temperature; Inject after hot-air a period of time continuously, stop heating and inject air, that injects hot-air is scorch time (process of the test belongs to known technology, repeats no more) T.T..
Off-test, after basket 1 cooling down, takes this device apart, open basket 1, observe the situation after oil-sand coking, adopt the rock core of core sampler from diverse location drills through coking coke layer, measure intensity and the permeability of this rock core, thereby evaluate the solid sand effect of coking.
The foregoing is only the schematic embodiment of the utility model, not in order to limit scope of the present utility model.Any those skilled in the art, is not departing from equivalent variations and the modification under the prerequisite of design of the present utility model and principle, done, all should belong to the scope of the utility model protection.And it should be noted that, each ingredient of the present utility model is not limited in above-mentioned overall applicability, each technical characterictic of describing in instructions of the present utility model can select one to adopt separately or select the multinomial use that combines according to actual needs, therefore, the utility model has naturally been contained other combinations relevant with this case innovative point and specifically application.
Claims (10)
1. a coking function sand prevention testing device, comprises basket, insulation sleeve and lighter, and described basket is located in described insulation sleeve, and described lighter is located in described basket; It is characterized in that: described basket comprises tube body and is arranged on upper plug head, the lower end cap at described tube body two ends; Described insulation sleeve comprises vacuum heat-preserving cylinder and can seal upper flange lid, the lower flange lid at described vacuum heat-preserving cylinder two ends; Described upper plug head is provided with the draft tube that can extend to described upper flange lid outside, and described lower end cap is provided with the flowline that can extend to described lower flange lid outside.
2. coking function sand prevention testing device according to claim 1, is characterized in that, in the annular space between described tube body and described vacuum heat-preserving cylinder, is provided with aluminium foil heat insulation cylinder.
3. coking function sand prevention testing device according to claim 1, is characterized in that, the outside of described tube body is provided with at least one annular space heating tube.
4. coking function sand prevention testing device according to claim 1, is characterized in that, described tube body is evenly equipped with multiple body temperature probes and at least 3 body pressure measurement probes vertically, and described in adjacent two, the interval of body temperature probe is less than 5cm; One annular space temperature probe extends to the outside annular space of described tube body.
5. coking function sand prevention testing device according to claim 4, is characterized in that, described in adjacent two, body temperature probe is spaced apart 3cm.
6. coking function sand prevention testing device according to claim 1, is characterized in that, a muff is set in the outer wall of described vacuum heat-preserving cylinder removedly.
7. according to the coking function sand prevention testing device described in claim 1-6 any one, it is characterized in that, the tube body of described basket is to dock removedly by the first halfbody and the second halfbody the split type structure forming; Described upper plug head and described lower end cap respectively removedly sealing shroud be located at the two ends of described tube body.
8. coking function sand prevention testing device according to claim 7, it is characterized in that, between described upper plug head, described lower end cap and the outside wall surface of described tube body, be respectively equipped with O-ring seal, the two ends of described O-ring seal are respectively equipped with packing ring, the two ends of described tube body are equipped with respectively can dismantle with described upper plug head, described lower end cap the gland being connected, and described gland has one and can extend between described upper plug head or lower end cap and described tube body and be resisted against the extension of described O-ring seal one end packing ring.
9. coking function sand prevention testing device according to claim 7, it is characterized in that, the tube wall of described the first halfbody and the second halfbody joint formation fillet that stretches out respectively, described fillet is convexly set in the outside wall surface of described tube body along the length direction of described tube body, described upper plug head and described lower end cap lay respectively at the two ends of described fillet.
10. coking function sand prevention testing device according to claim 9, is characterized in that, between described fillet and the outside wall surface of described the first halfbody or described the second halfbody, is provided with more than one reinforcing block; On the tube wall of described the first halfbody and described second one of them joint of halfbody, be provided with seal groove along tube body length direction, in described seal groove, be provided with sealing strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320692901.2U CN203688518U (en) | 2013-11-05 | 2013-11-05 | Test unit for coking for sand control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320692901.2U CN203688518U (en) | 2013-11-05 | 2013-11-05 | Test unit for coking for sand control |
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| Publication Number | Publication Date |
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| CN203688518U true CN203688518U (en) | 2014-07-02 |
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|---|---|---|---|
| CN201320692901.2U Expired - Fee Related CN203688518U (en) | 2013-11-05 | 2013-11-05 | Test unit for coking for sand control |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806992A (en) * | 2016-03-17 | 2016-07-27 | 中国石油大学(北京) | Reusable three-dimensional large-size burning experiment device |
| CN113884421A (en) * | 2020-07-03 | 2022-01-04 | 中国石油化工股份有限公司 | Device and method for observing light hydrocarbon dissipated from rock core |
| CN114923768A (en) * | 2022-05-19 | 2022-08-19 | 西南石油大学 | Nondestructive dismounting type high-temperature high-pressure rock core holder device |
| CN113884421B (en) * | 2020-07-03 | 2024-06-04 | 中国石油化工股份有限公司 | Light hydrocarbon observation device and method for core escape |
-
2013
- 2013-11-05 CN CN201320692901.2U patent/CN203688518U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806992A (en) * | 2016-03-17 | 2016-07-27 | 中国石油大学(北京) | Reusable three-dimensional large-size burning experiment device |
| CN113884421A (en) * | 2020-07-03 | 2022-01-04 | 中国石油化工股份有限公司 | Device and method for observing light hydrocarbon dissipated from rock core |
| CN113884421B (en) * | 2020-07-03 | 2024-06-04 | 中国石油化工股份有限公司 | Light hydrocarbon observation device and method for core escape |
| CN114923768A (en) * | 2022-05-19 | 2022-08-19 | 西南石油大学 | Nondestructive dismounting type high-temperature high-pressure rock core holder device |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20211105 |
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| CF01 | Termination of patent right due to non-payment of annual fee |