CN102680372B - Pressurizing constant temperature control device and core test system - Google Patents

Pressurizing constant temperature control device and core test system Download PDF

Info

Publication number
CN102680372B
CN102680372B CN201210127537.5A CN201210127537A CN102680372B CN 102680372 B CN102680372 B CN 102680372B CN 201210127537 A CN201210127537 A CN 201210127537A CN 102680372 B CN102680372 B CN 102680372B
Authority
CN
China
Prior art keywords
ebullator
ring
chamber
inlet
core
Prior art date
Application number
CN201210127537.5A
Other languages
Chinese (zh)
Other versions
CN102680372A (en
Inventor
吕伟峰
张祖波
刘庆杰
马德胜
吴康云
严守国
罗蔓莉
Original Assignee
中国石油天然气股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中国石油天然气股份有限公司 filed Critical 中国石油天然气股份有限公司
Priority to CN201210127537.5A priority Critical patent/CN102680372B/en
Publication of CN102680372A publication Critical patent/CN102680372A/en
Application granted granted Critical
Publication of CN102680372B publication Critical patent/CN102680372B/en

Links

Abstract

The embodiment of the invention provides a pressurizing constant temperature control device and a core test system. The core test system comprises a CT (computerized tomography) scanner (1), a core holder (2), an injection pump (3), and the pressurizing constant temperature control device (4). The pressurizing constant temperature control device (4) comprises a motor (410), a gear set (420), a first circulating pump (431), a second circulating pump (432), a first temperature sensor (491), a second temperature sensor (492), a temperature control device (440), one-way valves (451-454), and an annular pressure pump (470). The two circulating pumps with opposite operational directions are used as a double power device, so that the problem that baking ovens and like products cannot be used to perform constant temperature control to core flooding experiments using the CT scanner in the prior art is solved.

Description

A kind of pressurization thermostatic control device and core test system

Technical field

The present invention, about rock core displacement test, particularly about the opertaing device in rock core displacement test, is a kind of pressurization thermostatic control device and core test system concretely.

Background technology

In oil development process, often need to carry out laboratory core displacement test, evaluate oil displacement efficiency and fluid properties.The beginning of the eighties in last century, the people such as Vinegar are incorporated into by CT scan technology the research that the aspects such as reservoir physics have been carried out in petroleum industry field first, CT technology has obtained development rapidly afterwards, and the aspect such as measuring technology conventional in core analysis, the nonuniformity that is widely used in core description, rock core is measured, core sample handling procedure is determined, the measurement of crack quantitative test, online saturation degree, flowing experiment research.Utilize CT scan technology, can carry out visual research to rock core displacement process, obtain the saturation degree of rock core internal flow along journey distributed intelligence, understand deeply oil recovery mechanism, monitoring fluid dispersion and channelling characteristic, understanding polymer flooding to improving sweep area impact, disclose formation damage mechanism etc.

For rock core displacement test, often need Reality simulation reservoir condition, make data result more reliable, and this require whole rock core displacement test to carry out under the condition of constant temperature and high temperature.Singularity due to CT scan, the existence of the metallics of any high atomicity (for example stainless steel) all can cause the deviation of experimental result, therefore, when providing the condition of constant temperature and high temperature for rock core displacement test, cannot use the similar devices such as baking oven of the prior art to carry out thermostatic control to experimental system, also resistance wire cannot be inserted in core holding unit and heats.

Summary of the invention

The embodiment of the present invention provides a kind of pressurization thermostatic control device and core test system, adopt ebullator that two traffic directions are contrary as double motor equipment, solved in prior art and cannot use the similar devices such as baking oven to carry out thermostatically controlled problem to CT scan rock core displacement test system.

One of object of the present invention is, a kind of pressurization thermostatic control device is provided, and comprising:

Motor 410, the gear set 420 being connected with described motor 410, the first ebullator 431, the second ebullator 432 that are connected with described gear set 420 respectively;

Wherein, described the first ebullator 431, the second ebullator 432 traffic directions are contrary, and described motor 410 drives described the first ebullator 431, the mutual reverse direction operation of the second ebullator 432 by described gear set 420;

Described the first ebullator (431) is connected in by the first forward retaining valve (451) inlet (461) that described ring is pressed chamber (460), by the first reverse retaining valve (452), is connected in the liquid outlet (462) that described ring is pressed chamber (460);

Described the second ebullator (432) is connected in by the second forward retaining valve (454) inlet (461) that described ring is pressed chamber (460), by the second reverse retaining valve (453), is connected in the liquid outlet (462) that described ring is pressed chamber (460);

The ring that is provided with inlet 461 and liquid outlet 462 is pressed chamber 460, and described ring presses chamber 460 to be connected with described the first ebullator 431, the second ebullator 432;

The ring press pump 470 of pressing the inlet 461 in chamber 460 to be connected with described ring;

On the inlet 461 in described ring pressure chamber 460, be provided with the first temperature sensor 491, on the liquid outlet 462 in described ring pressure chamber 460, be provided with the second temperature sensor 492, and described the first temperature sensor 491, the second temperature sensor 492 are connected with temperature regulating device 440 respectively.

Wherein, on the first described ebullator 431 and the outer wall of cylinder block of the second ebullator 432, be provided with heating arrangement, described heating arrangement is connected with described temperature regulating device 440.Described heating arrangement is electrical heating wire and/or heating jacket.

Preferably, the first described ebullator 431 is connected in by the first forward retaining valve 451 inlet 461 that described ring is pressed chamber 460, by the first reverse retaining valve 452, is connected in the liquid outlet 462 that described ring is pressed chamber 460.The second described ebullator 432 is connected in by the second forward retaining valve 454 inlet 461 that described ring is pressed chamber 460, by the second reverse retaining valve 453, is connected in the liquid outlet 462 that described ring is pressed chamber 460.

Preferably, described ring press pump 470 is connected in by pipeline the inlet 461 that described ring is pressed chamber 460, is provided with atmospheric valve 480 on described pipeline.Described pipeline is made by PEEK material.Described the first ebullator 431, the second ebullator 432 are conventional piston pump.

One of object of the present invention is, a kind of core test system is provided, and comprising: CT scanner 1, core holding unit 9, injection pump 6 and pressurization thermostatic control device, and wherein said pressurization thermostatic control device comprises:

Motor 410, the gear set 420 being connected with described motor 410, the first ebullator 431, the second ebullator 432 that are connected with described gear set 420 respectively;

Wherein, described the first ebullator 431, the second ebullator 432 traffic directions are contrary, and described motor 410 drives described the first ebullator 431, the mutual reverse direction operation of the second ebullator 432 by described gear set 420;

The ring that is provided with inlet 461 and liquid outlet 462 is pressed chamber 460, and described ring presses chamber 460 to be connected with described the first ebullator 431, the second ebullator 432;

The ring press pump 470 of pressing the inlet 461 in chamber 460 to be connected with described ring;

Near the inlet 461 in described ring pressure chamber 460, be provided with the first temperature sensor 491, near the liquid outlet 462 in described ring pressure chamber 460, be provided with the second temperature sensor 492, and described the first temperature sensor 491, the second temperature sensor 492 are connected with temperature regulating device 440 respectively.

Described core holding unit 9 is made by PEEK material.

Beneficial effect of the present invention is, by sensor group, downhole testing terminal circuit and electromagnetic wave launcher are set on downhole tester, electromagnetic wave is transmitted into Ground Processing System with the form of carrier wave through stratum by the production data of downhole tester collection, and then realized production data under rod-pumped well without cable direct reading test, solved the problem that the cost existing in prior art is high and difficulty of construction is large.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

The structural representation of the embodiment one of a kind of thermostatic control device that pressurizes that Fig. 1 provides for the embodiment of the present invention;

The structural representation of the embodiment two of a kind of thermostatic control device that pressurizes that Fig. 2 provides for the embodiment of the present invention;

The structural representation of the embodiment three of a kind of thermostatic control device that pressurizes that Fig. 3 provides for the embodiment of the present invention;

The structural representation of the embodiment four of a kind of thermostatic control device that pressurizes that Fig. 4 provides for the embodiment of the present invention;

The structural representation of a kind of core test system that Fig. 5 provides for the embodiment of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.

The structural representation of the embodiment one of a kind of thermostatic control device that pressurizes that Fig. 1 provides for the embodiment of the present invention, as shown in Figure 1, described pressurization thermostatic control device comprises:

Motor 410, the gear set 420 being connected with described motor 410, the first ebullator 431, the second ebullator 432 that are connected with described gear set 420 respectively;

Wherein, described the first ebullator 431, the second ebullator 432 traffic directions are contrary, and in concrete embodiment, two ebullators can be realized by conventional piston pump, and the conventional piston pump that is 2.5kW such as power, fills water or oil in conventional piston pump.

Described motor 410 drives described the first ebullator 431, the mutual reverse direction operation of the second ebullator 432 by described gear set 420;

The ring that is provided with inlet 461 and liquid outlet 462 is pressed chamber 460, and described ring presses chamber 460 to be connected with described the first ebullator 431, the second ebullator 432.In coreflooding experiment, all need to add ring by water or oil and press, ring is pressed chamber 460 to be and is full of and adds the space of encircling hydraulic fluid (water or oil).

With the ring press pump 470 that described ring presses the inlet 461 in chamber 460 to be connected, described ring press pump 470 is pressed the constant of the added ring pressure in chamber 460 for maintaining described ring, and in concrete embodiment, ring press pump 470 is realized by conventional high precision piston pump.

On the inlet 461 in described ring pressure chamber 460, be provided with the first temperature sensor 491, on the liquid outlet 462 in described ring pressure chamber 460, be provided with the second temperature sensor 492, and described the first temperature sensor 491, the second temperature sensor 492 are connected with temperature regulating device 440 respectively.Described temperature regulating device 440 is for the temperature of confined pressure liquid being added to the temperature of appointment and keeping temperature constant, and in concrete embodiment, temperature regulating device 440 is realized by resistance wire and the relay of heating.

The structural representation of the embodiment two of a kind of thermostatic control device that pressurizes that Fig. 2 provides for the embodiment of the present invention, as shown in Figure 2, described pressurization thermostatic control device also comprises:

On the first described ebullator 431 and the outer wall of cylinder block of the second ebullator 432, be provided with heating arrangement 433, described heating arrangement 433 is connected with described temperature regulating device 440.In concrete embodiment, described heating arrangement 433 can be electrical heating wire and/or heating jacket and other similar devices.

The structural representation of the embodiment three of a kind of thermostatic control device that pressurizes that Fig. 3 provides for the embodiment of the present invention, as shown in Figure 3, the first described ebullator 431 is connected in by the first forward retaining valve 451 inlet 461 that described ring is pressed chamber 460, by the first reverse retaining valve 452, is connected in the liquid outlet 462 that described ring is pressed chamber 460.The second described ebullator 432 is connected in by the second forward retaining valve 454 inlet 461 that described ring is pressed chamber 460, by the second reverse retaining valve 453, is connected in the liquid outlet 462 that described ring is pressed chamber 460.In concrete practical application, between the first ebullator 431, the second ebullator 432 and inlet 461, liquid outlet 462, all by pressure line, realize.

The structural representation of the embodiment four of a kind of thermostatic control device that pressurizes that Fig. 4 provides for the embodiment of the present invention, as shown in Figure 4, described ring press pump 470 is connected in by pipeline the inlet 461 that described ring is pressed chamber 460, is provided with atmospheric valve 480 on described pipeline.Described atmospheric valve 480 is for pressing the air in chamber 460 fully to get rid of on described ring, makes to be fully full of in cavity liquid.Described pipeline can be realized by pressure line in concrete practical application, by PEEK material, is made.

Introduce the course of work of a kind of thermostatic control device that pressurizes that the embodiment of the present invention provides below.Specifically comprise:

1, utilize heating arrangement that the water in the first ebullator 431, the second ebullator 432 or oil are heated to the required temperature of CT scan rock core displacement test, be generally room temperature to reservoir temperature.

2, start ring press pump 470 to press chamber 460 to pressurize to ring.

3, starter motor 410, motor 410 driven gear groups 420 are rotated and are passed through gear set 420 and drive the first ebullator 431, the second ebullator 432 with mutual reverse direction operation, thereby make in the first ebullator 431 add hydraulic water or oil flows out from the first ebullator 431, by retaining valve 451 and pressure line, enter the inlet 461 that ring is pressed chamber 460, from the liquid outlet 462 in ring pressure chamber 460, flow out subsequently, through pressure line and retaining valve 453, enter in the second ebullator 432, so just realized and added hydraulic water or the circulation of oil between two ebullators and ring pressure chamber.

Piston in two ebullators 431,432 moves to behind one end of piston pump, two ebullators 431,432 are by inverted running, now add the outflow from the second ebullator 432 of hydraulic water or oil, by retaining valve 454 and pressure line, enter the inlet 461 that ring is pressed chamber 460, from the liquid outlet 462 in ring pressure chamber 460, flow out subsequently, through pressure line and retaining valve 452, enter in the first ebullator 431.

Two ebullators 431,432 constantly add the output of hydraulic water or oil, the alternation procedure of suction, assurance adds hydraulic water or oil is pressed in chamber 460 and circulated at ring, utilize ring to press the inlet 461 in chamber 460 and near the first temperature sensor 491 liquid outlet 462, the second temperature sensing 492 and temperature regulating device 440 to control heating-up temperature, realize ring simultaneously and press 460 pairs, chamber rock core to apply confined pressure.

The structural representation of a kind of core test system that Fig. 5 provides for the embodiment of the present invention, as shown in Figure 5, described core test system comprises: CT scanner 1, core holding unit 2, injection pump 3 and pressurization thermostatic control device 4,

Wherein, described CT scanner 1, for launching X-ray scanning rock core.

In described core holding unit 2, place rock core, carry out coreflooding experiment in described rock core, described core holding unit (9) is made by PEEK material.

Described injection pump 3 for filling liquid, is realized by high precision piston pump in concrete embodiment.

The test process of core test system is the common practise of this area, repeats no more herein.

In sum, useful achievement of the present invention is: adopt ebullator that two traffic directions are contrary as double motor equipment, solved in prior art and cannot use the similar devices such as baking oven to carry out thermostatically controlled problem to CT scan rock core displacement test system.

Advantage of the present invention is:

1. creatively adopt ebullator that two traffic directions are contrary as double motor equipment, by filling in ebullator, add hydraulic water or oil and realized the circulation that realizes thermostatted water in core holding unit ring pressing system or oil in pressurization, to have solved the technical matters that high-temperature and high-pressure conditions cannot be provided in CT scan rock core displacement test.

2. creatively at the core holding unit that adopts PEEK material to make, and press the pressure line between chamber to make by PEEK material ebullator and ring, realized the core test system that is particularly suitable for CT scan rock core displacement test, solved the problem that cannot use the metallics of any high atomicity in existing core test system, reduce the deviation of whole rock core displacement test, improved the accuracy of experiment.

In the present invention, applied specific embodiment principle of the present invention and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.

Claims (5)

1. a pressurization thermostatic control device, is characterized in that, described pressurization thermostatic control device comprises:
Motor (410), the gear set (420) being connected with described motor (410), the first ebullator (431), the second ebullator (432) that are connected with described gear set (420) respectively;
Wherein, described the first ebullator (431), the second ebullator (432) traffic direction are contrary, and described motor (410) drives described the first ebullator (431), the second ebullator (432) reverse direction operation mutually by described gear set (420);
The ring that is provided with inlet (461) and liquid outlet (462) is pressed chamber (460), and described ring presses chamber (460) to be connected with described the first ebullator (431), the second ebullator (432);
Described the first ebullator (431) is connected in by the first forward retaining valve (451) inlet (461) that described ring is pressed chamber (460), by the first reverse retaining valve (452), is connected in the liquid outlet (462) that described ring is pressed chamber (460);
Described the second ebullator (432) is connected in by the second forward retaining valve (454) inlet (461) that described ring is pressed chamber (460), by the second reverse retaining valve (453), is connected in the liquid outlet (462) that described ring is pressed chamber (460);
The ring press pump (470) of pressing the inlet (461) in chamber (460) to be connected with described ring, described ring press pump (470) is connected in by pipeline the inlet (461) that described ring is pressed chamber (460), on described pipeline, be provided with atmospheric valve (480), described pipeline is made by PEEK material;
On the inlet (461) in described ring pressure chamber (460), be provided with the first temperature sensor (491), described ring is pressed on the liquid outlet (462) in chamber (460) and is provided with the second temperature sensor (492), and described the first temperature sensor (491), the second temperature sensor (492) are connected with temperature regulating device (440) respectively; On described the first ebullator (431) and the outer wall of cylinder block of the second ebullator (432), be provided with heating arrangement (433), described heating arrangement (433) is connected with described temperature regulating device (440).
2. equipment according to claim 1, is characterized in that, described heating arrangement is electrical heating wire and/or heating jacket.
3. equipment according to claim 1, is characterized in that, described the first ebullator (431), the second ebullator (432) are conventional piston pump.
4. a core test system, it is characterized in that, described core test system comprises: CT scanner (1), core holding unit (2), injection pump (3), also comprise the pressurization thermostatic control device (4) as described in claim 1-3 any one claim.
5. system according to claim 4, is characterized in that, described core holding unit (2) is made by PEEK material.
CN201210127537.5A 2012-04-26 2012-04-26 Pressurizing constant temperature control device and core test system CN102680372B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210127537.5A CN102680372B (en) 2012-04-26 2012-04-26 Pressurizing constant temperature control device and core test system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210127537.5A CN102680372B (en) 2012-04-26 2012-04-26 Pressurizing constant temperature control device and core test system

Publications (2)

Publication Number Publication Date
CN102680372A CN102680372A (en) 2012-09-19
CN102680372B true CN102680372B (en) 2014-09-03

Family

ID=46812635

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201210127537.5A CN102680372B (en) 2012-04-26 2012-04-26 Pressurizing constant temperature control device and core test system

Country Status (1)

Country Link
CN (1) CN102680372B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103076346A (en) * 2012-12-31 2013-05-01 中国石油天然气股份有限公司 Core flooding experimental method based on CT scanning
CN103383378B (en) * 2013-07-19 2014-11-05 东北石油大学 Oil gas adsorption-desorption displacement experiment device
CN103592319B (en) * 2013-10-23 2015-12-02 中国石油天然气股份有限公司 Be applicable to CT scan rock core displacement test and the heating constant-temperature system of energy simulating oil deposit condition
CN105080630B (en) * 2014-04-15 2017-09-15 中国石油化工股份有限公司 The constant temperature system and its experimental method of core holding unit
CN106442519B (en) * 2015-08-06 2019-06-18 中国石油化工股份有限公司 A kind of microcosmic visual exam system of core flooding
CN109470585A (en) * 2018-11-15 2019-03-15 南通华兴石油仪器有限公司 A kind of fluid high-pressure circulation damage evaluation system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201464391U (en) * 2009-04-20 2010-05-12 中国石油天然气股份有限公司 Special core sample analysis temperature-control device
CN101907586A (en) * 2010-06-11 2010-12-08 中国石油天然气股份有限公司 High-temperature high-pressure clamp for testing rock core by nuclear magnetic resonance
CN101949867A (en) * 2010-09-02 2011-01-19 中国海洋石油总公司 Nuclear magnetic resonance imaging gripper
CN102062742A (en) * 2010-12-15 2011-05-18 大连理工大学 Sand-filling type clamp fastener for nuclear magnetic resonance imaging
CN202196178U (en) * 2011-07-29 2012-04-18 中国海洋石油总公司 Basket for NMR imaging instrument
CN202512046U (en) * 2012-04-26 2012-10-31 中国石油天然气股份有限公司 Pressurization constant temperature control device and core test system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2682614A1 (en) * 2007-04-26 2008-11-06 Shell Internationale Research Maatschappij B.V. Formation core sample holder assembly and testing method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201464391U (en) * 2009-04-20 2010-05-12 中国石油天然气股份有限公司 Special core sample analysis temperature-control device
CN101907586A (en) * 2010-06-11 2010-12-08 中国石油天然气股份有限公司 High-temperature high-pressure clamp for testing rock core by nuclear magnetic resonance
CN101949867A (en) * 2010-09-02 2011-01-19 中国海洋石油总公司 Nuclear magnetic resonance imaging gripper
CN102062742A (en) * 2010-12-15 2011-05-18 大连理工大学 Sand-filling type clamp fastener for nuclear magnetic resonance imaging
CN202196178U (en) * 2011-07-29 2012-04-18 中国海洋石油总公司 Basket for NMR imaging instrument
CN202512046U (en) * 2012-04-26 2012-10-31 中国石油天然气股份有限公司 Pressurization constant temperature control device and core test system

Also Published As

Publication number Publication date
CN102680372A (en) 2012-09-19

Similar Documents

Publication Publication Date Title
Bunger et al. Experimental validation of the tip asymptotics for a fluid-driven crack
CN101387598B (en) Rock porosity real-time test device under action of Chemosmosis and creep coupling
CN103558136B (en) Damage of rock and Permeation Test System and method of testing under temperature stress hoop seepage flow coupling
CN102435716B (en) Diagenesis simulation experiment device
Nieto et al. The texture of acidized fracture surfaces: implications for acid fracture conductivity
CN103712863B (en) Based on the device and method of Study on Catastrophe Theory pressure break Rock Damage and crack propagation
CN102059060B (en) Dissolving method of hydrophobically associating polymer and special stretching device thereof
CN101864949B (en) Test device and method for simulating acid etching crack flow guide capability
CN104407103B (en) A kind of multi-angle acid corrosion fracture test set
CN102031874B (en) Intelligent type synchronous prestress tensioning system
CN104950095B (en) Method for quantitatively analyzing core slice visualized displacement
CN2613754Y (en) Preheatable constant-temp. three axial stress core holder
CN103592213B (en) A kind of adaptation many permeability grade distributary acid experimental provision and evaluation method
CN204439561U (en) A kind of urea automatic on-line pick-up unit
CN104500016B (en) Utilize the new method of shale gas reservoir pressing crack construction pressure drop segment data analysis reservoir properties
CN106223928B (en) Sand filling method of multilateral well experimental model
CN102353750B (en) Crude oil low-temperature oxidation experimental device for light oil reservoir air-injection oil extraction
RU2008118152A (en) Methods and systems for determining collector properties of underground layers with already existing cracks
CN104314514B (en) A kind of fractured reservoir Weak Gels profile control performance evaluation visual experimental apparatus and method
CN205277410U (en) Proppant is spread and is put and flow conductivity integration collimated light source device
EP1877755A1 (en) Method and device for evaluating flowing and electric parameters of a porous medium
CN203396653U (en) Dynamic monitoring device for external load deformation and crack extension of rock body
CN105298479B (en) The diagnostic method and its system of pressure break straight well oil-producing (gas) position
CN104854470A (en) Formation core sample holder assembly and testing method for nuclear magnetic resonance measurements
CN105096719A (en) Anisotropic two-dimensional visual sand filling model in simulation layer and two-dimensional visual seepage experimental device

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant