CN106639931A - Wellhead rock debris removing device in well drilling process of supercritical carbon dioxide - Google Patents
Wellhead rock debris removing device in well drilling process of supercritical carbon dioxide Download PDFInfo
- Publication number
- CN106639931A CN106639931A CN201510717625.4A CN201510717625A CN106639931A CN 106639931 A CN106639931 A CN 106639931A CN 201510717625 A CN201510717625 A CN 201510717625A CN 106639931 A CN106639931 A CN 106639931A
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- China
- Prior art keywords
- cyclone separator
- carbon dioxide
- cylinder
- demarcation strip
- gas
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- Legal status (The legal status 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 status listed.)
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 38
- 238000005553 drilling Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 12
- 239000011435 rock Substances 0.000 title abstract description 5
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 238000000151 deposition Methods 0.000 abstract 7
- 239000007789 gas Substances 0.000 description 30
- 239000007788 liquid Substances 0.000 description 10
- 239000012535 impurity Substances 0.000 description 9
- 239000012530 fluid Substances 0.000 description 8
- 239000007787 solid Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 238000004064 recycling Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Abstract
The invention relates to a wellhead rock debris removing device in the well drilling process of supercritical carbon dioxide. The wellhead rock debris removing device comprises a cyclone separator and a depositing tank; the cyclone separator is formed in the mode that a cylinder body and a cone body are connected, a CO2 gas inlet is arranged on the upper part of the cylinder body, the bottom of the cone body is provided with a swirl cover and a collection jar, and a center cylinder is arranged at the upper part of the vertex cover; the depositing tank is connected to the upper part of the cylinder body, a gas filter plate is arranged in the horizontal direction in the middle of the depositing tank, a clean CO2 gas outlet is arranged at the upper part of the depositing tank, and a debris discharge outlet is arranged at the lower part of the depositing tank; the cyclone separator and the depositing tank are separated by an oblique spiral separating plate; the bottom of the center cylinder is communicated to the vertex cover, and after the upper part of the center cylinder penetrate the spiral separating plate, the end opening of the center cylinder penetrates through the depositing tank. According to the wellhead rock debris removing device in the well drilling process of supercritical carbon dioxide, cleaner carbon dioxide gas can be separated during construction compared with the cyclone separator, the structure is simple, the operation is convenient, and the reliability is high.
Description
Technical field
The present invention relates to oil and gas well drilling, geological prospecting and mine drilling rig industry field, more particularly, to well head landwaste remove device in a kind of supercritical carbon dioxide drilling process.
Background technology
The supercritical CO 2 drilling technology that twentieth century end occurs, takes full advantage of supercritical fluid CO 2 while having the specific of the low-viscosity of gas, high diffusivity coefficient and liquid high-density.Supercritical CO 2 drilling well has the characteristics of broken rock speed is fast, and threshold pressure is low, while supercritical fluid CO 2 can provide enough moments of torsion for down-hole motor in drilling process, moreover it is possible to ensure the under-balanced state in shaft bottom；Also be not in hydration and expansion of clay so that the phenomenon such as blocking pore constriction even if supercritical CO 2 enters into reservoir, can effective protection reservoir, entering can increase permeability of reservoir on the contrary behind reservoir, improve oil recovery factor.Therefore, supercritical CO 2 drilling technology is played an important role with its unique advantage in oil and gas development.
The circulatory system of supercritical CO 2 drilling technology is different from all of well system at this stage, the circulatory system needs to realize CO2 fluids by liquid, above-critical state, gaseous state again to the conversion of liquid, in well head, the circulatory system is in gaseous state, and realize recycling, needs isolate solid and liquid impurity from gaseous state CO2 fluids.Cyclone separator used in conventional factory workshop, its clean-up effect is difficult to meet supercritical CO 2 drilling well requirement, if from external advanced four-phase separator equipment, it is not only expensive, and need to carry out equipment the transformation in structure, to adapt to the property feature of fluid phase state；If from multistage purification, the floor space of drilling well site will be significantly increased, cause expense increase, complex operation, to safe construction hidden danger is brought.
The content of the invention
The purpose of the present invention be for prior art exist problem, there is provided one kind effectively can separate solid-state and liquid impurities from CO2 gases, realize CO2 fluids recycling supercritical carbon dioxide drilling process in well head landwaste remove device.
Well head landwaste remove device in a kind of supercritical carbon dioxide drilling process, including cyclone separator 2 and settling tank 1；Cyclone separator 2 is made up of cylinder 9 and the integrated connection of cone 10, and on the top of cylinder 9 CO2 gas accesses 6 are provided with, and the bottom of cone 10 is provided with vortex cover 11 and landwaste collecting tank 12, and the top of vortex cover 11 is provided with central tube 8；Settling tank 1 is connected to the top of cylinder 9, and by-level is provided with clean CO2 gas vents 3 to gas filter plate 4, top is provided with, and bottom is provided with chip removal mouth 5；Separated by inclined spiral demarcation strip 7 between cyclone separator 2 and settling tank 1；Wherein, CO2 gas accesses 6 are located at the bottom in the high site of spiral demarcation strip 7, and chip removal mouth 5 is located at the top of the low points of spiral demarcation strip 7, and the bottom of central tube 8 connects with vortex cover 11, and the top of central tube 8 is through its port after spiral demarcation strip 7 and the insertion of settling tank 1.
Such scheme is further included：
The upper and lower surface of the spiral demarcation strip 7 is screw type.
The cylinder 9 and the inwall of cone 10 of cyclone separator 2 are provided with the unsuccessful drainage plate with spiral demarcation strip 7 forward.
The filter screen hole of described gas filter plate 4 is no more than 5 μm.
It is an advantage of the current invention that：Effectively solid-state and liquid impurities can be separated from CO2 gases, realize the recycling of CO2 fluids.And simple structure, simple to operate, reliability is high, is conducive to saving well site floor space, and the landwaste that can effectively ensure that supercritical CO 2 drilling well is removed.
Description of the drawings
Fig. 1 is the structural representation of the landwaste remove device of the present invention.
Fig. 2 is dynamic schematic diagram of the gaseous state CO2 fluids through the present invention.
Including：1st, settling tank, 2, cyclone separator, 3, cleaning CO2 gas vents, 4th, gas filter plate, 5, chip removal mouth, 6, CO2 gas accesses, 7th, spiral demarcation strip, 8, central tube, 9, cylinder, 10th, centrum, 11, vortex cover, 12, landwaste collecting tank, 13rd, contour stealth, 14, inward eddy, 15, solid and liquid impurities, 16th, uprising gas, 17, solid impurity, 18, cleaning CO2 gases.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention will be further described：
Referring to the drawings 1, well head landwaste remove device in a kind of supercritical carbon dioxide drilling process, including cyclone separator 2 and settling tank 1；Cyclone separator 2 is made up of cylinder 9 and the integrated connection of cone 10, and on the top of cylinder 9 CO2 gas accesses 6 are provided with, and the bottom of cone 10 is provided with vortex cover 11 and landwaste collecting tank 12, and the top of vortex cover 11 is provided with central tube 8；Settling tank 1 is connected to the top of cylinder 9, and by-level is provided with clean CO2 gas vents 3 to gas filter plate 4, top is provided with, and bottom is provided with chip removal mouth 5；Separated by inclined spiral demarcation strip 7 between cyclone separator 2 and settling tank 1；Wherein, CO2 gas accesses 6 are located at the bottom in the high site of spiral demarcation strip 7, and chip removal mouth 5 is located at the top of the low points of spiral demarcation strip 7, and the bottom of central tube 8 connects with vortex cover 11, and the top of central tube 8 is through its port after spiral demarcation strip 7 and the insertion of settling tank 1.
Above-described embodiment is further included：
The upper and lower surface of the spiral demarcation strip 7 is screw type.
The cylinder 9 and the inwall of cone 10 of cyclone separator 2 are provided with the unsuccessful drainage plate with spiral demarcation strip 7 forward.
Described pneumatic filter is made up of staple fibre filter material, and filter screen hole is 5 μm, and housing is made up of firm, moistureproof cardboard frame.
Referring to the drawings 2, one kind that the present invention is provided is applied to well head landwaste remove device in supercritical CO 2 drilling process, and specific implementation process is：
CO2 gases containing solid and liquid impurities are imported between the cylinder 9 and central tube 8 of cyclone separator 2 from CO2 gas accesses 6, the downward contour stealth 13 of rotation is formed in the presence of spiral demarcation strip 7, the solid and liquid impurities 15 for being suspended in contour stealth 13 shift under the influence of centrifugal force wall, and go to the bottom of cone 10 with contour stealth 13, landwaste collecting tank 12 is drained into by vortex cover 11, the gas after preliminary purification forms the inward eddy 14 of rising and through the dispatch of central tube 8 to settling tank 1；Gas is entered after settling tank 1, because cross-sectional area becomes big, gas flow rate is greatly reduced, the solid and liquid impurities do not removed in gas are precipitated under gravity, the solid impurity 17 being settled out sinks on spiral demarcation strip 7, and is transferred to chip removal mouth 5 and excludes, and the CO2 gases of rising are after gas filter plate 4 is dried and filters, pure CO2 gases are obtained, is drained into follow-up equipment by the clean CO2 gas vents 3 at top.Gas filter plate is regularly replaced, it is ensured that equipment is persistently used.
Claims (4)
1. a kind of well head landwaste remove device in supercritical carbon dioxide drilling process, including cyclone separator（2）And settling tank（1）, it is characterised in that：Cyclone separator（2）By cylinder（9）And cone（10）Integrated connection is constituted, in cylinder（9）Top is provided with CO2Gas access（6）, cone（10）Bottom is provided with vortex cover（11）With landwaste collecting tank（12）, vortex cover（11）Top is provided with central tube（8）；Settling tank（1）It is connected to cylinder（9）Top, by-level is to being provided with gas filter plate（4）, top is provided with clean CO2Gas vent（3）, bottom is provided with chip removal mouth（5）；Cyclone separator（2）And settling tank（1）Between pass through inclined spiral demarcation strip（7）Separate；Wherein, CO2Gas access（6）It is located at spiral demarcation strip（7）The bottom in high site, chip removal mouth（5）It is located at spiral demarcation strip（7）The top of low points, central tube（8）Bottom and vortex cover（11）Connection, central tube（8）Spiral demarcation strip is run through on top（7）Its port and settling tank afterwards（1）Insertion.
2. well head landwaste remove device in supercritical carbon dioxide drilling process according to claim 1, it is characterised in that：The spiral demarcation strip（7）Upper and lower surface be screw type.
3. well head landwaste remove device in supercritical carbon dioxide drilling process according to claim 1 and 2, it is characterised in that：Cyclone separator（2）Cylinder（9）And cone（10）Inwall is provided with and spiral demarcation strip（7）Unsuccessful drainage plate forward.
4. landwaste remove device according to claim 1 and 2, it is characterised in that：Described gas filter plate（4）Filter screen hole be no more than 5 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510717625.4A CN106639931A (en) | 2015-10-30 | 2015-10-30 | Wellhead rock debris removing device in well drilling process of supercritical carbon dioxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510717625.4A CN106639931A (en) | 2015-10-30 | 2015-10-30 | Wellhead rock debris removing device in well drilling process of supercritical carbon dioxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106639931A true CN106639931A (en) | 2017-05-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510717625.4A Pending CN106639931A (en) | 2015-10-30 | 2015-10-30 | Wellhead rock debris removing device in well drilling process of supercritical carbon dioxide |
Country Status (1)
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| CN (1) | CN106639931A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001224983A (en) * | 2000-02-16 | 2001-08-21 | Nisshin Flour Milling Co Ltd | Cyclone type dust collecting device |
| CN2501583Y (en) * | 2001-08-03 | 2002-07-24 | 清华同方股份有限公司 | Gas and solid spiral wind separating apparatus capable of reducing wear |
| JP2003210908A (en) * | 2002-01-18 | 2003-07-29 | Makoto:Kk | Cyclone type filter apparatus |
| CN101653345A (en) * | 2008-08-20 | 2010-02-24 | 泰怡凯电器(苏州)有限公司 | Cyclone separator, cyclone separation device and vacuum cleaner having cyclone separation device |
| CN101748980A (en) * | 2008-12-12 | 2010-06-23 | 中国石油大学(北京) | Cyclone separator set for separating and purifying cutting-carrying gas generated by gas drilling |
| CN101804281A (en) * | 2010-04-15 | 2010-08-18 | 无锡世联丰禾石化装备科技有限公司 | Purification device used for removing solid and liquid impurities in gas |
| CN201940139U (en) * | 2011-01-11 | 2011-08-24 | 东瑞（南通）医药科技有限公司 | Vacuum cyclone separation filter |
| CN102438496A (en) * | 2009-03-25 | 2012-05-02 | 韩国能量技术研究院 | Cyclone dust collector |
| CN102652893A (en) * | 2011-03-03 | 2012-09-05 | 钱允兰 | Cyclone separator |
| CN103331216A (en) * | 2013-06-29 | 2013-10-02 | 广东易山重工股份有限公司 | Cyclone dust collection device used on pavement grooving machine |
| CN205172479U (en) * | 2015-10-30 | 2016-04-20 | 中石化石油工程技术服务有限公司 | Well head detritus clearing device among super supercritical carbon dioxide drilling process |
-
2015
- 2015-10-30 CN CN201510717625.4A patent/CN106639931A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001224983A (en) * | 2000-02-16 | 2001-08-21 | Nisshin Flour Milling Co Ltd | Cyclone type dust collecting device |
| CN2501583Y (en) * | 2001-08-03 | 2002-07-24 | 清华同方股份有限公司 | Gas and solid spiral wind separating apparatus capable of reducing wear |
| JP2003210908A (en) * | 2002-01-18 | 2003-07-29 | Makoto:Kk | Cyclone type filter apparatus |
| CN101653345A (en) * | 2008-08-20 | 2010-02-24 | 泰怡凯电器(苏州)有限公司 | Cyclone separator, cyclone separation device and vacuum cleaner having cyclone separation device |
| CN101748980A (en) * | 2008-12-12 | 2010-06-23 | 中国石油大学(北京) | Cyclone separator set for separating and purifying cutting-carrying gas generated by gas drilling |
| CN102438496A (en) * | 2009-03-25 | 2012-05-02 | 韩国能量技术研究院 | Cyclone dust collector |
| CN101804281A (en) * | 2010-04-15 | 2010-08-18 | 无锡世联丰禾石化装备科技有限公司 | Purification device used for removing solid and liquid impurities in gas |
| CN201940139U (en) * | 2011-01-11 | 2011-08-24 | 东瑞（南通）医药科技有限公司 | Vacuum cyclone separation filter |
| CN102652893A (en) * | 2011-03-03 | 2012-09-05 | 钱允兰 | Cyclone separator |
| CN103331216A (en) * | 2013-06-29 | 2013-10-02 | 广东易山重工股份有限公司 | Cyclone dust collection device used on pavement grooving machine |
| CN205172479U (en) * | 2015-10-30 | 2016-04-20 | 中石化石油工程技术服务有限公司 | Well head detritus clearing device among super supercritical carbon dioxide drilling process |
Non-Patent Citations (1)
| Title |
|---|
| 张礼才: "旋风分离器流场优化研究", 《煤矿机械》 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170510 |
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| RJ01 | Rejection of invention patent application after publication |