CN103397872B - The pit shaft analog of racemosus water conservancy diversion moderate leading well - Google Patents
The pit shaft analog of racemosus water conservancy diversion moderate leading well Download PDFInfo
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- CN103397872B CN103397872B CN201310337862.9A CN201310337862A CN103397872B CN 103397872 B CN103397872 B CN 103397872B CN 201310337862 A CN201310337862 A CN 201310337862A CN 103397872 B CN103397872 B CN 103397872B
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Abstract
The invention discloses the pit shaft analog of a kind of racemosus water conservancy diversion moderate leading well.Described pit shaft analog includes casing, pit shaft, single-phase self-suction injection pump and electronic flowmeter；The top of casing is provided with transparent cover plate；Being provided with screen cloth in casing, casing is separated into back-up sand district and water filling district by screen cloth, and back-up sand district is located at the top in water filling district；Pit shaft is located in back-up sand district；One end of pit shaft is provided with outlet, and the bottom of casing is provided with water inlet, is provided with described single-phase self-suction injection pump and buffer tank between water inlet and described outlet；Described water outlet is located at by described electronic flowmeter；Described pit shaft is provided with several through holes.The present invention can carry out the full well section approximate simulation of the nearly well of racemosus water conservancy diversion moderate leading well, the seepage flow of pit shaft and situation of shaking out, it is a miniatures of oil field actual racemosus water conservancy diversion moderate leading well, it is possible to for studying the nearly well percolation law under different branches number, different branches length, different main hole sand control method and sand control parameter.
Description
Technical field
The present invention relates to a kind of sand production pit shaft testing equipment, be specifically related to the pit shaft analog of a kind of racemosus water conservancy diversion moderate leading well.
Background technology
" racemosus water conservancy diversion moderate leading " technology can improve the oil mining benefit of loose sand heavy crude reservoir.This technology utilizes fishbone well, main borehole adopts high-quality screen casing appropriateness sand block completion, Multilateral Wells section then adopts barefoot completion, and field assay shows, single well productivity improves 3～5 times than straight well, more than 20% is improved than horizontal well, but owing to reservoir rock loosens, barefoot interval easily collapses sand plug, this Technology application is successfully one of crucial, it is in that conservative control yield, to give full play to the effect of Multilateral Wells section exposure oil reservoir.The indefinite meeting with seepage flow mechanism of the nearly well limits enforcement and the development of this technology, it is necessary to the nearly well of full pit shaft is shaked out design set of device and pit shaft shakes out, and probes into percolation law simulation., dynamic similarity similar according to physical dimension and flow velocity similarity criterion, the analog of design back-up sand casing and branch horizontal well, by observing branch's hole collapse, the pressure loss measured in horizontal well flow and main borehole and each branch, study the nearly well percolation law of racemosus water conservancy diversion moderate leading well and the production law of well.Current analog and modeling scheme design the Dynamic Similar Laws taken into full account, equal including shear rate and Reynolds number, main borehole, Multilateral Wells and Multilateral Wells structure and angle are considered geometric similarity, but the geometric similarity of flowing and nearly Wellbore Flow in oil reservoir is processed desirable not enough, it will affect the reasonability of analog result and the order of accuarcy of experiment due to the boundary effect of model.
Summary of the invention
It is an object of the invention to provide the pit shaft analog of a kind of racemosus water conservancy diversion moderate leading well, for studying the nearly well flowing law of racemosus water conservancy diversion well, it is adaptable to sand control way choice, sand control efficiency optimization, shake out and the effect of increasing production evaluation of local heating, sand control pollute the mechanism of physical removal method and effect assessment thereof.
The pit shaft analog of a kind of racemosus water conservancy diversion moderate leading well provided by the present invention, it includes casing, pit shaft, single-phase self-suction injection pump and electronic flowmeter；
The top of described casing is provided with transparent cover plate；Being provided with screen cloth in described casing, described casing is separated into back-up sand district and water filling district by described screen cloth, and described back-up sand district is located at the top in described water filling district；
Described pit shaft is located in described back-up sand district；One end of described pit shaft is provided with outlet, and the bottom of described casing is provided with water inlet, is provided with described single-phase self-suction injection pump and buffer tank between described water inlet and described outlet；
Described water outlet is located at by described electronic flowmeter；
Described pit shaft is provided with several through holes.
In above-mentioned pit shaft analog, described pit shaft can be peupendicular hole or Multilateral Wells, and described Multilateral Wells can be divided into main hole, single branch, three branches or quintafurcation.
In above-mentioned pit shaft analog, the middle part of described casing is located at by described screen cloth.
In above-mentioned pit shaft analog, described transparent cover plate can be glass cover-plate, simulates the half nearly well of pit shaft and pit shaft can observe directly fine migration situation by described glass cover-plate when shaking out.
In above-mentioned pit shaft analog, described pit shaft is provided close to described transparent cover plate place.
There is advantages that
The present invention can carry out the full well section approximate simulation of the nearly well of racemosus water conservancy diversion moderate leading well, the seepage flow of pit shaft and situation of shaking out, it it is a miniatures of oil field actual racemosus water conservancy diversion moderate leading well, may be used for studying the nearly well percolation law under different branches number, different branches length, different main hole sand control method and sand control parameter, compared with conventional experimental provision, the present invention more conforms to the practical condition of oil well, experimental result is more accurate, more representative.
Accompanying drawing explanation
Fig. 1 is the profile (pit shaft is located at the top of casing, is only embedded in sand outside half pit shaft) of pit shaft analog of the present invention.
Fig. 2 is the profile middle part of sand (pit shaft be embedded in) of pit shaft analog of the present invention.
Fig. 3 is the top view of vertical bore in pit shaft analog of the present invention.
Fig. 4 is the top view of branch well cylinder in pit shaft analog of the present invention.
In figure, each labelling is as follows: 1 casing, 2 pit shafts, 3 single-phase self-suction injection pumps, 4 electronics afflux gauge, 5 screen clothes, 6 outlets, 7 water inlets, 8 glass cover-plates, 9 water filling districts.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described, but the present invention be confined to following example.
As depicted in figs. 1 and 2, pit shaft analog provided by the invention includes casing 1, pit shaft 2, single-phase self-suction injection pump 3 and electronic flowmeter 4；Wherein, the model of casing 1 is 2000mm × 1000mm × 900mm, is made of stainless steel, gross weight 5000kg after back-up sand；The pit shaft 2 of the present invention includes vertical bore and branch well cylinder, respectively as shown in Figure 3 and Figure 4, wherein, branch well cylinder is divided into main hole, single branch, three branches or quintafurcation, main shaft tube length 1500mm, diameter 32mm, the long 500mm of branch, wellbore arrangement has the through hole (not marking in figure) of several 10mm.It is provided with glass cover-plate 8 at the top of casing 1, simulates the half nearly well of pit shaft and pit shaft can pass through glass cover-plate 8 when shaking out and observe directly fine migration situation.Being provided with screen cloth 5 in casing 1, casing 1 is separated into back-up sand district (not marking in figure) and water filling district 9 by this screen cloth 5, and back-up sand district is located at the top in water filling district 9.Pit shaft 2 is arranged in back-up sand district, the schematic diagram of the top being located at casing 1 for pit shaft 2 shown in Fig. 1, and is only embedded in sand outside half pit shaft；The schematic diagram at the middle part being embedded in sand for pit shaft 2 shown in Fig. 2.Being provided with outlet 6 in one end of pit shaft 2, the bottom of this casing 1 is provided with water inlet 7, and to be provided with single-phase self-suction injection pump 3(between water inlet 7 and outlet 6 be the single-phase self-suction injection pump of JET3-46-1.8, flow 0～3m3/ h, lift 46m, power 1.8kW) and buffer tank (not marking in figure), electronic flowmeter 4(:LUGB1202-P2 type vortex flow sensors, 0～16m it is provided with at outlet 6 place3/ h, pressure 1.6MPa).
The use procedure of pit shaft analog of the present invention is as follows:
In the back-up sand district of casing 1, fill out reservoir sand, and pit shaft 2 is placed in back-up sand district, one end of pit shaft 2 is connected with outlet 6, after reservoir sand fills up back-up sand region, clear glass cover plate 8 is covered on casing 1, and seals.Filling water in water filling district 9, start single-phase self-suction injection pump 3, electronic flowmeter 4 measures the flow at the mouth of a river 6.
Claims (5)
1. the pit shaft analog of a racemosus water conservancy diversion moderate leading well, it is characterised in that:
Described pit shaft analog includes casing, pit shaft, single-phase self-suction injection pump and electronic flowmeter；
The top of described casing is provided with transparent cover plate；Being provided with screen cloth in described casing, described casing is separated into back-up sand district and water filling district by described screen cloth, and described back-up sand district is located at the top in described water filling district；
Described pit shaft is located in described back-up sand district；One end of described pit shaft is provided with outlet, and the bottom of described casing is provided with water inlet, is provided with described single-phase self-suction injection pump and buffer tank between described water inlet and described outlet；
Described water outlet is located at by described electronic flowmeter；
Described pit shaft is provided with several through holes.
2. pit shaft analog according to claim 1, it is characterised in that: described pit shaft is peupendicular hole or Multilateral Wells.
3. pit shaft analog according to claim 1 and 2, it is characterised in that: the middle part of described casing is located at by described screen cloth.
4. pit shaft analog according to claim 1 and 2, it is characterised in that: described transparent cover plate is glass cover-plate.
5. pit shaft analog according to claim 1 and 2, it is characterised in that: described pit shaft is provided close to described transparent cover plate place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310337862.9A CN103397872B (en) | 2013-08-06 | 2013-08-06 | The pit shaft analog of racemosus water conservancy diversion moderate leading well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310337862.9A CN103397872B (en) | 2013-08-06 | 2013-08-06 | The pit shaft analog of racemosus water conservancy diversion moderate leading well |
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| Publication Number | Publication Date |
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| CN103397872A CN103397872A (en) | 2013-11-20 |
| CN103397872B true CN103397872B (en) | 2016-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310337862.9A Active CN103397872B (en) | 2013-08-06 | 2013-08-06 | The pit shaft analog of racemosus water conservancy diversion moderate leading well |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1103802A (en) * | 1975-05-28 | 1981-06-23 | Gerald S. Gau | Simulator for an oil well circulation system |
| WO2010020435A1 (en) * | 2008-08-22 | 2010-02-25 | Services Petroliers Schlumberger | Universal flash system and apparatus for petroleum reservoir fluids study |
| CN201935852U (en) * | 2011-03-06 | 2011-08-17 | 东北石油大学 | Selective water plugging simulation device system of oil well |
| CN202370507U (en) * | 2011-12-06 | 2012-08-08 | 中国石油大学(北京) | Well hole stimulating test device |
| CN102704911A (en) * | 2012-06-01 | 2012-10-03 | 中国石油大学(北京) | Multilateral well experimental model, system and sand filling method |
| CN202718673U (en) * | 2012-06-07 | 2013-02-06 | 中国石油大学(北京) | Visual physical simulation device for bottom-water reservoirs |
| CN202937246U (en) * | 2012-06-01 | 2013-05-15 | 中国石油大学(北京) | Multilateral well experimental model and edge water stimulation device and multilateral well experimental system thereof |
| CN103104254A (en) * | 2013-01-24 | 2013-05-15 | 西南石油大学 | Multifunctional oil reservoir simulation experiment device and experiment method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203463087U (en) * | 2013-08-06 | 2014-03-05 | 中国海洋石油总公司 | Shaft simulation device for multilateral-guide moderate sand control well |
-
2013
- 2013-08-06 CN CN201310337862.9A patent/CN103397872B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1103802A (en) * | 1975-05-28 | 1981-06-23 | Gerald S. Gau | Simulator for an oil well circulation system |
| WO2010020435A1 (en) * | 2008-08-22 | 2010-02-25 | Services Petroliers Schlumberger | Universal flash system and apparatus for petroleum reservoir fluids study |
| CN201935852U (en) * | 2011-03-06 | 2011-08-17 | 东北石油大学 | Selective water plugging simulation device system of oil well |
| CN202370507U (en) * | 2011-12-06 | 2012-08-08 | 中国石油大学(北京) | Well hole stimulating test device |
| CN102704911A (en) * | 2012-06-01 | 2012-10-03 | 中国石油大学(北京) | Multilateral well experimental model, system and sand filling method |
| CN202937246U (en) * | 2012-06-01 | 2013-05-15 | 中国石油大学(北京) | Multilateral well experimental model and edge water stimulation device and multilateral well experimental system thereof |
| CN202718673U (en) * | 2012-06-07 | 2013-02-06 | 中国石油大学(北京) | Visual physical simulation device for bottom-water reservoirs |
| CN103104254A (en) * | 2013-01-24 | 2013-05-15 | 西南石油大学 | Multifunctional oil reservoir simulation experiment device and experiment method thereof |
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| CN103397872A (en) | 2013-11-20 |
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Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC research institute limited liability company Patentee after: China Offshore Oil Group Co., Ltd. Co-patentee after: Southwest Petroleum University Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC Research Institute Patentee before: China National Offshore Oil Corporation Co-patentee before: Southwest Petroleum University |
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Effective date of registration: 20191211 Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC research institute limited liability company Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC research institute limited liability company Patentee before: China Offshore Oil Group Co., Ltd. Co-patentee before: Southwest Petroleum University |