CN201739776U - On-line density measuring device for oil delivery pipelines - Google Patents
On-line density measuring device for oil delivery pipelines Download PDFInfo
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- CN201739776U CN201739776U CN2010202543315U CN201020254331U CN201739776U CN 201739776 U CN201739776 U CN 201739776U CN 2010202543315 U CN2010202543315 U CN 2010202543315U CN 201020254331 U CN201020254331 U CN 201020254331U CN 201739776 U CN201739776 U CN 201739776U
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Abstract
The utility model provides an on-line density measuring device for oil delivery pipelines. A process main pipeline (6) with a thermostatic electric trace heating and heat preservation part (17) is connected in series in a tested pipeline through a flange 1 (1) and a flange 2 (35) at two outer ends of the process main pipeline (6); a filter 1 (2) and a filter 2 (38), which are arranged in parallel, and a differential pressure transmitter (10), a flow valve (11), a series-connected process valve 6 (23), a side-joint hand-operated sampling valve (14), a side-joint on-line test port 1 (8), a side-joint grounded pressure gauge (12), a side-joint blow down pipeline (7), a sampling pump (3), a series-connected process valve 7 (24), a side-joint on-line test port 2 (37), a side-joint thermal dilatation safety valve (5), an on-line densimeter (4), a side-joint exhaust valve (15), another side-joint blow down pipeline (7), and an intelligent pressure transmitter (9) which are connected in sequence are arranged on the process main pipeline (6) from the inlet; and a meter connection box (16) is connected with an SCADA (supervisory control and data acquisition) system.
Description
Technical field
The utility model is a kind of oil transport pipeline online density measuring device.The detection and the pipe-line system technical field that relate to quality.
Background technique
For the oil transport pipeline online density measuring, technological method was just drawn bypass on the oil transportation main pipe in the past, and sampling pump and densitometer are set in bypass, bypass was incorporated into the mode of main pipe again.
The shortcoming of this kind density measure mode is: 1, the method is not carried out the online compensation of temperature and pressure to density measure, has influenced the validity of densitometry; 2,, cause the fault damage of sampling pump, such detection constantly that just can't be implemented in Linear density because the pipeline medium turbidity test are not high, and impurity that the inside is contained and iron filings often stop up sampling pump; 3, adopt bypass sampling and measuring density mode, be easy to generate thermal expansion of pipeline and superpressure, thereby damage bypass measuring channel and measuring equipment; 4, can't realize the densitometer in-line calibration; 5, because the bypass method of measurement directly is connected with the technology main pipe, cause the loss of the cathodic protection current of pipeline easily, and cathodic protection current impacts to the operation and the validity of density measure easily also; 6, do not have instrument system supervision, can't be implemented in the SCADA system to measuring the detection and the control in loop; 7, do not have drainage, can't realize maintenance equipment; 8, heat is not mixed in insulation, can't realize measuring the open-air setting in loop.
The model utility content
The purpose of this utility model is design a kind of continuity, validity and stability when making the oil transport pipeline online density measuring more be tending towards standardization, modularization, raising online density measuring, make things convenient for operation maintenance, calibrating and realize the oil transport pipeline online density measuring device of monitoring and control in the SCADA system.
The formation of this device as shown in Figure 1, by flange (1) 1, flange (2) 35, magnetic filter (1) 2, magnetic filter (2) 38, sampling pump 3, on-line densimeter 4, thermal expansion safety valve 5, technology main line 6, blowdown pipeline 7, in-line calibration mouth (1) 8, in-line calibration mouth (2) 37, intelligent pressure transmitter 9, intelligent differential pressure transmitter 10, flow switch 11, on the spot pressure gauge 12, a plurality of technology valve, manually sampling cock 14, outlet valve 15, instrument junction box 16, constant temperature electrical heating and be incubated 17, many instrument cables form.Bypass duct is set, the technology main line 6 of one section test of serial connection on the bypass duct on tested pipeline; The constant temperature electrical heating is arranged and be incubated the outlet termination technology valve (11) 28 of 17 technology main line 6, outermost end connection orchid (1) 1, import termination technology valve 13, outermost termination insulated flange (2) 35, technology main line 6 is serially connected in the tested pipeline by flange (1) 1 and flange (2) 35; Setting gradually filter (1) 2 both sides from the technology valve 13 beginning technology main lines 6 of technology main line 6 entrance points respectively is connected in series technology valve (2) 19 and technology valve (4) 21 and respectively is connected in series technology valve (3) 20 and technology valve (5) 22 also filters (1) 2 in parallel and filter (2) 38 front and back with filter (2) 38 both sides differential pressure transmitter 10 is set, flow switch 11, serial connection technology valve (6) 23, the moving sampling cock 14 of other catcher, the side is connected on the technology valve (12) 29 of line calibrating mouth (1) 8, the side connects pressure gauge 12 on the spot, the technology valve (16) 33 of dirty pipeline 7 runs on the side, sampling pump 3, serial connection technology valve (7) 24, the side is connected on the technology valve (13) 30 of line calibrating mouth (2) 37, the thermal expansion safety valve 5 of dirty pipeline 7 runs on the side, technology valve (10) 27, technology valve (8) 25 and on-line densimeter 4, connect technology valve (10) 27 the other ends again after (9) 26 series connection of technology valve, air valve 15 runs on the side, the technology valve (17) 34 of dirty pipeline 7 runs on the side, intelligent pressure transmitter 9; Instrument junction box 16 is connected with the SCADA system.
Described technology valve (8) 25 is with to connect technology valve (10) 27 the other ends after on-line densimeter 4, technology valve (9) 26 are connected again are two technology valves (8) 25, technology valve (9) 26 outer ends of 26 1 sections on technology valve (8) 25, on-line densimeter 4, technology valve (9) in series connection and connect a technology valve (10) 27;
Described sampling pump 3 has instrument cable (4) 42 to meet instrument junction box 16; Intelligent pressure transmitter 9 has instrument cable (5) 43 to meet instrument junction box 16; On-line densimeter 4, flow switch 11, intelligent differential pressure transmitter 10 respectively have instrument cable (3) 41, instrument cable (2) 40, instrument cable (1) 18 to meet instrument junction box 16;
Described magnetic filter (1) 2 is by technology valve (14) the 31 dirty pipeline 7 that runs in, and magnetic filter (2) 38 is by technology valve (15) the 32 dirty pipeline 7 that runs in; Blowdown pipeline 7 has the constant temperature electrical heating and is incubated 39, the outer termination flange (3) 36 of blowdown pipeline 7;
Described in-line calibration mouth (1) 8 and in-line calibration mouth (2) 37 are flange mouth;
Wherein:
Flange (1) 1, flange (2) 35 adopt insulated flange; The flange (3) 36 of the outer end of blowdown pipeline 7 also adopts insulated flange;
On-line densimeter 4, thermal expansion safety valve 5, intelligent pressure transmitter 9, intelligent differential pressure transmitter 10, flow switch 11, on the spot pressure gauge 12, a plurality of technology valve, manually sampling cock 14, outlet valve 15 are all selected city's pin product for use.
The utility model is provided with pressure gauge 12 and manually sampling cock 14 on the spot in sampling pump 3 fronts, on the sampling pump 3 outlet technology main lines 6 thermal expansion safety valve 5 is set, and on the densitometer 4 outlet technology main lines 6 outlet valve 15 is set; The import technology main line 6 and the thermal expansion safety valve 5 of filter (1) 2, filter (2) 38 and sampling pump 3 connect blowdown pipeline 7 simultaneously; The instrument cable (1) 18 that the SCADA system connects by instrument junction box 16, instrument cable (2) 40, instrument cable (5) 43, instrument cable (3) 41, instrument cable (4) 42 are realized the detection of differential pressure transmitter 10, flow switch 11, pressure transmitter 9, on-line densimeter 4 and sampling pump 3 opened, stop control; The import and export of densitometer 3 are provided with in-line calibration mouth (1) 8 and in-line calibration mouth (2) 37.
Adopt the online density measuring device can realize that oil transport pipeline detects constantly at Linear density, have the degree of accuracy height, stable, be convenient to that the SCADA system remote detects and control, be beneficial to many-sided advantages such as Maintenance and Repair in the future, and sledge installing is in the open put, and has saved between occupation of land space and operation.Make pipe-line construction more be tending towards standardization, modularization, hommization, minimizing working procedure, make things convenient for operation maintenance, reduce equipment investment and operating expenses.
The utility model can be realized the on-line measurement of density after adopting the online density measuring device for oil transport pipeline, and reaches degree of accuracy and the stable requirement that improves density measure, has guaranteed the continuity constantly of density measure.The open-air design of this device sledge dress, its security level is IP65, explosive-proof grade EXdIIBT4 satisfies open-air atmosphere and on-the-spot anti-riot requirement fully; Adopt the standard insulated flange to be connected between this device and the process pipe, and be applicable to the operating mode of high pressure, the loss of process pipe cathodic protection current has been avoided in the setting of while insulated flange, also guarantees the degree of accuracy and the stability of density measure; The sampling pump of Sample handling and conveying adopts efficient magnetic force coupling centrifugal pump, does not have to leak and axle envelope maintenance problem; Before the ingress sampling pump of device, be provided with redundant filter, guaranteed the stability and the reliability of the continuous operation of sampling pump; Be provided with the magnetic adsorber on the metal screen in filter, can well adsorb metallic residue and particle in institute's fed sheet of a media, guaranteed the stable operation of filter and sampling pump and prolonged its working life; Import and export at device are provided with the in-line calibration mouth respectively, but examining and determine at Linear density of implement device improved the stability of density measuring equipment operation; External medium cleaning way is adopted in the cleaning of densitometer table, and is with low cost and clean again.In device, be provided with a pressure transmitter and carry out online pressure compensation, utilize the measured temperature of densitometer to carry out online temperature correction, improved the accuracy and the stability of online density measuring; In density measuring equipment, be furnished with relevant emptying, blowdown pipeline and valve, can carry out blowdown, shutoff and emission treatment, be convenient to daily maintenance and maintenance pipeline and the equipment in installing; Be provided with the hot high pressure expansion relief valve in device, when the pipeline superpressure in the device reached the value of releasing of safety valve, the safety valve action was implemented safety protection to the pipeline in installing; Pipeline in the device is provided with constant temperature electrical heating and insulation measure, guarantees that the online density measuring device is open-air to be provided with and in the winter time can proper functioning, satisfies the requirement of calibrating to ambient temperature.
Flow switch 11 is set on the process pipe between sampling pump 3 and the filter, is used for the SCADA system the operation of sampling pump 3 and the detection of fault state; The SCADA system can open, stop controlling sampling pump by the instrument junction box in installing is long-range, and carries out temperature, the pressure compensation calculating of online density, can be presented at Linear density value and mark condition density value simultaneously in the SCADA system; Differential pressure transmitter is set before and after filter is used for the running state that the SCADA system remote detects filter, judge whether filter stops up.
Adopt the online density measuring device can realize that oil transport pipeline detects constantly at Linear density, have the degree of accuracy height, stable, be convenient to that the SCADA system remote detects and control, be beneficial to many-sided advantages such as Maintenance and Repair in the future, and sledge installing is in the open put, and has saved between occupation of land space and operation.Make pipe-line construction more be tending towards standardization, modularization, hommization, minimizing working procedure, make things convenient for operation maintenance, reduce equipment investment and operating expenses.
The utility model is applicable to oil transport pipeline online density measuring mode.Oil transport pipeline online density measuring for long-distance transport pipes engineering, oil-gas field surface engineering, oil depot engineering has huge application space and good economic benefit.
Description of drawings
Fig. 1 oil transport pipeline online density measuring device flow chart
1-flange (1) 2-magnetic filter (1) wherein
3-sampling pump 4-on-line densimeter
5-thermal expansion safety valve 6-technology main line
7-blowdown pipeline 8-in-line calibration mouth (1)
9-intelligent pressure transmitter 10-intelligent differential pressure transmitter
11-flow switch 12-is pressure gauge on the spot
The manual sampling cock of 13-technology valve (1) 14-
15-outlet valve 16-instrument junction box
17-constant temperature electrical heating and insulation 18-instrument cable (1)
19-technology valve (2) 20-technology valve (3)
21-technology valve (4) 22-technology valve (5)
23-technology valve (6) 24-technology valve (7)
25-technology valve (8) 26-technology valve (9)
27-technology valve (10) 28-technology valve (11)
29-technology valve (12) 30-technology valve (13)
31-technology valve (14) 32-technology valve (15)
33-technology valve (16) 34-technology valve (17)
35-flange (2) 36-flange (3)
37-in-line calibration mouth 38-magnetic filter (2)
39-constant temperature electrical heating and insulation 40-instrument cable (2)
41-instrument cable (3) 42-instrument cable (4)
43-instrument cable (5)
Embodiment
Embodiment. this example be in Lanzhou-Zhengzhou-online density measuring device that Changsha processed oil pipeline engineering test is used.The formation of this oil transport pipeline online density measuring device as shown in Figure 1, by flange (1) 1, flange (2) 35, magnetic filter (1) 2, magnetic filter (2) 38, sampling pump 3, on-line densimeter 4, thermal expansion safety valve 5, technology main line 6, blowdown pipeline 7, in-line calibration mouth (1) 8, in-line calibration mouth (2) 37, intelligent pressure transmitter 9, intelligent differential pressure transmitter 10, flow switch 11, on the spot pressure gauge 12, a plurality of technology valve, manually sampling cock 14, outlet valve 15, instrument junction box 16, constant temperature electrical heating and be incubated 17, many instrument cables form.Bypass duct is set, the technology main line 6 of one section test of serial connection on the bypass duct on tested pipeline; The constant temperature electrical heating is arranged and be incubated the outlet termination technology valve (11) 28 of 17 technology main line 6, outermost end connection orchid (1) 1, import termination technology valve 13, outermost termination insulated flange (2) 35, technology main line 6 is serially connected in the tested pipeline by flange (1) 1 and flange (2) 35; From the technology valve 13 of technology main line 6 entrance points, set gradually filter (1) 2 both sides on the technology main line 6 and be connected in series respectively that technology valve (2) 19 and technology valve (4) 21 and filter 38 both sides respectively are connected in series the in parallel and filters (1) 2 of technology valve 20 and technology valve 22 and filter (2) 38 front and back are provided with differential pressure transmitter 10, flow switch 11, serial connection technology valve (6) 23, the moving sampling cock 14 of other catcher, the side is connected on the technology valve (12) 29 of line calibrating mouth (1) 8, the side connects pressure gauge 12 on the spot, the technology valve (16) 33 of dirty pipeline 7 runs on the side, sampling pump 3, serial connection technology valve (7) 24, the side is connected on the technology valve (13) 30 of line calibrating mouth (2) 37, the thermal expansion safety valve 5 of dirty pipeline 7 runs on the side, technology valve (10) 27, technology valve (8) 25 and on-line densimeter 4, connect technology valve (10) 27 the other ends again after (9) 26 series connection of technology valve, air valve 15 runs on the side, the technology valve (17) 34 of dirty pipeline 7 runs on the side, intelligent pressure transmitter 9; Instrument junction box 16 is connected with the SCADA system.
Described sampling pump 3 has instrument cable (4) 42 to meet instrument junction box 16; Intelligent pressure transmitter 9 has instrument cable (5) 43 to meet instrument junction box 16; On-line densimeter 4, flow switch 11, intelligent differential pressure transmitter 10 respectively have instrument cable (3) 41, instrument cable (2) 40, instrument cable (1) 18 to meet instrument junction box 16;
Described magnetic filter (1) 2 is by technology valve (14) the 31 dirty pipeline 7 that runs in, and magnetic filter (2) 38 is by technology valve (15) (15) the 32 dirty pipeline 7 that runs in; Blowdown pipeline 7 has the constant temperature electrical heating and is incubated 39, the outer termination flange (3) 36 of blowdown pipeline 7;
Described in-line calibration mouth (1) 8 and in-line calibration mouth (2) 37 are flange mouth;
Wherein:
Technology main line 6 is Φ 33mm, and blowdown pipeline 7 is Φ 21mm;
Filter (1) 2 and filter (2) 38 redundant settings, the metal screen in filter (1) 2 and the filter (2) 38 is provided with the magnetic adsorber;
The 7835A-A-A-B-A-K-T-A-A-A model that on-line densimeter 4 selects for use EMERSON Britain to produce, pressure rating is Class 900;
Intelligent pressure transmitter 9 is selected Rosemount 2088G4S22A1EDM5Q4 produced in USA ,/2 for use, and " band LCD shows for NPT, Range:0-15MPa;
Intelligent differential pressure transmitter 10 selects for use Taiwan Golden Mountain to produce
200-DPG-G-S-4.0-ZZ-1-SS-T-B-3-1.6KG/CM2-0；
The BF300-GS-3015-C1-B-B-T-10F-Ex-0 that flow switch 11 selects for use Taiwan Golden Mountain to produce, 1 " ANSI 900, Micro Switch;
Electrical tracing and temperature detect switch (TDS) that constant temperature electrical heating and insulation (1) 17 and constant temperature electrical heating and insulation (2) 39 select for use Britain HEAT TRACE to produce, HTL50FSPR;
A plurality of technology valves select that Taiwan Golden Mountain produces for use 1 " ANSI 900RF, CFM8;
Manually sampling cock 14 is selected PR1/1/4 " NPT, the 316SS that German GO company produces for use;
1/2 " NPT, the 6000PSI valve that outlet valve 15 selects for use Taiwan Modentic to produce.
The pressure rating of all process pipelines and equipment satisfies Class 900 requirements; And the sledge that is integrated in 2840mm (wide) 1500mm (deeply) 2300mm (height) is loaded onto.
Need do relevant anticorrosion, antirust processing after the production and processing of whole density measuring equipment sledge dress finishes, all process pipelines and equipment do the constant temperature electrical heating and insulation is handled.
This example is through on probation, the accuracy and the stability of online density measuring have been improved, realized the continuity constantly of density measure, be convenient to the detection and the control of long-range SCADA system, be beneficial to many-sided advantages such as in the future maintenance, maintenance, calibrating, and can realize that the installing of open-air sledge puts, save between occupation of land space and operation.Make pipe-line construction more be tending towards standardization, modularization, hommization, minimizing working procedure, make things convenient for operation maintenance, reduce equipment investment and operating expenses.
Claims (8)
1. an oil transport pipeline online density measuring device is characterized in that it is by flange (1) [1], flange (2) [35], magnetic filter (1) [2], magnetic filter (2) [38], sampling pump [3], on-line densimeter [4], thermal expansion safety valve [5], technology main line [6], blowdown pipeline [7], in-line calibration mouth (1) [8], in-line calibration mouth (2) [37], intelligent pressure transmitter [9], intelligent differential pressure transmitter [10], flow switch [11], pressure gauge [12] on the spot, a plurality of technology valves, manual sampling cock [14], outlet valve [15], instrument junction box [16], constant temperature electrical heating and insulation [17], many instrument cable is formed; The outlet termination technology valve (11) [28] that the technology main line [6] of constant temperature electrical heating and insulation [17] is arranged, outermost end connection orchid (1) [1], import termination technology valve [13], outermost termination insulated flange (2) [35], technology main line [6] is serially connected in the tested pipeline by flange (1) [1] and flange (2) [35]; Setting gradually filter (1) [2] both sides from the technology valve [13] of technology main line [6] entrance point beginning technology main line [6] respectively is connected in series technology valve (2) [19] and technology valve (4) [21] and filter (2) [38] both sides and respectively is connected in series technology valve (3) [20] and technology valve (5) [22] parallel connection also filter (1) [2] and filter (2) [38] front and back are provided with differential pressure transmitter [10], flow switch [11], serial connection technology valve (6) [23], the moving sampling cock [14] of other catcher, the side is connected on the technology valve (12) [29] of line calibrating mouthful (1) [8], the side connects pressure gauge [12] on the spot, the technology valve (16) [33] of dirty pipeline [7] runs on the side, sampling pump [3], serial connection technology valve (7) [24], the side is connected on the technology valve (13) [30] of line calibrating mouthful (2) [37], the thermal expansion safety valve [5] of dirty pipeline [7] runs on the side, technology valve (10) [27], technology valve (8)] 25] and on-line densimeter [4], connect technology valve (10) [27] the other end again after technology valve (9) [26] series connection, air valve [15] runs on the side, the technology valve (17) [34] of dirty pipeline [7] runs on the side, intelligent pressure transmitter [9]; Instrument junction box [16] is connected with the SCADA system.
2. oil transport pipeline online density measuring device according to claim 1 is characterized in that described sampling pump [3] has instrument cable (4) [42] to meet instrument junction box [16]; Intelligent pressure transmitter [9] has instrument cable (5) [43] to meet instrument junction box [16]; On-line densimeter [4], flow switch [11], intelligent differential pressure transmitter [10] respectively have instrument cable (3) [41], instrument cable (2) [40], instrument cable (1) [18] to meet instrument junction box [16].
3. oil transport pipeline online density measuring device according to claim 1, it is characterized in that described magnetic filter (1) [2] by technology valve (14) [31] the dirty pipeline [7] that runs in, magnetic filter (2) [38] is by technology valve (15) [32] the dirty pipeline [7] that runs in; Blowdown pipeline [7] has constant temperature electrical heating and insulation [39], the outer termination flange (3) [36] of blowdown pipeline [7].
4. oil transport pipeline online density measuring device according to claim 1 is characterized in that described in-line calibration mouth (1) [8] and in-line calibration mouth (2) [37] are flange mouth.
5. oil transport pipeline online density measuring device according to claim 1 is characterized in that described flange (1) [1], flange (2) [35] adopt insulated flange; The flange (3) [36] of blowdown pipeline [7] outer end also adopts insulated flange.
6. oil transport pipeline online density measuring device according to claim 1 is characterized in that described sampling pump [3] adopts efficient magnetic force coupling centrifugal pump.
7. oil transport pipeline online density measuring device according to claim 1 is characterized in that the redundant setting of described filter (1) [2] and filter (2) [38], and the metal screen in filter (1) [2] and the filter (2) [38] is provided with the magnetic adsorber.
8. oil transport pipeline online density measuring device according to claim 1 it is characterized in that technology main line [6] and all devices of upward installing thereof all are integrated in sledge and load onto, and pressure rating satisfies Class 900 requirements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202543315U CN201739776U (en) | 2010-07-06 | 2010-07-06 | On-line density measuring device for oil delivery pipelines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202543315U CN201739776U (en) | 2010-07-06 | 2010-07-06 | On-line density measuring device for oil delivery pipelines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201739776U true CN201739776U (en) | 2011-02-09 |
Family
ID=43555051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202543315U Expired - Lifetime CN201739776U (en) | 2010-07-06 | 2010-07-06 | On-line density measuring device for oil delivery pipelines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201739776U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313137A (en) * | 2010-07-06 | 2012-01-11 | 中国石油天然气集团公司 | Oil conveying pipeline on-line density measuring device |
| CN104657900A (en) * | 2013-11-19 | 2015-05-27 | 中国石油天然气股份有限公司 | Regulation and control service support system for oil and gas pipelines and realization method for regulation and control service support system |
-
2010
- 2010-07-06 CN CN2010202543315U patent/CN201739776U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313137A (en) * | 2010-07-06 | 2012-01-11 | 中国石油天然气集团公司 | Oil conveying pipeline on-line density measuring device |
| CN102313137B (en) * | 2010-07-06 | 2013-05-01 | 中国石油天然气集团公司 | Oil conveying pipeline on-line density measuring device |
| CN104657900A (en) * | 2013-11-19 | 2015-05-27 | 中国石油天然气股份有限公司 | Regulation and control service support system for oil and gas pipelines and realization method for regulation and control service support system |
| CN104657900B (en) * | 2013-11-19 | 2018-10-16 | 中国石油天然气股份有限公司 | A kind of oil-gas pipeline regulation and control operational support system and its implementation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110209 Effective date of abandoning: 20130501 |
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| RGAV | Abandon patent right to avoid regrant |