CN204960921U - Shutoff drilling fluid test evaluation appearance - Google Patents
Shutoff drilling fluid test evaluation appearance Download PDFInfo
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- CN204960921U CN204960921U CN201520757363.XU CN201520757363U CN204960921U CN 204960921 U CN204960921 U CN 204960921U CN 201520757363 U CN201520757363 U CN 201520757363U CN 204960921 U CN204960921 U CN 204960921U
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- drilling fluid
- shutoff
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- fluid test
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Abstract
The utility model discloses a shutoff drilling fluid test evaluation appearance, including the crack simulation body and liquid case, the simulation body in crack mainly is in the same place by the sealed closure of many locking bolts, the world is constituteed to complex upper plate and hypoplastron, and upper plate and hypoplastron adopt transparent material to make respectively, and it is wide with the communicating simulation of flow path seam respectively that a drilling fluid flow path and many have been seted up to the two, and each is simulated and stitches wide cross -sectional area difference, the last channel interface of connecting the liquid case that is equipped with of flow path. This shutoff drilling fluid test evaluation appearance can once only simulate the fracture width experiment test of a plurality of yardsticks, and quantitative evaluation shutoff drilling fluid reduces repeatability work to the fissured shutoff effect of different yardsticks, to less crack also can the accurate control, the metamorphosis on in situ observation shutoff in -process shutoff layer simultaneously.
Description
Technical field
The utility model relates to oil and gas industry indoor shutoff experimental evaluation field, specifically a kind of shutoff drilling fluid test evaluation instrument.
Background technology
Can leakage be there is during drilling strata crack in petroleum drilling operation, not only can cause loss of drilling fluid but also can drilling safety be affected.Formation fracture width is generally in multiple size distribution, and such as its some mud shale cracks are only several microns, and crack seam is wide reaches several millimeters, even can arrive Centimeter Level.And concrete formation fracture width and distribution are difficult to understand before brill is met, the method adopted in drilling well adds multistage plugging material before these stratum met by brill, make drilling fluid to the timely shutoff in these cracks, the object reducing leakage, shutoff stabilizing borehole can be reached.Therefore, objective, efficient evaluations drilling fluid just seems particularly important to the plugging effect of the crack width of different scale.
Current petroleum industry indoor shutoff experimental evaluation device can be divided into two classifications: one be fixing a certain yardstick carry out simulation fracture leakage channel, be characterized in by simulating different fracture scale at the backing material cuing open seam core column central filler different-thickness or the seam plate of changing different opening; Two be dynamic change seam wide come simulation fracture leakage channel, be characterized in being advanced by linkage part and transferring regulating gap size to simulate different fracture scale.First kind device can set the very large fracture scale of span, but it is wide to test a seam at every turn, repeatedly will repeat experiment test could determine its plugging effect for same set of drilling fluid system; It is wide that Equations of The Second Kind device can realize the multiple seam of disposable test, but its leakage channel length is very little, drilling fluid cannot be simulated compared with the shutoff situation gradually in long-channel, when fracture scale scope is 0.5-5mm, particularly cannot accurately control for the crack width being less than 0.5mm.And this two classes device all overall package in metallic cavity, in shutoff test process, all directly cannot observe the shutoff situation in leakage channel.
Summary of the invention
The purpose of this utility model is: for the deficiency of above technology, provides a kind ofly once to test multiple different size crack, particularly to accurately to control when testing compared with gap and can the shutoff drilling fluid test evaluation instrument of Real Time Observation crack shutoff situation in test process.
The technical solution adopted in the utility model is:
A kind of shutoff drilling fluid test evaluation instrument, comprise results of fracture simulation body and fluid box, described results of fracture simulation body is combined primarily of many lock bolt dense blocks, the world forms to the upper plate coordinated and lower plate, described upper plate and lower plate adopt transparent material to make respectively, offer a drilling fluid flow channel between the two and many simulations communicated with flow channel are respectively stitched wide, the cross-sectional area difference that each bar simulation seam is wide, described flow channel is provided with the channel interface connecting fluid box.
Described many simulation seams are wide respectively perpendicular to flow channel.
Described flow channel and the wide end of simulation seam are respectively equipped with stop valve.
Described stop valve is provided with drilling fluid reclamation pipe.
Described flow channel and simulation seam wide beyond upper plate and lower plate between be provided with flexible seal ring.
Described lock bolt is provided with metal splint in the region that installs of upper plate and lower plate, and described metal splint splits the surface at upper and lower plate.
Described fluid box is connected on the channel interface of flow channel by carrier pipe, and described carrier pipe is provided with stop valve.
Described fluid box is connected with nitrogen cylinder by pressurization interface.
Described fluid box is provided with pressure meter.
The beneficial effects of the utility model are:
The crack width of the multiple different scale of the utility model disposable simulation of energy carries out experiment test, and quantitative assessment shutoff drilling fluid, to the plugging effect in different scale crack, reduces repetitive operation; Also can accurately control less crack, the metamorphosis of plugged zone in simultaneously Real Time Observation shutoff process.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the utility model.
Fig. 2 is that the A of Fig. 1 is to schematic diagram.
Number in the figure represents: 1-upper plate, 2-lower plate, 3-lock bolt, and 4-pressurizes interface, 5-fluid box, 6-stop valve, 7-flow channel, and 8-simulation seam is wide, 9-nitrogen cylinder, 10-carrier pipe, 11-channel interface, 12-metal splint, 13-stop valve.
Detailed description of the invention
As depicted in figs. 1 and 2, the utility model comprises results of fracture simulation body and fluid box 5, wherein the upper plate 1 that matched by direction, the world of results of fracture simulation body and lower plate 2 form, for making tester more directly perceived and inner shutoff situation can be observed directly in experimentation, therefore its upper plate 1 and lower plate 2 adopt organic glass material, offer the flow channel 7 that a groove forms drilling fluid between the upper and lower plates, flow channel 7 tail end is provided with stop valve 13, lower plate 2 processes the simulation seam of different scale, and wide 8 some (such as simulation seam widely can be processed as 0.01mm respectively, 0.1mm, 1mm, 3mm, 5mm, meet the shutoff experiment needs of different scale), each simulation seam wide 8 relatively flowing channel vertical is arranged, head end is connected with flow channel, tail end (outlet) is equipped with corresponding stop valve 13, and flow channel 7 and each bar simulation seam wide 8 stop valve 13 on drilling fluid reclamation pipe is all installed, the convenient wastage reclaiming drilling fluid and measure drilling fluid, flow channel 7 and simulation seam wide 8 beyond upper plate and lower plate between be provided with " O " shape sealing ring, upper plate and lower plate lock bolt 3 fastening, for increasing lifting surface area, be provided with metal splint 12 installing in region of lock bolt, this metal splint is separately positioned on the surface of upper and lower plate, it is outside that fluid box 5 is arranged on upper and lower plate, shutoff drilling fluid is constantly provided to flow channel, this fluid box 5 is connected on the channel interface 11 of flow channel by a carrier pipe 10, carrier pipe 10 is provided with stop valve 6, fluid box 5 top is provided with pressurization interface 4, pressurization interface is connected with nitrogen cylinder 9, and fluid box side is provided with a pressure meter.
Wide all stop valves are stitched in stop valve and the different scale simulation of first closing flow channel end during experiment, shutoff drilling fluid is loaded again in fluid box, supercharging is carried out by pressurization interface access nitrogen, when the pressure of fluid box reaches certain standard, open the stop valve below fluid box, then open and want the simulation tested to stitch wide outlet shutoff valve, shutoff situation is observed by transparent passage, experiment can be carried out successively to difference simulation seam is wide, also can open all slits to test simultaneously, by being arranged on the drilling fluid reclamation pipe of flow channel and the wide tail end of each bar simulation seam to the wide measurement wastage of each seam and recovery drilling fluid in experimentation.After experiment, stop valves all for tester can be opened, shutoff drill-in fluid is released and reclaims, injected clear water in fluid box, apply pressure and tester is cleaned.
Claims (9)
1. a shutoff drilling fluid test evaluation instrument, comprise results of fracture simulation body and fluid box (5), it is characterized in that: described results of fracture simulation body is combined primarily of many lock bolts (3) dense block, the world is to the upper plate (1) coordinated and lower plate (2) composition, described upper plate (1) and lower plate (2) adopt transparent material to make respectively, offer a drilling fluid flow channel (7) between the two and many simulations communicated with flow channel (7) are respectively stitched wide (8), the cross-sectional area of each bar simulation seam wide (8) is different, described flow channel (7) is provided with the channel interface (11) connecting fluid box (5).
2. shutoff drilling fluid test evaluation instrument according to claim 1, is characterized in that: described many simulations seam wide (8) are respectively perpendicular to flow channel (7).
3. shutoff drilling fluid test evaluation instrument according to claim 1 or 2, is characterized in that: the end of described flow channel (7) and simulation seam wide (8) is respectively equipped with stop valve (13).
4. shutoff drilling fluid test evaluation instrument according to claim 3, is characterized in that: described stop valve (13) is provided with drilling fluid reclamation pipe.
5. shutoff drilling fluid test evaluation instrument according to claim 1 or 2, is characterized in that: described flow channel (7) and simulation seam wide (8) beyond upper plate (1) and lower plate (2) between be provided with flexible seal ring.
6. shutoff drilling fluid test evaluation instrument according to claim 1, it is characterized in that: described lock bolt (3) is provided with metal splint (12) in the region that installs of upper plate (1) and lower plate (2), and described metal splint (12) splits on the surface of upper and lower plate.
7. shutoff drilling fluid test evaluation instrument according to claim 1, is characterized in that: described fluid box (5) is connected on the channel interface (11) of flow channel (7) by carrier pipe (10), and described carrier pipe (10) is provided with stop valve (6).
8. shutoff drilling fluid test evaluation instrument according to claim 1 or 7, is characterized in that: described fluid box (5) is connected with nitrogen cylinder (9) by pressurization interface (4).
9. shutoff drilling fluid test evaluation instrument according to claim 8, is characterized in that: described fluid box (5) is provided with pressure meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520757363.XU CN204960921U (en) | 2015-09-28 | 2015-09-28 | Shutoff drilling fluid test evaluation appearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520757363.XU CN204960921U (en) | 2015-09-28 | 2015-09-28 | Shutoff drilling fluid test evaluation appearance |
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| Publication Number | Publication Date |
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| CN204960921U true CN204960921U (en) | 2016-01-13 |
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| CN201520757363.XU Active CN204960921U (en) | 2015-09-28 | 2015-09-28 | Shutoff drilling fluid test evaluation appearance |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106526076A (en) * | 2016-11-02 | 2017-03-22 | 中国石油化工股份有限公司 | Leak stopping instrument capable of adjusting slit width |
| CN108505964A (en) * | 2018-06-12 | 2018-09-07 | 西南石油大学 | A kind of high pressure dynamic leak stopping evaluation experimental provision and method |
| CN109083630A (en) * | 2018-08-30 | 2018-12-25 | 陕西延长石油(集团)有限责任公司研究院 | A method of for appraisal drilling liquid sealing characteristics |
-
2015
- 2015-09-28 CN CN201520757363.XU patent/CN204960921U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106526076A (en) * | 2016-11-02 | 2017-03-22 | 中国石油化工股份有限公司 | Leak stopping instrument capable of adjusting slit width |
| CN106526076B (en) * | 2016-11-02 | 2019-02-19 | 中国石油化工股份有限公司 | A kind of adjustable slit width leak stopping instrument |
| CN108505964A (en) * | 2018-06-12 | 2018-09-07 | 西南石油大学 | A kind of high pressure dynamic leak stopping evaluation experimental provision and method |
| CN108505964B (en) * | 2018-06-12 | 2024-02-23 | 兰州城市学院 | High-pressure dynamic plugging evaluation experimental device and method |
| CN109083630A (en) * | 2018-08-30 | 2018-12-25 | 陕西延长石油(集团)有限责任公司研究院 | A method of for appraisal drilling liquid sealing characteristics |
| CN109083630B (en) * | 2018-08-30 | 2021-11-02 | 陕西延长石油(集团)有限责任公司研究院 | Method for evaluating plugging performance of drilling fluid |
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