CN202975005U - Rock core holder - Google Patents
Rock core holder Download PDFInfo
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- CN202975005U CN202975005U CN 201220610926 CN201220610926U CN202975005U CN 202975005 U CN202975005 U CN 202975005U CN 201220610926 CN201220610926 CN 201220610926 CN 201220610926 U CN201220610926 U CN 201220610926U CN 202975005 U CN202975005 U CN 202975005U
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- Prior art keywords
- pressure
- holding unit
- core holding
- clamper
- gum cover
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- Expired - Lifetime
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Abstract
The utility model discloses a rock core holder. The rock core holder comprises a hollow holder outer barrel, a rubber sleeve, a T-joint plunger and a pressure detecting device, wherein the rubber sleeve is arranged inside the holder outer barrel and a bi-directional module is placed in the rubber sleeve; a first end of the T-joint plunger is arranged inside and communicated with the rubber sleeve and a second end of the T-joint plunger is connected with the holder outer barrel; and the bi-directional module comprises a straight gap and a wedged gap. According to the rock core holder, the forward and backward pressure-bearing capability of leakage plugging slurry can be evaluated, the gradient changing condition of pressure along with time and invasion depth after the leakage plugging slurry filtrate invades pores or cracks in leakage formation at high temperature and high pressure can be imitated, the compatibility of a leakage plugging material to the leakage formation can be evaluated scientifically and the further development of a leakage preventing technology is promoted.
Description
Technical field
The utility model belongs to the Process of Oil Well Drilling simulation field, is specifically related to a kind of core holding unit.
Background technology
Core holding unit is as a kind of clamping and seal rock core, complete rock permeability, factor of porosity is tested or the special arrangement of various rock core displacement tests, its major function is that rock sample to be measured or to be tested is put into wherein, and when guaranteeing test fluid flow by the core sample rear and front end, the side surface of rock sample can be sealed up fully.Its function ratio is more single, mainly concentrates on the core test purposes.
CN 201120231959.8 discloses a kind of core holding unit, and impact on the nmr probe line improves and revises on the temperature variation of core holding unit under high pressure conditions for it; The disclosed Multifunctional core clamp holder of CN201120119207.2 is mainly used in testing rock core sample permeability, can test the rock core electrical parameter of different water cut under different experimental conditions simultaneously; CN 200810243771.8 discloses a kind of triaxial core holder, and it can better the three-dimensional stressing conditions of simulation core in the stratum, and than before two axial core holding units have had larger improvement and perfection mutually; CN200920252535.2 discloses a kind of chuck core holder, it mainly is to install on each claw of three-jaw or four paws self-centering chuck the arc briquetting, several arc briquettings spatially form cylindrical shape, the middle packing element of placing, when using handle to screw chuck, the arc briquetting is from drawing close to the center on every side, thereby makes gum cover hug rock core and plug.This clamper adopts the method for machinery pressurization to substitute hydraulic pressure or air pressure, and is simple in structure, cost is lower; The visual clamper in the disclosed rock core of CN201120201952.1 crack, installed visual window additional on clamper, and be provided with the cylindrical shooting headstock and camera on visual window, can see by camera the metamorphosis in rock core crack, but it only can under the ground environment of specific simulation, observe the folding condition in crack; CN03267079.6 discloses a kind of heterogeneous multi-layer core holding unit for CT scan, this clamper can be realized distributing along journey of interior each interval fluid saturation of real time on-line monitoring heterosphere, also can be observed the layer cross flow phenomenon that causes due to Action of Gravity Field.
Above-mentioned core holding unit is by realizing the related experiment for core sample, simulate, be familiar with the primal environment on stratum, the petroleum drilling completion had larger directive significance, but the complicated variety due to the stratum, impel the new function of further exploitation core holding unit, the Simulation of Complex stratum characteristic, improve the accuracy that instructs the petroleum drilling well completion work more effectively.
The utility model content
For deficiency of the prior art, the utility model provides a kind of core holding unit, it can tell with anti-returning in the simulation fracture shutoff, realized leak stopping slurry filtrate under the evaluation, simulation high-temperature and high-pressure conditions to the forward and reverse bearing capacity of leak stopping slurry invade pressure behind the hole on leakage stratum or crack in time with the graded situation of invasion depth, can make to lost circulation material and the compatibility on leakage stratum the evaluation of science.
According to the utility model, a kind of core holding unit is provided, comprising: the clamper urceolus of hollow; Be placed in the gum cover in the clamper urceolus; Be arranged on the two-way modules in the built-in gap in described gum cover; Threeway plunger, its first end be placed in gum cover and communicate with the gap of two-way modules, the second end is connected with the clamper urceolus; And apparatus for detecting pressure.
In above-mentioned core holding unit, described gap comprises vertical masonry joint or key joint.Described vertical masonry joint or key joint can be used for simulating different fracture morphologys; The borehole wall as near in the vertical masonry joint simulation fracture is opened section, the close segments of key joint simulation fracture end.
In above-mentioned core holding unit, described apparatus for detecting pressure comprises confined pressure joint and the sensor connector on the clamper urceolus.In a specific embodiment, except being fixed with a confined pressure joint, also can connect (pressure) sensor connector of seven precisions on the shell of described clamper urceolus, described sensor connector evenly distributes on cylinder shell.
In above-mentioned core holding unit, be provided with the sensor access port that is communicated with sensor connector on gum cover.The number of the sensor access port on described gum cover and clamper urceolus upper sensor joint is suitable.
In above-mentioned core holding unit, described two-way modules is provided with the mechanism supporting with described sensor access port.In a specific embodiment, has the circular open that holds sensor connector on described two-way modules, sensor connector has been passed gum cover, during test, gum cover is held the sensor connector outer wall tightly under the effect of confined pressure, guarantee that sensor can the described module of Measurement accuracy when the gap internal pressure, stop leakage-stop liquid to go out outside gum cover the displacement pressure effect is dirty.
In a specific embodiment of above-mentioned core holding unit, by the confined pressure in confined pressure joint measurement clamper, by the pressure of a plurality of spot pressures in crack on pressure transducer joint measurement stainless steel module; Described pressure transducer can be converted to electric signal with each point pressure, inputs to computing machine by the circuit collection plate, completes collection and processing to force value by computing machine; The pressure that described confined pressure joint is measured, is kept higher than displacement pressure from motion tracking by computing machine.
In above-mentioned core holding unit, described gum cover is the fluororubber gum cover, can heatproof, withstand voltage.
In a specific embodiment of above-mentioned core holding unit, the second end of described plunger is connected with the clamper urceolus by screw thread.Described plunger can be made by stainless steel etc.
In above-mentioned core holding unit, described two-way modules is two-way stainless steel module.
The utility model is used for the simulation fracture shutoff and prevents returning the process of telling as follows: when leak stopping is starched under the forward displacement pressure, go deep in continuous crack (as vertical masonry joint or key joint) in two-way modules, can produce the pressure transmission on the passage that the leak stopping slurry is flowed through, force value enters penetration of fracture appearance Pressure Drop in various degree with fluid, survey the force value that to collect variant point with device by the pressure on core holding unit, be used for plugging effect and shutoff mechanism that microcomputer modelling is analyzed the leak stopping slurry; When return discharge opeing under reverse displacement pressure by oppositely entering the crack, plugging material particle in the crack is extruded the crack, this process can produce the pressure transmission equally on the passage that its leak stopping slurry is flowed through, be distributed in the passage upward pressure of flowing through and survey the force value that will record each point with device, after being used for microcomputer modelling analysis crack shutoff, the anti-row of the returning ability of plugged zone.
According to the core holding unit that the utility model provides, starch the process that enters the crack different depth by simulated leaking stoppage, analyze plugging effect and the shutoff mechanism of leak stopping slurry; Can simulate simultaneously and return discharge opeing and the plugging material particle in the crack is extruded the process in crack, after analyzing the crack shutoff, the anti-row of the returning ability of plugged zone.
The core holding unit that provides according to the utility model, can realize leak stopping slurry filtrate under the evaluation, simulation high-temperature and high-pressure conditions to the forward and reverse bearing capacity of leak stopping slurry invade pressure behind the hole on leakage stratum or crack in time with the graded situation of invasion depth, can make to lost circulation material and the compatibility of missing the stratum evaluation of science, be used for instructing the fissured formation shutoff operation of Process of Oil Well Drilling, promote further developing of leak-proof leak-stopping technology.According to the core holding unit that the utility model provides, can simulate 150 ℃, the ground environment of 60MPa, in experimentation, simple to operate, safety has wide market outlook.
Description of drawings
Fig. 1 has shown the connection diagram according to the core holding unit of an embodiment of the utility model;
Fig. 2 has shown the two-way modules schematic diagram according to an embodiment of the utility model;
Fig. 3 has shown the two-way modules schematic diagram according to another embodiment of the present utility model;
Fig. 4 has shown the structural representation according to the gum cover of an embodiment of the utility model;
Fig. 5 has shown the structural representation according to the plunger of an embodiment of the utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further explained and illustrates, but do not consist of any restriction of the present utility model.
Fig. 1 has shown the connection diagram according to the core holding unit of an embodiment of the utility model.In the drawings, described clamper comprises the clamper urceolus 6 of hollow; Be placed in the gum cover 8 in the clamper urceolus; Be arranged on the two-way modules 13 in the built-in gap in described gum cover 8; Threeway plunger 3 and 12, its first end are placed in gum cover 8 and communicate with the gap of described two-way modules 13, the second end is connected with clamper urceolus 6; With 12 and apparatus for detecting pressure.Described apparatus for detecting pressure comprises confined pressure joint 5 and the pressure transducer joint 7 that is arranged on clamper urceolus 6.In a specific embodiment, described plunger 3 is connected by screw thread 9 with clamper urceolus 6 with being connected.Plunger 3 also leads to forward displacement pressure entrance 1 and returns escape hole 4 except with gap in described module 13 communicates.In a specific embodiment, lead to forward displacement pressure entrance 1 and be provided with stop valve 2 and 21 with the path that returns escape hole 4.The gap of plunger 12 within leading to described module 13, also lead to the outlet 10 of forward displacement pressure and reverse displacement pressure entrance 11.In a specific embodiment, be provided with stop valve 19 and 20 on the path that leads to the outlet 10 of forward displacement pressure and reverse displacement pressure entrance 11.
Fig. 2 has shown the two-way modules schematic diagram according to an embodiment of the utility model.In figure, described two-way modules 13 is interior apertured right cylinder, and described gap is vertical masonry joint 14.
Fig. 3 has shown the two-way modules schematic diagram according to another embodiment of the utility model.In figure, described two-way modules 13 is interior apertured right cylinder, and described gap is key joint 15.
Also have the mechanism (not shown) supporting with described sensor connector on the wall of the two-way modules in Fig. 2 and Fig. 3, make described sensor connector can measure pressure in described gap.
Fig. 4 has shown the structural representation according to the gum cover of an embodiment of the utility model.Be provided with the sensor access port 16 that is communicated with sensor connector 7 on gum cover 8.The number of pressure transducer access port 16 is corresponding with the pressure transducer joint 7 on clamper urceolus 6.
Fig. 5 has shown the structural representation according to the plunger of an embodiment of the utility model.In figure, an end 17 of plunger is placed in gum cover, and communicates with gap in described two-way modules.The screw thread 9 of the second end is used for plunger is connected with the clamper urceolus.Another two ports of plunger are 18 and 22.
In a specific embodiment, the concrete steps with the simulation fracture shutoff when carrying out leaking stoppage experiment are as follows:
1) open stop valve 2,20, close stop valve 19,21;
2) under the effect of forward displacement pressure, the leakage-stop liquid for preparing is clamp-oned by forward displacement pressure entrance 1, through the crack (as vertical masonry joint 14 or key joint 15) in plunger 3 inflow two-way modules, this moment by pressure with sniffer from the motion tracking confined pressure, the confined pressure value changes with displacement pressure, keeps to Duo than the forward displacement pressure and is advisable as 2MPa.
3) in the flow process of leakage-stop liquid in the crack, will produce Pressure Drop on it flows through passage, pressure will record the variation of force value with sniffer;
4) if shutoff crack success or leak stopping slurry are flowed out by positive pressure outlet 10 entirely, experiment all comes to an end.
In another specific embodiment, instead drive experiment (driving as example so that clear water is counter) to return the concrete steps of telling with simulation as follows:
1) open stop valve 19,21, close stop valve 2,20;
2) under reverse displacement pressure, be squeezed into clear water in the crack (as vertical masonry joint 14 or key joint 15) of two-way modules by reverse displacement pressure entrance 11;
3) in the flow process of clear water in the crack, will produce Pressure Drop on it flows through passage, pressure will record the variation of force value with sniffer;
4) if clear water is flowed out by buffer brake outlet 21 entirely, perhaps return the desired value that row pressure power reaches the experimenter, experiment all comes to an end.
Should be noted in the discussion above that above-described embodiment only is used for explaining the utility model, do not consist of any restriction of the present utility model.By the reference exemplary embodiments, the utility model being described, is descriptive and explanatory vocabulary but should be understood to word wherein used, rather than limited vocabulary.Can modify the utility model in the scope of the utility model claim in accordance with regulations, and within not deviating from scope and spirit of the present utility model, the utility model be revised.Although the utility model of wherein describing relates to specific shape, structure and embodiment, and does not mean that the utility model is limited to wherein disclosed particular case, on the contrary, the utility model can extend to other, and all have shape and the structure of identical function.
Claims (8)
1. a core holding unit, comprising: the clamper urceolus of hollow; Be placed in the gum cover in the clamper urceolus; Be arranged on the two-way modules in the built-in gap in described gum cover; Threeway plunger, its first end are placed in gum cover and communicate with the gap of two-way modules, and the second end is connected with the clamper urceolus; And apparatus for detecting pressure.
2. core holding unit according to claim 1, is characterized in that, described gap comprises vertical masonry joint or key joint.
3. core holding unit according to claim 1 and 2, is characterized in that, described apparatus for detecting pressure comprises confined pressure joint and the sensor connector that is arranged on the clamper urceolus.
4. core holding unit according to claim 1 and 2, is characterized in that, is provided with the sensor access port that is communicated with sensor connector on gum cover.
5. core holding unit according to claim 4, is characterized in that, described two-way modules is provided with the mechanism supporting with described sensor access port.
6. core holding unit according to claim 1 and 2, is characterized in that, described gum cover is the fluororubber gum cover.
7. core holding unit according to claim 1 and 2, is characterized in that, the second end of described threeway plunger is connected with the clamper urceolus by screw thread.
8. core holding unit according to claim 1 and 2, is characterized in that, described two-way modules is two-way stainless steel module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220610926 CN202975005U (en) | 2012-11-16 | 2012-11-16 | Rock core holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220610926 CN202975005U (en) | 2012-11-16 | 2012-11-16 | Rock core holder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202975005U true CN202975005U (en) | 2013-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220610926 Expired - Lifetime CN202975005U (en) | 2012-11-16 | 2012-11-16 | Rock core holder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202975005U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974096A (en) * | 2016-07-27 | 2016-09-28 | 北京瑞莱博石油技术有限公司 | Core fluid saturation pressure withstanding measuring device |
| CN107238691A (en) * | 2016-03-29 | 2017-10-10 | 中国石油化工股份有限公司 | Rock core fastener |
| 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 |
| CN108663498A (en) * | 2017-03-27 | 2018-10-16 | 中国石油化工股份有限公司 | The shale gas site desorption experimental provision and method of high temperature decompression and pressure break |
| CN109900618A (en) * | 2019-04-10 | 2019-06-18 | 中国海洋石油集团有限公司 | A kind of leak stopping instrument for simulating drop ply warm-pressing system |
| CN110631897A (en) * | 2019-09-24 | 2019-12-31 | 成都理工大学 | Multifunctional rock core holder |
| CN111239021A (en) * | 2020-02-26 | 2020-06-05 | 西南石油大学 | Flat plate holder for simulating multiphase fluid flowing in cracks and use method thereof |
| CN111734344A (en) * | 2020-06-29 | 2020-10-02 | 中国石油天然气股份有限公司 | Experimental device and method for evaluating performance of plugging agent for plugging oil layer |
| FR3122732A1 (en) * | 2021-05-05 | 2022-11-11 | IFP Energies Nouvelles | Membrane for inserting porous material |
| CN115929287A (en) * | 2022-10-13 | 2023-04-07 | 西南石油大学 | Crack plugging layer pressure-bearing dispersing capacity measuring device |
| CN116297098A (en) * | 2023-03-17 | 2023-06-23 | 西南石油大学 | Optimization method for deep fractured hydrocarbon reservoir pre-propped fracture temporary plugging reservoir protection formula |
-
2012
- 2012-11-16 CN CN 201220610926 patent/CN202975005U/en not_active Expired - Lifetime
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107238691A (en) * | 2016-03-29 | 2017-10-10 | 中国石油化工股份有限公司 | Rock core fastener |
| CN107238691B (en) * | 2016-03-29 | 2019-07-05 | 中国石油化工股份有限公司 | Rock core fastener |
| CN105974096B (en) * | 2016-07-27 | 2018-07-20 | 北京瑞莱博石油技术有限公司 | The resistance to pressure measuring device of core fluids saturation degree |
| CN105974096A (en) * | 2016-07-27 | 2016-09-28 | 北京瑞莱博石油技术有限公司 | Core fluid saturation pressure withstanding measuring device |
| CN108663498A (en) * | 2017-03-27 | 2018-10-16 | 中国石油化工股份有限公司 | The shale gas site desorption experimental provision and method of high temperature decompression and pressure break |
| CN108505964B (en) * | 2018-06-12 | 2024-02-23 | 兰州城市学院 | High-pressure dynamic plugging evaluation experimental device and method |
| 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 |
| CN109900618A (en) * | 2019-04-10 | 2019-06-18 | 中国海洋石油集团有限公司 | A kind of leak stopping instrument for simulating drop ply warm-pressing system |
| CN110631897A (en) * | 2019-09-24 | 2019-12-31 | 成都理工大学 | Multifunctional rock core holder |
| CN111239021A (en) * | 2020-02-26 | 2020-06-05 | 西南石油大学 | Flat plate holder for simulating multiphase fluid flowing in cracks and use method thereof |
| CN111239021B (en) * | 2020-02-26 | 2020-12-08 | 西南石油大学 | Flat plate holder for simulating multiphase fluid flowing in cracks and use method thereof |
| CN111734344A (en) * | 2020-06-29 | 2020-10-02 | 中国石油天然气股份有限公司 | Experimental device and method for evaluating performance of plugging agent for plugging oil layer |
| FR3122732A1 (en) * | 2021-05-05 | 2022-11-11 | IFP Energies Nouvelles | Membrane for inserting porous material |
| CN115929287A (en) * | 2022-10-13 | 2023-04-07 | 西南石油大学 | Crack plugging layer pressure-bearing dispersing capacity measuring device |
| CN115929287B (en) * | 2022-10-13 | 2023-10-24 | 西南石油大学 | Crack plugging layer pressure-bearing dispersion capability measuring device |
| CN116297098A (en) * | 2023-03-17 | 2023-06-23 | 西南石油大学 | Optimization method for deep fractured hydrocarbon reservoir pre-propped fracture temporary plugging reservoir protection formula |
| CN116297098B (en) * | 2023-03-17 | 2023-12-01 | 西南石油大学 | Optimization method for deep fractured hydrocarbon reservoir pre-propped fracture temporary plugging reservoir protection formula |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |