CN109142151A - A kind of adhesive capacity method of evaluating performance of oil field fracturing diverting agent - Google Patents
A kind of adhesive capacity method of evaluating performance of oil field fracturing diverting agent Download PDFInfo
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- CN109142151A CN109142151A CN201811060987.0A CN201811060987A CN109142151A CN 109142151 A CN109142151 A CN 109142151A CN 201811060987 A CN201811060987 A CN 201811060987A CN 109142151 A CN109142151 A CN 109142151A
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- diverting agent
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- rock core
- adhesive capacity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- General Health & Medical Sciences (AREA)
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- Immunology (AREA)
- Pathology (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to technical field of oil production engineering, and in particular to a kind of adhesive capacity method of evaluating performance of oil field fracturing diverting agent.It mainly solves the problems, such as that existing method is unable to system, effective, quantization, accurately measures the adhesive capacity that oil field fracturing stitches interior diverting agent.Basic data of the present invention according to pressing crack construction simulates the adherency of diverting agent in fracturing fracture using microcomputer controlled electronic universal tester and pressing crack construction well reservoir core, gives the corresponding test parameter of adhesive capacity and evaluation method of diverting agent in stitching.The present invention has many advantages, such as being capable of accurate, objective, diverting agent in effectively evaluating oil field fracturing seam adhesive capacity.
Description
Technical field
The present invention relates to technical field of oil production engineering, are specifically related to a kind of adhesive capacity of oil field fracturing diverting agent
It can evaluation method.
Background technique
Oil field straight well, horizontal well temporarily block up turnaround fracture, branch stitches in fracturing process, need to realize temporary stall using diverting agent
To, branch's joint stabilizing process measure effect.But current conventional method is that the anamorphic stretching ability for testing diverting agent or easily-testing temporarily block up
The viscosity of agent does not consider the actual conditions that diverting agent is placed into practice of construction at the scene in artificial support crack, Wu Fazhun
Really, the adhesion strength caused by contacting, adhering between diverting agent and rock in pressing crack construction is effectively measured, needle is led to not
To the preferred diverting agent type of property.
Summary of the invention
The size that the object of the present invention is to provide a kind of by comparing diverting agent adhesion strength and itself tensile strength, to comment
Valence oil field fracturing stitches a kind of adhesive capacity method of evaluating performance of oil field fracturing diverting agent of interior diverting agent adhesive capacity.
The present invention reaches by following technical solution: a kind of adhesive capacity performance evaluation side of oil field fracturing diverting agent
Method, comprising the following steps:
Step 1: setting experiment parameter；It is specific as follows:
(1) predetermined experimental temperature: temperature value when using fractured well reservoir temperature as heating water bath；
(2) make a reservation for experiment confining pressure: using fractured well reservoir clossing pressure；
(3) diverting agent lays concentration: using concentration 0.1-0.4ml/cm2；
Step 2: Preparatory work of experiment；It is specific as follows:
(1) it selects the reservoir core of temporarily stifled fractured well block as experiment rock core, in the longitudinal direction cuts away half rock core；
(2) test temperature is arranged in water-bath, preheats in advance；It is to be measured temporarily that concentration calculation is laid according to man-made fracture area and diverting agent
Plug agent amount simultaneously measures spare, and diverting agent sample to be measured is put into the beaker for the deionized water for filling pH=7.5, beaker is put
10-60min is heated into water-bath, it is gradually swollen；The diverting agent being swollen uniformly is applied to rock core seam face, and by two
Half rock core combines to be twined with adhesive tape；
(3) rock core is put into and in the matched core holding unit of core specification, applies predetermined experiment confining pressure, taken after 10-60min
Out, and the adhesive tape on core is released；
(4) rock core of taking-up is placed on G font clamping device, rock core and clamping device is then mounted on microcomputer control together
On electronic universal tester；
Step 3: carrying out the test of diverting agent adhesive capacity using microcomputer controlled electronic universal tester；It is specific as follows:
(1) on electronic universal tester microcomputer, test macro is opened, material tensile tests at room module is selected, starts to test,
Pulling force and change in displacement of the diverting agent during by gradually tensile failure are tested, until diverting agent material is destroyed, test
It finishes；
(2) on electronic universal tester microcomputer, export pulling force and corresponding displacement experimental data, wherein diverting agent material damage it
Preceding maximum pull is adhesion values, and adhesion values and the quotient of man-made fracture area are adhesion strength σn, shutdown test system；
Step 4: analysis diverting agent adhesive capacity test result, evaluates diverting agent adhesion property；It is specific as follows:
Compare diverting agent adhesion strength σnWith diverting agent itself tensile strength sigmakParameter value, such as σn>σk, do not produce in test process
The phenomenon that raw diverting agent is along crack wall surface detachment fault illustrates that diverting agent can effectively be adhered to the prevention of crack wall surface and be drawn by external force
The diverting agent sliding risen；Such as σn<σk, the phenomenon that diverting agent is along crack wall surface detachment fault has occurred in test process, illustrates temporarily
Blocking agent cannot effectively be adhered to crack wall surface and the diverting agent as caused by external force is prevented to slide.
Compared with the prior art the present invention has the following beneficial effects:
The present invention can system, effectively, quantization, accurately measurement stitch in diverting agent material adhesion strength, to instruct diverting agent
It is preferred that, individual well optimization design and site operation.Controllability is strong, easy to operate simple, safe and effective.
Detailed description of the invention: Fig. 1 is ZDJ-1 type diverting agent pulling force and corresponding displacement experimental data figure in the embodiment of the present invention 1；
Fig. 2 is ZDJ-2 type diverting agent pulling force and corresponding displacement experimental data figure in the embodiment of the present invention 2.
Specific embodiment: the invention will be further described with reference to the accompanying drawings and embodiments:
Embodiment 1, the test of ZDJ-1 type diverting agent adhesive capacity:
Step 1: setting experiment parameter；It is specific as follows:
(1) predetermined experimental temperature: the reservoir temperature range that YP1-P4 well is determined according to YP1 block geothermal gradient is 78 DEG C -89 DEG C,
In view of diverting agent with fracturing fluid injects target zone together in pressing crack construction, due to the heat dissipation and and crack rock of fracturing fluid
Between the modes such as heat exchange, can all cause pit shaft and crack to generate cooling phenomenon, therefore preferably 60 °C as the pre- of heating water bath
Determine experimental temperature value；
(2) make a reservation for experiment confining pressure: due to diverting agent construct at the scene in be placed into man-made fracture, by external clossing pressure
Extruding, indoors experiment test in, should be taken into account influence of the clossing pressure to diverting agent, according to Daqing oil field site operation survey
Pressure testing cracking, which is released, determines that predetermined clossing pressure is 25.9MPa；
(3) diverting agent lays concentration: using concentration 0.16ml/cm2；
Step 2: Preparatory work of experiment；It is specific as follows:
(1) select the reservoir core of the wellblock YP1-P4 block as experiment rock core, 2.5 cm of rock core specification φ × 5.0cm, in longitudinal direction
On rock core is cut away half；
(2) test temperature is arranged in HH-2 type water-bath, preheats in advance；Concentration calculation is laid according to man-made fracture area and diverting agent
ZDJ-1 type diverting agent dosage is 2ml, and measurement is spare, and diverting agent sample to be measured is put into the burning for filling the deionized water of pH=7.5
In cup, beaker is put into water-bath and heats 30min, it is gradually swollen；The diverting agent being swollen uniformly is applied to rock core
Seam face, and two halves rock core is combined and is twined with adhesive tape；
(3) rock core is put into TY-2C type core holding unit, applies the ring pressure of 25.9MPa, is taken out after 60min, and release core
On adhesive tape；
(4) rock core of taking-up is placed on G font clamping device, rock core and clamping device is then mounted on CMT6104 together
On type microcomputer controlled electronic universal tester；
Step 3: carrying out the test of diverting agent adhesive capacity using CMT6104 type microcomputer controlled electronic universal tester；Specifically such as
Under:
(1) on electronic universal tester microcomputer, test macro is opened, material tensile tests at room module is selected, starts to test,
Pulling force and change in displacement of the diverting agent during by gradually tensile failure are tested, until diverting agent material is destroyed, test
It finishes；
(2) on electronic universal tester microcomputer, export pulling force and corresponding displacement experimental data, wherein diverting agent material damage it
Preceding maximum pull is adhesion values, and value 165.42N, adhesion values and the quotient of man-made fracture area are adhesion strength
σn, value 0.13MPa, shutdown test system；
Step 4: analysis diverting agent adhesive capacity test result, evaluates diverting agent adhesion property；
ZDJ-1 type diverting agent adhesion strength σnFor 0.13MPa, itself tensile strength sigmakFor 0.11MPa, test result shows σn>
σk, the phenomenon that diverting agent is along crack wall surface detachment fault is not generated in test process, illustrates that diverting agent can be effectively adhered to
Crack wall surface prevents the diverting agent as caused by external force from sliding.
Embodiment 2, the test of ZDJ-2 type diverting agent adhesive capacity:
Step 1: setting experiment parameter；It is specific as follows:
(1) predetermined experimental temperature: the reservoir temperature range that YP1-P4 well is determined according to YP1 block geothermal gradient is 78 DEG C -89 DEG C,
In view of diverting agent with fracturing fluid injects target zone together in pressing crack construction, due to the heat dissipation and and crack rock of fracturing fluid
Between the modes such as heat exchange, can all cause pit shaft and crack to generate cooling phenomenon, therefore preferably 60 °C as the pre- of heating water bath
Determine experimental temperature value；
(2) make a reservation for experiment confining pressure: due to diverting agent construct at the scene in be placed into man-made fracture, by external clossing pressure
Extruding, indoors experiment test in, should be taken into account influence of the clossing pressure to diverting agent, according to Daqing oil field site operation survey
Pressure testing cracking, which is released, determines that predetermined clossing pressure is 25.9MPa；
(3) diverting agent lays concentration: using concentration 0.16ml/cm2；
Step 2: Preparatory work of experiment；It is specific as follows:
(1) select the reservoir core of the wellblock YP1-P4 block as experiment rock core, 2.5 cm of rock core specification φ × 5.0cm, in longitudinal direction
On rock core is cut away half；
(2) test temperature is arranged in HH-2 type water-bath, preheats in advance；Concentration calculation is laid according to man-made fracture area and diverting agent
ZDJ-2 type diverting agent dosage is 2ml, and measurement is spare, and diverting agent sample to be measured is put into the burning for filling the deionized water of pH=7.5
In cup, beaker is put into water-bath and heats 30min, it is gradually swollen；The diverting agent being swollen uniformly is applied to rock core
Seam face, and two halves rock core is combined and is twined with adhesive tape；
(3) rock core is put into TY-2C type core holding unit, applies the ring pressure of 25.9MPa, is taken out after 60min, and release core
On adhesive tape；
(4) rock core of taking-up is placed on G font clamping device, rock core and clamping device is then mounted on CMT6104 together
On type microcomputer controlled electronic universal tester；
Step 3: carrying out the test of diverting agent adhesive capacity using CMT6104 type microcomputer controlled electronic universal tester；Specifically such as
Under:
(1) on electronic universal tester microcomputer, test macro is opened, material tensile tests at room module is selected, starts to test,
Pulling force and change in displacement of the diverting agent during by gradually tensile failure are tested, until diverting agent material is destroyed, test
It finishes；
(2) on electronic universal tester microcomputer, export pulling force and corresponding displacement experimental data,
Wherein the maximum pull before diverting agent material damage be adhesion values, value 41.43N, adhesion values with manually split
The quotient for stitching area is adhesion strength σn, value 0.03MPa, shutdown test system；
Step 4: analysis diverting agent adhesive capacity test result, evaluates diverting agent adhesion property；
ZDJ-2 type diverting agent adhesion strength σnFor 0.03MPa, itself tensile strength sigmaKFor 0.14MPa, test result shows σn<
σk, the phenomenon that diverting agent is along crack wall surface detachment fault has occurred in test process, illustrates that diverting agent cannot be effectively adhered to
Crack wall surface prevents the diverting agent as caused by external force from sliding.
Claims (1)
1. a kind of adhesive capacity method of evaluating performance of oil field fracturing diverting agent, it is characterised in that: the following steps are included:
Step 1: setting experiment parameter；It is specific as follows:
(1) predetermined experimental temperature: temperature value when using fractured well reservoir temperature as heating water bath；
(2) make a reservation for experiment confining pressure: using fractured well reservoir clossing pressure；
(3) diverting agent lays concentration: using concentration 0.1-0.4ml/cm2；
Step 2: Preparatory work of experiment；It is specific as follows:
(1) it selects the reservoir core of temporarily stifled fractured well block as experiment rock core, in the longitudinal direction cuts away half rock core；
(2) test temperature is arranged in water-bath, preheats in advance；It is to be measured temporarily that concentration calculation is laid according to man-made fracture area and diverting agent
Plug agent amount simultaneously measures spare, and diverting agent sample to be measured is put into the beaker for the deionized water for filling pH=7.5, beaker is put
10-60min is heated into water-bath, it is gradually swollen；The diverting agent being swollen uniformly is applied to rock core seam face, and by two
Half rock core combines to be twined with adhesive tape；
(3) rock core is put into and in the matched core holding unit of core specification, applies predetermined experiment confining pressure, taken after 10-60min
Out, and the adhesive tape on core is released；
(4) rock core of taking-up is placed on G font clamping device, rock core and clamping device is then mounted on microcomputer control together
On electronic universal tester；
Step 3: carrying out the test of diverting agent adhesive capacity using microcomputer controlled electronic universal tester；It is specific as follows:
(1) on electronic universal tester microcomputer, test macro is opened, material tensile tests at room module is selected, starts to test,
Pulling force and change in displacement of the diverting agent during by gradually tensile failure are tested, until diverting agent material is destroyed, test
It finishes；
(2) on electronic universal tester microcomputer, export pulling force and corresponding displacement experimental data, wherein diverting agent material damage it
Preceding maximum pull is adhesion values, and adhesion values and the quotient of man-made fracture area are adhesion strength σn, shutdown test system；
Step 4: analysis diverting agent adhesive capacity test result, evaluates diverting agent adhesion property；It is specific as follows:
Compare diverting agent adhesion strength σnWith diverting agent itself tensile strength sigmakParameter value, such as σn>σk, do not generate in test process
The phenomenon that diverting agent is along crack wall surface detachment fault illustrates that diverting agent can effectively be adhered to the prevention of crack wall surface and be caused by external force
Diverting agent sliding；Such as σn<σk, the phenomenon that diverting agent is along crack wall surface detachment fault has occurred in test process, illustrates temporarily stifled
Agent cannot effectively be adhered to crack wall surface and the diverting agent as caused by external force is prevented to slide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811060987.0A CN109142151A (en) | 2018-09-12 | 2018-09-12 | A kind of adhesive capacity method of evaluating performance of oil field fracturing diverting agent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811060987.0A CN109142151A (en) | 2018-09-12 | 2018-09-12 | A kind of adhesive capacity method of evaluating performance of oil field fracturing diverting agent |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110283578A (en) * | 2019-07-18 | 2019-09-27 | 西南石油大学 | A kind of water-soluble diverting agent and preparation method thereof suitable for secondary fracturing |
| CN111680457A (en) * | 2020-05-27 | 2020-09-18 | 大庆油田有限责任公司 | Numerical simulation method for evaluating plugging effect of plugging agent in fracturing process |
| CN112858578A (en) * | 2020-07-09 | 2021-05-28 | 中国海洋石油集团有限公司 | Plugging performance evaluation method of in-seam temporary plugging agent for tight gas reservoir hydraulic fracturing |
| CN113236240A (en) * | 2021-05-27 | 2021-08-10 | 新疆正通石油天然气股份有限公司 | High-temperature temporary blocking steering indoor true triaxial physical model experiment equipment and method |
| CN114441321A (en) * | 2020-11-05 | 2022-05-06 | 中国石油化工股份有限公司 | Evaluation device and evaluation method for residual strength of solid temporary plugging agent |
| CN114459973A (en) * | 2020-10-21 | 2022-05-10 | 中国石油化工股份有限公司 | Evaluation device and evaluation method for temporary plugging strength of temporary plugging agent |
| CN115680620A (en) * | 2022-09-08 | 2023-02-03 | 中国石油大学(华东) | Device for testing plugging capability of jelly plugging agent and method for evaluating plugging capability |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110283578A (en) * | 2019-07-18 | 2019-09-27 | 西南石油大学 | A kind of water-soluble diverting agent and preparation method thereof suitable for secondary fracturing |
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| CN111680457B (en) * | 2020-05-27 | 2022-11-04 | 大庆油田有限责任公司 | Numerical simulation method for evaluating plugging effect of plugging agent in fracturing process |
| CN112858578A (en) * | 2020-07-09 | 2021-05-28 | 中国海洋石油集团有限公司 | Plugging performance evaluation method of in-seam temporary plugging agent for tight gas reservoir hydraulic fracturing |
| CN112858578B (en) * | 2020-07-09 | 2022-12-30 | 中国海洋石油集团有限公司 | Plugging performance evaluation method of in-seam temporary plugging agent for tight gas reservoir hydraulic fracturing |
| CN114459973A (en) * | 2020-10-21 | 2022-05-10 | 中国石油化工股份有限公司 | Evaluation device and evaluation method for temporary plugging strength of temporary plugging agent |
| CN114441321A (en) * | 2020-11-05 | 2022-05-06 | 中国石油化工股份有限公司 | Evaluation device and evaluation method for residual strength of solid temporary plugging agent |
| CN114441321B (en) * | 2020-11-05 | 2023-09-15 | 中国石油化工股份有限公司 | Device and method for evaluating residual strength of solid temporary plugging agent |
| CN113236240A (en) * | 2021-05-27 | 2021-08-10 | 新疆正通石油天然气股份有限公司 | High-temperature temporary blocking steering indoor true triaxial physical model experiment equipment and method |
| CN115680620A (en) * | 2022-09-08 | 2023-02-03 | 中国石油大学(华东) | Device for testing plugging capability of jelly plugging agent and method for evaluating plugging capability |
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