CN110617054B - Oil field horizontal well sectional testing pipe column and method - Google Patents
Oil field horizontal well sectional testing pipe column and method Download PDFInfo
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- CN110617054B CN110617054B CN201910874814.0A CN201910874814A CN110617054B CN 110617054 B CN110617054 B CN 110617054B CN 201910874814 A CN201910874814 A CN 201910874814A CN 110617054 B CN110617054 B CN 110617054B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
Abstract
The invention belongs to the technical field of testing of liquid absorption capacity of each section of an oil field horizontal well, and particularly relates to a sectional testing tubular column and a sectional testing method for the oil field horizontal well. The invention realizes the purpose of testing the liquid absorption capacity of each section by the section-by-section throwing and pumping through the oil pipe, the front-end sliding sleeve seat, the multi-stage packer sliding sleeve group, the tail-end sliding sleeve and the tail-end packer which are sequentially connected from the front end to the tail end of the oil pipe. The method is used for setting all packers by one-time pressing, so that each section is divided, and the interference between sections in the test process is eliminated; the method does not need to move a pipe column and a well head in the testing process, and has high testing efficiency; the method is low in cost and reliable in result, and a new method is provided for the horizontal well sectional test.
Description
Technical Field
The invention belongs to the technical field of testing of liquid absorption capacity of each section of an oil field horizontal well, and particularly relates to a sectional testing tubular column and a sectional testing method for the oil field horizontal well.
Background
For some horizontal well development blocks with long mining life, after initial high yield, the production is gradually decreased, and a large number of horizontal wells need to be subjected to repeated fracturing modification to recover the productivity. The previous imbibition profile test data show that the difference of liquid production contributions of different modified intervals of the horizontal well is large, and the conditions of uneven liquid production contributions among the intervals and large difference of the extraction degree of the horizontal segment exist. By testing the segmental imbibition capacity of the horizontal well, the potential of the reservoir can be fully exerted only by implementing key transformation on the interval with small liquid production contribution and enriched residual oil, and the ultimate recovery ratio of the oil reservoir is improved. Therefore, the horizontal well subsection test is of great importance for repeated fracturing layer selection and fracturing parameter optimization design.
The current common horizontal well sectional test methods include a logging method and a double-sealing single-clamping pipe column sectional dragging test method. For the first method, due to scaling, corrosion, sand jetting and the like of the horizontal well, the condition of the shaft is complex, the condition that the well entering instrument is blocked in the horizontal section often occurs, and the cost is high; for the second method, in the section-by-section dragging process, the horizontal section is restored to a pressure system, relatively serious intersegmental interference exists, the test result is inaccurate, and the dragging pipe column packer is easy to fail, the number of pipe columns is large, and the efficiency is low.
Therefore, a segmental test method for the horizontal well of the oil field is urgently needed to be found, the liquid absorption capacity of each segment is accurately obtained, a basis is provided for stratum selection and parameter optimization of repeated fracturing modification of the horizontal well, residual oil is fully utilized, and a good oil increasing effect is obtained.
Disclosure of Invention
The invention provides a sectional testing tubular column and a sectional testing method for an oil field horizontal well, and aims to provide the sectional testing tubular column and the sectional testing method for the oil field horizontal well, which can accurately and efficiently measure the liquid absorption capacity of different intervals and are low in testing cost.
In order to realize the purpose, the invention adopts the technical scheme that:
the sectional test method for the horizontal well of the oil field comprises the following steps
The method comprises the following steps: processing a well to be logged
Selecting a well to be tested, pulling out a production pipe column of an original well, and finishing a shaft treatment process;
step two: perforating the well cementation casing;
step three: setting a well cementation casing into a reservoir;
step four: sectional testing pipe column for connecting horizontal well
After the horizontal well sectional testing pipe columns are connected, the well to be tested which is processed in the first step is put into the horizontal well at one time, and a pump truck is connected to the fractured well mouth in a bypass mode;
step five: sequentially testing the liquid absorbing capacity of the first section to the nth section
After the fourth step is finished, a first-stage ball is thrown from an injection port on the fracturing well head, the fracturing well head is pressurized and pumped, when the first-stage ball reaches a first-stage sliding sleeve, the pressure of the well head rises, all packers are set when the fracturing pressure reaches a set pressure value, after the fracturing pressure is suppressed, a shear pin is cut off, a sliding sleeve core is beaten and falls onto a front-end sliding sleeve seat, the first-stage sliding sleeve is opened, pumping is implemented, the pressure value is recorded, and a first-stage liquid absorption capacity test is finished; then a second-stage ball is thrown, the second-stage ball is located on a second-stage sliding sleeve to boost pressure, after the pressure is suppressed, a shear pin is cut off, a sliding sleeve core is located on a sliding sleeve seat, pumping is carried out, pressure values are recorded, and a second-stage liquid suction capacity test is completed; finally, repeating the steps until the imbibition capability test of all the intervals is completed;
step six: imbibition capacity sequencing of individual intervals
According to the result of the test in the fifth step, obtaining the liquid absorption capacity sequencing of each layer section according to the liquid absorption capacity of each layer section;
step seven: application of test results
And applying the liquid absorption capacity of each layer section obtained in the step six to repeated fracturing well selection and parameter optimization.
And D, setting the pressure build-up value in the fifth step to be 13-17MPa, and when the pressure build-up value is 20-25MPa, shearing the shear pin and beating the sliding sleeve core to fall onto the front end sliding sleeve seat.
The set pressure value of the pressure building is 15 MPa.
In the sixth step, the liquid absorption capacity of each interval is obtained by comparing the pressure at the same pump injection amount.
The judgment method for obtaining the imbibition capacity of each layer section in the sixth step is that the smaller the pressure value of the pump truck is, the stronger the imbibition capacity is under the same injection displacement.
A sectional testing pipe column for an oil field horizontal well at least comprises an oil pipe, a front end sliding sleeve seat, a multi-stage packer sliding sleeve group, a tail end sliding sleeve and a tail end packer; the front end sliding sleeve seat, the multi-stage packer sliding sleeve set, the tail end sliding sleeve and the tail end packer are sequentially connected from the foremost end to the tail end of the oil pipe.
The packer sliding sleeve set comprises a sliding sleeve, a sliding sleeve seat and a packer; the sliding sleeve, the sliding sleeve seat and the packer are sequentially connected from the front end to the tail end of the oil pipe.
Each stage of packer sliding sleeve group in the multi-stage packer sliding sleeve group has the same structure, and the multi-stage packer sliding sleeve group comprises a first-stage packer sliding sleeve group, a second-stage packer sliding sleeve group and an n-stage packer sliding sleeve group from the front end to the rear end of an oil pipe; the primary packer sliding sleeve set consists of a primary sliding sleeve, a primary sliding sleeve seat and a primary packer; the secondary packer sliding sleeve set consists of a secondary sliding sleeve, a secondary sliding sleeve seat and a secondary packer; the n-stage packer sliding sleeve set consists of n-stage sliding sleeves, n-stage sliding sleeve seats and n-stage packers.
The packer adopts a K341 packer.
Has the beneficial effects that:
1. the sectional testing pipe column for the oil field horizontal well disclosed by the invention can be used for setting all packers by one-time pressing, so that the interference between sections in the testing process is avoided, and the accuracy and the reliability of the test are improved.
2. Compared with the conventional method, the method can complete the full-well section test only by one time of the pipe column, and the well mouth and the pipe column do not need to be moved in the pumping process, so that the continuous test is realized, the operation efficiency is high, and the cost is low.
3. The invention applies the oilfield horizontal well subsection test string tool to the horizontal well liquid absorption capability test, achieves the purpose of subsection test, and the test result can be used for judging the primary reconstruction degree of each section and the liquid production contribution of each section, thereby having important significance for repeated fracturing well selection and parameter optimization.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to clearly understand the technical solutions of the present invention and to implement the technical solutions according to the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of the present invention.
In the figure: 1-a front end sliding sleeve seat; 2-first-stage sliding sleeves; 3-first-stage sliding sleeve seat; 4-first-stage packer; 5-a secondary sliding sleeve; 6-a secondary sliding sleeve seat; 7-a secondary packer; 8-an oil pipe; 9-a sleeve; 10-end packer; 11-end sliding sleeve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
the sectional test method for the horizontal well of the oil field comprises the following steps
The method comprises the following steps: processing a well to be logged
Selecting a well to be tested, pulling out a production pipe column of an original well, and finishing a shaft treatment process;
step two: perforating the well cementation casing 9;
step three: setting a cementing casing 9 into the reservoir;
step four: sectional testing pipe column for connecting horizontal well
After the horizontal well sectional testing pipe columns are connected, the well to be tested which is processed in the first step is put into the horizontal well at one time, and a pump truck is connected to the fractured well mouth in a bypass mode;
step five: sequentially testing the liquid absorbing capacity of the first section to the nth section
After the fourth step is finished, a first-stage ball is thrown from an injection port on the fracturing wellhead, the pumping is performed, when the first-stage ball reaches a first-stage sliding sleeve 2, the pressure of the wellhead rises, all packers are set when the pressure is suppressed to a set pressure value, after the pressure is suppressed, shear pins are cut off, sliding sleeve cores are knocked down to fall on a front-end sliding sleeve seat 1, the first-stage sliding sleeve 2 is opened, the pumping is performed, the pressure value is recorded, and the first-stage liquid absorption capacity test is finished; then, a second-stage ball is thrown, the second-stage ball is located on a second-stage sliding sleeve 5 to be boosted, after the boosting, shear pins are cut off, a sliding sleeve core is located on a sliding sleeve seat 3, pumping is carried out, pressure values are recorded, and a second-stage liquid suction capacity test is completed; finally, repeating the steps until the imbibition capability test of all the intervals is completed;
step six: absorbent Capacity ordering of Individual intervals
According to the result of the test in the fifth step, obtaining the liquid absorption capacity sequencing of each layer section according to the liquid absorption capacity of each layer section;
step seven: application of test results
And applying the imbibition capacity of each interval obtained in the sixth step to the repeated fracturing well selection and parameter optimization.
In actual use, a well to be tested is selected, a production pipe column of an original well is taken out, and wellbore treatment processes such as sand washing, well washing and the like are completed. Then, perforating and segmenting the well cementation casing 9, and putting the well cementation casing 9 into a reservoir stratum after the perforating and segmenting are finished; and then, confirming the connection sequence of the sectional testing pipe columns of the horizontal well of the oil field according to the structure shown in the attached figure 1, putting the pipe columns into the well at one time, adjusting the perforation of the well cementation casing 9 to correspond to each sliding sleeve in the sectional testing pipe columns of the horizontal well of the oil field, wherein the specific sequence of the sectional testing pipe columns of the horizontal well of the oil field is as follows: the fracturing wellhead comprises a sliding sleeve seat 1, a primary sliding sleeve 2, a primary sliding sleeve seat 3, a primary packer 4, a secondary sliding sleeve 5, a secondary sliding sleeve seat 6 and a secondary packer 7, wherein the oil pipe 8 is communicated with the fracturing wellhead, and the fracturing wellhead is connected with a pump truck in a bypass mode; then, a first-stage ball is thrown from an injection port on a fracturing wellhead, the ball is pressurized and pumped, when the ball reaches a first-stage sliding sleeve 2, the pressure of the wellhead rises, all packers are seated when the pressure is suppressed to 15MPa, when the pressure is suppressed to 20-25MPa, a shear pin is cut off, a sliding sleeve core is beaten and falls onto a sliding sleeve seat 1, the first-stage sliding sleeve 2 is opened, pumping and pressure value recording are carried out, the first-stage liquid suction capability test is completed, then a second-stage ball is thrown, the ball is seated on a second-stage sliding sleeve 5 and is pressurized, when the pressure is suppressed to 20-25MPa, the shear pin is cut off, the sliding sleeve core is seated on a first-stage sliding sleeve seat 3, pumping and pressure value recording are carried out, and the second-stage liquid suction capability test is completed; and finally, repeating the steps until the imbibition capability test of all the intervals is completed, obtaining the imbibition capability of each interval by comparing and calculating the pressure under the same pump injection and discharge capacity, and applying the test result to the repeated fracturing well selection and parameter optimization.
The method comprises seven steps of processing a well to be tested, perforating a well cementation casing pipe 9, putting the well cementation casing pipe 9 into a reservoir, connecting a horizontal well subsection testing pipe column, sequentially testing the liquid absorption capacity of the first section to the nth section, comparing the pressure and applying the test result, and through one-time pressing and setting of all packers, the interference between the sections in the testing process is avoided, and the accuracy and the reliability of the test are improved. The invention can complete the whole well section test only by one time of the pipe column, and the well mouth and the pipe column do not need to be moved in the pumping process, thereby realizing continuous test, high operation efficiency and low cost. The casing sliding sleeve tool is applied to the liquid absorption capacity test of the horizontal well, the purpose of subsection test is achieved, the test result can be used for judging the primary transformation degree of each section and the liquid production contribution of each section, and the method has important significance for the repeated fracturing well selection and parameter optimization.
Example two:
a sectional testing method for an oil field horizontal well is different from the first embodiment in that: and D, setting the pressure building set pressure value in the step V to be 13-17MPa, and cutting off the shear pins and knocking the sliding sleeve core down to the front end sliding sleeve seat 1 when the pressure building set pressure value is 20-25 MPa.
Preferably, the set pressure is 15 MPa.
When in actual use, all packers need to be set first, and then the sliding sleeve needs to be opened, and a large difference value is needed to prevent mistaken opening in the process. By adopting the technical scheme, the mistaken opening is effectively prevented.
Example three:
a sectional testing method for an oil field horizontal well is different from the first embodiment in that: the judgment method for obtaining the imbibition capacity of each interval in the sixth step is as follows: and in the sixth step, the imbibition capacity of each interval is obtained by comparing the pressure at the same pump injection and discharge capacity.
Preferably, in the sixth step, the judgment method for obtaining the imbibition capacity of each interval is that the smaller the pressure value of the pump truck is, the stronger the imbibition capacity is, under the same injection displacement.
When in actual use, carry out the size contrast with the pressure value in different intervals and can arrange out each interval imbibition ability size in proper order: the smaller the pressure value of the pump truck is, the stronger the liquid suction capacity is, and the pump truck is very visual, simple and easy to operate.
Judging the liquid absorption capacity of each interval of the well at the level of one section of 10 sections, and adopting 1m for the 1 st to 10 th sections 3 And carrying out an injection test at the displacement of/min, and respectively recording the stable injection pressures of the pump truck as 11, 12, 13, 14, 15, 16, 17, 18, 19 and 20MPa, so that the liquid absorption capacity of each section can be judged to be from strong to weak: paragraph 1>Paragraph 2>Paragraph 3>Paragraph 4>Paragraph 5>Paragraph 6>Paragraph 7>Paragraph 8>Paragraph 9>Paragraph 10.
Example four:
according to the segmented testing string of the oilfield horizontal well, which is shown in the figure 1, the segmented testing string at least comprises an oil pipe 8, a front-end sliding sleeve seat 1, a multi-stage packer sliding sleeve group, a tail-end sliding sleeve 11 and a tail-end packer 10; the front end sliding sleeve seat 1, the multi-stage packer sliding sleeve set, the tail end sliding sleeve 11 and the tail end packer 10 are sequentially connected from the foremost end to the tail end of the oil pipe 8.
In actual use, a well to be tested is selected, a production pipe column of an original well is pulled out, and after wellbore treatment processes such as sand washing, well washing and the like are completed, the method provided by the method is used for implementing the sectional test. Firstly, confirming the connection sequence of the well entering tools and setting the pipe column once according to the structure of the attached figure 1, wherein the specific sequence is as follows: the fracturing well comprises a sliding sleeve seat 1, a primary sliding sleeve group, a secondary sliding sleeve group, an n-grade sliding sleeve group, an oil pipe 8 and a fracturing well head, wherein the fracturing well head is connected with a pump truck in a bypass mode; then, a first-stage ball is thrown from an injection port on the fracturing well head, the ball is pressurized and pumped, when the ball reaches a first-stage sliding sleeve set, the pressure of the well head rises, all packers are set when the pressure is suppressed to 15MPa, when the pressure is suppressed to 20-25MPa, a shear pin is cut off, a sliding sleeve core in the first-stage sliding sleeve set falls onto a sliding sleeve seat 1, the first-stage sliding sleeve set is opened, pumping is implemented, the pressure value is recorded, and a first-stage liquid absorption capacity test is completed; and repeating the steps until the liquid absorption capacity test of all the intervals is completed, obtaining the liquid absorption capacity of each interval by comparing and calculating the pressure under the same pump injection displacement, and applying the test result to the repeated fracturing well selection and parameter optimization.
After the test is finished, the pipe column is lifted up to unseal all the packers and the pipe column is lifted out, and the test is finished.
According to the invention, all packers are set by one-time pressing, so that the interference between sections in the test process is avoided, and the test accuracy and reliability are improved. The invention can complete the whole well section test only by one time of the pipe column, and the well mouth and the pipe column do not need to be moved in the pumping process, thereby realizing continuous test, high operation efficiency and low cost. The casing sliding sleeve tool is applied to the liquid absorption capacity test of the horizontal well, the purpose of subsection test is achieved, the test result can be used for judging the primary transformation degree of each section and the liquid production contribution of each section, and the method has important significance for the repeated fracturing well selection and parameter optimization.
The invention adopts one-time immobile pipe column to complete the subsection imbibition test of different sections of the whole horizontal section, realizes the section packing and eliminates the interference between the sections in the whole test process, realizes the subsection test purpose by section-by-section ball injection and pump injection, and has simple and easy operation process.
Example five:
according to the sectional test pipe column for the horizontal well of the oil field shown in the figure 1, the four differences from the embodiment are that: each stage of packer sliding sleeve set in the multi-stage packer sliding sleeve set has the same structure, and the multi-stage packer sliding sleeve set comprises a first-stage packer sliding sleeve set, a second-stage packer sliding sleeve set and an n-stage packer sliding sleeve set from the front end to the rear end of an oil pipe.
Preferably, each stage of the multi-stage packer sliding sleeve set has the same structure, and the multi-stage packer sliding sleeve set comprises a first-stage packer sliding sleeve set, a second-stage packer sliding sleeve set and an n-stage packer sliding sleeve set from the front end to the rear end of the oil pipe 8; the primary packer sliding sleeve set consists of a primary sliding sleeve 2, a primary sliding sleeve seat 3 and a primary packer 4; the second-stage packer sliding sleeve set consists of a second-stage sliding sleeve 5, a second-stage sliding sleeve seat 6 and a second-stage packer 7; the n-stage packer sliding sleeve set consists of n-stage sliding sleeves, n-stage sliding sleeve seats and n-stage packers.
When the packer is actually used, a packer sliding sleeve set is adopted, and an annular space between an oil pipe and a sleeve is sealed through the packer; the sliding sleeve is opened by throwing the ball, the core in the sliding sleeve and the ball are located on the sliding sleeve seat together, and fluid below the sliding sleeve seat in the oil pipe is sealed and isolated, so that the sealing and isolation of the inside and the outside of the oil pipe below a test section are realized, and the interference of the backflow of the fluid below the test section on the test is avoided.
Example six:
according to the sectional test pipe column for the horizontal well of the oil field shown in the figure 1, the four differences from the embodiment are that: the packer adopts a K341 packer.
When in actual use, the test string can be used for setting all packers through one-time pressing, so that the intersegmental interference in the test process is avoided, the test accuracy and reliability are improved, the test string can be lifted out directly after the test of all intervals is completed, and the drill sticking risk is small.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
In the case of no conflict, a person skilled in the art may combine the related technical features in the above examples according to actual situations to achieve corresponding technical effects, and details of various combining situations are not described herein.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
The foregoing is illustrative of the preferred embodiments of the present invention, and the present invention is not to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. Any simple modification, equivalent change and modification of the above embodiments according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.
Claims (9)
1. The method for testing the horizontal well section by section of the oil field is characterized by comprising the following steps
The method comprises the following steps: processing a well to be logged
Selecting a well to be tested, pulling out a production pipe column of an original well, and finishing a shaft treatment process;
step two: perforating the well cementation casing (9);
step three: a lower cementing casing (9) enters the reservoir;
step four: sectional testing pipe column for connecting horizontal well
After the sectional testing pipe columns of the horizontal well are connected, the well to be tested which is processed in the step one is put into the horizontal well at one time, and a pump truck is connected to the fracturing wellhead by a bypass;
step five: sequentially testing the liquid absorbing capacity of the first section to the nth section
After the fourth step is finished, a first-stage ball is thrown from an injection port on the fracturing wellhead, the pumping is performed, when the first-stage ball reaches a first-stage sliding sleeve (2), the wellhead pressure rises, all packers are set when the pressure is suppressed to a set pressure value, after the pressure is suppressed, shear pins are cut off, sliding sleeve cores are knocked down to a front-end sliding sleeve seat (1), the first-stage sliding sleeve (2) is opened, the pumping is performed, the pressure value is recorded, and a first-stage liquid suction capacity test is finished; then, a second-stage ball is thrown, the second-stage ball is located on a second-stage sliding sleeve (5) to be boosted, after the boosting, the shear pin is cut off, the sliding sleeve core is located on a sliding sleeve seat, the pump injection is carried out, the pressure value is recorded, and the second-stage liquid absorption capacity test is completed; finally, repeating the steps until the imbibition capability test of all intervals is completed;
step six: absorbent Capacity ordering of Individual intervals
According to the result of the test in the fifth step, obtaining the liquid absorption capacity sequencing of each layer section according to the liquid absorption capacity of each layer section;
step seven: application of test results
And applying the liquid absorption capacity of each layer section obtained in the step six to repeated fracturing well selection and parameter optimization.
2. The oilfield horizontal well section testing method of claim 1, wherein: and D, setting the pressure build-up pressure in the step V to be 13-17MPa, and when the pressure build-up pressure reaches 20-25MPa, shearing the shear pin and beating the sliding sleeve core to fall onto the front end sliding sleeve seat (1).
3. The method of claim 2, wherein the method comprises the steps of: the set pressure value of the pressure building is 15 MPa.
4. The oilfield horizontal well section testing method of claim 1, wherein: in the sixth step, the liquid absorption capacity of each interval is obtained by comparing the pressure at the same pump injection amount.
5. The method of claim 4, wherein the method comprises the steps of: the judgment method for obtaining the imbibition capacity of each layer section in the sixth step is that the smaller the pressure value of the pump truck is, the stronger the imbibition capacity is under the same injection displacement.
6. The oilfield horizontal well section testing method of claim 1, wherein: the adopted horizontal well subsection testing pipe column at least comprises an oil pipe (8), a front end sliding sleeve seat (1), a multi-stage packer sliding sleeve set, a tail end sliding sleeve (11) and a tail end packer (10); the front end sliding sleeve seat (1), the multi-stage packer sliding sleeve set, the tail end sliding sleeve (11) and the tail end packer (10) are sequentially connected from the foremost end to the tail end of the oil pipe (8).
7. The method of claim 6, wherein the method comprises the steps of: the packer sliding sleeve set comprises a sliding sleeve, a sliding sleeve seat and a packer; the sliding sleeve, the sliding sleeve seat and the packer are sequentially connected from the front end to the tail end of the oil pipe (8).
8. The method of claim 7, wherein the method comprises the steps of: each stage of packer sliding sleeve group in the multi-stage packer sliding sleeve group has the same structure, and the multi-stage packer sliding sleeve group is a first-stage packer sliding sleeve group, a second-stage packer sliding sleeve group to an n-stage packer sliding sleeve group from the front end to the rear end of an oil pipe (8); the primary packer sliding sleeve set consists of a primary sliding sleeve (2), a primary sliding sleeve seat (3) and a primary packer (4); the secondary packer sliding sleeve set consists of a secondary sliding sleeve (5), a secondary sliding sleeve seat (6) and a secondary packer (7); the n-stage packer sliding sleeve set consists of n-stage sliding sleeves, n-stage sliding sleeve seats and n-stage packers.
9. The method of claim 7, wherein the method comprises the steps of: the packer adopts a K341 packer.
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| CN113153253B (en) * | 2020-01-07 | 2022-08-30 | 中国石油天然气股份有限公司 | Horizontal well composite fracturing method |
| CN111663929B (en) * | 2020-05-25 | 2023-04-07 | 中国石油天然气股份有限公司 | Multi-section fractured horizontal well production profile testing pipe column |
| CN114059981A (en) * | 2020-07-30 | 2022-02-18 | 中国石油天然气股份有限公司 | Horizontal well repeated fracturing layer selection and fracturing mode selection method |
| CN111852449B (en) * | 2020-09-09 | 2022-11-25 | 哈尔滨艾拓普科技有限公司 | Continuous dragging type horizontal well produced liquid sectional test system |
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| CN101699029A (en) * | 2009-11-06 | 2010-04-28 | 安东石油技术（集团）有限公司 | High-pressure clamped sealing gas injection tool being used for leak detection of tube column and having function of trip prevention |
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